Optical module

Abstract

The invention discloses an optical module which comprises an optical receiving component, the optical receiving component comprises a first optical receiving assembly, a second optical receiving assembly, a third optical receiving assembly and a wave division assembly, and the first optical receiving assembly and the second optical receiving assembly are located on one side of the optical receiving component. The wave division assembly is arranged along the length direction of the light receiving component. An emission light signal enters an emission light incidence position of the wave division assembly and is emitted through a receiving light incidence position of the wave division assembly, and a receiving light signal comprising a first wavelength, a second wavelength and a third wavelength enters the receiving light incidence position of the wave division assembly. And the emitted light is reflected by the incident light position of the wave division assembly, then is divided into a first wavelength optical signal, a second wavelength optical signal and a third wavelength optical signal, and is emitted out of the first wavelength optical signal, the second wavelength optical signal and the third wavelength optical signal. In the invention, the wave division assembly is arranged along the length direction of the light receiving part, and the light path for transmitting the light signal and the light path for receiving the light signal coincide in the width direction of the light receiving part, so that the width size of the light receiving part is reduced.

Description

Optical module

[0001] This application claims priority to the application filed on June 13, 2024 with the China National Intellectual Property Office and application number 202410764520.3; the application filed on December 24, 2024 with the China National Intellectual Property Office and application number 202411921629.X; the application filed on December 24, 2024 with the China National Intellectual Property Office and application number 202411921600.1; the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0002] The present disclosure relates to the field of optical fiber communication technology, in particular to an optical module. BACKGROUND

[0003] With the development of new business and application modes such as cloud computing, mobile Internet, video, etc., the development and progress of optical communication technology becomes increasingly important. In optical communication technology, optical modules are tools for converting optical signals and electrical signals, and are one of the key devices in optical communication equipment. With the development of optical communication technology, the transmission rate of optical modules is continuously increasing. SUMMARY

[0004] The present disclosure provides an optical module, comprising: an optical receiving component, a first end connected with a fiber adapter, a second end connected with an optical transmitting component, the light emitting direction of the optical transmitting component being towards the fiber adapter; the optical receiving component comprises three optical receiving assemblies for transmitting optical signals of different wavelengths;

[0005] The optical receiving component further comprises a wavelength division assembly, the received optical signals including a first wavelength, a second wavelength and a third wavelength emitted by the fiber adapter are incident to a receiving light entrance of a first end of the wavelength division assembly, and after being reflected at a transmitting light entrance of a second end of the wavelength division assembly, the received optical signals are divided into a first wavelength optical signal, a second wavelength optical signal and a third wavelength optical signal, and the first wavelength optical signal, the second wavelength optical signal and the third wavelength optical signal are incident to corresponding optical receiving assemblies, wherein the first wavelength optical signal includes a received optical signal of a first wavelength, the second wavelength optical signal includes a received optical signal of a second wavelength, and the third wavelength optical signal includes a received optical signal of a third wavelength; or,

[0006] The light receiving component further comprises a first light assembly, the first light assembly comprises a light filtering assembly, a first filter, a second filter and a third filter, the light filtering assembly is located in the light emitting direction of the fiber adapter, and is used for separating a third wavelength optical signal from the received optical signal; the first filter is located on the first light emitting light path of the light filtering assembly, and is used for reflecting the third wavelength optical signal; a first light receiving assembly is located on the reflected light path of the first filter; the second filter is located on the second light emitting light path of the light filtering assembly, and is used for reflecting a first wavelength optical signal and a second wavelength optical signal in the received optical signal; the third filter is located on the reflected light path of the second filter, and is used for transmitting the first wavelength optical signal and reflecting the second wavelength optical signal; a second light receiving assembly is located on the transmitted light path of the third filter, and a third light receiving assembly is located on the reflected light path of the third filter.

[0007] The present disclosure further provides a light module, comprising:

[0008] The light receiving component further comprises a first light assembly, the first light assembly comprises a light filtering assembly, a first filter, a second filter and a third filter, the light filtering assembly is located in the light emitting direction of the fiber adapter, and is used for separating a third wavelength optical signal from the received optical signal; the first filter is located on the first light emitting light path of the light filtering assembly, and is used for reflecting the third wavelength optical signal; a first light receiving assembly is located on the reflected light path of the first filter; the second filter is located on the second light emitting light path of the light filtering assembly, and is used for reflecting a first wavelength optical signal and a second wavelength optical signal in the received optical signal; the third filter is located on the reflected light path of the second filter, and is used for transmitting the first wavelength optical signal and reflecting the second wavelength optical signal; a second light receiving assembly is located on the transmitted light path of the third filter, and a third light receiving assembly is located on the reflected light path of the third filter.

[0009] The embodiment of the present disclosure further provides an optical module, comprising: an optical receiving component, a first end of which is connected with a fiber adapter, and a second end of which is connected with an optical transmitting component; the light emitting direction of the optical transmitting component is towards the fiber adapter; wherein the optical receiving component comprises:

[0010] a first housing; a first optical receiving assembly located at one side wall of the first housing; a second optical receiving assembly; a third optical receiving assembly located at another side wall of the first housing; a first optical assembly located between the optical transmitting component and the fiber adapter; the first optical assembly comprises:

[0011] a fourth filter located in the light emitting direction of the fiber adapter, used for reflecting a first wavelength optical signal in an optical signal and transmitting a second wavelength optical signal and a third wavelength optical signal in the optical signal;

[0012] a fifth filter located in the reflection light path of the fourth filter, used for reflecting the first wavelength optical signal; the second optical receiving assembly is located in the reflection light path of the fifth filter;

[0013] a sixth filter located in the transmission light path of the fourth filter, used for transmitting the second wavelength optical signal and reflecting the third wavelength optical signal; the first optical receiving assembly is located in the reflection light path of the sixth filter;

[0014] a seventh filter located in the transmission light path of the fourth filter, used for reflecting the second wavelength optical signal and transmitting the third wavelength optical signal; the third optical receiving assembly is located in the reflection light path of the seventh filter;

[0015] the transmitting optical signal is transmitted to the fiber adapter through the seventh filter, the sixth filter and the fourth filter. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and other drawings can also be obtained by those skilled in the art without creative labor.

[0017] FIG. 1 is a partial structure diagram of an optical communication system according to some embodiments;

[0018] FIG. 2 is a partial structure diagram of a host computer according to some embodiments;

[0019] FIG. 3 is a structure diagram of an optical module according to some embodiments;

[0020] Figure 4a is an exploded view of an optical module according to some embodiments;

[0021] Figure 4b is an assembly view of an optical transceiver assembly, a fiber optic adapter, and a circuit board from another perspective according to some embodiments;

[0022] Figure 4c is an exploded view of an optical transceiver assembly, a fiber optic adapter, and a circuit board according to some embodiments;

[0023] Figure 4d is an exploded view of a flexible circuit board according to some embodiments;

[0024] Figure 4e is an assembly view of an optical transceiver assembly, a circuit board, and a portion of a flexible circuit board according to some embodiments;

[0025] Figure 4f is an assembly view of an optical transceiver assembly, a circuit board, and another portion of a flexible circuit board according to some embodiments;

[0026] Figure 5a is a partial view of an internal structure of an optical module according to some embodiments;

[0027] Figure 5b is a partial exploded view of an internal structure of an optical module according to some embodiments;

[0028] Figure 6 is a partial view of an optical receiving assembly according to some embodiments;

[0029] Figure 7a is a partial view of an optical receiving assembly according to some embodiments;

[0030] Figure 7b is a partial cross-sectional view of an optical receiving assembly according to some embodiments;

[0031] Figure 7c is a partial exploded view of an optical receiving assembly according to some embodiments;

[0032] Figure 8a is a structural view of a bracket according to some embodiments;

[0033] Figure 8b is a structural view of a bracket from another perspective according to some embodiments;

[0034] Figure 9a is an exploded view of a first cavity according to some embodiments;

[0035] Figure 9b is a partial exploded view of a first cavity according to some embodiments;

[0036] Figure 10 is a partial optical path view of a first optical receiving assembly according to some embodiments;

[0037] Figure 11a is a structural view of a first housing according to some embodiments;

[0038] FIG. 11b is a structural diagram of a first housing from another perspective, according to some embodiments;

[0039] FIG. 11c is a cross-sectional view of a first housing, according to some embodiments;

[0040] FIG. 12a is a light path diagram of a first light receiving component, according to some embodiments;

[0041] FIG. 12b is a cross-sectional view of a first light receiving component, according to some embodiments;

[0042] FIG. 12c is an assembly diagram of another light receiving component and an adapter plate, according to some embodiments;

[0043] FIG. 12d is an assembly diagram of another light receiving component, a fiber adapter, and a circuit board, according to some embodiments;

[0044] FIG. 12e is an exploded view diagram one of another light receiving component, according to some embodiments;

[0045] FIG. 12f is an exploded view diagram two of another light receiving component, according to some embodiments;

[0046] FIG. 12g is an exploded diagram of another first housing and another light receiving assembly, according to some embodiments;

[0047] FIG. 13a is a partial light path diagram of a second light receiving component, according to some embodiments;

[0048] FIG. 13b is a partial light path diagram of a third light receiving component, according to some embodiments;

[0049] FIG. 13c is a partial light path diagram of a fourth light receiving component, according to some embodiments;

[0050] FIG. 13d is a partial light path diagram of a fifth light receiving component, according to some embodiments;

[0051] FIG. 13e is a partial light path diagram of a sixth light receiving component, according to some embodiments;

[0052] FIG. 13f is a partial light path diagram of a seventh light receiving component, according to some embodiments;

[0053] FIG. 14a is a structural diagram of a first light emitting component, according to some embodiments;

[0054] FIG. 14b is a structural diagram of a first light emitting component from another perspective, according to some embodiments;

[0055] FIG. 14c is an exploded diagram of a first light emitting component, according to some embodiments;

[0056] Fig. 14d is a partial structural schematic diagram of a light emitting component according to some embodiments of the present disclosure;

[0057] Fig. 14e is a partial structural schematic diagram of a light emitting component according to some embodiments of the present disclosure;

[0058] Fig. 14f is a cross-sectional view of a light emitting component according to some embodiments of the present disclosure;

[0059] Fig. 14g is a partial structural schematic diagram of a light emitting component according to some embodiments of the present disclosure;

[0060] Fig. 14h is a cross-sectional view of a light emitting component according to some embodiments of the present disclosure;

[0061] Fig. 14i is a cross-sectional view of a light emitting component according to some embodiments of the present disclosure;

[0062] Fig. 14j is a light path diagram of a first light emitting component according to some embodiments of the present disclosure;

[0063] Fig. 15a is a structural schematic diagram of a mounting bracket according to some embodiments of the present disclosure;

[0064] Fig. 15b is a structural schematic diagram of a mounting bracket according to some embodiments of the present disclosure;

[0065] Fig. 15c is a use state diagram of a mounting bracket according to some embodiments of the present disclosure;

[0066] Fig. 15d is a structural diagram of a second light emitting component according to some embodiments of the present disclosure;

[0067] Fig. 15e is an assembly diagram of another optical transceiver component and a fiber adapter according to some embodiments of the present disclosure;

[0068] Fig. 15f is an exploded view of a second light emitting component according to some embodiments of the present disclosure;

[0069] Fig. 15g is an exploded view of a second light emitting component according to some embodiments of the present disclosure;

[0070] Fig. 16a is a partial exploded view of a second light emitting component according to some embodiments of the present disclosure;

[0071] Fig. 16b is a partial cross-sectional view of a second light emitting component according to some embodiments of the present disclosure;

[0072] Fig. 17 is a light path diagram of a second light emitting component according to some embodiments of the present disclosure;

[0073] FIG. 18 is an optical path diagram of a third light emitting component, according to some embodiments;

[0074] FIG. 19a is an optical path diagram of a first light module, according to some embodiments;

[0075] FIG. 19b is an optical path diagram of a second light module, according to some embodiments;

[0076] FIG. 19c is an optical path diagram of a third light module, according to some embodiments;

[0077] FIG. 20a is an optical path diagram of a fourth light module, according to some embodiments;

[0078] FIG. 20b is an optical path diagram of a fifth light module, according to some embodiments;

[0079] FIG. 20c is an optical path diagram of a fourth light module, according to some embodiments;

[0080] FIG. 21a is an optical path diagram of a seventh light module, according to some embodiments;

[0081] FIG. 21b is an optical path diagram of an eighth light module, according to some embodiments;

[0082] FIG. 21c is an optical path diagram of a ninth light module, according to some embodiments;

[0083] FIG. 22a is an optical path diagram of a tenth light module, according to some embodiments;

[0084] FIG. 22b is an optical path diagram of an eleventh light module, according to some embodiments;

[0085] FIG. 22c is an optical path diagram of a twelfth light module, according to some embodiments;

[0086] FIG. 23a is an optical path diagram of a thirteenth light module, according to some embodiments;

[0087] FIG. 23b is an optical path diagram of a fourteenth light module, according to some embodiments;

[0088] FIG. 23c is an optical path diagram of a fifteenth light module, according to some embodiments;

[0089] FIG. 24a is an optical path diagram of a sixteenth light module, according to some embodiments;

[0090] FIG. 24b is an optical path diagram of a seventeenth light module, according to some embodiments;

[0091] FIG. 24c is an optical path diagram of an eighteenth light module, according to some embodiments;

[0092] FIG. 25a is an optical path diagram of a nineteenth optical module according to some embodiments;

[0093] FIG. 25b is an optical path diagram of a twentieth optical module according to some embodiments;

[0094] FIG. 25c is an optical path diagram of a twenty-first optical module according to some embodiments. DETAILED DESCRIPTION

[0095] Some embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. However, the described embodiments are only some embodiments of the present disclosure, not all embodiments. Based on the embodiments provided in the present disclosure, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present disclosure.

[0096] Unless otherwise required by the context, throughout the specification and claims, the term "comprising" is interpreted to mean "including, but not limited to"; the terms "first", "second", and the like do not imply relative importance or an upper limit on the number; the term "multiple" means two or more; the term "connected" should be interpreted broadly, for example, "connected" can be fixedly connected, or detachably connected, or integrated, can be directly connected, or indirectly connected through an intermediate medium; the use of the terms "adapted to" or "configured to" means open and inclusive language, which does not exclude devices adapted or configured to perform additional tasks or steps; the terms "parallel", "vertical", "same", "consistent", "flush", and the like are not limited to absolute mathematical relationships, but also include acceptable error ranges generated in practice, and differences formed based on the same design concept but due to manufacturing reasons.

[0097] In optical communication technology, in order to establish information transmission between information processing devices, information needs to be loaded onto light, and the transmission of information is realized by the propagation of light. Here, the light loaded with information is an optical signal. The optical signal can reduce the loss of optical power when transmitted in the information transmission device, so as to realize high-speed, long-distance, and low-cost information transmission. The signal that can be recognized and processed by the information processing device is an electrical signal. The information processing device usually includes an optical network unit (ONU), a gateway, a router, a switch, a mobile phone, a computer, a server, a tablet computer, a television, etc., and the information transmission device usually includes an optical fiber and an optical waveguide, etc.

[0098] The optical module can realize mutual conversion between optical signals and electrical signals between the information processing device and the information transmission device. For example, at least one of the optical signal input end or the optical signal output end of the optical module is connected with an optical fiber, and at least one of the electrical signal input end or the electrical signal output end of the optical module is connected with an optical network terminal; a first optical signal from the optical fiber is transmitted to the optical module, the optical module converts the first optical signal into a first electrical signal, and transmits the first electrical signal to the optical network terminal; a second electrical signal from the optical network terminal is transmitted to the optical module, the optical module converts the second electrical signal into a second optical signal, and transmits the second optical signal to the optical fiber. Since information transmission can be performed between multiple information processing devices through electrical signals, at least one of the multiple information processing devices needs to be directly connected with the optical module, without the need for all the information processing devices to be directly connected with the optical module. Here, the information processing device directly connected with the optical module is referred to as a host computer of the optical module. In addition, the optical signal input end or the optical signal output end of the optical module can be referred to as an optical port, and the electrical signal input end or the electrical signal output end of the optical module can be referred to as an electrical port.

[0099] FIG. 1 is a partial structure diagram of an optical communication system according to some embodiments. As shown in FIG. 1, the optical communication system mainly includes a remote information processing device 1000, a local information processing device 2000, a host computer 100, an optical module 200, an optical fiber 101, and a network cable 103.

[0100] One end of the optical fiber 101 extends towards the remote information processing device 1000, and the other end of the optical fiber 101 is connected with the optical module 200 through the optical port of the optical module 200. The optical signal can be totally reflected in the optical fiber 101, and the propagation of the optical signal in the totally reflected direction can almost maintain the original optical power. The optical signal is totally reflected multiple times in the optical fiber 101 to transmit the optical signal from the remote information processing device 1000 to the optical module 200, or to transmit the optical signal from the optical module 200 to the remote information processing device 1000, thereby realizing long-distance and low-power-loss information transmission.

[0101] The optical communication system can include one or more optical fibers 101, and the optical fiber 101 can be detachably connected with the optical module 200 or fixedly connected. The host computer 100 is configured to provide a data signal to the optical module 200, or receive a data signal from the optical module 200, or monitor or control the working state of the optical module 200.

[0102] The host computer 100 includes a housing substantially in the shape of a rectangular cuboid, and an optical module connecting hole 102 arranged on the housing. The optical module connecting hole 102 is configured to access the optical module 200, so as to establish one-way or two-way electrical signal connection between the host computer 100 and the optical module 200.

[0103] The host computer 100 further comprises an external electrical connection hole which can access an electrical signal network. For example, the external electrical connection hole comprises a universal serial bus (USB) connection hole or a network cable connection hole 104 which is configured to access a network cable 103 to establish a one-way or two-way electrical signal connection between the host computer 100 and the network cable 103. One end of the network cable 103 is connected to the local information processing device 2000, and the other end of the network cable 103 is connected to the host computer 100 to establish an electrical signal connection between the local information processing device 2000 and the host computer 100 through the network cable 103. For example, a third electrical signal emitted by the local information processing device 2000 is transmitted to the host computer 100 through the network cable 103, and the host computer 100 generates a second electrical signal according to the third electrical signal. The second electrical signal from the host computer 100 is transmitted to the optical module 200, the optical module 200 converts the second electrical signal into a second optical signal, and transmits the second optical signal to the optical fiber 101. The second optical signal is transmitted in the optical fiber 101 to the remote information processing device 1000. For example, the first optical signal from the remote information processing device 1000 is transmitted through the optical fiber 101, the first optical signal from the optical fiber 101 is transmitted to the optical module 200, the optical module 200 converts the first optical signal into a first electrical signal, the optical module 200 transmits the first electrical signal to the host computer 100, the host computer 100 generates a fourth electrical signal according to the first electrical signal, and the fourth electrical signal is transmitted to the local information processing device 2000. It should be noted that the optical module is a tool for converting optical signals and electrical signals, and the information does not change in the conversion process of the optical signals and the electrical signals, and the encoding and decoding mode of the information can change. In addition to the optical network terminal, the host computer 100 also comprises an optical line terminal (OLT), an optical network terminal (ONT), or a data center server, etc.

[0104] FIG. 2 is a partial structure diagram of a host computer according to some embodiments. In order to clearly show the connection relationship between the optical module 200 and the host computer 100, FIG. 2 only shows the structure of the host computer 100 related to the optical module 200. As shown in FIG. 2, the host computer 100 further comprises a PCB circuit board 105 arranged in the shell, a cage 106 arranged on the surface of the PCB circuit board 105, a heat sink 107 arranged on the cage 106, and an electrical connector arranged inside the cage 106. The electrical connector is configured to access the electrical port of the optical module 200; the heat sink 107 has a fin or other protruding structure to increase the heat dissipation area.

[0105] The optical module 200 is inserted into the cage 106 of the host computer 100, and the optical module 200 is fixed by the cage 106. The heat generated by the optical module 200 is conducted to the cage 106, and then diffused through the heat sink 107. After the optical module 200 is inserted into the cage 106, the electrical port of the optical module 200 is connected to the electrical connector inside the cage 106, so that the optical module 200 and the host computer 100 are connected in a bidirectional electrical signal connection. In addition, the optical port of the optical module 200 is connected to the optical fiber 101, so that the optical module 200 and the optical fiber 101 are connected in a bidirectional optical signal connection.

[0106] FIG. 3 is a structural diagram of an optical module according to some embodiments, and FIG. 4a is an exploded view of an optical module according to some embodiments. As shown in FIGS. 3 and 4a, the optical module 200 includes a shell, a circuit board 300 arranged in the shell, an optical transmitting component 400, and an optical receiving component 500. However, the present disclosure is not limited thereto, and in some embodiments, the optical module 200 includes one of the optical transmitting component 400 and the optical receiving component 500.

[0107] The shell includes an upper shell 201 and a lower shell 202. The upper shell 201 is covered on the lower shell 202 to form the above-mentioned shell having two openings 204 and 205. The outer contour of the shell generally presents a square body. In some embodiments, the lower shell 202 includes a bottom plate 2021 and two lower side plates 2022 arranged perpendicularly to the bottom plate 2021 on both sides of the bottom plate 2021. The upper shell 201 includes a cover plate 2011, and the cover plate 2011 is covered on the two lower side plates 2022 of the lower shell 202 to form the above-mentioned shell. In some embodiments, the lower shell 202 includes a bottom plate 2021 and two lower side plates 2022 arranged perpendicularly to the bottom plate 2021 on both sides of the bottom plate 2021. The upper shell 201 includes a cover plate 2011 and two upper side plates arranged perpendicularly to the cover plate 2011 on both sides of the cover plate 2011. The two upper side plates are combined with the two lower side plates 2022 to achieve that the upper shell 201 is covered on the lower shell 202.

[0108] The direction of the line connecting the two openings 204 and 205 can be consistent with the length direction of the optical module 200, or can be inconsistent with the length direction of the optical module 200. For example, the opening 204 is located at the end of the optical module 200 (the right end of FIG. 3), and the opening 205 is also located at the end of the optical module 200 (the left end of FIG. 3). Alternatively, the opening 204 is located at the end of the optical module 200, and the opening 205 is located at the side of the optical module 200. The opening 204 is an electrical port, and the gold fingers of the circuit board 300 are inserted into the electrical connector of the host computer 100. The opening 205 is an optical port configured to access the external optical fiber 101, so that the optical fiber 101 is connected to the optical transmitting component 400 and the optical receiving component 500 in the optical module 200.

[0109] The upper shell 201 and the lower shell 202 are combined to facilitate the installation of the circuit board 300, the light emitting component 400, the light receiving component 500, and the like into the shells, and the shells can encapsulate and protect the components. In addition, when the circuit board 300, the light emitting component 400, and the light receiving component 500 are assembled, the positioning components, the heat dissipation components, and the electromagnetic shielding components of the components can be arranged, and the production can be automatically implemented.

[0110] In some embodiments, the upper shell 201 and the lower shell 202 are made of metal materials, which facilitates electromagnetic shielding and heat dissipation.

[0111] In some embodiments, the optical module 200 further includes an unlocking component 600 outside the shell. The unlocking component 600 is configured to achieve the fixed connection between the optical module 200 and the host computer or to release the fixed connection between the optical module 200 and the host computer. For example, the unlocking component 600 is located outside the two lower side plates 2022 of the lower shell 202 and includes a clamping component matched with the cage 106 of the host computer 100. When the optical module 200 is inserted into the cage 106, the optical module 200 is fixed in the cage 106 by the clamping component of the unlocking component 600. When the unlocking component 600 is pulled, the clamping component of the unlocking component 600 moves, thereby changing the connection relationship between the clamping component and the host computer, releasing the fixed connection between the optical module 200 and the host computer, and enabling the optical module 200 to be pulled out of the cage 106.

[0112] The circuit board 300 includes circuit traces, electronic components, and chips, etc. The electronic components and chips are connected according to circuit design through the circuit traces to realize power supply, electrical signal transmission, and grounding, etc. The electronic components may, for example, include capacitors, resistors, transistors, and Metal-Oxide-Semiconductor Field-Effect Transistors (MOSFETs). The chips may, for example, include Microcontroller Units (MCUs), laser drive chips, Transimpedance Amplifiers (TIAs), Limiting Amplifiers (LIAs), Clock and Data Recovery (CDR) chips, power management chips, and Digital Signal Processing (DSP) chips. The circuit board 300 is generally a rigid circuit board. Due to its relatively hard material, the rigid circuit board can also realize a bearing function, such as stably bearing the above-mentioned electronic components and chips. The rigid circuit board can also be inserted into the electrical connector in the cage 106 of the host computer 100.

[0113] The circuit board 300 also includes a gold finger formed on the surface of its end portion. The gold finger is composed of a plurality of pins that are independent of each other. The circuit board 300 is inserted into the cage 106, and the gold finger is in conduction with the electrical connector in the cage 106. The gold finger can be provided only on the surface (e.g., the upper surface shown in FIG. 4a) of one side of the circuit board 300, or can be provided on the surfaces of both upper and lower sides of the circuit board 300 to provide a larger number of pins, thereby adapting to occasions where a large number of pins are required. The gold finger is configured to establish electrical connection with the host computer to realize power supply, grounding, Inter-Integrated Circuit (I2C) signal transmission, data signal transmission, etc. Of course, flexible circuit boards are also used in some optical modules. The flexible circuit board is generally used in cooperation with the rigid circuit board to supplement the rigid circuit board.

[0114] At least one of the light emitting component 400 or the light receiving component 500 is located on the side of the circuit board 300 away from the gold finger.

[0115] In some embodiments, the light emitting component 400 and the light receiving component 500 are physically separated from the circuit board 300, and then are electrically connected to the circuit board 300 through corresponding flexible circuit boards or electrical connectors, respectively.

[0116] In some embodiments, at least one of the light emitting component 400 or the light receiving component 500 can be disposed directly on the circuit board 300. For example, at least one of the light emitting component 400 or the light receiving component 500 can be disposed on a surface of the circuit board 300 or a side edge of the circuit board 300.

[0117] The light emitting component and the light receiving component constitute a light transceiver component, and the light transceiver component is electrically connected to the circuit board 300. The light emitting component is a transmitting end of the light transceiver component, and the light receiving component is a receiving end of the light transceiver component. Both the transmitting end of the light transceiver component and the receiving end of the light transceiver component are electrically connected to the circuit board 300.

[0118] In some embodiments, one end of the light receiving component 500 can be connected to the light emitting component 400. For example, a light input end of the light receiving component 500 can be connected to a light output end of the light emitting component 400. In some embodiments, the light receiving component 500 can receive a received light signal including multiple wavelengths. For example, the light receiving component 500 receives a received light signal of three wavelengths, and the received light signal of the three wavelengths has different rates, such as a first wavelength light signal, a second wavelength light signal, and a third wavelength light signal having different rates. The first wavelength light signal includes a received light signal of a first wavelength, the second wavelength light signal includes a received light signal of a second wavelength, and the third wavelength light signal includes a received light signal of a third wavelength.

[0119] In some embodiments, the wavelength range of the first wavelength light signal can be 1284-1288 nm, or 1290-1330 nm, or 1260-1280 nm. For example, the wavelength range of the first wavelength light signal is 1284-1288 nm, such as the wavelength of the first wavelength light signal is 1286 nm.

[0120] In some embodiments, the wavelength range of the second wavelength light signal can be 1284-1288 nm, or 1290-1330 nm, or 1260-1280 nm. For example, the wavelength range of the second wavelength light signal is 1290-1330 nm, such as the wavelength of the second wavelength light signal is 1310 nm.

[0121] In some embodiments, the wavelength range of the third wavelength light signal can be 1284-1288 nm, or 1290-1330 nm, or 1260-1280 nm. For example, the wavelength range of the third wavelength light signal is 1260-1280 nm, such as the wavelength of the third wavelength light signal is 1270 nm.

[0122] In some embodiments, the light emitting component 400 can generate light signals of multiple wavelengths. The light signals of multiple wavelengths can be combined into one bundle of emitted light signals, so that the number of emitted light signals emitted by the light emitting component 400 is one bundle. For example, the light emitting component 400 can generate light signals of three wavelengths, and the light signals of three wavelengths have different rates, such as the fourth wavelength light signal, the fifth wavelength light signal and the sixth wavelength light signal having different rates.

[0123] In some embodiments, the fourth wavelength light signal has a wavelength range of 1340-1344 nm, such as a wavelength of 1342 nm; the fifth wavelength light signal has a wavelength range of 1575-1580 nm, such as a wavelength of 1577 nm; and the sixth wavelength light signal has a wavelength range of 1480-1500 nm, such as a wavelength of 1490 nm.

[0124] As shown in FIG. 4a, in some embodiments, the housing of the optical module 200 can be provided with a fiber adapter 700. One end of the fiber adapter 700 can be connected to the other end of the light receiving component 500, so that the externally input received light signal is input to the light receiving component 500 through the fiber adapter 700. For example, one end of the fiber adapter 700 can be connected to the light input / output end of the light receiving component 500.

[0125] In some embodiments, the light input end of the light receiving component 500 and the light input / output end of the light receiving component 500 can be arranged at two ends of the light receiving component 500 along the length direction of the light receiving component 500.

[0126] One end of the light receiving component 500 can be connected to the light emitting component 400, and the other end of the light receiving component 500 can be connected to one end of the fiber adapter 700, and the light emitting direction of the light emitting component 400 is towards the fiber adapter 700, so that the emitted light signal emitted by the light emitting component 400 is first transmitted into the light receiving component 500, then transmitted to the fiber adapter 700 through the light receiving component 500, and finally output through the fiber adapter 700. The light receiving component 500 and the light emitting component 400 share the fiber adapter 700, and thus the uplink light signal and the downlink light signal of the optical module share the optical fiber 101.

[0127] In some embodiments, the number of emitted light signals (i.e., emitted light beams) from the light emitting component 400 is less than the number of received light signals (i.e., received light beams) from the outside in the light signals incident to the light receiving component 500. For example, the number of emitted light signals (i.e., emitted light beams) from the light emitting component 400 is at least two less than the number of received light signals (i.e., received light beams) from the outside in the light signals incident to the light receiving component 500, so as to reduce the difficulty of light splitting in the light receiving component 500. In some embodiments, the light emitting component 400 and the circuit board 300 can be connected by the flexible circuit board 900. In some embodiments, the light receiving component 500 and the circuit board 300 can be connected by the flexible circuit board 900.

[0128] FIG. 4b is an assembly view of a light transceiver component, a fiber optic adapter, and a circuit board from another perspective, according to some embodiments. FIG. 4c is an exploded view of a light transceiver component, a fiber optic adapter, and a circuit board, according to some embodiments. As shown in FIG. 4a, FIG. 4b, and FIG. 4c, in some embodiments, the electrical input end of the light emitting component 400 and the circuit board 300 can be connected by the flexible circuit board 900. In some embodiments, the electrical input end of the light emitting component 400 can include a first electrical input end. The first electrical input end can be located on a side wall of the light emitting component 400. The first electrical input end can be located on a side wall of the light emitting component 400 close to the circuit board 300. In some embodiments, the electrical input end of the light emitting component 400 can include a second electrical input end. The second electrical input end can be located on a side wall of the light emitting component 400. The second electrical input end and the first electrical input end can be located on different side walls of the light emitting component 400.

[0129] In some embodiments, the side wall where the second electrical input end is located is adjacent to the side wall where the first electrical input end is located. For example, the first electrical input end can be located on a third side wall of the light emitting component 400, and the second electrical input end can be located on a fourth side wall of the light emitting component 400. The third side wall and the fourth side wall are adjacent to each other and connected.

[0130] As shown in FIG. 4a, FIG. 4b and FIG. 4c, in some embodiments, the electrical input end of the light receiving component 500 and the circuit board 300 can be connected by a flexible circuit board 900. In some embodiments, the electrical input end of the light receiving component 500 can be arranged along the width direction of the light receiving component 500. In some embodiments, the electrical input end of the light receiving component 500 can include a first electrical input end. The first electrical input end can be located at one side wall of the light receiving component 500. In some embodiments, the electrical input end of the light receiving component 500 can include a second electrical input end. The second electrical input end can be located at one side wall of the light receiving component 500. In some embodiments, the electrical input end of the light receiving component 500 can include a third electrical input end. The third electrical input end can be located at one side wall of the light receiving component 500.

[0131] In some embodiments, any two of the first electrical input end, the second electrical input end and the third electrical input end can be located at one side wall of the light receiving component 500, and the other electrical input end can be located at another side wall of the light receiving component 500, so as to reduce the length of the light receiving component 500. For example, the first electrical input end is located at the fourth side wall of the light receiving component 500, and the second electrical input end and the third electrical input end are located at the second side wall of the light receiving component 500.

[0132] In some embodiments, the first electrical input end, the second electrical input end and the third electrical input end are located at the same side wall.

[0133] FIG. 4d is an exploded view of a flexible circuit board according to some embodiments. FIG. 4e is an assembly view of a light transceiver component and a portion of a flexible circuit board according to some embodiments. FIG. 4f is an assembly view of a light transceiver component and another portion of a flexible circuit board according to some embodiments. As shown in FIG. 4d, FIG. 4e and FIG. 4f, in some embodiments, the flexible circuit board 900 can include a first flexible circuit board 901. One end of the first flexible circuit board 901 can be connected to the upper surface of the circuit board 300. The other end of the first flexible circuit board 901 can be connected to the first electrical input end of the light emitting component 400.

[0134] One end of the first flexible circuit board 901 can be connected to the upper surface of the circuit board 300, and the other end of the first flexible circuit board 901 can be connected to the first electrical input end of the light emitting component 400, so that the first electrical input end of the light emitting component 400 and the circuit board 300 are connected by the first flexible circuit board 901, and thus the electrical signal between the first electrical input end of the light emitting component 400 and the circuit board 300 is transmitted through the first flexible circuit board 901.

[0135] As shown in FIGS. 4d, 4e, and 4f, in some embodiments, the flexible circuit board 900 can include a second flexible circuit board 902. One end of the second flexible circuit board 902 can be connected with the lower surface of the circuit board 300. Another end of the second flexible circuit board 902 can be connected with the second electrical input end of the light emitting component 400. Another end of the second flexible circuit board 902 can be connected with the first electrical input end of the light receiving component 500.

[0136] In some embodiments, the second flexible circuit board 902 can include a first end 921. The first end 921 can be connected with the lower surface of the circuit board 300.

[0137] In some embodiments, the second flexible circuit board 902 can include a second end 922. The second end 922 can be connected with the second electrical input end of the light emitting component 400. The second end 922 can be connected with the first end 921. In some embodiments, the second flexible circuit board 902 can include a third end 923. The third end 923 can be connected with the first electrical input end of the light receiving component 500. The third end 923 can be connected with the first end 921. There can be a gap between the third end 923 and the second end 922, such that the second end 922 is not connected with the third end 923.

[0138] The first end of the second flexible circuit board 902 can be connected with the lower surface of the circuit board 300, the second end of the second flexible circuit board 902 can be connected with the second electrical input end of the light emitting component 400, and the third end of the second flexible circuit board 902 can be connected with the first electrical input end of the light receiving component 500, such that the second electrical input end of the light emitting component 400 and the first electrical input end of the light receiving component 500 are both connected with the circuit board 300 through the second flexible circuit board 902, so that the electrical signals between the second electrical input end of the light emitting component 400 and the circuit board 300 and the first electrical input end of the light receiving component 500 and the circuit board 300 are both transmitted through the second flexible circuit board 902.

[0139] As shown in FIGS. 4d, 4e, and 4f, in some embodiments, the flexible circuit board 900 can include a third flexible circuit board 903. One end of the third flexible circuit board 903 can be connected with the lower surface of the circuit board 300. Another end of the third flexible circuit board 903 can be connected with the second electrical input end of the light receiving component 500.

[0140] The one end of the third flexible circuit board 903 can be connected with the lower surface of the circuit board 300, and the other end of the third flexible circuit board 903 can be connected with the second electrical input end of the light receiving component 500, such that the second electrical input end of the light receiving component 500 is connected with the circuit board 300 through the third flexible circuit board 903, so that the electrical signals between the second electrical input end of the light receiving component 500 and the circuit board 300 are transmitted through the third flexible circuit board 903.

[0141] As shown in FIG. 4d, FIG. 4e and FIG. 4f, in some embodiments, the flexible circuit board 900 can include a fourth flexible circuit board 904. One end of the fourth flexible circuit board 904 can be connected with the upper surface of the circuit board 300. The other end of the fourth flexible circuit board 904 can be connected with the third electrical input end of the light receiving component 500.

[0142] One end of the fourth flexible circuit board 904 can be connected with the upper surface of the circuit board 300, and the other end of the fourth flexible circuit board 904 can be connected with the third electrical input end of the light receiving component 500, so that the third electrical input end of the light receiving component 500 is connected with the circuit board 300 through the fourth flexible circuit board 904, and thus the electrical signal between the third electrical input end of the light receiving component 500 and the circuit board 300 is transmitted through the fourth flexible circuit board 904.

[0143] FIG. 5a is a partial view of the internal structure of an optical module according to some embodiments. FIG. 5b is a partial exploded view of the internal structure of an optical module according to some embodiments. FIG. 6 is a partial view of a light receiving component according to some embodiments. As shown in FIG. 5a, FIG. 5b and FIG. 6, in some embodiments, the first end of the light receiving component 500 can be connected with the fiber adapter 700. The second end of the light receiving component 500 can be connected with the light emitting component 400.

[0144] In some embodiments, the light receiving component 500 can include a first cavity. One end of the first cavity can be connected with the light emitting component 400. The other end of the first cavity can be connected with the fiber adapter 700, so that the first cavity can receive the received light signal transmitted by the fiber adapter 700. One end of the first cavity can be connected with the light emitting component 400, and the other end of the first cavity can be connected with one end of the fiber adapter 700, so that the emitted light signal emitted by the light emitting component 400 is first transmitted into the first cavity, then transmitted to the fiber adapter 700 through the first cavity, and finally output through the fiber adapter 700.

[0145] As shown in FIG. 5a, FIG. 5b and FIG. 6, in some embodiments, the light receiving component 500 can include at least one receiving assembly. The at least one light receiving assembly can be connected with the first cavity, so that the received light signal (including light signals of multiple wavelengths) input from outside is input into the first cavity through the fiber adapter 700, and then transmitted to the at least one light receiving assembly through the first cavity.

[0146] In some embodiments, the light receiving component 500 can include a first light receiving assembly 530. The first light receiving assembly 530 can be connected with the first cavity, so that the externally inputted received light signals (including light signals of multiple wavelengths) are inputted into the first cavity through the fiber adapter 700, and then transmitted to the first light receiving assembly 530 through the first cavity. The first light receiving assembly 530 can receive third wavelength light signals. For example, the first light receiving assembly 530 can receive received light signals with a wavelength range of 1260-1280 nm.

[0147] In some embodiments, the light receiving component 500 can include a second light receiving assembly 520. The second light receiving assembly 520 can be connected with the first cavity, so that the externally inputted received light signals (including light signals of multiple wavelengths) are inputted into the first cavity through the fiber adapter 700, and then transmitted to the second light receiving assembly 520 through the first cavity. The second light receiving assembly 520 can receive first wavelength light signals. For example, the second light receiving assembly 520 can receive received light signals with a wavelength range of 1284-1288 nm.

[0148] In some embodiments, the light receiving component 500 can include a third light receiving assembly 540. The third light receiving assembly 540 can be connected with the first cavity, so that the externally inputted received light signals (including light signals of multiple wavelengths) are inputted into the first cavity through the fiber adapter 700, and then transmitted to the third light receiving assembly 540 through the first cavity. The third light receiving assembly 540 can receive second wavelength light signals. For example, the third light receiving assembly 540 can receive received light signals with a wavelength range of 1290-1330 nm.

[0149] The light receiving component 500 can include the first light receiving assembly 530, the second light receiving assembly 520 and the third light receiving assembly 540, so that the light receiving component 500 can receive light signals of three wavelengths with different rates.

[0150] In some embodiments, the first light receiving assembly 530, the second light receiving assembly 520 and the third light receiving assembly 540 can adopt coaxial packaging. For example, the receiving optical axes of the first light receiving assembly 530, the second light receiving assembly 520 and the third light receiving assembly 540 are parallel to each other. That is, the first light receiving assembly 530, the second light receiving assembly 520 and the third light receiving assembly 540 each include a receiving cap and a receiving base, the receiving cap is arranged on the receiving base to form a receiving cavity, and a light receiving chip is arranged in the receiving cavity. The light receiving chip receives light signals and converts the light signals into electrical signals.

[0151] The receiving tube base is also provided with a receiving tube pin, one end of the receiving tube pin is connected with the circuit board 300 through the flexible circuit board 900 to realize the electrical connection between the receiving tube pin and the circuit board 300. The receiving tube pin extends upward from the bottom of the receiving tube base until it exceeds the top of the receiving tube base and is connected with the pad where the light receiving chip is located by wire bonding to realize the electrical connection between the receiving tube pin and the light receiving chip, and then the electrical signal is transmitted to the circuit board 300 through the receiving tube pin.

[0152] The receiving tube pin of the light receiving assembly is the electrical input end of the light receiving component 500. For example, the receiving tube pin of the first light receiving assembly 530 is the second electrical input end of the light receiving component 500, the receiving tube pin of the second light receiving assembly 520 is the third electrical input end of the light receiving component 500, and the receiving tube pin of the third light receiving assembly 540 is the first electrical input end of the light receiving component 500. As shown in FIGS. 6, 8 and 9, the fourth flexible circuit board 904 is connected with the receiving tube pin of the second light receiving assembly 520, the third flexible circuit board 903 is connected with the receiving tube pin of the first light receiving assembly 530, and the second flexible circuit board 902 is connected with the receiving tube pin of the third light receiving assembly 540.

[0153] In some embodiments, the top of the receiving cap of the light receiving assembly is provided with a second lens. The second lens is a converging lens that can converge and couple the light signal incident on the second lens to the light receiving chip in the receiving cavity. The second lens can protrude from the receiving cap or not. When the second lens does not protrude from the receiving cap, a 0° filter can be directly attached to the top of the light receiving assembly. The 0° filter can allow a certain specific wavelength of light signal to pass through to reduce the incidence of other wavelengths of light signal to the light receiving chip of the light receiving assembly. For example, the top of the second light receiving assembly 520 is directly attached with a second filter 5178, which is a 0° filter and can allow the second wavelength light signal to pass through.

[0154] When the second lens protrudes from the receiving cap, a 0° filter is attached to the top of the light receiving assembly through the bracket 550. For example, the top of the first light receiving assembly 530 is attached with a first filter 5177 through the bracket 550, which is a 0° filter and can allow the first wavelength light signal to pass through.

[0155] In some embodiments, the receiving rate of the light receiving chip of the first light receiving assembly 530, the receiving rate of the light receiving chip of the second light receiving assembly 520, and the receiving rate of the light receiving chip of the third light receiving assembly 540 can all be different, so as to improve the transmission rate and enhance the stability of the system. For example, the receiving rate of the light receiving chip of the second light receiving assembly 520 is greater than the receiving rate of the light receiving chip of the first light receiving assembly 530 and greater than the receiving rate of the light receiving chip of the third light receiving assembly 540. For example, the receiving rate of the light receiving chip of the first light receiving assembly 530 is 10G, the receiving rate of the light receiving chip of the second light receiving assembly 520 is 25G, and the receiving rate of the light receiving chip of the third light receiving assembly 540 is 2.5G.

[0156] In some embodiments, the first light receiving assembly 530, the second light receiving assembly 520, and the third light receiving assembly 540 can all be located on the same side of the light receiving component 500. In some embodiments, the first light receiving assembly 530 and the second light receiving assembly 520 can be located on one side of the light receiving component 500, and the third light receiving assembly 540 can be located on the other side of the light receiving component 500, so as to reduce the length of the light receiving component 500.

[0157] As shown in FIGS. 5a, 5b, and 6, in some embodiments, the first cavity can include a first connecting hole 5111. The first connecting hole 5111 can be located at the light input / output end of the light receiving component 500. The first connecting hole 5111 can be connected with the fiber adapter 700, so as to connect the fiber adapter 700 with the first cavity. For example, one end of the connecting sleeve 710 is inserted into the first connecting hole 5111, and the other end of the connecting sleeve 710 is connected with the fiber adapter 700, so as to connect the fiber adapter 700 with the first cavity through the connecting sleeve 710.

[0158] As shown in FIGS. 5a, 5b, and 6, in some embodiments, the first cavity can include a second connecting hole 5131. The second connecting hole 5131 can be located at the light input end of the light receiving component 500, so as to connect the light emitting component 400 with the first cavity.

[0159] In some embodiments, the first connecting hole 5111 and the second connecting hole 5131 can be oppositely arranged.

[0160] In some embodiments, an isolator can be arranged in the second connecting hole 5131. The isolator can allow the emitted light signal emitted by the light emitting component 400 to be incident on the light receiving component 500, and prevent the emitted light signal incident on the light receiving component 500 from returning to the light emitting component 400.

[0161] As shown in FIGS. 5a, 5b and 6, in some embodiments, the first cavity can include a third connecting hole 5141. The third connecting hole 5141 can be used for insertion of the third light receiving assembly 540, so that the third light receiving assembly 540 is connected with the first cavity.

[0162] As shown in FIGS. 5a, 5b and 6, in some embodiments, the first cavity can include a fourth connecting hole 5121. The fourth connecting hole 5121 can be used for insertion of the second light receiving assembly 520, so that the second light receiving assembly 520 is connected with the first cavity.

[0163] As shown in FIGS. 5a, 5b and 6, in some embodiments, the first cavity can include a fifth connecting hole 5122. The fifth connecting hole 5122 can be used for insertion of the first light receiving assembly 530, so that the first light receiving assembly 530 is connected with the first cavity.

[0164] In some embodiments, the fourth connecting hole 5121 and the fifth connecting hole 5122 can be located at one sidewall of the first cavity, and the third connecting hole 5141 is located at another sidewall of the first cavity, so as to reduce the length dimension of the first cavity.

[0165] FIG. 7a is a partial view II of a light receiving component according to some embodiments, showing the assembly relationship of the first light receiving assembly with the bracket and the first filter. FIG. 7b is a partial sectional view of a light receiving component according to some embodiments, showing the sectional structure of the first light receiving assembly with the bracket and the first filter. FIG. 7c is a partial exploded view of a light receiving component according to some embodiments, showing the exploded structure of the first light receiving assembly with the bracket and the first filter. As shown in FIGS. 7a, 7b and 7c, in some embodiments, the first light receiving assembly 530 can include a receiving tube base 532, a receiving tube cap 533 and a receiving tube pin 531. The receiving tube cap 533 is arranged on the top of the receiving tube base 532 to form a receiving cavity, and a light receiving chip is arranged in the receiving cavity. The receiving tube pin 531 extends upward from the bottom of the receiving tube base 532 to protrude from the top of the receiving tube base 532, and is connected with the light receiving chip in the receiving cavity. The second lens 534 is arranged on the receiving tube cap 533. As shown in FIGS. 5b, 7b and 7c, in some embodiments, the top of the first light receiving assembly 530 is provided with a bracket 550, and the first filter 5177 is attached to the bracket 550.

[0166] FIG. 8a is a structural diagram of a bracket according to some embodiments. FIG. 8b is a structural diagram of a bracket from another perspective according to some embodiments. As shown in FIG. 8a and FIG. 8b, in some embodiments, the bracket 550 can include a first fixed portion 551. The bottom surface of the first fixed portion 551 can be in contact with the outer top surface of the receiving cap 533, so that the first fixed portion 551 is fixedly connected with the receiving cap 533.

[0167] As shown in FIG. 8a and FIG. 8b, in some embodiments, the bracket 550 can include a second fixed portion 552. The bottom surface of the second fixed portion 552 can be in contact with the top surface of the first fixed portion 551, so that the second fixed portion 552 is fixedly connected with the first fixed portion 551. The top surface of the second fixed portion 552 can be attached with the first filter 5177. As shown in FIG. 8a and FIG. 8b, in some embodiments, the bracket 550 can include an enclosing portion 553. The inner surface of the enclosing portion 553 is in contact with the outer surface of the second fixed portion 552, so that the enclosing portion 553 is fixedly connected with the second fixed portion 552.

[0168] In some embodiments, the height dimension of the enclosing portion 553 is greater than the height dimension of the second fixed portion 552, so as to enclose the first filter 5177.

[0169] As shown in FIG. 8a and FIG. 8b, in some embodiments, the bracket 500 has a first light passing hole 554. The first light passing hole 554 can extend from the first fixed portion 551 to the second fixed portion 552, so that the first light passing hole 554 can pass through the bracket 500, and thus the light signal of the first cavity can be incident on the first light receiving assembly 530 through the first light passing hole 554.

[0170] In some embodiments, the first filter 5177 is disposed at the port of the first light passing hole 554, so as to block the port of the first light passing hole 554, and thus the light signal (i.e., the third wavelength light signal) passing through the first filter 5177 can be incident on the first light receiving assembly 530 through the first light passing hole 554. For example, the size of the first filter 5177 is greater than the size of the first light passing hole 554.

[0171] In some embodiments, the size of the first light passing hole 554 is greater than or equal to the size of the second lens 534, so that the first light passing hole 554 can accommodate the second lens 534, and thus the light signal of the first cavity can be coupled into the light receiving chip of the first light receiving assembly 530 through the second lens 534 in the first light passing hole 554.

[0172] The first light hole 554 can accommodate the second lens 534. The first filter 5177 is disposed on the first light hole 554, so that the light signal (i.e., the third wavelength light signal) passing through the first filter 5177 is coupled to the light receiving chip of the first light receiving assembly 530 through the second lens 534 in the first light hole 554.

[0173] FIG. 9a is an exploded view of a first cavity according to some embodiments. FIG. 9b is a partial exploded view of a first cavity showing the exploded relationship between a first housing and a receiving optical assembly according to some embodiments. As shown in FIG. 9a and FIG. 9b, in some embodiments, the first cavity can include a first cover plate 515.

[0174] As shown in FIG. 9a and FIG. 9b, in some embodiments, the first cavity can include a first housing 510. The first cover plate 515 can be coupled to the first housing 510 to form the first cavity. The first optical assembly 517 can be disposed in the first cavity. The first optical assembly 517 can transmit the emitted light signal to the fiber adapter 700, and can also split the received light signal transmitted by the fiber adapter 700 to the first cavity, and then the split light signal is incident to the corresponding light receiving assembly.

[0175] A light receiving component corresponds to a first optical assembly. For example, a first light receiving component corresponds to a first first optical assembly. In the assembly process, the first optical assembly 517 is first fixed in the first housing 510, and then the first cover plate 515 is coupled to the first housing 510 to form the first cavity.

[0176] FIG. 10 is a partial optical path diagram of a first light receiving component according to some embodiments. As shown in FIG. 10, in some embodiments, the first optical assembly 517a can include a first lens 5171. The first lens 5171 is used to collimate / converge the light signal. For example, the received light signal transmitted by the fiber adapter 700 to the first cavity is converged by the first lens 5171, and the light signal transmitted by the fiber adapter 700 to the first cavity is collimated by the first lens 5171.

[0177] As shown in FIG. 10, in some embodiments, the first optical assembly 517a can include a wave splitting assembly 5172. The first end of the wave splitting assembly 5172 can be disposed corresponding to the first end of the light receiving component 500, and the second end of the wave splitting assembly 5172 can be disposed corresponding to the second end of the light receiving component 500, so that the wave splitting assembly 5172 can be disposed along the length direction of the light receiving component 500.

[0178] The wavelength division component 5172 can be arranged along the length direction of the light receiving component 500, i.e., the wavelength division component 5172 can be arranged along the length direction of the first housing 510, so as to reduce the width dimension of the first housing 510, and further reduce the width dimension of the light receiving component 500. When the wavelength division component 5172 is arranged along the length direction of the first housing 510, the width dimension of the first housing 510 required to accommodate the wavelength division component 5172 can be reduced. Since the length dimension of the receiving pin of the light receiving component is small, the width dimension of the first housing 510 is reduced, and the width dimension of the light receiving component 500 is also reduced.

[0179] In some embodiments, the wavelength division component 5172 can be located between the first lens 5171 and the light emitting component 400, and the wavelength division component 5172 is arranged along the length direction of the light receiving component 500, so that the wavelength division component 5172 can transmit the emitted light signal emitted by the light emitting component 400 to the first lens 5171. The wavelength division component 5172 can split the light signal collimated by the first lens 5171 according to wavelength. For example, the wavelength division component 5172 splits a bundle of received light signals including a first wavelength, a second wavelength and a third wavelength into a first wavelength light signal, a second wavelength light signal and a third wavelength light signal according to wavelength.

[0180] The wavelength division component 5172 can transmit the emitted light signal (i.e., the emitted light beam) emitted by the light emitting component 400 to the first lens 5171, and can also split the received light signal (i.e., the received light beam) collimated by the first lens 5171 according to wavelength, so as to reduce the distance between the emitted light beam and the received light beam in the width direction of the first housing 510, and further reduce the width dimension of the light receiving component 500.

[0181] In some embodiments, the first end of the wavelength division component 5172 has a receiving light entrance, and the second end of the wavelength division component 5172 has an emitting light entrance. The emitted light signal emitted by the light emitting component 400 is incident to the emitting light entrance of the second end of the wavelength division component 5172, and is emitted through the receiving light entrance of the first end of the wavelength division component 5172. The received light signal including the first wavelength, the second wavelength and the third wavelength transmitted by the fiber adapter 700 is incident to the receiving light entrance of the first end of the wavelength division component 5172, and is reflected through the emitting light entrance of the second end of the wavelength division component 5172. The optical path of the emitted light signal and the optical path of the received light signal coincide in the width direction of the light receiving component 500, so as to reduce the width dimension of the light receiving component 500.

[0182] In some embodiments, the wavelength separation component 5172 has a first light exit, a second light exit, and a third light exit, such that the first wavelength light signal after being split by the wavelength separation component 5172 exits the wavelength separation component 5172 through the second light exit, the third wavelength light signal exits the wavelength separation component 5172 through the first light exit, and the third wavelength light signal exits the wavelength separation component 5172 through the third light exit. For example, the first end of the wavelength separation component 5172 has the first light exit, and the second end of the wavelength separation component 5172 has the second light exit and the third light exit.

[0183] The first wavelength light signal, the second wavelength light signal, and the third wavelength light signal after being split are incident on the corresponding light receiving components. For example, the first wavelength light signal is incident on the second light receiving component, the second wavelength light signal is incident on the third light receiving component, and the third wavelength light signal is incident on the first light receiving component.

[0184] The first wavelength light signal after exiting through the second light exit is incident on the second light receiving component, the third wavelength light signal after exiting through the first light exit is incident on the first light receiving component, and the second wavelength light signal after exiting through the third light exit is incident on the third light receiving component, to complete the transmission of the received light signals after being split. In some embodiments, the first end of the wavelength separation component 5172 and the second end of the wavelength separation component 5172 are arranged in parallel, such that the emitted light signals incident on the second end of the wavelength separation component 5172 and the emitted light signals exiting through the first end of the wavelength separation component 5172 are parallel to each other.

[0185] In some embodiments, the first end of the wavelength separation component 5172 has a first preset range of inclination angles, such that the received light signals including the first wavelength, the second wavelength, and the third wavelength incident on the wavelength separation component 5172 can be separated into the first wavelength light signal, the second wavelength light signal, and the third wavelength light signal by the wavelength separation component 5172. For example, the first preset range is 8°±1°.

[0186] In some embodiments, the wavelength separation component 5172 can include a wavelength separation component 5172a, and the wavelength separation component 5172a can include a first substrate 51721. The first substrate 51721 is a block substrate. The first end surface of the first substrate 51721 is arranged corresponding to the first end of the light receiving component 500, and the second end surface of the first substrate 51721 is arranged corresponding to the second end of the light receiving component 500, such that the first substrate 51721 is arranged along the length direction of the light receiving component 500. The first end surface of the first substrate 51721 can face the first lens 5171. The second end surface of the first substrate 51721 can face the second connecting hole 5131.

[0187] The first end surface of the first substrate 51721 and the second end surface of the first substrate 51721 are arranged in parallel, so that the optical signal incident to the first substrate 51721 and the optical signal emitted from the first substrate 51721 are parallel to each other.

[0188] The first end surface of the first substrate 51721 can be directed towards the first lens 5171, and the second end surface of the first substrate 51721 can be directed towards the second connecting hole 5131, so that the first substrate 51721 can be arranged along the horizontal direction of the first cavity.

[0189] In some embodiments, the wave splitting component 5172a can include a first wave plate 51722. The first wave plate 51722 can be arranged on the first end surface of the first substrate 51721. The first wave plate 51722 can be located between the first lens 5171 and the first substrate 51721. The first wave plate 51722 is the receiving light-in light position of the first end of the wave splitting component 5172a. The first wave plate 51722 can allow the emitted optical signal and the received optical signal to pass through.

[0190] The central axis of the first wave plate 51722 and the central axis of the first lens 5171 can coincide, so that the received optical signal collimated by the first lens 5171 is incident to the first wave plate 51722, and the emitted optical signal of the first wave plate 51722 can be focused and coupled by the first lens 5171.

[0191] In some embodiments, the wave splitting component 5172a can include a second wave plate 51723a. The second wave plate 51723a can be arranged on the first end surface of the first substrate 51721. One side of the second wave plate 51723a can be connected with the first wave plate 51722. The second wave plate 51723a can allow the received optical signal to be reflected.

[0192] In some embodiments, the wave splitting component 5172a can include a third wave plate 51724a. The third wave plate 51724a can be arranged on the first end surface of the first substrate 51721. One side of the third wave plate 51724a can be connected with the other side of the second wave plate 51273. The third wave plate 51724a is the first light-out position of the first end of the wave splitting component 5172a. In some embodiments, the third wave plate 51724a can be a low-pass filter, which can allow low-frequency signals to pass through and block high-frequency signals. For example, the third wave plate 51724a can allow the third wavelength optical signal to be transmitted, and can also allow the first wavelength optical signal and the second wavelength optical signal to be reflected. The third wave plate 51724a can serve as the first light-out position of the first end of the wave splitting component 5172a, so that the third wavelength optical signal is transmitted out of the third wave plate 51724a.

[0193] In some embodiments, the wave splitting component 5172a can include a fourth wave plate 51725. The fourth wave plate 51725 can be disposed on the second end surface of the first substrate 51721. The fourth wave plate 51725 can be disposed opposite to the first wave plate 51722. The fourth wave plate 51725 can be located between the first substrate 51721 and the second connecting hole 5131. The fourth wave plate 51725 is the second end of the wave splitting component 5172a where the emitted light enters. The fourth wave plate 51725 can allow the received light signal to be reflected and can allow the emitted light signal to be transmitted. The central axis of the fourth wave plate 51725 can coincide with the central axis of the second connecting hole 5131, so that the emitted light signal incident on the first cavity through the second connecting hole 5131 is incident on the fourth wave plate 51725. The second wave plate 51723a can be located on the reflected light path of the fourth wave plate 51725, so that the second wave plate 51723a can receive the received light signal reflected by the fourth wave plate 51725.

[0194] In some embodiments, the wave splitting component 5172a can include a fifth wave plate 51726a. The fifth wave plate 51726a can be disposed on the second end surface of the first substrate 51721. The fifth wave plate 51726a can be disposed opposite to the second wave plate 51723a. One side of the fifth wave plate 51726a can be connected to the fourth wave plate 51725. The fifth wave plate 51726a is the second light exit of the second end of the wave splitting component 5172a. The fifth wave plate 51726a can be located on the reflected light path of the second wave plate 51723a, so that the fifth wave plate 51726a can receive the received light signal reflected by the second wave plate 51723a.

[0195] In some embodiments, the fifth wave plate 51726a can be a band-pass filter that allows signals within a certain frequency range to pass through and blocks signals of other frequencies. For example, the fifth wave plate 51726a can allow the first wavelength light signal to be transmitted and can allow the third wavelength light signal and the second wavelength light signal to be reflected.

[0196] The fifth wave plate 51726a can serve as the second light exit of the second end of the wave splitting component 5172a, so that the first wavelength light signal is transmitted out through the fifth wave plate 51726a. The third wave plate 51724a can be located on the reflected light path of the fifth wave plate 51726a, so that the third wave plate 51724a can receive the received light signal reflected by the fifth wave plate 51726a.

[0197] In some embodiments, the wave splitting component 5172a can include a sixth wave plate 51727a. The sixth wave plate 51727a can be disposed on the second end surface of the first substrate 51721. The sixth wave plate 51727a can be disposed opposite to the third wave plate 51724a. The sixth wave plate 51727a can be connected to the other side of the fifth wave plate 51726a. The sixth wave plate 51727a is a third light exit at the second end of the wave splitting component 5172a.

[0198] The sixth wave plate 51727a can be located on the reflected light path of the third wave plate 51724a, so that the sixth wave plate 51727a can receive the received light signal reflected by the third wave plate 51724a.

[0199] In some embodiments, the sixth wave plate 51727a can be a high-pass filter, which can allow high-frequency signals to pass through and prevent low-frequency signals from passing through. For example, the sixth wave plate 51727a can allow the second wavelength light signal to be transmitted, and can also allow the first wavelength light signal and the third wavelength light signal to be reflected. The sixth wave plate 51727a can serve as a third light exit at the second end of the wave splitting component 5172a, so that the second wavelength light signal is transmitted out of the sixth wave plate 51727a.

[0200] The fourth wave plate 51725, the fifth wave plate 51726a, and the sixth wave plate 51727a can be connected in sequence to reduce the length of the second end surface of the first substrate 51721.

[0201] In some embodiments, the center distance between any two wave plates of the fourth wave plate 51725, the fifth wave plate 51726a, and the sixth wave plate 51727a is greater than a first preset value, so as to increase the distance between the first wavelength light signal transmitted by the fifth wave plate 51726a and the second wavelength light signal transmitted by the sixth wave plate 51727a, thereby improving the isolation. For example, the first preset value is 1000 nm, and the center distance between any two wave plates of the fourth wave plate 51725, the fifth wave plate 51726a, and the sixth wave plate 51727a is greater than 1000 nm.

[0202] The first wave plate 51722, the second wave plate 51723a, and the third wave plate 51724a can be connected in sequence to reduce the length of the first end surface of the first substrate 51721.

[0203] Since the multiple wave plates of the first end surface of the first substrate 51721 and the multiple wave plates disposed opposite to the second end surface of the first substrate 51721, the center distance between any two wave plates of the first wave plate 51722, the second wave plate 51723a, and the third wave plate 51724a is 1000 nm.

[0204] The third wave plate 51724a is located at the first end surface of the first substrate 51721, and the fifth wave plate 51726a and the sixth wave plate 51727a are located at the second end surface of the first substrate 51721, so that the emission direction of the light signal transmitted through the third wave plate 51724a is opposite to the emission direction of the light signal transmitted through the fifth wave plate 51726a or the light signal transmitted through the sixth wave plate 51727a, thereby improving the isolation degree.

[0205] As shown in FIG. 10, in some embodiments, the first optical assembly 517a can include a first reflecting sheet 5173. The first reflecting sheet 5173 can be located on the output light path of the fifth wave plate 51726a, so as to reflect the light signal transmitted through the fifth wave plate 51726a. The first reflecting sheet 5173 can allow the first wavelength light signal transmitted through the fifth wave plate 51726a to be reflected.

[0206] As shown in FIG. 10, in some embodiments, the first optical assembly 517a can include a second reflecting sheet 5176. The second reflecting sheet 5176 can be located on the output light path of the third wave plate 51724a, so as to reflect the light signal transmitted through the third wave plate 51726. The second reflecting sheet 5176 can allow the third wavelength light signal transmitted through the third wave plate 51724a to be reflected.

[0207] As shown in FIG. 10, in some embodiments, the first optical assembly 517a can include a third reflecting sheet 5175. The third reflecting sheet 5175 can be located on the output light path of the sixth wave plate 51727a, so as to reflect the light signal transmitted through the sixth wave plate 51727a. The third reflecting sheet 5175 can allow the second wavelength light signal transmitted through the sixth wave plate 51727a to be reflected.

[0208] As shown in FIG. 10, the first optical assembly 517a can include a first filter sheet 5177. The first filter sheet 5177 can be located on the reflected light path of the second reflecting sheet 5176. In some embodiments, the first filter sheet 5177 can be attached to the top of the first light receiving assembly 530, for filtering the light signal, so that the first light receiving assembly 530 receives the third wavelength light signal.

[0209] As shown in FIG. 10, the first optical assembly 517a can include a second filter sheet 5178. The second filter sheet 5178 can be located on the reflected light path of the first reflecting sheet 5173. In some embodiments, the second filter sheet 5178 can be attached to the top of the second light receiving assembly 520, for filtering the light signal, so that the second light receiving assembly 520 receives the first wavelength light signal.

[0210] As shown in FIG. 10, in some embodiments, the first optical assembly 517a can include a third filter 5174. The third filter 5174 can be located on the output light path of the sixth waveplate 51727a. The third filter 5174 can allow the light signal transmitted by the sixth waveplate to pass through. For example, the third filter 5174 can allow the second wavelength light signal to pass through. In some embodiments, the third filter 5174 can be attached to the top of the third light receiving assembly 540 for filtering the light signal so that the third light receiving assembly 540 receives the second wavelength light signal.

[0211] In some embodiments, the third filter 5174 can be located between the sixth waveplate 51727a and the third light receiving assembly 540, and the third filter 5174 is not connected to the third light receiving assembly 540. For example, the third filter 5174 can be located between the sixth waveplate 51727a and the third light receiving assembly 540, and the third filter 5174 is not connected to the third light receiving assembly 540.

[0212] As shown in FIG. 10, the light path is as follows: the transmitted light signal is transmitted by the fourth waveplate 51725 and the first waveplate 51722 in turn, and then focused and coupled to the fiber adapter 700 by the first lens 5171. The received light signal is collimated by the first lens 5171 first, then transmitted by the first waveplate 51722, and then reflected by the fourth waveplate 51725 and the second waveplate 51723a in turn before being incident on the fifth waveplate 51726a. The first wavelength light signal in the received light signal is first transmitted by the fifth waveplate 51726a, then reflected by the first reflecting plate 5173 before being incident on the second filter 5178. The third wavelength light signal in the received light signal is first reflected by the fifth waveplate 51726a, then transmitted by the third waveplate 51724a, and then reflected by the second reflecting plate 5176 before being incident on the first filter 5177. The second wavelength light signal in the received light signal is first reflected by the fifth waveplate 51726a and the third waveplate 51724a, then transmitted by the sixth waveplate 51727a, then filtered by the third filter 5174, and finally reflected by the third reflecting plate 5175.

[0213] FIG. 11a is a structural diagram of a first housing according to some embodiments. FIG. 11b is a structural diagram of a first housing from another perspective according to some embodiments. FIG. 11c is a sectional view of a first housing according to some embodiments. As shown in FIG. 11a, FIG. 11b and FIG. 11c, in some embodiments, the first housing 510 can include a first side wall 511. The first side wall 511 is a side wall of the first housing 510 close to the fiber optic adapter 700. The first side wall 511 can have a first connecting hole 5111. The first connecting hole 5111 can traverse the first side wall 511, so that the first connecting hole 5111 can be in communication with the inner cavity of the first cavity, thereby allowing the optical signal to be transmitted in and out of the first cavity along the first connecting hole 5111.

[0214] As shown in FIG. 11a, FIG. 11b and FIG. 11c, in some embodiments, the first housing 510 can include a second side wall 512. One end of the second side wall 512 can be connected with one end of the first side wall 511. In some embodiments, the first housing 510 can include a third side wall 513. One end of the third side wall 513 can be connected with the other end of the second side wall 512. The third side wall 513 is a side wall of the first housing 510 close to the light emitting component 400. The third side wall 513 can be disposed opposite to the first side wall 511. The third side wall 513 can have a second connecting hole 5131. The second connecting hole 5131 can traverse the third side wall 513, so that the second connecting hole 5131 can be in communication with the inner cavity of the first cavity, thereby allowing the emitted optical signal emitted by the light emitting component 400 to be incident on the first cavity along the second connecting hole 5131.

[0215] As shown in FIG. 9b and FIG. 11b, in some embodiments, the third side wall 513 can have a first bearing surface 5132. The first bearing surface 5132 can be formed by the inner surface of the third side wall 513 being inwardly recessed. The first bearing surface 5132 can be towards the third connecting hole 5141.

[0216] As shown in FIG. 11b and FIG. 11c, in some embodiments, the third side wall 513 can have a second bearing surface 5133. The second bearing surface 5133 can be formed by the inner surface of the third side wall 513 being inwardly recessed. One end of the second bearing surface 5133 can be connected with the first bearing surface 5132. The second bearing surface 5133 can be towards the fourth connecting hole 5121 and the first connecting hole 5111. In some embodiments, the third side wall 513 can have a fifth bearing surface 5134. The fifth bearing surface 5134 can be formed by the inner surface of the third side wall 513 being inwardly recessed. The fifth bearing surface 5134 can be connected with the other end of the second bearing surface 5133. The fifth bearing surface 5134 can be disposed with the second connecting hole 5131 between the fifth bearing surface 5134 and the bottom plate of the first housing 510. The fifth bearing surface 5134 can be towards the first connecting hole 5111.

[0217] As shown in FIGS. 11a, 11b and 11c, in some embodiments, the first housing 510 can comprise a fourth side wall 514. One end of the fourth side wall 514 can be connected with one end of the third side wall 513. The other end of the fourth side wall 514 can be connected with the other end of the first side wall 511. The fourth side wall 514 can be disposed opposite to the second side wall 512.

[0218] As shown in FIG. 11a, in some embodiments, the fourth side wall 514 can have a third abutting surface 5143. The third abutting surface 5143 can be a partial area of the inner surface of the fourth side wall 514.

[0219] As shown in FIGS. 11a, 11b and 11c, the fourth side wall 514 can have a fourth abutting surface 5144. The fourth abutting surface 5144 can be a partial area of the inner surface of the fourth side wall 514. The fourth abutting surface 5144 can be connected with or not connected with the third abutting surface 5143. In some embodiments, the third abutting surface 5143 is disposed obliquely relative to the fourth abutting surface 5114, so that the third abutting surface 5413 can be directed towards the fifth connecting hole 5122.

[0220] As shown in FIGS. 9a, 11b and 11c, in some embodiments, the first housing 510 can comprise a bottom plate 5161. The bottom plate 5161 can be used to support the first light assembly 517a. The bottom plate 5161 can be connected with the first side wall 511. The bottom plate 5161 can be connected with the second side wall 512. The bottom plate 5161 can be connected with the third side wall 513. The bottom plate 5161 can be connected with the fourth side wall 514.

[0221] In some embodiments, the bottom plate of the first housing 510 can have a reserved hole 519. The reserved hole 519 can traverse the bottom plate 5161 of the first housing 510. The reserved hole 519 can be located below the second abutting surface 5133 and the fifth abutting surface 5134, so that the reserved hole 519 can be correspondingly disposed with the second abutting surface 5133 and the fifth abutting surface 5134, so as to facilitate the formation of the second abutting surface 5133 and the fifth abutting surface 5134.

[0222] The first side wall 511, the second side wall 512, the third side wall 513 and the fourth side wall 514 are sequentially connected and respectively connected with the bottom plate 5161, so as to form the first housing 510 having an opening. The opening of the first housing 510 can be directed towards the lower housing 202.

[0223] As shown in FIGS. 11a, 11b and 11c, in some embodiments, the inward recess of the first housing 510 can form a containing cavity 516. The containing cavity 516 can be an inner cavity of the first cavity, such that the containing cavity 516 can be in communication with the first connecting hole 5111, the second connecting hole 5131, the third connecting hole 5141, the fourth connecting hole 5121 and the fifth connecting hole 5122. The containing cavity 516 can contain other devices in the first light assembly 517a except the first filter 5177 and the second filter 5178. In some embodiments, the fourth connecting hole 5121 and the fifth connecting hole 5122 can be located in one of the second side wall 512 and the fourth side wall 514, and the third connecting hole 5141 can be located in the other of the second side wall 512 and the fourth side wall 514. For example, the fourth connecting hole 5121 and the fifth connecting hole 5122 can be located in the second side wall 512, and the third connecting hole 5141 can be located in the fourth side wall 514.

[0224] As shown in FIGS. 11a, 11b and 11c, the second side wall 512 can have the fourth connecting hole 5121. The fourth connecting hole 5121 can traverse the second side wall 512, such that the fourth connecting hole 5121 can be in communication with the inner cavity of the first cavity, and thus the light signal of the inner cavity of the first cavity can be incident to the light receiving assembly connected with the fourth connecting hole 5121. For example, the light signal of the inner cavity of the first cavity can be incident to the second light receiving assembly 520.

[0225] As shown in FIGS. 11a and 11c, in some embodiments, the fourth connecting hole 5121 can include a first sub-connecting hole 51211. In some embodiments, the fourth connecting hole 5121 can include a second sub-connecting hole 51212. One end of the second sub-connecting hole 51212 can be in communication with the inner cavity of the first housing 510. The other end of the second sub-connecting hole 51212 can be in communication with the first sub-connecting hole 51211. The size of the second sub-connecting hole 51212 is smaller than the size of the first sub-connecting hole 51211.

[0226] One end of the second sub-connecting hole 51212 can be in communication with the inner cavity of the first housing 510, and the other end of the second sub-connecting hole 51212 can be in communication with the first sub-connecting hole 51211, such that the fourth connecting hole 5121 can be in communication with the inner cavity of the first cavity.

[0227] As shown in FIG. 11a, FIG. 11b and FIG. 11c, the second side wall 512 can have a fifth connecting hole 5122. The fifth connecting hole 5122 can be closer to the first side wall 512 than the fourth connecting hole 5121. The fifth connecting hole 5122 can traverse the second side wall 512, so that the fifth connecting hole 5122 can be in communication with the inner cavity of the first cavity, and thus the optical signal of the inner cavity of the first cavity can be incident on the light receiving assembly connected with the fifth connecting hole 5122. For example, the optical signal of the inner cavity of the first cavity can be incident on the first light receiving assembly 530.

[0228] In some embodiments, the fourth connecting hole 5121 is closer to the second connecting hole 5131 than the fifth connecting hole 5122, so that the light receiving assembly placed in the fourth connecting hole 5121 is closer to the light emitting component 400 than the light receiving assembly placed in the fifth connecting hole 5122.

[0229] As shown in FIG. 11a and FIG. 11c, in some embodiments, the fifth connecting hole 5122 can include a third sub-connecting hole 51221. In some embodiments, the fifth connecting hole 5122 can include a fourth sub-connecting hole 51222. One end of the fourth sub-connecting hole 51222 can be in communication with the inner cavity of the first shell 510. The other end of the fourth sub-connecting hole 51222 can be in communication with the third sub-connecting hole 51221. The fourth sub-connecting hole 51222 has a smaller size than the third sub-connecting hole 51221.

[0230] One end of the fourth sub-connecting hole 51222 can be in communication with the inner cavity of the first shell 510, and the other end of the fourth sub-connecting hole 51222 can be in communication with the third sub-connecting hole 51221, so that the fifth connecting hole 5122 can be in communication with the inner cavity of the first cavity.

[0231] As shown in FIG. 11a, FIG. 11b and FIG. 11c, in some embodiments, the second side wall 512 can have a first step 5123. The first step 5123 can be located between the fourth connecting hole 5121 and the fifth connecting hole 5122. The first step 5123 can make the surface of the area where the fifth connecting hole 5122 is located different in height from the surface of the area where the fourth connecting hole 5121 is located, i.e., the depth of the fifth connecting hole 5122 is different from the depth of the fourth connecting hole 5121, and thus the light receiving assemblies placed in the fifth connecting hole 5122 and the fourth connecting hole 5121 are both located in the corresponding connecting holes, thereby improving the connection stability of the fifth connecting hole 5122 and the fourth connecting hole 5121 with their corresponding light receiving assemblies, respectively. For example, the second light receiving assembly 520 is arranged in the fourth connecting hole 5121, and the first light receiving assembly 530 is arranged in the fifth connecting hole 5122, and the first step 5123 makes the depth of the fifth connecting hole 5122 greater than the depth of the fourth connecting hole 5121.

[0232] As shown in FIG. 11a, FIG. 11b and FIG. 11c, the fourth side wall 514 can have a third connecting hole 5141. The third connecting hole 5141 can traverse the fourth side wall 514, so that the third connecting hole 5141 can be in communication with the inner cavity of the first cavity, and thus the optical signal of the inner cavity of the first cavity can be incident to the light receiving component connected with the third connecting hole 5141. For example, the optical signal of the inner cavity of the first cavity can be incident to the third light receiving component 540.

[0233] In some embodiments, the central axis of the fourth connecting hole 5121 is closer to the first connecting hole 5131 than the central axis of the third connecting hole 5141, so that the light receiving component placed in the fourth connecting hole 5121 is closer to the optical fiber adapter 700 than the light receiving component placed in the third connecting hole 5141.

[0234] As shown in FIG. 9a, FIG. 9b and FIG. 11c, in some embodiments, the fourth side wall 514 can have a second step 5142, so that the area of the fourth side wall 514 where the third connecting hole 5141 is located is recessed relative to other areas of the fourth side wall 514, and thus the third light receiving component 540 inserted into the third connecting hole 5141 can be provided with accommodation space, and the strength of the first housing 510 can be increased.

[0235] FIG. 12a is a light path diagram of a first light receiving component according to some embodiments. FIG. 12b is a sectional view of the first light receiving component according to some embodiments. As shown in FIG. 12a and FIG. 12b, in some embodiments, the first lens 5171 can be located outside the first connecting hole 5111, i.e. in the accommodation cavity 516, so as to facilitate active coupling of the first lens 5171. Since the space of the accommodation cavity 516 is larger than the space of the first connecting hole 5111, active coupling of the first lens 5171 is facilitated, and assembly difficulty is reduced.

[0236] In some embodiments, the first lens 5171 can be passively attached in the first connecting hole 5111, so as to reduce the volume of the first cavity.

[0237] As shown in FIGS. 12a and 12b, in some embodiments, the second light receiving assembly 520 can be located on the reflection light path of the first reflecting sheet 5173, the first reflecting sheet 5173 faces the fifth wave sheet 51726a and the second light receiving assembly 520, so that the first wavelength light signal transmitted by the fifth wave sheet 51726a is reflected by the first reflecting sheet 5173 to the second light receiving assembly 520. In some embodiments, the first light receiving assembly 530 can be located on the reflection light path of the second reflecting sheet 5176, the second reflecting sheet 5176 faces the third wave sheet 51724a and the first light receiving assembly 530, so that the three-wavelength light signal transmitted by the third wave sheet 51724a is reflected by the second reflecting sheet 5176 to the first light receiving assembly 530.

[0238] As shown in FIGS. 12a and 12b, in some embodiments, the third light receiving assembly 540 can be located on the reflection light path of the third reflecting sheet 5175, the third reflecting sheet 5175 faces the sixth wave sheet 51727a and the third light receiving assembly 540, so that the second wavelength light signal transmitted by the sixth wave sheet 51727a is reflected by the third reflecting sheet 5175 to the third light receiving assembly 540.

[0239] In some embodiments, the wavelength range of the first wavelength light signal received by the second light receiving assembly 520 is 1284-1288nm, the receiving rate of the second light receiving assembly 520 is greater than that of the first light receiving assembly 530 and the third light receiving assembly 540, resulting in that the receiving light sensitive surface of the second light receiving assembly 520 is smaller than that of the first light receiving assembly 530 and the third light receiving assembly 540, so that the transmission path of the first wavelength light signal received by the second light receiving assembly 520 is the shortest, and the light receiving chip of the second light receiving assembly 520 can receive the first wavelength light signal with high coupling efficiency.

[0240] In some embodiments, the wavelength range of the first wavelength light signal received by the second light receiving assembly 520 is 1284-1288nm, the wavelength range of the third wavelength light signal received by the first light receiving assembly 510 is 1260-1280nm, the wavelength range of the second wavelength light signal received by the third light receiving assembly 540 is 1290-1330nm, the receiving rate of the second light receiving assembly 520, the first light receiving assembly 530 and the third light receiving assembly 540 decreases in turn, and the receiving light sensitive surface of the second light receiving assembly 520, the first light receiving assembly 530 and the third light receiving assembly 540 increases in turn, so that the transmission path of the first wavelength light signal, the second wavelength light signal and the third wavelength light signal increases in turn, and the second light receiving assembly 520, the first light receiving assembly 530 and the third light receiving assembly 540 can all receive the corresponding wavelength receiving light signal with high efficiency.

[0241] As shown in FIG. 12a and FIG. 12b, in some embodiments, the second light receiving assembly 520 can be disposed in the fourth connecting hole 5121. The second light receiving assembly 520 can be disposed in the first sub-connecting hole 51211, and the second filter 5178 on the second light receiving assembly 520 can be disposed in the second sub-connecting hole 51212.

[0242] As shown in FIG. 12a and FIG. 12b, in some embodiments, the first light receiving assembly 530 can be disposed in the fifth connecting hole 5122. The first light receiving assembly 530 is disposed in the third sub-connecting hole 51221, and part of the bracket 550 on the first light receiving assembly 530 is disposed in the third sub-connecting hole 51221 and part of the bracket 550 is disposed in the fourth sub-connecting hole 51222. The first filter 5177 on the bracket 550 is disposed in the fourth sub-connecting hole 51222.

[0243] As shown in FIG. 12a and FIG. 12b, in some embodiments, the third light receiving assembly 540 can be disposed in the third connecting hole 5141.

[0244] As shown in FIG. 11b, FIG. 12a and FIG. 12b, the first reflecting sheet 5173 can be supported on the second supporting surface 5133, so that the first reflecting sheet 5173 can be directed towards the fifth wave sheet 51726a and the second light receiving assembly 520 in the fourth connecting hole 5121, thereby enabling the first reflecting sheet 5173 to reflect the first wavelength light signal to the second light receiving assembly 520.

[0245] As shown in FIG. 11b, FIG. 12a and FIG. 12b, the first reflecting sheet 5173 can be supported on the fifth supporting surface 5134. The first reflecting sheet 5173 is supported on the second supporting surface 5133 and the fifth supporting surface 5134 to increase the contact area of the first reflecting sheet 5173 with the first housing 510 and improve the connection stability of the first reflecting sheet 5173 with the first housing 510.

[0246] As shown in FIG. 11a, FIG. 12a and FIG. 12b, the second reflecting sheet 5176 can be supported on the third supporting surface 5143, so that the second reflecting sheet 5176 can be directed towards the fifth connecting hole 5122, and thereby the first light receiving assembly 530 in the fifth connecting hole 5122, thereby enabling the second reflecting sheet 5176 to reflect the third wavelength light signal to the first light receiving assembly 530.

[0247] As shown in FIG. 11c, FIG. 12a and FIG. 12b, one side wall of the wave splitting assembly 5172a can be supported on the fourth supporting surface 5144 to facilitate the adhesion of the wave splitting assembly 5172a to the first housing 510. The fourth supporting surface 5144 can be located on the inner surface of the fourth side wall 514 or on the inner surface of the second side wall 512.

[0248] As shown in FIG. 11b, FIG. 12a and FIG. 12b, the third reflective sheet 5175 can be supported by the first supporting surface 5132, so that the third reflective sheet 5175 can be directed towards the third connecting hole 5141, and then the third reflective sheet 5175 can be directed towards the third light receiving assembly 540 in the third connecting hole 5141, so that the third reflective sheet 5175 can reflect the second wavelength light signal to the third light receiving assembly 540.

[0249] In some embodiments, the third reflective sheet 5175 can include an incident surface, a reflective surface and an exit surface, the incident surface is located between the sixth wave sheet 51727a and the reflective surface, the exit surface is located between the third light receiving assembly 540 and the reflective surface, the reflective surface is arranged obliquely relative to the incident surface, the second wavelength light signal is incident to the third reflective sheet 5175 through the incident surface, and is reflected by the reflective surface of the third reflective sheet 5175 and then exits through the exit surface.

[0250] In some embodiments, one side of the reflective surface can be connected with one side of the incident surface through a connecting surface. In some embodiments, the other side of the reflective surface can be connected with one side of the exit surface. In some embodiments, the other side of the exit surface can be connected with the other side of the incident surface.

[0251] One side of the reflective surface can be connected with one side of the incident surface through a connecting surface, the other side of the reflective surface can be connected with one side of the exit surface, and the other side of the exit surface can be connected with the other side of the incident surface, which can reduce the width dimension of the third reflective sheet 5175, and also facilitate to increase the contact area between the third reflective sheet 5175 (the connecting surface of the third reflective sheet 5175) and the first supporting surface 5132, and then improve the connection stability of the third reflective sheet 5175 and the first shell 510.

[0252] As shown in FIG. 11b, FIG. 12a and FIG. 12b, the third filter sheet 5174 can be supported by the first supporting surface 5132.

[0253] In some embodiments, the third filter sheet 5174 can be located between the sixth wave sheet 51717 and the third reflective sheet 5175, so as to reduce the distance between the third reflective sheet 5175 and the third light receiving assembly 540, and then reduce the width dimension of the first shell 510.

[0254] In some embodiments, the third filter sheet 5174 is connected with the incident surface of the third reflective sheet 5175, so that the third filter sheet 5174 is connected with the third reflective sheet 5175, and then the length dimension of the first shell 510 is reduced.

[0255] As shown in FIG. 11c, FIG. 12a and FIG. 12b, in some embodiments, the center axis of the fourth connecting hole 5121 is closer to the center axis of the first connecting hole 5131 than the center axis of the third connecting hole 5141, which not only reduces the interference between the first reflective sheet 5173 and the third reflective sheet 5175, but also provides a space for the third filter sheet 5174, and can also reduce the width of the first housing 510.

[0256] As shown in FIG. 10 and FIG. 12a, the receiving light path is as follows: the received light signal is first collimated by the first lens 5171 and then enters the wave division component 5172a, the wave division component 5172a divides the received light signal into a first wavelength light signal, a second wavelength light signal and a third wavelength light signal, the first wavelength light signal is reflected by the first reflective sheet 5173 to the second filter sheet 5178, and then enters the second light receiving component 520 after being filtered by the second filter sheet 5178; the third wavelength light signal is reflected by the second reflective sheet 5176 to the first filter sheet 5177, and then enters the first light receiving component 530 after being filtered by the first filter sheet 5177; the second wavelength light signal is filtered by the third filter sheet 5174, and then enters the third reflective sheet 5175, and then enters the third light receiving component 540 after being reflected by the third reflective sheet 5175.

[0257] FIG. 12c is an assembly view of another light receiving component and an adapter plate according to some embodiments. FIG. 12d is an assembly view of another light receiving component, a fiber adapter and a circuit board according to some embodiments. FIG. 12e is an exploded view of another light receiving component according to some embodiments. As shown in FIG. 12c, FIG. 12d and FIG. 12e, in some embodiments, the light input end of the light receiving component 500 can be connected with the light output end of the light emitting component 400. The light input / output end of the light receiving component 500 can be connected with the fiber adapter 700.

[0258] As shown in FIG. 12d, the light emitting component 400 and the circuit board 300 can be connected through the flexible circuit board 300.

[0259] In some embodiments, the flexible circuit board 900 can include a first end. The first end can be connected with the surface of the circuit board 300.

[0260] In some embodiments, the flexible circuit board 900 can include a second end. The second end can be connected with the first electrical input end of the light emitting component 400. The second end can be connected with the first end. In some embodiments, the flexible circuit board 900 can include a third end. The third end can be connected with the second electrical input end of the light emitting component 400. The third end can be connected with the first end. There can be a gap between the third end and the second end, so that the second end and the third end of the flexible circuit board 900 are not connected.

[0261] As shown in FIGS. 12c, 12d and 12e, in some embodiments, the adapter board 310 can be disposed in the housing of the optical module. One end of the adapter board 310 can be inserted into the optical receiving component 500. The other end of the adapter board 310 can be connected with the circuit board 300. One end of the adapter board 310 can be inserted into the optical receiving component 500, and the other end of the adapter board 310 can be connected with the circuit board 300, so that the electrical signal transmission between the optical receiving component 500 and the circuit board 300 is realized through the adapter board 310.

[0262] In some embodiments, the other end of the adapter board 310 is stacked with the circuit board 300, and the electrical connection between the adapter board 310 and the circuit board 300 is realized through the connecting member.

[0263] As shown in FIGS. 12c, 12d and 12e, in some embodiments, the adapter board 310 and the optical receiving component 500 can enclose a first avoiding opening 320. The optical transmitting component 400 can be disposed at the first avoiding opening 320 of the adapter board 310 to provide a space for the optical transmitting component 400.

[0264] As shown in FIG. 12e, in some embodiments, the optical receiving component 500 can include a first cover plate 515.

[0265] As shown in FIG. 12e, in some embodiments, the optical receiving component 500 can include a first housing 510. The first cover plate 515 can be covered on the first housing 510 to form a first cavity. The receiving light assembly 507 can be disposed in the first cavity. The receiving light assembly 507 can transmit the transmitted light signal to the fiber adapter 700, or can split the received light signal transmitted by the fiber adapter 700 to the first cavity, and then the split received light signal is incident to the corresponding light receiving assembly.

[0266] FIG. 12f is an exploded view of another optical receiving component according to some embodiments. FIG. 12g is an exploded view of another first housing and another receiving light assembly according to some embodiments. As shown in FIGS. 12f and 12g, in some embodiments, at least one light receiving chip is disposed on the surface of the end of the adapter board 310 extending into the optical receiving component 500.

[0267] In some embodiments, the at least one light receiving chip can include a first light receiving chip 3132. In some embodiments, the at least one light receiving chip can include a second light receiving chip 3131. In some embodiments, the at least one light receiving chip can include a third light receiving chip 3121.

[0268] Any two of the first light receiving chip 3132, the second light receiving chip 3131 and the third light receiving chip 3121 can be located on one side of the adapter board 310, and the remaining one of the first light receiving chip 3132, the second light receiving chip 3131 and the third light receiving chip 3121 can be located on the other side of the adapter board 310, so as to reduce the length of the light receiving component 500.

[0269] As shown in FIGS. 12f and 12g, in some embodiments, the adapter board 310 can include a connecting portion 311. The connecting portion 311 can be stacked with the circuit board 300 and electrically connected through a connecting piece. In some embodiments, the adapter board 310 can include a first clamping portion 312. One end of the first clamping portion 312 is inserted into the first housing 510. The other end of the first clamping portion 312 can be connected with the connecting portion 311.

[0270] As shown in FIGS. 12f and 12g, in some embodiments, the adapter board 310 can include a second clamping portion 313. One end of the second clamping portion 313 is inserted into the first housing 510. The other end of the second clamping portion 313 can be connected with the connecting portion 311. The first clamping portion 312 can be disconnected with the second clamping portion 313, so that the first clamping portion 312, the connecting portion 311 and the second clamping portion 313 form the adapter board 310 with a second avoiding opening.

[0271] In some embodiments, the size of the first avoiding opening 320 is smaller than the size of the second avoiding opening.

[0272] In some embodiments, the third light receiving chip 3121 can be located on the surface of the first clamping portion 312, and the first light receiving chip 3132 and the second light receiving chip 3131 can be located on the surface of the second clamping portion 313.

[0273] As shown in FIGS. 12f and 12g, in some embodiments, the first housing 510 can include a first side wall 511. The first side wall 511 can be connected with the fiber adapter 700. The first side wall 511 can have a first connecting hole 5111.

[0274] As shown in FIGS. 12f and 12g, in some embodiments, the first housing 510 can include a third side wall 513. The third side wall 513 can be connected with the light emitting component 400. The third side wall 513 is arranged opposite to the first side wall 511. The third side wall 513 can have a second connecting hole 5131. The second connecting hole 5131 can be connected with the light emitting component 400, so that the emitted light signal emitted by the light emitting component 400 can be incident into the first cavity through the second connecting hole 5131.

[0275] In some embodiments, the third side wall 513 can have a first notch 5135. An opening of the first notch 5135 can be toward one side edge of the first housing 510. The first notch 5135 can be disposed corresponding to the first clamping portion 312. The first clamping portion 312 can be inserted into the first housing 510 through the first notch 5135.

[0276] In some embodiments, the first notch 5135 has a gap with a bottom of the third side wall 513, so that a height of the bottom of the first notch 5135 is flush with a height of a bottom of the adapter board 310, thereby facilitating the first clamping portion 312 to be inserted into the first housing 510 through the first notch 5135.

[0277] In some embodiments, a width dimension of the first notch 5135 can be greater than or equal to a thickness dimension of the first clamping portion 312, so as to facilitate the first clamping portion 312 to be inserted into the first housing 510 through the first notch 5135. For example, the width dimension of the first notch 5135 is equal to the thickness dimension of the first clamping portion 312, so as to improve a sealing property of the third side wall 513.

[0278] In some embodiments, a length dimension of the first notch 5135 can be greater than or equal to a width dimension of the first clamping portion 312. For example, the length dimension of the first notch 5135 is equal to the width dimension of the first clamping portion 312.

[0279] In some embodiments, the third side wall 513 can have a second notch 5136. An opening of the second notch 5136 can be toward another side edge of the first housing 510. The second notch 5136 can be disposed corresponding to the second clamping portion 313. The second clamping portion 313 can be inserted into the first housing 510 through the second notch 5136.

[0280] In some embodiments, the second notch 5136 has a gap with a bottom of the third side wall 513, so that a height of the bottom of the second notch 5136 is flush with a height of a bottom of the adapter board 310, thereby facilitating the second clamping portion 313 to be inserted into the first housing 510 through the second notch 5136.

[0281] In some embodiments, a width dimension of the second notch 5136 can be greater than or equal to a thickness dimension of the second clamping portion 313, so as to facilitate the second clamping portion 313 to be inserted into the first housing 510 through the second notch 5136. For example, the width dimension of the second notch 5136 is equal to the thickness dimension of the second clamping portion 313, so as to improve a sealing property of the third side wall 513.

[0282] In some embodiments, a length dimension of the second notch 5136 can be greater than or equal to a width dimension of the second clamping portion 313. For example, the length dimension of the second notch 5136 is equal to the width dimension of the second clamping portion 313.

[0283] In some embodiments, the first notch 5135 and the second notch 5136 can be located on both sides of the second connecting hole 5131 to improve the connection stability of the adapter board 310 and the first housing 510.

[0284] As shown in FIGS. 12f and 12g, in some embodiments, the first housing 510 can include a bottom plate 5161. The receiving light assembly 507 can be disposed on the bottom plate 5161 to support the receiving light assembly 507.

[0285] The first housing 510 only includes the first side wall 511, the third side wall 513, and the bottom plate 5161. Therefore, as shown in FIG. 12e, the first cover plate 515 covering the first housing 510 can include a first connecting portion 5151. The first connecting portion 5151 can be disposed opposite to the bottom plate 5161.

[0286] In some embodiments, the first cover plate 515 can include a second connecting portion 5152. One side of the second connecting portion 5152 can be connected to the first connecting portion 5151. The other side of the second connecting portion 5152 can be connected to a side wall of the bottom plate 5161 close to the first clamping portion 312.

[0287] In some embodiments, the first cover plate 515 can include a third connecting portion 5153. The third connecting portion 5153 is disposed opposite to the second connecting portion 5152. One side of the third connecting portion 5153 can be connected to the first connecting portion 5151. The other side of the third connecting portion 5153 can be connected to a side wall of the bottom plate 5161 close to the second clamping portion 313.

[0288] As shown in FIGS. 12e, 12f, and 12g, in some embodiments, the receiving light assembly 507 can include a first lens 5171, a wave division assembly 5172, a first reflecting sheet 5173, a second reflecting sheet 5176, a third reflecting sheet 5175, and a third filter sheet 5174. The functions and mutual positional relationships of the above-mentioned devices have been described in the foregoing, and will not be described here again.

[0289] As shown in FIGS. 12e, 12f, and 12g, in some embodiments, the receiving light assembly 507 can include a second lens 5179.

[0290] As shown in FIGS. 12e, 12f, and 12g, in some embodiments, the receiving light assembly 507 can include a second lens 5181.

[0291] As shown in FIGS. 12e, 12f, and 12g, in some embodiments, the receiving light assembly 507 can include a second lens 5183.

[0292] As shown in FIGS. 12e, 12f and 12g, in some embodiments, the receiving light assembly 507 can include a turning prism 5180. The turning prism 5180 can reflect the light signal converged by the second lens 5179 to the corresponding light receiving chip. For example, the turning prism 5180 can reflect the light signal converged by the second lens 5179 to the first light receiving chip 3132.

[0293] As shown in FIGS. 12e, 12f and 12g, in some embodiments, the receiving light assembly 507 can include a turning prism 5182. The turning prism 5182 can reflect the light signal converged by the second lens 5181 to the corresponding light receiving chip. For example, the turning prism 5182 can reflect the light signal converged by the second lens 5181 to the second light receiving chip 3131.

[0294] As shown in FIGS. 12e, 12f and 12g, in some embodiments, the receiving light assembly 507 can include a turning prism 5184. The turning prism 5184 can reflect the light signal converged by the second lens 5183 to the corresponding light receiving chip. For example, the turning prism 5184 can reflect the light signal converged by the second lens 5183 to the third light receiving chip 3121.

[0295] The turning prism 5180, the turning prism 5182 and the turning prism 5184 each have a reflecting surface which is obliquely arranged above the corresponding light receiving chip, so that the light signal is reflected to the corresponding light receiving chip by the reflecting surface.

[0296] As shown in FIGS. 12e, 12f and 12g, in some embodiments, the bottom plate 5161 can include a first support portion 51611. The first support portion 51611 can support the first lens 5171, the wave splitting assembly 5172, the first reflecting sheet 5173, the second reflecting sheet 5176, the third reflecting sheet 5175, the third filter sheet 5174, the second lens 5179, the turning prism 5180, the second lens 5181, the turning prism 5182, the second lens 5183 and the turning prism 5184.

[0297] In some embodiments, the bottom plate 5161 can include a second support portion 51612. The second support portion 51612 can be located at one side of the first support portion 51611. The second support portion 51612 can support the first clamping portion 312. The height of the second support portion 51612 is lower than the height of the first support portion 51611, so that the height of the light receiving chip on the first clamping portion 312 is lower than the height of the turning prism 5184.

[0298] In some embodiments, the bottom plate 5161 can include a third support portion 51613. The third support portion 51613 can be located on the other side of the first support portion 51611. The third support portion 51613 can support the second clamping portion 313. The height of the third support portion 51613 is lower than the height of the first support portion 51611, so that the height of the light receiving chip on the second clamping portion 313 is lower than the height of the turning prism.

[0299] In some embodiments, one end of the turning prism 5180 is fixed to the first support portion 51611, and the other end is suspended on the third support portion 51613, so that the light signal reflected by the turning prism 5180 can be incident on the corresponding light receiving chip placed on the third support portion 51613.

[0300] In some embodiments, one end of the turning prism 5182 is fixed to the first support portion 51611, and the other end is suspended on the third support portion 51613, so that the light signal reflected by the turning prism 5182 can be incident on the corresponding light receiving chip placed on the third support portion 51613.

[0301] In some embodiments, one end of the turning prism 5184 is fixed to the first support portion 51611, and the other end is suspended on the second support portion 51612, so that the light signal reflected by the turning prism 5184 can be incident on the corresponding light receiving chip placed on the second support portion 51612.

[0302] As shown in FIGS. 12e, 12f and 12g, in some embodiments, the first support portion 51611 can be provided with a first abutting plate 51614. The first abutting plate 51614 can be arranged along the length direction of the first housing 510. The first substrate of the wave splitting assembly 5172 abuts the side surface of the first abutting plate 51614.

[0303] As shown in FIGS. 12e, 12f and 12g, in some embodiments, the first support portion 51611 can be provided with a second abutting plate 51615. The inner surface of the second abutting plate 51615 is an abutting surface, which faces the second lens 5179. The second reflecting sheet 5176 abuts the abutting surface of the second abutting plate 51615.

[0304] As shown in FIGS. 12e, 12f and 12g, the first abutting surface 5132 can be arranged on the first support portion 51611.

[0305] As shown in FIGS. 12e, 12f and 12g, the second abutting surface and the fifth abutting surface for abutting the first reflecting sheet 5173 are also located on the first support portion 51611.

[0306] The above is the description of different parts of two different light receiving components. The same parts have been described in the introduction of one light receiving component, and will not be repeated here.

[0307] FIG. 13a is a partial optical path diagram of a second light receiving component, according to some embodiments. As shown in FIG. 13a, in some embodiments, the light receiving component 500 can include a first light receiving assembly 530, a second light receiving assembly 520, a third light receiving assembly 540, and a first light assembly 517b, which can include a wave splitting assembly 5172b that can transmit the emitted light signal. The wave splitting assembly 5172b can also split the received light signal into a first wavelength light signal, a second wavelength light signal, and a third wavelength light signal, and emit them, which are incident on the corresponding light receiving assemblies, respectively. For example, the first wavelength light signal is incident on the second light receiving assembly 520, the second wavelength light signal is incident on the third light receiving assembly 540, and the third wavelength light signal is incident on the first light receiving assembly 530.

[0308] The wave splitting assembly 5172b can include a first substrate 51721, a first wave plate 51722, a second wave plate 51723b, a third wave plate 51724b, a fourth wave plate 51725, a fifth wave plate 51726a, and a sixth wave plate 51727a. The first end of the first substrate 51721 can be connected to the first wave plate 51722, the second wave plate 51723b, and the third wave plate 51724b in sequence, and the second end of the first substrate 51721 can be connected to the fourth wave plate 51725, the fifth wave plate 51726a, and the sixth wave plate 51727a in sequence. The fifth wave plate 51726a serves as a second light exit of the second end of the wave splitting assembly 5172b, and the sixth wave plate 51727a serves as a third light exit of the second end of the wave splitting assembly 5172b.

[0309] In some embodiments, the second wave plate 51723b can be a low-pass wave plate that can allow low-frequency signals to pass through and block high-frequency signals. For example, the second wave plate 51723b can allow the third wavelength light signal to be transmitted and can also allow the first wavelength light signal and the second wavelength light signal to be reflected.

[0310] The second wave plate 51723b can serve as a first light exit of the first end of the wave splitting assembly 5172b, so that the third wavelength light signal can be transmitted through the second wave plate 51723b.

[0311] In some embodiments, the third wave plate 51724b can allow the received light signal to be reflected. For example, the third wave plate 51724b can allow the second wavelength light signal to be reflected.

[0312] The first light assembly 517b can include a first reflecting sheet 5173, a second reflecting sheet 5176, a third reflecting sheet 5175, a first filter sheet 5177, a second filter sheet 5178, and a third filter sheet 5174. The first reflecting sheet 5173 can be located on the output light path of the fifth wave sheet 51726a to reflect the first wavelength light signal transmitted through the fifth wave sheet 51726a. The second reflecting sheet 5176 can be located on the output light path of the second wave sheet 51723b to reflect the third wavelength light signal transmitted through the second wave sheet 51723b. The third reflecting sheet 5175 can be located on the output light path of the sixth wave sheet 51727a to reflect the second wavelength light signal transmitted through the sixth wave sheet 51727a. The first filter sheet 5177 can be located on the reflected light path of the second reflecting sheet 5176. The second filter sheet 5178 can be located on the reflected light path of the first reflecting sheet 5173. The third filter sheet 5174 can be located on the output light path of the sixth wave sheet 51727a.

[0313] As shown in FIG. 13a, the receiving light path is as follows: the received light signal is first collimated by the first lens 5171, then transmitted through the first wave sheet 51722, and finally reflected by the fourth wave sheet 51725 and then incident on the second wave sheet 51723b. The third wavelength light signal in the received light signal is first transmitted through the second wave sheet 51723b, then reflected by the second reflecting sheet 5176, and finally filtered by the first filter sheet 5177 and then incident on the first light receiving assembly 530. The first wavelength light signal in the received light signal is first reflected by the second wave sheet 51723b, then transmitted through the fifth wave sheet 51726, then reflected by the first reflecting sheet 5173, and finally filtered by the second filter sheet 5178 and then incident on the second light receiving assembly 520. The second wavelength light signal in the received light signal is first transmitted through the second wave sheet 51723b, the fifth wave sheet 51726, and the third wave sheet 51724b in sequence, then transmitted through the sixth wave sheet 51727, then filtered by the third filter sheet 5174, and finally reflected by the third reflecting sheet 5175 and then incident on the third light receiving assembly 540.

[0314] The rest of the parts are the same as the first light receiving assembly except for the parts described above which are different from the first light receiving assembly, and thus will not be described here.

[0315] FIG. 13b is a partial optical path diagram of a third light receiving component according to some embodiments. As shown in FIG. 13b, in some embodiments, the light receiving component 500 can include a first light receiving assembly 530, a second light receiving assembly 520, a third light receiving assembly 540, and a first light assembly 517c, which can include a wave splitting assembly 5172c that can transmit the emitted light signal. The wave splitting assembly 5172c can also split the received light signal into a first wavelength light signal, a second wavelength light signal, and a third wavelength light signal, and emit them, which can be incident on the corresponding light receiving assemblies, respectively. For example, the first wavelength light signal can be incident on the second light receiving assembly 520, the second wavelength light signal can be incident on the third light receiving assembly 540, and the third wavelength light signal can be incident on the first light receiving assembly 530.

[0316] As shown in FIG. 13b, the first light receiving assembly 530 and the second light receiving assembly 520 can be located on one side of the light receiving component 500, and the third light receiving assembly 540 can be located on the other side of the light receiving component 500. The first light receiving assembly 530 and the second light receiving assembly 520 can be located at different ends of the wave splitting assembly 5172c, and the third light receiving assembly 540 and the first light receiving assembly 530 can be located at the same end of the wave splitting assembly 5172c, and the second light receiving assembly 520 can be closer to the light emitting component than the first light receiving assembly 530.

[0317] The wave splitting assembly 5172c can include a first substrate 51721, a first wave plate 51722, a second wave plate 51723b, a third wave plate 51724b, a fourth wave plate 51725, a fifth wave plate 51726b, a sixth wave plate 51727b, and a seventh wave plate 51728. The first end of the first substrate 51721d can be connected to the first wave plate 51722, the second wave plate 51723b, the third wave plate 51724b, and the seventh wave plate 51728 in sequence, the third wave plate 51724b can be located between the second wave plate 51723b and the seventh wave plate 51728, and the second end of the first substrate 51721d can be connected to the fourth wave plate 51725, the fifth wave plate 51726b, and the sixth wave plate 51727b in sequence.

[0318] In some embodiments, the second wave plate 51723b can be a low-pass wave plate that can allow low-frequency signals to pass through and block high-frequency signals. For example, the second wave plate 51723b can allow the third wavelength light signal to be transmitted and can also allow the first wavelength light signal and the second wavelength light signal to be reflected.

[0319] The second wave plate 51723b can serve as the first light exit of the wave splitting assembly 5172c, so that the third wavelength light signal can be transmitted through the second wave plate 51723b.

[0320] In some embodiments, the third waveplate 51724b can allow the received light signal to be reflected. For example, the third waveplate 51724b can allow the second wavelength light signal to be reflected.

[0321] In some embodiments, the fifth waveplate 51726b can allow the received light signal to be reflected. For example, the fifth waveplate 51726b can allow the first wavelength light signal and the second wavelength light signal to be reflected.

[0322] In some embodiments, the sixth waveplate 51727b can be a bandpass waveplate, which can allow signals within a certain frequency range to pass through and block signals of other frequencies. For example, the sixth waveplate 51727b can allow the first wavelength light signal to be transmitted and can allow the second wavelength light signal and the third wavelength light signal to be reflected.

[0323] The sixth waveplate 51727b can be a second light exit of the second end of the wave splitting component 5172c, such that the first wavelength light signal can be transmitted out of the sixth waveplate 51727b.

[0324] The seventh waveplate 51728 can be located on the reflected light path of the sixth waveplate 51727b, such that the seventh waveplate 51728 can receive the received light signal reflected by the sixth waveplate 51727b.

[0325] In some embodiments, the seventh waveplate 51728 can be a high-pass waveplate, which can allow high-frequency signals to pass through and block low-frequency signals. For example, the seventh waveplate 51728 can allow the second wavelength light signal to be transmitted and can allow the first wavelength light signal and the third wavelength light signal to be reflected.

[0326] The seventh waveplate 51728 can be a third light exit of the first end of the wave splitting component 5172c, such that the second wavelength light signal can be transmitted out of the seventh waveplate 51728.

[0327] The first light assembly 517b can include a first reflecting sheet 5173, a second reflecting sheet 5176, a third reflecting sheet 5175, a first filtering sheet 5177, a second filtering sheet 5178, and a third filtering sheet 5174. The first reflecting sheet 5173 can be located on the output light path of the sixth wave sheet 51727b to reflect the first wavelength light signal transmitted through the sixth wave sheet 51727b. The second reflecting sheet 5176 can be located on the output light path of the second wave sheet 51723b to reflect the third wavelength light signal transmitted through the second wave sheet 51723b. The third reflecting sheet 5175 can be located on the output light path of the seventh wave sheet 51728 to reflect the second wavelength light signal transmitted through the seventh wave sheet 51728. The first filtering sheet 5177 can be located on the reflected light path of the second reflecting sheet 5176. The second filtering sheet 5178 can be located on the reflected light path of the first reflecting sheet 5173. The third filtering sheet 5174 can be located on the output light path of the seventh wave sheet 51728. The third filtering sheet 5174 can be located between the seventh wave sheet 51728 and the third reflecting sheet 5175.

[0328] As shown in FIG. 13b, the receiving light path is as follows: the received light signal is first collimated by the first lens 5171, then transmitted through the first wave sheet 51722, and finally reflected by the fourth wave sheet 51725 before being incident on the second wave sheet 51723b. The third wavelength light signal in the received light signal is first transmitted through the second wave sheet 51723b, then reflected by the second reflecting sheet 5176, and finally filtered by the first filtering sheet 5177 before being incident on the first light receiving assembly 530. The first wavelength light signal in the received light signal is first reflected by the second wave sheet 51723b, then sequentially reflected by the fifth wave sheet 51726b and the fourth wave sheet 51724b, then transmitted through the sixth wave sheet 51727b, then reflected by the first reflecting sheet 5173, and finally filtered by the second filtering sheet 5178 before being incident on the second light receiving assembly 520. The second wavelength light signal in the received light signal is first sequentially reflected by the second wave sheet 51723b, the fifth wave sheet 51726b, the third wave sheet 51724b, and the sixth wave sheet 51727, then transmitted through the seventh wave sheet 51728, then filtered by the third filtering sheet 5174, and finally reflected by the third reflecting sheet 5175 before being incident on the third light receiving assembly 540.

[0329] Except that the above-mentioned parts are different from the first light receiving assembly, the rest are the same as the first light receiving assembly, which will not be repeated here.

[0330] The first light receiving assembly 530, the second light receiving assembly 520, and the third light receiving assembly 540 in the above several light receiving assemblies can be vertically arranged relative to the optical axis of the transmitted light signal.

[0331] FIG. 13c is a partial optical path diagram of a fourth light receiving component according to some embodiments. FIG. 13d is a partial optical path diagram of a fifth light receiving component according to some embodiments. As shown in FIG. 13c and FIG. 13d, in some embodiments, the light receiving component 500 can include a first light receiving assembly 530, a second light receiving assembly 520, a third light receiving assembly 540, and a first light assembly, which can transmit the emitted light signal to the fiber adapter 700. The first light assembly can also divide the received light signal into a first wavelength light signal, a second wavelength light signal, and a third wavelength light signal, which are incident to the corresponding light receiving assemblies, respectively. For example, the first wavelength light signal is incident to the second light receiving assembly 520, the second wavelength light signal is incident to the third light receiving assembly 540, and the third wavelength light signal is incident to the first light receiving assembly 530.

[0332] As shown in FIG. 13c, the first light receiving assembly is a first light assembly 517e. As shown in FIG. 13d, the first light receiving assembly is a first light assembly 517f.

[0333] As shown in FIG. 13c and FIG. 13d, the third light receiving assembly 540 can be disposed obliquely relative to the optical axis of the emitted light signal, and the first light receiving assembly 530 can be disposed perpendicularly relative to the optical axis of the emitted light signal.

[0334] In some embodiments, the second light receiving assembly 520 can be disposed perpendicularly relative to the optical axis of the emitted light signal.

[0335] In some embodiments, the second light receiving assembly 520 can be disposed obliquely relative to the optical axis of the emitted light signal to receive the first wavelength light signal as much as possible and improve the coupling efficiency of the second light receiving assembly 520.

[0336] As shown in FIG. 13c and FIG. 13d, in some embodiments, the first light assembly 517e and the first light assembly 517f can each include a light filtering assembly 5185. The light filtering assembly 5185 can be located in the light emission direction of the light emitting component 400, so that the emitted light signal emitted by the light emitting component 400 is transmitted to the fiber adapter 700 after being transmitted, and can also receive the received light signal transmitted by the fiber adapter 700. The light filtering assembly 5185 is used to separate the third wavelength light signal from the received light signal.

[0337] In some embodiments, the first light assembly 517e and the first light assembly 517f can each include a first filter 5184. The first filter 5184 can be located on a first light exit path of the light filtering assembly 5185 to receive the third wavelength light signal separated by the light filtering assembly 5185. The first filter 5184 can allow the third wavelength light signal to be reflected. The first light receiving assembly 530 can be located on a reflection path of the first filter 5184 so that the first light receiving assembly 530 can receive the third wavelength light signal reflected by the first filter 5184.

[0338] The light filtering assembly 5185 and the first filter 5184 cooperate with each other so that the third wavelength light signal can be normally incident into the first light receiving assembly 530.

[0339] In some embodiments, the first light assembly 517e and the first light assembly 517f can each include a second filter 5186. The second filter 5186 can be located on a second light exit path of the light filtering assembly 5185 to receive the first wavelength light signal and the second wavelength light signal separated by the light filtering assembly 5185. The second filter 5186 can allow the first wavelength light signal and the second wavelength light signal to be reflected.

[0340] The second filter 5186 can be located on an emission direction of the light emitting component 400 so that the second filter 5186 can receive the emission light signal emitted by the light emitting component 400.

[0341] The second filter 5186 can allow the emission light signal to be transmitted. The second filter 5186 can be located between the light emitting component 400 and the light filtering assembly 5185 so that the emission light signal is transmitted through the second filter 5186 and then transmitted through the light filtering assembly 5185 to the fiber optic adapter 700.

[0342] The light filtering assembly 5185 and the second filter 5186 cooperate with each other so that the first wavelength light signal and the second wavelength light signal can be obliquely incident to the third filter 5187, and the emission light signal can be transmitted to the fiber optic adapter. The second filter 5186 and the light filtering assembly 5185 are sequentially away from the light emitting component so that the emission light signal emitted by the light emitting component 400 is sequentially transmitted through the second filter 5186 and the light filtering assembly 5185 to the fiber optic adapter 700.

[0343] In some embodiments, the first light assembly 517e and the first light assembly 517f can each include a third filter 5187. The third filter 5187 can be located on a reflection path of the second filter 5186 so that the third filter 5187 can receive the first wavelength light signal and the second wavelength light signal reflected by the second filter 5186.

[0344] The third filter 5187 can allow the first wavelength light signal to be transmitted and can also allow the second wavelength light signal to be reflected. The second light receiving component 520 can be located on the transmission light path of the third filter 5187, so that the second light receiving component 520 can receive the first wavelength light signal transmitted by the third filter 5187. The third light receiving component 540 can be located on the reflection light path of the third filter 5187, so that the third light receiving component 540 can receive the second wavelength light signal reflected by the third filter 5187.

[0345] The light filtering component 5185, the second filter 5186, and the second light receiving component 520 cooperate with each other, so that the first wavelength light signal can be vertically incident on the second light receiving component 520.

[0346] The light filtering component 5185, the second filter 5186, the third filter 5187, and the third light receiving component 540 cooperate with each other, so that the second wavelength light signal can be vertically incident on the third light receiving component 540.

[0347] The distance between the central axis of the light emitting port of the light emitting component and the central axis of the fiber adapter along the width direction of the light receiving component is less than a preset value. This preset value can be compensated by the combination of several filters, so that the emitted light signal emitted by the light emitting component is incident on the fiber adapter. Therefore, as shown in FIG. 13c, in some embodiments, the distance between the central axis of the light emitting port of the light emitting component and the central axis of the fiber adapter along the width direction of the light receiving component is less than a preset value, and the light filtering component 5185 can be a filter. The filter can allow the first wavelength light signal and the second wavelength light signal to be transmitted, and can also allow the third wavelength light signal to be reflected.

[0348] As shown in FIG. 13c, the light filtering component 5185 is a filter, and the first light emitting light path of the light filtering component 5185 is the reflection light path of the filter. Therefore, the first filter 5184 can be located on the reflection light path of the filter, so that the first filter 5184 can receive the third wavelength light signal reflected by the filter.

[0349] As shown in FIG. 13c, the light filtering component 5185 is a filter, and the second light emitting light path of the light filtering component 5185 is the transmission light path of the filter. Therefore, the second filter 5186 can be located on the transmission light path of the filter, so that the second filter 5186 can receive the first wavelength light signal and the second wavelength light signal transmitted by the filter.

[0350] As shown in FIG. 13c, the emitting light path is as follows: the emitted light signal is transmitted by the second filter 5186 and the light filtering component 5185 in turn, and then coupled to the fiber adapter 700 through the first lens 5171.

[0351] The receiving light path is as follows: the received light signal is collimated by the first lens 5171 and then incident on the light filtering assembly 5185. The third wavelength light signal in the received light signal is first reflected by the light filtering assembly 5185, then reflected by the first light filter 5184 to the first light receiving assembly 530. The first wavelength light signal in the received light signal is first transmitted by the light filtering assembly 5185, then reflected by the second light filter 5186, and finally transmitted by the third light filter 5187 to the second light receiving assembly 520. The second wavelength light signal in the received light signal is transmitted by the light filtering assembly 5185, then reflected by the second light filter 5186, and finally reflected by the third light filter 5187 to the third light receiving assembly 540.

[0352] The distance between the central axis of the light emitting port of the light emitting component and the central axis of the fiber adapter along the width direction of the light receiving component is greater than a preset value, which cannot be compensated for by the combination of the light filters alone, so that the emitted light signal emitted by the light emitting component cannot be incident on the fiber adapter. Therefore, as shown in FIG. 13d, in some embodiments, the first light assembly 517f can include a light filtering assembly 5185. The light filtering assembly 5185 can be a combination of a second substrate and a plurality of wave plates, so that the light filtering assembly 5185 can transmit the emitted light signal emitted by the light emitting component to the fiber adapter.

[0353] In some embodiments, the light filtering assembly 5185 can be arranged along the length direction of the light receiving component 500. The light filtering assembly 5185 can transmit the emitted light signal emitted by the light emitting component to the fiber adapter.

[0354] The first light-in and light-out position of the light filtering assembly 5185 can be directed towards the light emitting component to receive the emitted light signal emitted by the light emitting component 400. The second light-in and light-out position of the light filtering assembly 5185 can be directed towards the fiber adapter to receive the received light signal transmitted by the fiber adapter 700. The first light-in and light-out position of the light filtering assembly 5185 and the second light-in and light-out position of the light filtering assembly 5185 are arranged offset along the width direction of the light receiving component 500, so that the light filtering assembly 5185 can transmit the emitted light signal emitted by the light emitting component 400 to the fiber adapter 700.

[0355] The first reflecting part of the light filtering assembly 5185 can be disposed opposite to the first light-in and light-out of the light filtering assembly 5185, so that the emitted light signal can be reflected by the first reflecting part of the light filtering assembly 5185. The second reflecting part of the light filtering assembly 5185 can be on the reflected light path of the first reflecting part of the light filtering assembly 5185, so that the emitted light signal reflected by the first reflecting part of the light filtering assembly 5185 can be reflected by the second reflecting part of the light filtering assembly 5185. The second light-in and light-out of the light filtering assembly 5185 can be on the reflected light path of the second reflecting part of the light filtering assembly 5185, so that the second light-in and light-out of the light filtering assembly 5185 can emit the emitted light signal reflected by the second reflecting part of the light filtering assembly 5185.

[0356] Similarly, the received light signal is received by the second light-in and light-out of the light filtering assembly 5185, and is sequentially reflected by the second reflecting part of the light filtering assembly 5185 and the first reflecting part of the light filtering assembly 5185, and then is emitted by the first light-in and light-out of the light filtering assembly 5185.

[0357] In some embodiments, the light filtering assembly 5185 can include a second substrate 51851, and the second substrate 51851 can be disposed along the length direction of the first housing 510. The first end of the second substrate 51851 can include a first end surface 51851a and a second end surface 51851b, and the first end surface 51851a and the second end surface 51851b are connected. The second end surface 51851b can be located in the light emission direction of the fiber optic adapter 700. The second end of the second substrate 51851 can include a third end surface 51851c and a fourth end surface 51851d, and the third end surface 51851c and the fourth end surface 51851d are connected. The third end surface 51851c can be located in the light emission direction of the light emitting component 400. The first end surface 51851a and the third end surface 51851c can be disposed opposite to each other, and the second end surface 51851b and the fourth end surface 51851d can be disposed opposite to each other.

[0358] In some embodiments, the light filtering assembly 5185 can include an eighth wave plate 51852. The eighth wave plate 51852 can be connected with the first end surface 51851a of the second substrate 51851. The eighth wave plate 51852 can serve as the first reflecting part of the light filtering assembly 5185. The eighth wave plate 51852 can allow the emitted light signal to be reflected, can allow the third wavelength light signal of the received light signal to be transmitted, and can allow the first wavelength light signal and the second wavelength light signal of the received light signal to be reflected.

[0359] In some embodiments, the light filtering assembly 5185 can include a ninth wave plate 51853. The ninth wave plate 51853 can be towards the fiber adapter 700. The ninth wave plate 51853 can be located on the exit light path of the fiber adapter 700. The ninth wave plate 51853 can be connected with the second end surface 51851b of the second substrate 51851, so that the ninth wave plate 51853 can serve as the second light entrance and exit of the light filtering assembly 5185. The ninth wave plate 51853 can allow the transmission of the emitted light signal and can also allow the transmission of the received light signal. The ninth wave plate 51853 is arranged perpendicularly relative to the central axis of the light exit port of the light emitting component 400, so that the emitted light signal is emitted perpendicularly through the ninth wave plate 51853, and the received light signal can also be perpendicularly incident on the ninth wave plate 51853.

[0360] In some embodiments, the light filtering assembly 5185 can include a tenth wave plate 51854. The tenth wave plate 51854 can be towards the light emitting component 400. The tenth wave plate 51854 can be located on the exit light path of the light emitting component 400. The tenth wave plate 51854 can be connected with the third end surface 51851c of the second substrate 51851, so that the tenth wave plate 51854 can serve as the first light entrance and exit of the light filtering assembly 5185. The tenth wave plate 51854 can allow the transmission of the emitted light signal, and can also allow the transmission of the first wavelength light signal and the second wavelength light signal of the received light signal.

[0361] The tenth wave plate 51854 is arranged perpendicularly relative to the central axis of the light exit port of the light emitting component 400, so that the emitted signal is perpendicularly incident on the tenth wave plate 51854, and the received light signal can also be perpendicularly emitted through the tenth wave plate 51854.

[0362] In some embodiments, the light filtering assembly 5185 can include an eleventh wave plate 51855. The eleventh wave plate 51855 can be connected with the fourth end surface 51851d of the second substrate 51851. The eleventh wave plate 51855 can serve as the second reflection part of the light filtering assembly 5185. The eleventh wave plate 51855 can be located on the reflection light path of the eighth wave plate 51852, so that the eleventh wave plate 51855 can receive the emitted light signal reflected by the eighth wave plate 51852. The eleventh wave plate 51855 can allow the reflection of the emitted light signal, and can also allow the transmission of the third wavelength light signal of the received light signal, and can also allow the reflection of the first wavelength light signal and the second wavelength light signal of the received light signal.

[0363] The eighth wave plate 51852 and the eleventh wave plate 51855 are both arranged obliquely relative to the central axis of the light exit port of the light emitting component 400, so that the emitted light signal and part of the received light signal can be reflected by the eighth wave plate 51852 and the eleventh wave plate 51855.

[0364] The transmission light path of the eighth wave plate 51852 or the transmission light path of the eleventh wave plate 51855 can be the first light-out light path of the light filtering assembly 5185, so that the third wavelength light signal can be transmitted out through the eighth wave plate 51852 or the eleventh wave plate 51855.

[0365] As shown in FIG. 13d, the light filtering assembly 5185 is a combination of a second substrate and a plurality of wave plates, and the first light-out light path of the light filtering assembly 5185 can be the transmission light path of the eighth wave plate 51825. Therefore, the first filter 5184 can be located on the transmission light path of the eighth wave plate 51825 of the light filtering assembly 5185, so that the first filter 5184 can receive the third wavelength light signal transmitted by the eighth wave plate 51825 of the light filtering assembly 5185.

[0366] As shown in FIG. 13d, the light filtering assembly 5185 is a combination of a second substrate and a plurality of wave plates, and the first light-out light path of the light filtering assembly 5185 can be the transmission light path of the eleventh wave plate 51855. Therefore, the first filter 5184 can be located on the transmission light path of the eleventh wave plate 51855 of the light filtering assembly 5185, so that the first filter 5184 can receive the third wavelength light signal transmitted by the eleventh wave plate 51855 of the light filtering assembly 5185.

[0367] The eleventh wave plate 51855 is closer to the light emitting component 400 than the eighth wave plate 51825, the transmission light path of the eleventh wave plate 51855 is the first light-out light path of the light filtering assembly 5185, and the first filter 5184 is closer to the light emitting component 400 than the light filtering assembly 5185. Therefore, the first light receiving assembly 530 located on the reflection light path of the first filter 5184 is closer to the light emitting component 400 than the light filtering assembly 5185, which can effectively reduce the length of the light receiving component.

[0368] As shown in FIG. 13d, the light filtering assembly 5185 is a combination of a second substrate and a plurality of wave plates, and the second light-out light path of the light filtering assembly 5185 can be the transmission light path of the tenth wave plate 51854. Therefore, the second filter 5186 can be located on the transmission light path of the tenth wave plate 51854 of the light filtering assembly 5185, so that the second filter 5186 can receive the first wavelength light signal and the second wavelength light signal transmitted by the tenth wave plate 51854.

[0369] As shown in FIG. 13d, the emission light path is as follows: the emission light signal is first transmitted through the second filter 5186, then transmitted through the tenth wave plate 51854, then reflected through the eighth wave plate 51852 and the eleventh wave plate 51855 in turn, then transmitted through the ninth wave plate 51853, and finally coupled to the fiber adapter 700 through the first lens 5171.

[0370] The receiving light path is as follows: the received light signal is first collimated by the first lens 5171, then transmitted by the ninth wave plate 51853 of the light filtering assembly 5185, and then incident on the eleventh wave plate 51855 of the light filtering assembly 5185. The third-wavelength light signal in the received light signal is first reflected by the eleventh wave plate 51855 of the light filtering assembly 5185, and then reflected by the first light filtering plate 5184 to the first light receiving assembly 530. The first-wavelength light signal and the second-wavelength light signal in the received light signal are reflected by the eleventh wave plate 51855 of the light filtering assembly 5185 and the eighth wave plate 51852 of the light filtering assembly 5185 in sequence, then transmitted by the tenth wave plate 51854, and then reflected by the second light filtering plate 5186. The first-wavelength light signal in the received light signal is transmitted by the third light filtering plate 5187 to the second light receiving assembly 520. The second-wavelength light signal in the received light signal is reflected by the third light filtering plate 5187 to the third light receiving assembly 540.

[0371] The rest of the sixth light receiving assembly is the same as the first light receiving assembly except for the part different from the first light receiving assembly, which will not be described here.

[0372] FIG. 13e is a partial light path diagram of a sixth light receiving assembly according to some embodiments. As shown in FIG. 13e, in some embodiments, the light receiving assembly 500 can include a first light receiving assembly 530, a second light receiving assembly 520, a third light receiving assembly 540, and a first light assembly 517d, which can transmit the emitted light signal to the fiber adapter 700. The first light assembly 517d can also divide the received light signal into a first-wavelength light signal, a second-wavelength light signal, and a third-wavelength light signal, which are incident on the corresponding light receiving assemblies, respectively. For example, the first-wavelength light signal is incident on the second light receiving assembly 520, the second-wavelength light signal is incident on the third light receiving assembly 540, and the third-wavelength light signal is incident on the first light receiving assembly 530.

[0373] As shown in FIG. 13e, the second light receiving assembly 520 and the third light receiving assembly 540 can be located on one side of the light receiving assembly 500, and the third light receiving assembly 540 is closer to the light emitting assembly than the second light receiving assembly 520. The first light receiving assembly 530 can be located on the other side of the light receiving assembly 500, and the first light receiving assembly 530 is closer to the light emitting assembly than the second light receiving assembly 520.

[0374] In some embodiments, the first light assembly 517d can include a fourth filter 5182. The fourth filter 5182 can be located on the light emitting direction of the light emitting component 400 and the light emitting direction of the fiber adapter 700, so that the emitted light signal emitted by the light emitting component 400 is transmitted to the fiber adapter 700 after being transmitted, and the fiber adapter 700 can also receive the received light signal transmitted by the fiber adapter 700. In some embodiments, the fourth filter 5182 can allow the second wavelength light signal and the third wavelength light signal to be transmitted, and can also allow the first wavelength light signal to be reflected.

[0375] In some embodiments, the first light assembly 517d can include a fifth filter 5083. The fifth filter 5083 can be located on the reflection light path of the fourth filter 5182, so as to receive the first wavelength light signal reflected by the fourth filter 5182. The fifth filter 5083 can allow the first wavelength light signal to be reflected. The second light receiving assembly 520 can be located on the reflection light path of the fifth filter 5083, so that the second light receiving assembly 520 can receive the first wavelength light signal reflected by the fifth filter 5083. The fourth filter 5182 and the fifth filter 5083 cooperate with each other, so that the first wavelength light signal can be vertically incident into the second light receiving assembly 520. In some embodiments, the fifth filter 5083 can be located between the fourth filter 5182 and the second light receiving assembly 520, so that the fifth filter 5083 can reflect the first wavelength light signal reflected by the fourth filter 5182 to the second light receiving assembly 520. In some embodiments, the fourth filter 5182 can be located between the fifth filter 5083 and the second light receiving assembly 520, so that the fifth filter 5083 can reflect the first wavelength light signal reflected by the fourth filter 5182 to the second light receiving assembly 520. The fourth filter 5182 can be located between the fifth filter 5083 and the second light receiving assembly 520, and can provide a containing space for the second light receiving assembly 520,

[0376] In some embodiments, the first light assembly 517d can include a sixth filter 5081. The sixth filter 5081 can be located on the transmission light path of the fourth filter 5182, so as to receive the second wavelength light signal and the third wavelength light signal transmitted by the fourth filter 5182. The sixth filter 5081 can allow the second wavelength light signal to be transmitted, and can also allow the third wavelength light signal to be reflected. The first light receiving assembly 530 can be located on the reflection light path of the sixth filter 5081, so that the first light receiving assembly 530 can receive the third wavelength light signal reflected by the sixth filter 5081. The fourth filter 5182 and the sixth filter 5081 cooperate with each other, so that the third wavelength light signal can be vertically incident into the first light receiving assembly 530.

[0377] The sixth filter 5081 can be located in the light emitting direction of the light emitting component 400, so that the sixth filter 5081 can receive the emitted light signal emitted by the light emitting component 400. The sixth filter 5081 can allow the emitted light signal to be transmitted, and the sixth filter 5081 can be located between the light emitting component 400 and the fourth filter 5182, so that the emitted light signal is transmitted through the sixth filter 5081 and then enters the fourth filter 5182, and finally transmitted through the fourth filter 5182 to the fiber adapter 700.

[0378] In some embodiments, the first light assembly 517d can include a seventh filter 5079. The seventh filter 5079 can be located in the transmission light path of the fourth filter 5182, so that the seventh filter 5079 can receive the second wavelength light signal and the third wavelength light signal transmitted through the fourth filter 5182. The seventh filter 5079 can allow the second wavelength light signal to be reflected and the third wavelength light signal to be transmitted. The third light receiving assembly 540 can be located in the reflected light path of the seventh filter 5079, so that the third light receiving assembly 540 can receive the second wavelength light signal reflected by the seventh filter 5079.

[0379] The seventh filter 5079, the fourth filter 5182 and the sixth filter 5081 cooperate with each other, so that the second wavelength light signal can be vertically incident into the third light receiving assembly 540. The seventh filter 5079 can be located in the light emitting direction of the light emitting component 400, so that the seventh filter 5079 can receive the emitted light signal emitted by the light emitting component 400. The seventh filter 5079 can allow the emitted light signal to be transmitted, and the seventh filter 5079 can be located between the light emitting component 400 and the fourth filter 5182, so that the emitted light signal is transmitted through the seventh filter 5079 and then enters the fourth filter 5182, and finally transmitted through the fourth filter 5182 to the fiber adapter 700. In some embodiments, the seventh filter 5079 can be located between the light emitting component 400 and the sixth filter 5081, and the seventh filter 5079 is located in the transmission light path of the sixth filter 5081, so that the emitted light signal is transmitted through the seventh filter 5079, the sixth filter 5081 and the fourth filter 5182 in sequence to the fiber adapter 700.

[0380] In some embodiments, the sixth filter 5081 can be located between the light emitting component 400 and the seventh filter 5079, and the sixth filter 5081 is located on the transmission light path of the seventh filter 5079, so that the emitted light signal is transmitted through the sixth filter 5081, the seventh filter 5079 and the fourth filter 5182 in turn to the fiber adapter 700. Taking the case that the sixth filter 5081 is located between the light emitting component 400 and the seventh filter 5079 as an example to introduce the emission light path and the receiving light path. As shown in FIG. 13e, the emission light path is as follows: the emitted light signal is transmitted through the seventh filter 5079, the sixth filter 5081 and the fourth filter 5182 in turn, and then coupled to the fiber adapter 700 through the first lens 5171.

[0381] The receiving light path is as follows: the received light signal is incident to the fourth filter 5182 after collimation by the first lens 5171. The first wavelength light signal in the received light signal is first reflected by the fourth filter 5182, and then reflected by the fifth filter 5083 to the second light receiving component 520. The second wavelength light signal in the received light signal is first transmitted through the fourth filter 5182, and then transmitted through the sixth filter 5081, and finally reflected by the seventh filter 5079 to the third light receiving component 540. The third wavelength light signal in the received light signal is first transmitted through the fourth filter 5182, and then reflected by the sixth filter 5081 to the first light receiving component 530.

[0382] The rest of the part is the same as the first light receiving component except that the part described above is different from the first light receiving component, which will not be repeated here.

[0383] FIG. 13f is a partial light path diagram of a seventh light receiving component according to some embodiments. As shown in FIG. 13f, in some embodiments, the light receiving component 500 can include a first light receiving component 530, a fourth light receiving component 560 and a first light component 517g, and the first light component 517g can include a wave division component 5172 which can transmit the emitted light signal. The wave division component 5172 can also divide the received light signal into first wavelength light signal, second wavelength light signal and third wavelength light signal, and emit them, which are incident to the corresponding light receiving components respectively. For example, the first wavelength light signal and the second wavelength light signal are incident to the fourth light receiving component 560, and the third wavelength light signal is incident to the first light receiving component 530.

[0384] The wave division component 5172 can be the wave division component 5172a, or the wave division component 5172b, or the wave division component 5172c, which is not limited here. Taking the wave division component 5172 as the wave division component 5172a as an example to introduce the first light component 517g.

[0385] As shown in FIG. 13f, the fourth light receiving assembly 560 can be vertically arranged relative to the optical axis of the emitted light signal, and the first light receiving assembly 530 can be vertically arranged relative to the optical axis of the emitted light signal.

[0386] In some embodiments, the fourth light receiving assembly 560 can include a first light receiving chip 561 and a second light receiving chip 562. The first light receiving chip 561 can receive the first wavelength light signal, and the second light receiving chip 562 can receive the second wavelength light signal.

[0387] There is a gap between the first light receiving chip 561 and the second light receiving chip 562, so that the first light receiving chip 561 can receive the first wavelength light signal, and the second light receiving chip 562 can receive the second wavelength light signal, reducing mutual crosstalk between the first wavelength light signal and the second wavelength light signal.

[0388] The fourth light receiving assembly 560 can include a third lens 563 and a fourth lens 564. The first light receiving chip 561 can be located at the focal point of the third lens 563, so that the first light receiving chip 561 can receive the first wavelength light signal after being converged by the third lens 563. The second light receiving chip 562 can be located at the focal point of the fourth lens 564, so that the second light receiving chip 562 can receive the first wavelength light signal after being converged by the fourth lens 564.

[0389] In some embodiments, the fourth light receiving assembly 560 and the first light receiving assembly 530 can be located at both ends of the wavelength division assembly 5172a, so that the fourth light receiving assembly 560 and the first light receiving assembly 530 can receive three beams of light signals of different wavelengths divided by the wavelength division assembly 5172a. In some embodiments, the first light receiving assembly 530 and the fourth light receiving assembly 560 are located on different sides of the light receiving component 500, which can reduce the length of the light receiving component.

[0390] The first light receiving assembly 530 and the fourth light receiving assembly 560 are located on different sides of the light receiving component 500, and the first light receiving assembly 530 is farther away from the light emitting component 400 than the fourth light receiving assembly 560. Then, the second light receiving chip 562 is closer to the light emitting component 400 than the first light receiving chip 561, so that the first light receiving chip 561 and the second light receiving chip 562 can receive corresponding received light signals.

[0391] As shown in FIG. 13f, in some embodiments, the first light receiving assembly 530 and the fourth light receiving assembly 560 are located on the same side of the light receiving component 500, which can shorten the width of the light receiving component 500. The first light receiving assembly 530 is farther away from the light emitting component 400 than the fourth light receiving assembly 560.

[0392] The first light receiving component 530 and the fourth light receiving component 560 are located on the same side of the light receiving component 500, and the first light receiving component 530 is farther away from the light emitting component 400 than the fourth light receiving component 560, and then the first light receiving chip 561 is closer to the light emitting component 400 than the second light receiving chip 562, so that the first light receiving chip 561 and the second light receiving chip 562 can receive corresponding received light signals.

[0393] In some embodiments, the first light component 517g can include a second reflecting sheet 5176 and a first filtering sheet 5177. The second reflecting sheet 5176 can be located in the light emitting direction of the third wave sheet 51724 of the wave division component 5172a, so that the second reflecting sheet 5176 can reflect the third wavelength light signal transmitted by the third wave sheet 51724. The first filtering sheet 5177 can be located in the reflected light path of the second reflecting sheet 5176, so that the first filtering sheet 5177 can filter the third wavelength light signal reflected by the second reflecting sheet 5176.

[0394] In some embodiments, the first light component 517g can include a fourth reflecting sheet 5188. The fourth reflecting sheet 5188 can be located in the transmitted light path of the fifth wave sheet 51726a, so that the fourth reflecting sheet 5188 can receive the first wavelength light signal transmitted by the fifth wave sheet 51726a. The fourth reflecting sheet 5188 can be located in the transmitted light path of the sixth wave sheet 51727a, so that the fourth reflecting sheet 5188 can receive the first wavelength light signal transmitted by the sixth wave sheet 51727a.

[0395] In some embodiments, the first light component 517g can include a second filtering sheet 5178, which can be located in the reflected light path of the fourth reflecting sheet 5188. The third lens 563 can be located in the transmitted light path of the second filtering sheet 5178, so that the third lens 563 can receive the first wavelength light signal filtered by the second filtering sheet 5178 and converge the first wavelength light signal to the first light receiving chip 561.

[0396] In some embodiments, the first light component 517g can include a third filtering sheet 5174, which can be located in the reflected light path of the fourth reflecting sheet 5188. The fourth lens 564 can be located in the transmitted light path of the third filtering sheet 5174, so that the fourth lens 564 can receive the second wavelength light signal filtered by the third filtering sheet 5174 and converge the second wavelength light signal to the second light receiving chip 562.

[0397] As shown in FIG. 13f, the receiving light path is as follows: the received light signal is first collimated by the first lens 5171, second transmitted by the first wave plate 51722, third reflected by the fourth wave plate 51725 and the second wave plate 51723a in turn, and then incident to the fifth wave plate 51726a. The first wavelength light signal in the received light signal is first transmitted by the fifth wave plate 51726a, then reflected by the fourth reflecting sheet 5188, and then filtered by the second filter sheet 5178, and finally coupled to the first light receiving chip 563 by the third lens 563. The third wavelength light signal in the received light signal is first reflected by the fifth wave plate 51726a, then transmitted by the third wave plate 51724a, then reflected by the second reflecting sheet 5176, and finally filtered by the first filter sheet 5177 and then incident to the first light receiving component 530. The second wavelength light signal in the received light signal is first reflected by the fifth wave plate 51726a and the third wave plate 51724a, second transmitted by the sixth wave plate 51727a, then reflected by the fourth reflecting sheet 5188, then filtered by the third filter sheet 5174, and finally coupled to the second light receiving chip 564 by the fourth lens 564. Except for the part different from the first light receiving component, the rest is the same as the first light receiving component, which will not be described here. The first shell of the above several light receiving components can be adaptively modified according to the first shell of the first light receiving component, which will not be described here.

[0398] FIG. 14a is a structural diagram of a first light emitting component according to some embodiments. FIG. 14b is a structural diagram of the first light emitting component from another perspective according to some embodiments. FIG. 14c is an exploded view of the first light emitting component according to some embodiments. As shown in FIG. 14a, FIG. 14b and FIG. 14c, in some embodiments, the light emitting component 400 can include a second cavity. The second cavity can be connected with one end of the first cavity.

[0399] In some embodiments, the second cavity can include a second cover plate 420. In some embodiments, the second cavity can include a second shell 410. The second cover plate 420 can be covered on the second shell 410 to form the second cavity. In some embodiments, the second shell 410 can include a bottom plate 411. The bottom plate 411 can be used to support devices. In some embodiments, the second shell 410 can include a first side wall 412. The first side wall 412 can be located at one end of the second shell 410. The bottom of the first side wall 412 can be connected with the bottom plate 411.

[0400] In some embodiments, the second shell 410 can include a second side wall 413. The second side wall 413 can be located at the side of the first shell 510 510. The bottom of the second side wall 413 can be connected with the bottom plate 411. One end of the second side wall 413 can be connected with one end of the second side wall 413.

[0401] In some embodiments, the second housing 410 can include a third side wall 414. The third side wall 414 can be located at the other end of the first housing 510510. The third side wall 414 can be close to the circuit board 300. The bottom of the third side wall 414 can be connected with the bottom plate 411. One end of the third side wall 414 can be connected with the other end of the second side wall 413.

[0402] In some embodiments, the second housing 410 can include a fourth side wall 415. The fourth side wall 415 can be located at the side of the first housing 510510. The fourth side wall 415 can be arranged opposite to the second side wall 413. The bottom of the fourth side wall 415 can be connected with the bottom plate 411. One end of the fourth side wall 415 can be connected with the other end of the third side wall 414. The other end of the fourth side wall 415 can be connected with the other end of the first side wall 412.

[0403] The first side wall 412, the second side wall 413, the third side wall 414 and the fourth side wall 415 are sequentially connected and the bottoms are respectively connected with the bottom plate 411 to form a second inner cavity. The tops of the first side wall 412, the second side wall 413, the third side wall 414 and the fourth side wall 415 support and connect the second cover plate 420. In some embodiments, the second housing 410 is a housing integrally formed of a metal material. In some embodiments, the first side wall 412 can be provided with a sixth connecting hole 4121. The sixth connecting hole 4121 communicates with the second inner cavity. The sixth connecting hole 4121 serves as a light emitting port of the second cavity, i.e., the sixth connecting hole 4121 is a light emitting port of the light emitting component 400. The sixth connecting hole 4121 is connected with the first housing 510510, so that the second housing 410 communicates with the accommodating cavity 516 through the sixth connecting hole 4121. For example, the other end of the connecting seat 5101 is embedded to connect the sixth connecting hole 4121. In some embodiments, the outer side of the first side wall 412 is provided with a boss 4122. One end of the sixth connecting hole 4121 penetrates through the boss 4122. The end of the connecting seat 5101 is embedded to connect the boss 4122.

[0404] In some embodiments, the third side wall 414 can be provided with two rows of pins. Each row of pins includes a plurality of pins 430. The pins 430 on the third side wall 414 are electrically connected with the circuit board 300 through corresponding flexible circuit boards. In some embodiments, the fourth side wall 415 can be provided with two rows of parallel pins. Each row of pins includes a plurality of pins 430. The pins 430 on the fourth side wall 415 are electrically connected with the circuit board 300 through corresponding flexible circuit boards.

[0405] Two rows of pins are arranged on the third side wall 414 and the fourth side wall 415 respectively, and each row of pins includes a plurality of pins 430. For ease of description, the row of pins on the third side wall 414 and the fourth side wall 415 close to the bottom plate 411 is referred to as the bottom row of pins on the third side wall 414 and the fourth side wall 415. The pins 430 on the third side wall 414 and the pins 430 on the fourth side wall 415 are respectively electrically connected to the circuit board 300 through the corresponding flexible circuit boards.

[0406] As shown in FIGS. 14a, 14b and 14c, in some embodiments, the second housing 410 can be provided with a first laser assembly 440. The first laser assembly 440 can be located at the side edge of a side wall of the second housing 410. The first laser assembly 440 can generate a fourth wavelength optical signal. In some embodiments, the second housing 410 can be provided with a second laser assembly 450. The second laser assembly 450 can be located at the side edge of a side wall of the second housing 410. The second laser assembly 450 can generate a fifth wavelength optical signal. In some embodiments, the second housing 410 can be provided with a third laser assembly 460. The third laser assembly 460 can be located at the side edge of a side wall of the second housing 410. The third laser assembly 460 can generate a sixth wavelength optical signal.

[0407] In some embodiments, the first laser assembly 440, the second laser assembly 450 and the third laser assembly 460 are all located at the side edge of the third side wall 414, so that the first laser assembly 440, the second laser assembly 450 and the third laser assembly 460 are arranged in a row.

[0408] In some embodiments, the first laser assembly 440 is located at the side edge of the second side wall 413 and the third side wall 414; the second laser assembly 450 and the third laser assembly 460 are located at the side edge of the fourth side wall 415, and the third laser assembly 460 is located at the side of the second laser assembly 450 away from the third side wall 414, and the third laser assembly 460 is located at the side edge of the first side wall 412, so that the first laser assembly 440, the second laser assembly 450 and the third laser assembly 460 are distributed at the side edges of two connected side walls of the second housing 410, and the first laser assembly 440, the second laser assembly 450 and the third laser assembly 460 are in a triangular distribution state rather than arranged in a row, so as to reduce the packaging volume of the light emitting component 400.

[0409] In some embodiments, the third side wall 414 is arranged along a width direction of the second housing 410, and the fourth side wall is arranged along a length direction of the second housing 410. The first laser assembly 440 is arranged along the width direction in the second housing 410, so as to reduce the size of the second housing 410 along the width direction. The second laser assembly 450 and the third laser assembly 460 are arranged along the length direction in the second housing 410, which cooperates with the arrangement of the first laser assembly 440 along the width direction in the second housing 410, so as to arrange sufficient laser assemblies in the second housing 410, while reducing the overall size of the second housing 410, and further reducing the size of the light emitting component 400.

[0410] In some embodiments, the first laser assembly 440, the second laser assembly 450 and the third laser assembly 460 have different transmission rates. For example, the first laser assembly 440 has a transmission rate greater than that of the second laser assembly 450, and the second laser assembly 450 has a transmission rate greater than that of the third laser assembly 460. For example, the first laser assembly 440 has a transmission rate of 50G, the second laser assembly 450 has a transmission rate of 10G, and the third laser assembly 460 has a transmission rate of 2.5G.

[0411] In some embodiments, the second housing 410 can be provided with a combining assembly. The combining assembly can combine the fourth wavelength optical signal, the fifth wavelength optical signal and the sixth wavelength optical signal into one emission optical signal.

[0412] In some embodiments, the combining assembly can be a wavelength division multiplexer. The wavelength division multiplexer has an inlet side facing the first laser assembly 440, the second laser assembly 450 and the third laser assembly 460, and an outlet side facing the sixth connecting hole 4121. The wavelength division multiplexer combines the first wavelength optical signal, the second wavelength optical signal and the third wavelength optical signal emitted by the first laser assembly 440, the second laser assembly 450 and the third laser assembly 460 into one emission optical signal.

[0413] In some embodiments, the combining assembly includes a polarization component and a polarization combining assembly. The polarization component is used to adjust the polarization direction of the optical signal, and the polarization combining assembly combines multiple polarized lights into one. The polarization direction of the optical signal is adjusted by the polarization component, and then multiple polarized lights are combined into one by the polarization combining assembly, so that the light emitting component can realize combining.

[0414] The two types of combining assemblies described above can be applied to the case where the first laser assembly 440, the second laser assembly 450 and the third laser assembly 460 are arranged in a row.

[0415] In some embodiments, the combining assembly includes multiple filters which cooperate with each other to combine the fourth wavelength optical signal, the fifth wavelength optical signal and the sixth wavelength optical signal into one emission optical signal.

[0416] The wavelength combination assembly can be applied not only to the case where the first laser assembly 440, the second laser assembly 450, and the third laser assembly 460 are arranged in a row, but also to the case where the first laser assembly 440, the second laser assembly 450, and the third laser assembly 460 are arranged in a triangular distribution.

[0417] In some embodiments, the wavelength combination assembly can include an eighth optical filter 416. The eighth optical filter 416 can be arranged at the side of the sixth connecting hole 4121. The eighth optical filter 416 is located on the output light path of the first laser assembly 440, the second laser assembly 450, and the third laser assembly 460. The eighth optical filter 416 can be used for the transmission of the fourth wavelength optical signal and the fifth wavelength optical signal, and also for the reflection of the sixth wavelength optical signal.

[0418] In some embodiments, the wavelength combination assembly can include a ninth optical filter 417. The ninth optical filter 417 can be arranged at the side of the sixth connecting hole 4121. The ninth optical filter 417 can be located on the output light path of the first laser assembly 440, the second laser assembly 450, and the third laser assembly 460. The ninth optical filter 417 can be arranged side by side with the eighth optical filter 416. The ninth optical filter 417 can be used for the transmission of the fourth wavelength optical signal and the reflection of the fifth wavelength optical signal.

[0419] The eighth filter 416 and the ninth filter 417 are arranged at the side of the sixth connecting hole 4121 and are located on the output light paths of the first laser assembly 440, the second laser assembly 450 and the third laser assembly 460. The eighth filter 416 and the ninth filter 417 are arranged side by side to change the transmission light paths of the fourth wavelength light signal, the fifth wavelength light signal and the sixth wavelength light signal so that the fourth wavelength light signal, the fifth wavelength light signal and the sixth wavelength light signal can pass through the sixth connecting hole 4121. In some embodiments, the eighth filter 416 and the ninth filter 417 are arranged at the side of the junction of the first side wall 412 and the second side wall 413 so that the eighth filter 416, the ninth filter 417 and the first laser assembly 440 are arranged compactly, facilitating the control of the length direction of the second housing 410. In some embodiments, the eighth filter 416 is arranged at the junction of the output light path of the first laser assembly 440 and the output light path of the third laser assembly 460, and the ninth filter 417 is arranged at the junction of the output light path of the first laser assembly 440 and the output light path of the second laser assembly 450. The first laser assembly 440 is located on the transmission side of the ninth filter 417, the second laser assembly 450 is located on the reflection side of the ninth filter 417, and the third laser assembly 460 is located on the reflection side of the eighth filter 416. For example, the eighth filter 416 includes a first optical surface and a second optical surface, and the first optical surface and the second optical surface are the main optical surfaces of the eighth filter 416. The ninth filter 417 includes a third optical surface and a fourth optical surface, and the third optical surface and the fourth optical surface are the main optical surfaces of the ninth filter 417. The first optical surface faces the third laser assembly 460, the second optical surface faces the ninth filter 417, the third optical surface faces the second laser assembly 450, and the fourth optical surface faces the first laser assembly 440.

[0420] In some embodiments, a lens 418 can be arranged in the second housing 410. The lens 418 can be arranged on the light paths of the first laser assembly 440, the second laser assembly 450 and the third laser assembly 460 to the eighth filter 416 or the ninth filter 417. For example, a fifth lens 4181 is arranged on the transmission light path of the first laser assembly 440 to the ninth filter 417, and the fifth lens 4181 collimates the fourth wavelength light signal. A sixth lens 4182 is arranged on the transmission light path of the second laser assembly 450 to the ninth filter 417, and the sixth lens 4182 collimates the fifth wavelength light signal. A seventh lens 4183 is arranged on the transmission light path of the third laser assembly 460 to the eighth filter 416, and the seventh lens 4183 collimates the sixth wavelength light signal.

[0421] FIG. 14d is a partial structural schematic diagram I of a light emitting component according to some embodiments of the present disclosure. FIG. 14e is a partial structural schematic diagram II of a light emitting component according to some embodiments of the present disclosure. FIG. 14f is a cross-sectional view I of a light emitting component according to some embodiments of the present disclosure. As shown in FIG. 14d, FIG. 14e and FIG. 14f, in some embodiments, the first laser assembly 440 can include a first laser chip 442. The first laser chip 442 is integrated with an electro-absorption modulated laser and a semiconductor optical amplifier. In some embodiments, the first laser assembly 440 can include a first substrate 441. The first laser chip 442 can be mounted on the first substrate 441.

[0422] In some embodiments, a ground layer 4410 can be disposed on the first substrate 441. The first laser chip 442 can be mounted on the ground layer 4410.

[0423] In some embodiments, a first high-frequency pad 4411 can be disposed on the first substrate 441. The first high-frequency pad 4411 can be located at a side of the first laser chip 442. The first high-frequency pad 4411 can be wire-bonded to the first laser chip 442.

[0424] In some embodiments, a first LD pad 4412 can be disposed on the first substrate 441. The first LD pad 4412 can be located at a side of the first laser chip 442. The first LD pad 4412 can be wire-bonded to the first laser chip 442.

[0425] In some embodiments, a first SOA pad 4413 can be disposed on the first substrate 441. The first SOA pad 4413 can be located at a side of the first laser chip 442. The first SOA pad 4413 can be wire-bonded to the first laser chip 442.

[0426] The first high-frequency pad 4411, the first LD pad 4412 and the first SOA pad 4413 are located at the side of the first laser chip 442, and the first high-frequency pad 4411, the first LD pad 4412 and the first SOA pad 4413 are wire-bonded to the first laser chip 442, respectively.

[0427] The first high-frequency pin 4301, the first SOA pin 4302 and the first LD pin 4303 are disposed on the third side wall 414, embedded on the third side wall 414 and have end portions extending into the inner cavity of the second housing 410, respectively, and the first high-frequency pin 4301, the first SOA pin 4302 and the first LD pin 4303 are insulated from the third side wall 414 by the insulating layer, respectively, and the first high-frequency pin 4301 is located in the bottom row of pins on the third side wall 414.

[0428] The first high-frequency pin 4301 is electrically connected to the first high-frequency pad 4411, the first SOA pin 4302 is electrically connected to the first SOA pad 4413, and the first LD pin 4303 is electrically connected to the first LD pad 4412. For example, one end of the first high-frequency pin 4301 is wire-bonded to the first high-frequency pad 4411, one end of the first SOA pin 4302 is wire-bonded to the first SOA pad 4413, and one end of the first LD pin 4303 is wire-bonded to the first LD pad 4412.

[0429] In some embodiments, the height position of the first high-frequency pin 4301 on the third sidewall 414 is lower than the height position of the first SOA pin 4302 and the first LD pin 4303 on the third sidewall 414, i.e., the first high-frequency pin 4301 is closer to the bottom plate 411. The first ground pin 4304 is also arranged on the third sidewall 414, and the first ground pin 4304 is located at the side of the first high-frequency pin 4301 and is electrically connected to the third sidewall 414.

[0430] In some embodiments, the first adapter plate 481 can be arranged in the second housing 410. The first adapter plate 481 can be provided with a circuit pattern to realize electrical connection between the first high-frequency pin 4301 and the first laser assembly 440 through the first adapter plate 481. The first adapter plate 481 can be used to match the first laser chip 442 to ensure the impedance continuity of the high-frequency transmission link.

[0431] In some embodiments, the front surface of the first adapter plate 481 can be provided with a first high-frequency transmission line 4811. One side of the first high-frequency transmission line 4811 can be provided with a first ground layer 4812, and the other side of the first high-frequency transmission line 4811 can be provided with a second ground layer 4813. One end of the first high-frequency transmission line 4811 is electrically connected to the first high-frequency pad 4411, and the other end of the first high-frequency transmission line 4811 is electrically connected to the first high-frequency pin 4301. For example, one end of the first high-frequency transmission line 4811 is wire-bonded to the first high-frequency pad 4411, and the other end of the first high-frequency transmission line 4811 is soldered to the first high-frequency pin 4301; the ground layer 4110 is wire-bonded to the first ground layer 4812 and the second ground layer 4813.

[0432] In some embodiments, the back surface of the first adapter plate 481 can be provided with a ground layer, and the first ground layer 4812 and the second ground layer 4813 are respectively provided with through holes, and the first ground layer 4812 and the second ground layer 4813 are respectively connected to the ground layer on the back surface of the first adapter plate 481 through the through holes.

[0433] FIG. 14g is a partial structural schematic diagram III of a light emitting component according to some embodiments of the present disclosure. FIG. 14h is a cross-sectional view II of a light emitting component according to some embodiments of the present disclosure. FIG. 14i is a cross-sectional view III of a light emitting component according to some embodiments of the present disclosure. As shown in FIG. 14g, FIG. 14h and FIG. 14i, in some embodiments, the second laser assembly 450 can include a second laser chip 452. The second laser chip 452 is integrated with an electro-absorption modulated laser and a semiconductor optical amplifier.

[0434] As shown in FIG. 14g, FIG. 14h and FIG. 14i, in some embodiments, the second laser assembly 450 can include a second substrate 451. The second laser chip 452 is mounted on the second substrate 451.

[0435] In some embodiments, a ground layer 4510 can be disposed on the second substrate 451. The second laser chip 452 can be mounted on the ground layer 4510.

[0436] In some embodiments, a second high-frequency pad 4511 can be disposed on the second substrate 451. The second high-frequency pad 4511 can be located at the side of the second laser chip 452. The second high-frequency pad 4511 can be wire-bonded to the second laser chip 452.

[0437] In some embodiments, a second LD pad 4512 can be disposed on the second substrate 451. The second LD pad 4512 can be located at the side of the second laser chip 452. The second LD pad 4512 can be wire-bonded to the second laser chip 452.

[0438] In some embodiments, a second SOA pad 4513 can be disposed on the second substrate 451. The second SOA pad 4513 can be located at the side of the second laser chip 452. The second SOA pad 4513 can be wire-bonded to the second laser chip 452.

[0439] The second high-frequency pad 4511, the second LD pad 4512 and the second SOA pad 4513 are all located at the side of the second laser chip 452, and the second high-frequency pad 4511, the second LD pad 4512 and the second SOA pad 4513 are wire-bonded to the second laser chip 452, respectively.

[0440] The pins 430 can include a second high-frequency pin 4305, a second SOA pin 4306 and a second LD pin 4307, the second high-frequency pin 4305 being located in the bottom row of pins on the third side wall 414. The second high-frequency pin 4305 is electrically connected to the second high-frequency pad 4511, the second SOA pin 4306 is electrically connected to the second SOA pad 4513, and the second LD pin 4307 is electrically connected to the second LD pad 4512.

[0441] In some embodiments, the second adapter plate 482 can be disposed in the second housing 410. A circuit board pattern can be disposed on the second adapter plate 482. The second adapter plate 482 is used to realize electrical connection between the second high-frequency pin 4305 and the second laser assembly 450, and the second adapter plate 482 can also be used to impedance match the second laser chip 452 to ensure impedance continuity of the high-frequency transmission link.

[0442] In some embodiments, the second high-frequency pin 4305 is embeddedly connected to the third side wall 414, the second high-frequency pin 4305 is insulated from the third side wall 414 by an insulating layer, and the second adapter plate 482 is disposed on the side of the third side wall 414; the second SOA pin 4306 and the second LD pin 4307 are embeddedly connected to the fourth side wall 415 and are insulated from the fourth side wall 415 by an insulating layer, respectively; the second SOA pin 4306 is wire-connected to the second SOA pad 4513, and the second LD pin 4307 is wire-connected to the second LD pad 4512. The second ground pin 4308 is also disposed on the third side wall 414, the second ground pin 4308 is located on the side of the second high-frequency pin 4305, and the second ground pin 4308 is electrically connected to the third side wall 414. For example, the second ground pin 4308 is located on the side of the second high-frequency pin 4305 close to the first high-frequency pin 4301. The second adapter plate 482 and the first adapter plate 481 are located on the same side of the side wall of the second housing 410, which facilitates the assembly of the second adapter plate 482 and facilitates the assembly density of the devices in the second housing 410, thereby helping to reduce the size of the second housing 410.

[0443] In some embodiments, the front surface of the second adapter plate 482 is provided with a second high-frequency transmission line 4821, one side of the second high-frequency transmission line 4821 is provided with a third ground layer 4822, and the other side of the second high-frequency transmission line 4821 is provided with a fourth ground layer 4823. One end of the second high-frequency transmission line 4821 is used to electrically connect the second high-frequency pad 4511, and the other end of the second high-frequency transmission line 4821 is used to electrically connect the second high-frequency pin 4305. For example, one end of the second high-frequency transmission line 4821 is wire-connected to the second high-frequency pad 4511, and the other end of the second high-frequency transmission line 4821 is solder-connected to the second high-frequency pin 4305; the ground layer 4510 is electrically connected to the third ground layer 4822 and the fourth ground layer 4823.

[0444] In some embodiments, the back surface of the second adapter plate 482 is provided with a ground layer, and the third ground layer 4822 and the fourth ground layer 4823 are respectively provided with vias, and the third ground layer 4822 and the fourth ground layer 4823 are respectively connected to the ground layer on the back surface of the second adapter plate 482 through the vias. In some embodiments, the second housing 410 is further provided with a third adapter plate 483, and the third adapter plate 483 is provided with a circuit pattern, and the third adapter plate 483 is arranged between the second laser assembly 450 and the second adapter plate 482, and the side edges of the third adapter plate 483 are close to the first laser assembly 440. The third adapter plate 483 is used to realize the electrical connection between the second laser assembly 450 and the second adapter plate 482, and the third adapter plate 483 can also be used for impedance matching the second laser chip 452 to ensure the impedance continuity of the high-frequency transmission link. The third adapter plate 483 helps to reduce the wire length between the second laser assembly 450 and the second adapter plate 482, so as to reduce the parasitic inductance and ensure the high-frequency signal transmission quality.

[0445] In some embodiments, the front surface of the third adapter plate 483 is provided with a third high-frequency transmission line 4831, one side of the third high-frequency transmission line 4831 is provided with a fifth ground layer 4832, and the other side of the third high-frequency transmission line 4831 is provided with a sixth ground layer 4833. One end of the third high-frequency transmission line 4831 is used for electrical connection with the second high-frequency pad 4511, and the other end of the third high-frequency transmission line 4831 is used for electrical connection with the second high-frequency transmission line 4821. For example, one end of the second high-frequency transmission line 4821 is wire-bonded to the second high-frequency pad 4511, and the other end of the third high-frequency transmission line 4831 is wire-bonded to one end of the second high-frequency transmission line 4821; the fifth ground layer 4832 is wire-bonded to the third ground layer 4822, the sixth ground layer 4833 is wire-bonded to the fourth ground layer 4823, and the fifth ground layer 4832 and the sixth ground layer 4833 are respectively wire-bonded to the ground layer 4510.

[0446] In some embodiments, the front surface of the third adapter plate 483 is further provided with a third LD pad 4834 and a third SOA pad 4835, the third LD pad 4834 and the third SOA pad 4835 are close to the first laser assembly 440. The first LD pad 4412 and the first LD pin 4303 are electrically connected to the third LD pad 4834 respectively, and the first SOA pad 4413 and the first SOA pin 4302 are electrically connected to the third SOA pad 4835 respectively, so as to electrically connect the first laser assembly 440, the first LD pin 4303 and the first SOA pin 4302 through the third adapter plate 483, facilitate control of the wire bonding arc height, and then facilitate wire bonding. In some embodiments, a capacitor is attached on the third LD pad 4834 and the third SOA pad 4835 respectively, the first LD pad 4412 and the first LD pin 4303 are respectively provided with the capacitor on the third LD pad 4834, and the first SOA pad 4413 and the first SOA pin 4302 are respectively wire-bonded to the capacitor provided on the third SOA pad 4835. The third adapter plate 483 is arranged at the side edge of the connection between the third side wall 414 and the fourth side wall 415, so that the third adapter plate 483 can serve both the first laser assembly 440 and the second laser assembly 450, facilitating the coordination of the space in the second housing 410.

[0447] In some embodiments, the third laser assembly 460 can include a third laser chip 462.

[0448] In some embodiments, the third laser assembly 460 can include a third substrate 461. A negative pad 4611 can be provided on the third substrate. The third laser chip 462 is attached and arranged on the negative pad 4611.

[0449] In some embodiments, a positive pad 4612 can be provided on the third substrate. The third laser chip 462 is wire-bonded to the positive pad 4612.

[0450] The pin 430 can include a third LD pin 4309 and a fourth LD pin 4310, the third LD pin 4309 is wire-bonded to the positive pad 4612, and the fourth LD pin 4310 is wire-bonded to the negative pad 4611. Illustratively, the third LD pin 4309 and the fourth LD pin 4310 are embedded and arranged on the fourth side wall 415, and the ends thereof respectively extend into the inner cavity of the second housing 410 and are insulated from the fourth side wall 415 by an insulating layer.

[0451] In some embodiments, the third laser assembly 460 can include a back light detector 463 disposed on the third substrate 461 and located at the back light side of the third laser chip 462. The back light detector 463 is configured to receive the back light of the third laser chip 462 for sixth wavelength optical signal monitoring. The pins 430 can include an MPD pin 4311 wire-bonded to the back light detector 463. For example, the MPD pin 4311 is embedded on the fourth sidewall 415 with the end portion of the MPD pin 4311 extending into the inner cavity of the second housing 410 and insulated from the fourth sidewall 415 by an insulating layer.

[0452] In some embodiments, a Thermo Electric Cooler (TEC) 490 can be disposed in the second housing 410. The TEC 490 is connected to the bottom plate 411 at the bottom portion and supports the first laser assembly 440, the second laser assembly 450, and the third laser assembly 460, etc. at the top portion.

[0453] The side edges of the TEC 490 include a first TEC pad 491 and a second TEC pad 492 located at the side edges of the second sidewall 413. The pins 430 further include a first TEC pin 4312 electrically connected to the first TEC pad 491 and a second TEC pin 4313 electrically connected to the second TEC pad 492. For example, the first TEC pin 4312 and the second TEC pin 4313 are embedded on the third sidewall 414 with the end portions extending into the inner cavity of the second housing 410 and insulated from the third sidewall 414 by an insulating layer.

[0454] In some embodiments, a support plate 419 can be disposed in the second housing 410 and located at the top portion of the TEC 490. The support plate 419 is connected to the top portion of the TEC 490 at the bottom portion and supports the first laser assembly 440, the second laser assembly 450, and the third laser assembly 460, etc. at the top portion. In some embodiments, the support plate 419 is electrically connected to the ground layer on the front side of the third adapter plate 483.

[0455] In some embodiments, a fourth adapter plate 484 can be arranged in the second housing 410. The fourth adapter plate 484 is arranged on the support plate 419, and a circuit pattern is arranged on the fourth adapter plate 484, which is used to connect the TEC pads and the TEC pins. For example, the fourth adapter plate 484 includes a fourth substrate 4841, and a first metal layer 4842 and a second metal layer 4843 are arranged on the fourth substrate 4841 and extend along the length direction of the fourth substrate 4841, respectively. The fourth adapter plate 484 is arranged at the side of the second side wall 413 and at the side of the first laser assembly 440; one end of the first metal layer 4842 is wire-connected to the first TEC pad 491, and the other end of the first metal layer 4842 is wire-connected to the first TEC pin 4312; one end of the second metal layer 4843 is wire-connected to the second TEC pad 492, and the other end of the second metal layer 4843 is wire-connected to the second TEC pin 4313.

[0456] In some embodiments, a temperature sensor 4836 can be arranged on the third adapter plate 483. For example, the temperature sensor 4836 is a thermistor.

[0457] The pins 430 can include an RTH pin 4314, which is embedded in the third side wall 414, one end of the RTH pin 4314 extends into the inner cavity of the second housing 410, and the RTH pin 4314 is insulated from the third side wall 414 by an insulating layer; one end of the RTH pin 4314 is electrically connected to the temperature sensor 4836.

[0458] In some embodiments, an adapter pad 4837 can be arranged on the third adapter plate 483. The adapter pad 4837 is arranged at the side of the temperature sensor 4836, and the adapter pad 4837 is wire-connected to the temperature sensor 4836 and the RTH pin 4314, respectively. The adapter pad 4837 realizes the adapter of the temperature sensor 4836 and the RTH pin 4314, so as to reduce the heat transmission from the temperature sensor 4836 to the RTH pin 4314 through the wire connection, which causes the temperature sensor 4836 to inaccurately detect the temperature in the second cavity.

[0459] In some embodiments, the inner side of the third side wall 414 can include a first side surface 4141. The inner side of the third side wall 414 can include a second side surface 4142. The inner side of the third side wall 414 can include a first step surface 4143. The inner side of the third side wall 414 can include a second step surface 4144. The first side surface 4141 is connected to the first step surface 4143, one end of the second step surface 4144 is connected to the first side surface 4141, the other end of the second step surface 4144 is connected to the second side surface 4142, and the first step surface 4143 is closer to the bottom plate 411 than the second step surface 4144, i.e., the height position of the first step surface 4143 in the second shell 410 is lower than the height position of the second step surface 4144 in the second shell 410.

[0460] The first step surface 4143 supports the connection of the first adapter plate 481 and the second adapter plate 482. One end of the first high-frequency pin 4301 and one end of the second high-frequency pin 4305 pass through the first side surface 4141, one end of the first high-frequency pin 4301 extends above the first adapter plate 481, and one end of the second high-frequency pin 4305 extends to the second adapter plate 482. One end of the RTH pin 4314 passes through the first side surface 4141, one end of the first SOA pin 4302, one end of the first LD pin 4303, one end of the first TEC pin 4312, and one end of the second TEC pin 4313 pass through the second side surface 4142. The second ground pin 4308 is located between the first high-frequency pin 4301 and the second high-frequency pin 4305, and the first ground pin 4304 is located on the side of the first high-frequency pin 4301 away from the second high-frequency pin 4305.

[0461] In some embodiments, the pins passing through the first side surface 4141 form a first row of pins 430a, and the pins passing through the second side surface 4142 form a second row of pins 430b, i.e., the pins arranged on the third side wall 414 are arranged in two rows. The pins in the first row of pins 430a are staggered with the pins in the second row of pins 430b, which facilitates pin wire bonding and flexible circuit board adaptation, and reduces the risk of air leakage due to deformation of the insulating layer used to fix the pins.

[0462] In some embodiments, the MPD pin 4311 and the second SOA pin 4306 are located in one row, and the second LD pin 4307, the third LD pin 4309, and the fourth LD pin 4310 are located in one row.

[0463] In some embodiments, the sixth connecting hole 4121 is a stepped through hole that gradually decreases in size from one side of the boss 4122 to the inside of the second shell 410. A sealing window 4123 is arranged in the sixth connecting hole 4121 at the boss 4122, and the sealing window 4123 seals the sixth connecting hole 4121.

[0464] Figure 14j is a light path diagram of a first light emitting component showing the transmission path of the middle light emitting signal, according to some embodiments. As shown in Figure 14j, the fourth wavelength light signal generated by the first laser component 440 is transmitted to the fifth lens 4181, collimated by the fifth lens 4181, transmitted to the ninth filter 417, transmitted through the ninth filter 417, transmitted to the eighth filter 416, transmitted through the eighth filter 416, and transmitted to the sixth connecting hole 4121; the fifth wavelength light signal generated by the second laser component 450 is transmitted to the sixth lens 4182, collimated by the sixth lens 4182, transmitted to the ninth filter 417, reflected by the ninth filter 417, transmitted to the eighth filter 416, transmitted through the eighth filter 416, and transmitted to the sixth connecting hole 4121; the sixth wavelength light signal generated by the third laser component 460 is transmitted to the seventh lens 4183, collimated by the seventh lens 4183, transmitted to the eighth filter 416, reflected by the eighth filter 416, and transmitted to the sixth connecting hole 4121. The eighth filter 416 and the ninth filter 417 make the fourth wavelength light signal, the fifth wavelength light signal, and the sixth wavelength light signal share the same light path when outputting from the second housing 410.

[0465] Figure 15a is a structural diagram of a mounting bracket, according to some embodiments of the present disclosure. Figure 15b is another structural diagram of a mounting bracket, according to some embodiments of the present disclosure. Figure 15c is a diagram showing the use state of a mounting bracket, according to some embodiments of the present disclosure. As shown in Figures 15a, 15b, and 15c, in some embodiments, the mounting bracket 470 includes a bracket body 471. The side of the bracket body 471 can be provided with a first support body 472 and a second support body 473. The bottom of the bracket body 471 is used to connect the support plate 419; one end of the first support body 472 is connected to the bracket body 471, and the other end of the first support body 472 extends away from the bracket body 471; one end of the second support body 473 is connected to the bracket body 471, and the other end of the second support body 473 extends away from the bracket body 471; a gap 474 is formed between the first support body 472 and the second support body 473. The gap 474 is used to transmit the fourth wavelength light signal and the sixth wavelength light signal.

[0466] In some embodiments, one side of the first support body 472 can be provided with a first support surface 4721, the other side of the first support body 472 can be provided with a second support surface 4722, one side of the second support body 473 can be provided with a third support surface 4731, the other side of the second support body 473 can be provided with a fourth support surface 4732; the first support surface 4721 and the third support surface 4731 are inclined at a first preset angle, and the second support surface 4722 and the fourth support surface 4732 are inclined at a second preset angle. The first support surface 4721 and the third support surface 4731 support the connection of the second filter 416, and the second support surface 4722 and the fourth support surface 4732 support the connection of the third filter 407, facilitating the fixation of the second filter 416 and the third filter 407.

[0467] In some embodiments, the bracket body 471 can be provided with a first limiting surface 4711 and a second limiting surface 4712, which are respectively located at the side edges of the bracket body 471. The first limiting surface 4711 is located at one end of the first support surface 4721, and the second limiting surface 4712 is located at one end of the second support surface 4722. For example, one end of the first limiting surface 4711 and one end of the second limiting surface 4712 respectively extend to the top of the bracket body 471, and the other end of the first limiting surface 4711 and the other end of the second limiting surface 4712 respectively extend to the bottom of the bracket body 471. The first limiting surface 4711 limits the connection of the second filter 416, and the second limiting surface 4712 limits the connection of the third filter 407, and the first limiting surface 4711 and the second limiting surface 4712 facilitate the accurate assembly of the second filter 416 and the third filter 407.

[0468] FIG. 15d is a structural diagram of a second light emitting component according to some embodiments. FIG. 15e is an assembly diagram of another light transceiver component and a fiber adapter according to some embodiments. As shown in FIG. 15d and FIG. 15e, in some embodiments, the light emitting component 400 can include a second cavity. The second cavity can be connected with the light receiving component 500, so that the emitted light signal of the light emitting component 400 can be incident to the light receiving component 500.

[0469] In some embodiments, the light emitting component 400 can include at least one light emitting assembly. The at least one light emitting assembly can be connected with the second cavity, so that the light emitting component 400 can emit at least one wavelength of light signal.

[0470] In some embodiments, the light emitting component 400 can include a first light emitting assembly 402, and the first light emitting assembly 402 can emit a fourth wavelength of light signal.

[0471] In some embodiments, the light emitting component 400 can include a second light emitting assembly 401. The second light emitting assembly can emit a fifth wavelength light signal.

[0472] In some embodiments, the light emitting component 400 can include a third light emitting assembly 403. The third light emitting assembly 403 can emit a sixth wavelength light signal.

[0473] The light emitting component 400 can include the first light emitting assembly 402, the second light emitting assembly 401 and the third light emitting assembly 403, so that the light emitting component 400 can emit three wavelengths of light signals with different light signal rates.

[0474] In some embodiments, the first light emitting assembly 402, the second light emitting assembly 401 and the third light emitting assembly 403 can adopt a coaxial package. For example, the emission axes of the first light emitting assembly 402, the second light emitting assembly 401 and the third light emitting assembly 403 are parallel to each other. That is, the first light emitting assembly 402, the second light emitting assembly 401 and the third light emitting assembly 403 each include an emission tube cap and an emission tube base, the emission tube cap is arranged on the emission tube base to form an emission cavity, and a laser chip is arranged in the emission cavity to emit a light signal.

[0475] The emission tube base is also provided with an emission tube pin, one end of the emission tube pin is connected with the circuit board 300 through the flexible circuit board 900 to realize the electrical connection between the emission tube pin and the circuit board 300. The emission tube pin extends upward from the bottom of the emission tube base until it exceeds the top of the emission tube base and is wire-bonded with a pad where the laser chip is located to realize the electrical connection between the emission tube pin and the laser chip, and then the electrical signal on the circuit board 300 is transmitted to the laser chip through the emission tube pin.

[0476] In some embodiments, any two of the first light emitting assembly 402, the second light emitting assembly 401 and the third light emitting assembly 403 are located on one side wall of the light emitting component, and the remaining one light emitting assembly is located on the other side wall of the light emitting component. For example, the first light emitting assembly 402 and the second light emitting assembly 401 can be located on the third side wall of the light emitting component 400, and the third light emitting assembly 403 can be located on the fourth side wall of the light emitting component 400; the first light emitting assembly 402 can be located on the third side wall of the light emitting component 400, and the second light emitting assembly 401 and the third light emitting assembly 403 can be located on any outer wall of the light emitting component 400 connected with the third side wall. The outer wall can be the cover plate 420 or the bottom plate 411 or the second side wall or the fourth side wall of the first shell 410.

[0477] In some embodiments, the first light emitting component 402, the second light emitting component 401 and the third light emitting component 403 can be located at different outer walls of the light emitting part 400 respectively, so as to reduce the size of the light emitting part 400. For example, the first light emitting component 402 can be located at the third side wall of the light emitting part 400, the second light emitting component 401 can be located at the second side wall of the light emitting part 400, and the third light emitting component 403 can be located at the fourth side wall of the light emitting part 400.

[0478] Fig. 15f is an exploded view I of a second light emitting part according to some embodiments. Fig. 15g is an exploded view II of the second light emitting part according to some embodiments. As shown in Fig. 15f and Fig. 15g, in some embodiments, the second cavity can comprise a sixth connecting hole 4121. The sixth connecting hole 4121 can traverse a side wall of the second cavity close to the light receiving part 500, so that the optical signal in the second cavity can be transmitted to the light receiving part 500 through the sixth connecting hole 4121.

[0479] In some embodiments, the second cavity can comprise a seventh connecting hole 4131. The seventh connecting hole 4131 can be used for insertion of the second light emitting component 401, so that the second light emitting component 401 is connected with the second cavity. For example, the second light emitting component 401 is located at the seventh connecting hole 4131.

[0480] In some embodiments, the second cavity can comprise an eighth connecting hole 4145. The eighth connecting hole 4145 can be used for insertion of the first light emitting component 402, so that the first light emitting component 402 is connected with the second cavity. For example, the first light emitting component 402 is located at the eighth connecting hole 4145.

[0481] In some embodiments, the second cavity can comprise a ninth connecting hole 4151. The ninth connecting hole 4151 can be used for insertion of the third light emitting component 403, so that the third light emitting component 403 is connected with the second cavity. For example, the third light emitting component 403 is located at the ninth connecting hole 4151.

[0482] The seventh connecting hole 4131, the eighth connecting hole 4145 and the ninth connecting hole 4151 are located at different side walls of the second cavity respectively, so as to reduce the size of the second cavity. For example, the seventh connecting hole 4131 is located at the second side wall of the second cavity, the eighth connecting hole 4145 is located at the third side wall of the second cavity, and the ninth connecting hole 4151 is located at the fourth side wall of the second cavity.

[0483] As shown in Fig. 15f and Fig. 15g, in some embodiments, the second cavity can comprise a second cover plate 420.

[0484] As shown in FIG. 15f and FIG. 15g, in some embodiments, the second cavity can include a second housing 410. A second cover plate 420 can be coupled to the second housing 410 to form the second cavity. The second cavity can be configured to accommodate a second light assembly 404. The second light assembly 404 can be configured to output fourth, fifth and sixth wavelength light signals.

[0485] FIG. 16a is a partially exploded view of a second light emitting component according to some embodiments. FIG. 16b is a partially cross-sectional view of the second light emitting component according to some embodiments. FIG. 17 is an optical path diagram of the second light emitting component according to some embodiments. As shown in FIG. 16a, FIG. 16b and FIG. 17, in some embodiments, the second light assembly 404 can include a second light assembly 404a, which can include a first reflective-transmissive sheet 4043.

[0486] The first reflective-transmissive sheet 4043 can be configured to allow the fourth wavelength light signal to transmit. The first reflective-transmissive sheet 4043 can be located on an output optical path of the first light emitting assembly 402, such that the fourth wavelength light signal emitted by the first light emitting assembly 402 can transmit through the first reflective-transmissive sheet 4043.

[0487] The first reflective-transmissive sheet 4043 can be configured to allow the fifth wavelength light signal to reflect. The first reflective-transmissive sheet 4043 can be located on an output optical path of the second light emitting assembly 401, such that the fifth wavelength light signal emitted by the second light emitting assembly 401 can reflect through the first reflective-transmissive sheet 4043.

[0488] As shown in FIG. 16a, FIG. 16b and FIG. 17, in some embodiments, the second light assembly 404a can include a second reflective-transmissive sheet 4042.

[0489] The second reflective-transmissive sheet 4042 can be configured to allow the fourth wavelength light signal to transmit. The second reflective-transmissive sheet 4042 can be located on a transmission optical path of the first reflective-transmissive sheet 4043, such that the fourth wavelength light signal transmitted through the first reflective-transmissive sheet 4043 can transmit through the first reflective-transmissive sheet 4043.

[0490] The second reflective-transmissive sheet 4042 can be configured to allow the fifth wavelength light signal to transmit. The second reflective-transmissive sheet 4042 can be located on a reflection optical path of the first reflective-transmissive sheet 4043, such that the fifth wavelength light signal reflected through the first reflective-transmissive sheet 4043 can transmit through the second reflective-transmissive sheet 4042.

[0491] The second reflective-transmissive sheet 4042 can be configured to allow the sixth wavelength light signal to reflect. The second reflective-transmissive sheet 4042 can be located on an output direction of the third light emitting assembly 403, such that the sixth wavelength light signal emitted by the third light emitting assembly 403 can reflect through the second reflective-transmissive sheet 4042.

[0492] As shown in FIG. 15c and FIG. 17, in some embodiments, the second housing 410 can include a bottom plate 411. The bottom plate 411 can be used to support devices.

[0493] As shown in FIG. 15c and FIG. 17, in some embodiments, the second housing 410 can include a first side wall 412. The bottom of the first side wall 412 can be connected with the bottom plate 411. The first side wall 412 can be connected with the light receiving component 500. The first side wall 412 can have a sixth connecting hole 4121. The sixth connecting hole 4121 can pass through the first side wall 412. The sixth connecting hole 4121 can be in communication with the inner cavity of the second cavity, so that the emitted light signals of the light emitting component 400 can be transmitted to the light receiving component 500 through the sixth connecting hole 4121.

[0494] As shown in FIG. 15c and FIG. 17, in some embodiments, the second housing 410 can include a second side wall 413. The bottom of the second side wall 413 can be connected with the bottom plate 411. One end of the second side wall 413 can be connected with one end of the first side wall 412. The second side wall 413 can have a seventh connecting hole 4131. The seventh connecting hole 4131 can pass through the second side wall 413. The seventh connecting hole 4131 can be in communication with the inner cavity of the second cavity, so that the fifth wavelength light signals emitted by the second light emitting assembly 401 located in the seventh connecting hole 4131 can be incident to the inner cavity of the second cavity.

[0495] In some embodiments, the seventh connecting hole 4131 can be directed towards one side of the first reflective transmission sheet 4043, so that the fifth wavelength light signals emitted by the second light emitting assembly 401 can be reflected out through the first reflective transmission sheet 4043.

[0496] As shown in FIG. 15c and FIG. 17, in some embodiments, the second housing 410 can include a third side wall 414. The bottom of the third side wall 414 can be connected with the bottom plate. One end of the third side wall 414 can be connected with the other end of the second side wall 413. The third side wall 414 is arranged opposite to the first side wall 412. The third side wall 414 can have an eighth connecting hole 4145. The eighth connecting hole 4145 can pass through the third side wall 414. The eighth connecting hole 4145 can be in communication with the inner cavity of the second cavity, so that the fourth wavelength light signals emitted by the first light emitting assembly 402 located in the eighth connecting hole 4145 can be incident to the inner cavity of the second cavity.

[0497] In some embodiments, the eighth connecting hole 4145 can be directed towards the other side of the first reflective transmission sheet 4043, so that the fourth wavelength light signals emitted by the first light emitting assembly 402 can be incident to the first reflective transmission sheet 4043.

[0498] In some embodiments, one side of the first reflective-transmissive sheet 4043 is disposed opposite to the other side of the first reflective-transmissive sheet 4043, so that the fourth wavelength light signal incident to the first reflective-transmissive sheet 4043 can be transmitted out.

[0499] As shown in FIG. 15c and FIG. 17, in some embodiments, the second housing 410 can include a fourth side wall 415. The bottom of the fourth side wall 415 can be connected with the bottom plate. One end of the fourth side wall 415 can be connected with the other end of the third side wall 414. The other end of the fourth side wall 415 can be connected with the other end of the first side wall 412. The fourth side wall 415 can be disposed opposite to the second side wall 413. The fourth side wall 415 can have a ninth connecting hole 4151. The ninth connecting hole 4151 can pass through the fourth side wall 415. The ninth connecting hole 4151 can be in communication with the inner cavity of the second cavity, so that the light signal emitted by the light emitting component placed in the ninth connecting hole 4151 can be incident to the inner cavity of the second cavity. For example, the sixth wavelength light signal emitted by the third light emitting component 403 is incident to the inner cavity of the second cavity.

[0500] In some embodiments, the ninth connecting hole 4151 can be towards one side of the second reflective-transmissive sheet 4042, so that the sixth wavelength light signal emitted by the third light emitting component 403 placed in the ninth connecting hole 4151 can be reflected out through the second reflective-transmissive sheet 4042.

[0501] In some embodiments, the first reflective-transmissive sheet 4043 can be towards the other side of the second reflective-transmissive sheet 4042, so that the fifth wavelength light signal reflected by the first reflective-transmissive sheet 4043 and the fourth wavelength light signal transmitted by the first reflective-transmissive sheet 4043 can be incident to the second reflective-transmissive sheet 4042.

[0502] In some embodiments, one side of the second reflective-transmissive sheet 4042 is disposed opposite to the other side of the second reflective-transmissive sheet 4042, so that the fourth wavelength light signal and the fifth wavelength light signal incident to the second reflective-transmissive sheet 4042 can be transmitted out.

[0503] The first side wall 412, the second side wall 413, the third side wall 414 and the fourth side wall 415 are sequentially connected and respectively connected with the bottom plate 411, to form the second housing 410 with an opening. The opening of the second housing 410 can be towards the lower housing 202.

[0504] As shown in FIG. 15c, FIG. 16b and FIG. 17, in some embodiments, the vertical distance between the second end of the first reflective transmission sheet 4043 and the second side wall 413 is less than the vertical distance between the first end of the first reflective transmission sheet 4043 and the second side wall 413, so that the first reflective transmission sheet 4043 is arranged obliquely to the second side wall 413, so that the second wavelength emitted by the second light emitting component 401 located on the second side wall 413 can be reflected out through the first reflective transmission sheet 4043. Wherein, the end of the first reflective transmission sheet 4043 away from the first light emitting component 402 is the first end of the first reflective transmission sheet 4043, and the end of the first reflective transmission sheet 4043 close to the first light emitting component 402 is the second end of the first reflective transmission sheet 4043.

[0505] In some embodiments, the angle between the first reflective transmission sheet 4043 and the second side wall 413 is 45°, so that the second wavelength emitted by the second light emitting component 401 can be reflected through the first reflective transmission sheet 4043 and emitted along the length direction of the second housing 410.

[0506] As shown in FIG. 15c, FIG. 16b and FIG. 17, in some embodiments, the vertical distance between the second end of the second reflective transmission sheet 4042 and the fourth side wall 415 is less than the vertical distance between the first end of the second reflective transmission sheet 4042 and the fourth side wall 415, so that the second reflective transmission sheet 4042 is arranged obliquely to the fourth side wall 415, so that the third wavelength emitted by the third light emitting component 403 located on the fourth side wall 415 can be reflected out through the second reflective transmission sheet 4042. Wherein, the end of the second reflective transmission sheet 4042 away from the first light emitting component 402 is the first end of the second reflective transmission sheet 4042, and the end of the second reflective transmission sheet 4042 close to the first light emitting component 402 is the second end of the second reflective transmission sheet 4042.

[0507] In some embodiments, the angle between the second reflective transmission sheet 4042 and the fourth side wall 415 is 45°, so that the third wavelength emitted by the third light emitting component 403 can be reflected through the second reflective transmission sheet 4042 and emitted along the length direction of the second housing 410.

[0508] The angle between the second reflective transmission sheet 4042 and the fourth side wall 415 is 45°, and the angle between the first reflective transmission sheet 4043 and the second side wall 413 is 45°, so that the included angle between the first reflective transmission sheet 4043 and the second reflective transmission sheet 4042 is a right angle, i.e. 90°.

[0509] As shown in FIGS. 16a, 16b and 17, in some embodiments, the second light assembly 404a can include a fixing member 4041. The fixing member 4041 can include a first connecting surface 40414. The first connecting surface 40414 can be disposed adjacent to the second side wall 413. The first connecting surface 40414 can be disposed parallel to the second side wall 413, so that the fifth wavelength light signal emitted by the second light emitting assembly 401 is perpendicularly incident to the first connecting surface 40414.

[0510] In some embodiments, the first connecting surface 40414 can have a second light transmission hole 40413, which can be located in the light emission direction of the second light emitting assembly 401, so that the fifth wavelength light signal incident to the fixing member 4041 can be transmitted through the second light transmission hole 40413.

[0511] As shown in FIGS. 16a, 16b and 17, in some embodiments, the fixing member 4041 can include a second connecting surface 40415. One end of the second connecting surface 40415 can be connected to one end of the first connecting surface 40414. The second connecting surface 40415 can be connected to the first reflective transmission sheet 4043. The second connecting surface 40415 can be disposed obliquely to the second side wall 413, so that the first reflective transmission sheet 4043 is disposed obliquely to the second side wall 413.

[0512] In some embodiments, the second connecting surface 40415 can have a third light transmission hole 40411, which can be located in the light emission direction of the first light emitting assembly 402, so that the fourth wavelength light signal transmitted through the first reflective transmission sheet 4043 is transmitted along the third light transmission hole 40411 after being incident to the fixing member 4041.

[0513] In some embodiments, the third light transmission hole 40411 can be in communication with the second light transmission hole 40413, so that the fifth wavelength light signal is sequentially incident to the first reflective transmission sheet 4043 through the second light transmission hole 40413 and the third light transmission hole 40411, and is reflected by the first reflective transmission sheet 4043.

[0514] As shown in FIGS. 16a, 16b and 17, in some embodiments, the fixing member 4041 can include a third connecting surface 40416. One end of the third connecting surface 40416 can be connected to the other end of the second connecting surface 40415. The other end of the third connecting surface 40416 can be connected to the other end of the first connecting surface 40414. The third connecting surface 40416 can be connected to the second reflective transmission sheet 4042. The third connecting surface 40416 can be disposed obliquely to the fourth side wall 415, so that the second reflective transmission sheet 4042 is disposed obliquely to the fourth side wall 415.

[0515] In some embodiments, the second connecting surface 40415 can have a fourth light transmission hole 40412, which can be in communication with the second light transmission hole 40413 and the third light transmission hole 40411, so that the fifth wavelength optical signal and the fourth wavelength optical signal transmitted through the third light transmission hole 40411 are transmitted out through the fourth light transmission hole 40412.

[0516] As shown in FIG. 17, in some embodiments, the first light emitting assembly 402, the second light emitting assembly 401 and the third light emitting assembly 403 can be located on different side walls of the light emitting component 400 respectively, and the first light emitting assembly 402 can be located on the third side wall 414 of the second shell 410.

[0517] In some embodiments, the second light emitting assembly 401 can be located on the second side wall 413 of the second shell 410, and the third light emitting assembly 403 can be located on the fourth side wall 415 of the second shell 410, and the second side wall 413 of the second shell 410 and the fourth side wall 415 of the second shell 410 are connected with the third side wall 414 of the second shell 410 respectively, so that the second light emitting assembly 401 and the third light emitting assembly 403 can be arranged above and below the first light emitting assembly 402.

[0518] In some embodiments, the second light emitting assembly 401 can be located on the bottom plate 411 of the second shell 410, and the third light emitting assembly 403 can be located on the second cover plate 420, and the bottom plate 411 of the second shell 410 and the second cover plate 420 are connected with the third side wall 414 of the second shell 410 respectively, and the bottom plate 411 of the second shell 410 and the second cover plate 420 are arranged oppositely, so that the second light emitting assembly 401 and the third light emitting assembly 403 can be arranged inside and outside the first light emitting assembly 402.

[0519] As shown in FIG. 17, the light emitting path is as follows: the fourth wavelength optical signal is emitted out through the first light emitting assembly 402, and then is transmitted through the first reflective transmission sheet 4043 and the second reflective transmission sheet 4042; the fifth wavelength optical signal is emitted out through the second light emitting assembly 401, is reflected by the first reflective transmission sheet 4043, and then is transmitted through the second reflective transmission sheet 4042; and the sixth wavelength optical signal is emitted out through the third light emitting assembly 403, and then is reflected by the second reflective transmission sheet 4042.

[0520] The coupling margin of the fourth wavelength optical signal relative to the fifth wavelength optical signal and the sixth wavelength optical signal is small, and the fourth wavelength optical signal emitted out through the first light emitting assembly 402 is transmitted through the first reflective transmission sheet 4043 and the second reflective transmission sheet 4042 in turn, so as to improve the coupling efficiency.

[0521] FIG. 18 is a light path diagram of a third light emitting component according to some embodiments. As shown in FIG. 18, in some embodiments, the first light emitting component 402 and the second light emitting component 401 can be located on the third side wall 414 of the second housing 410, and the third light emitting component 403 can be located on a side wall of the second housing 410 connected to the third side wall 414. For example, the third light emitting component 403 can be located on the fourth side wall 415 of the second housing 410.

[0522] In some embodiments, the second light component 404 can include a second light component 404b, which can include a first reflective transmission sheet 4043, a second reflective transmission sheet 4042, and a fifth reflective sheet 4044. The fifth reflective sheet 4044 can be located in the light emitting direction of the second light emitting component 401 to reflect the fifth wavelength light signal emitted by the second light emitting component 401. The first reflective transmission sheet 4043 can be located in the reflected light path of the fifth reflective sheet 4044, so that the light signal emitted by the second light emitting component 401 can be incident on the first reflective transmission sheet 4043 after being reflected by the fifth reflective sheet 4044.

[0523] In some embodiments, the second light component 404b can include a fixing member 4041, and a second light transmission hole 40413 of the fixing member 4041 can be located in the reflected light path of the fifth reflective sheet 4044, so that the fifth wavelength light signal emitted by the second light emitting component 401 can be incident on the first reflective transmission sheet 4043 through the second light transmission hole 40413 after being reflected by the fifth reflective sheet.

[0524] As shown in FIG. 18, the emission light path is as follows: the fourth wavelength light signal emitted by the first light emitting component 402 is transmitted by the first reflective transmission sheet 4043 and the second reflective transmission sheet 4042 in turn. The fifth wavelength light signal emitted by the second light emitting component 401 is first reflected by the fifth reflective sheet 4044 and the first reflective transmission sheet 4043 in turn, and then transmitted by the second reflective transmission sheet 4042. The sixth wavelength light signal emitted by the third light emitting component 403 is reflected by the second reflective transmission sheet 4042. The fourth wavelength light signal, the fifth wavelength light signal, and the sixth wavelength light signal form the emission light signal. The emission light signal is transmitted by the fourth wave plate 51725 and the first wave plate 51722 in turn, and then coupled to the fiber adapter 700 by the first lens 5171.

[0525] The first light emitting component and the first light receiving component form a first light module, the second light emitting component and the first light receiving component form a second light module, and the third light emitting component and the first light receiving component form a third light module. The light receiving components of the first light module, the second light module and the third light module are the same, that is, the light paths of the emitted light signals in the light receiving components and the receiving light paths are the same. FIG. 19a is a light path diagram of the first light module according to some embodiments. FIG. 19b is a light path diagram of the second light module according to some embodiments. FIG. 19c is a light path diagram of the third light module according to some embodiments. As shown in FIGS. 19a, 19b and 19c, the emitted light signal is first transmitted through the wavelength division component 5172a and then coupled to the fiber adapter 700 through the first lens 5171.

[0526] The received light signal is first collimated through the first lens 5171 and then divided into a first wavelength light signal, a second wavelength light signal and a third wavelength light signal through the wavelength division component 5172a. The first wavelength light signal is first reflected through the first reflecting sheet 5173 and then filtered through the second filter sheet 5178 to be incident on the second light receiving component 520. The third wavelength light signal is first reflected through the second reflecting sheet 5176 and then filtered through the first filter sheet 5177 to be incident on the first light receiving component 530. The second wavelength light signal is first filtered through the third filter sheet 5174 and then reflected through the third reflecting sheet 5175 to be incident on the third light receiving component 540.

[0527] As shown in FIGS. 19a, 19b and 19c, the second light receiving component 520 and the first light receiving component 530 can be located on the second side wall 512 of the first housing 510, and the third light receiving component 540 can be located on the fourth side wall 514 of the first housing 510. The second light receiving component 520 is closer to the fiber adapter 700 than the first light receiving component 530.

[0528] As shown in FIGS. 12a, 14d and 19a, the emitting light path is as follows: the fourth wavelength light signal emitted by the first laser component 440 is transmitted through the ninth filter sheet 417 and the eighth filter sheet 416 in turn. The fifth wavelength light signal emitted by the second laser component 450 is first reflected through the ninth filter sheet 417 and then transmitted through the eighth filter sheet 416. The sixth wavelength light signal emitted by the third laser component 460 is reflected through the eighth filter sheet 416. The fourth wavelength light signal, the fifth wavelength light signal and the sixth wavelength light signal form the emitted light signal.

[0529] As shown in FIG. 12a, FIG. 17 and FIG. 19b, the side wall of the second housing 410 where the first light emitting assembly 402 is located can be arranged opposite to the first side wall 511 of the first housing 510, so that the light emitting direction of the first light emitting assembly 402 can be towards the fiber optic adapter 700. For example, the first light emitting assembly 402 can be located on the third side wall 414 of the second housing 410, and the third side wall 414 of the second housing 410 can be arranged opposite to the first side wall 511 of the first housing 510.

[0530] The side walls of the second housing 410 where the second light emitting assembly 401 and the third light emitting assembly 403 are located are not arranged opposite to the first side wall 511 of the first housing 510, so that the light emitting directions of the second light emitting assembly 401 and the third light emitting assembly 403 are not towards the fiber optic adapter 700. For example, the second light emitting assembly 401 can be located on the second side wall 413 of the second housing 410, and the third light emitting assembly 403 can be located on the fourth side wall 415 of the second housing 410, and the second side wall 413 of the second housing 410 and the fourth side wall 415 of the second housing 410 are not arranged opposite to the first side wall 511 of the first housing 510.

[0531] As shown in FIG. 12a, FIG. 17 and FIG. 19b, the light emitting path is as follows: the fourth wavelength light signal emitted by the first light emitting assembly 402 is transmitted out in turn through the first reflective transmission sheet 4043 and the second reflective transmission sheet 4042. The fifth wavelength light signal emitted by the second light emitting assembly 401 is first reflected by the first reflective transmission sheet 4043, and then transmitted out through the second reflective transmission sheet 4042. The sixth wavelength light signal emitted by the third light emitting assembly 403 is reflected out by the second reflective transmission sheet 4042. The fourth wavelength light signal, the fifth wavelength light signal and the sixth wavelength light signal form the emission light signal. The emission light signal is first transmitted through the wave division assembly 5172a, and then coupled to the fiber optic adapter 700 through the first lens 5171.

[0532] As shown in FIG. 12a, FIG. 18 and FIG. 19c, in some embodiments, the side walls of the second housing 410 where the first light emitting assembly 402 and the second light emitting assembly 401 are located are arranged opposite to the first side wall 511 of the first housing 510, so that the light emitting directions of the first light emitting assembly 402 and the second light emitting assembly 401 can be towards the fiber optic adapter 700. For example, the first light emitting assembly 402 and the second light emitting assembly 401 can be located on the third side wall 414 of the second housing 410, and the third side wall 414 of the second housing 410 can be arranged opposite to the first side wall 511 of the first housing 510.

[0533] The side wall of the second housing 410 where the third light emitting component 403 is located is not arranged opposite to the first side wall 511 of the first housing 510, so that the light emitting directions of the third light emitting component 403 are all towards the fiber optic adapter 700. For example, the third light emitting component 403 can be located on the fourth side wall 415 of the second housing 410, which is not arranged opposite to the first side wall 511 of the first housing 510.

[0534] As shown in FIG. 12a, FIG. 18 and FIG. 19c, the light emitting path is as follows: the fourth wavelength light signal emitted by the first light emitting component 402 is transmitted out in turn through the first reflective transmission sheet 4043 and the second reflective transmission sheet 4042. The fifth wavelength light signal emitted by the second light emitting component 401 is first reflected in turn through the fifth reflective sheet 4044 and the first reflective transmission sheet 4043, and then transmitted out through the second reflective transmission sheet 4042. The sixth wavelength light signal emitted by the third light emitting component 403 is reflected out through the second reflective transmission sheet 4042. The fourth wavelength light signal, the fifth wavelength light signal and the sixth wavelength light signal form the emitting light signal. The emitting light signal is transmitted through the wavelength division component 5172a, and then coupled to the fiber optic adapter 700 through the first lens 5171.

[0535] The first light emitting component and the second light receiving component form a fourth light module, the second light emitting component and the second light receiving component form a fifth light module, and the third light emitting component and the second light receiving component form a sixth light module. The light receiving components of the fourth light module, the fifth light module and the sixth light module are the same, that is, the light paths of the emitting light signal in the light receiving components and the receiving light paths are the same. FIG. 20a is a light path diagram of the fourth light module according to some embodiments. FIG. 20b is a light path diagram of the fifth light module according to some embodiments. FIG. 20c is a light path diagram of the sixth light module according to some embodiments. As shown in FIG. 20a, FIG. 20b and FIG. 20c, the emitting light signal is first transmitted through the wavelength division component 5172b, and then coupled to the fiber optic adapter 700 through the first lens 5171.

[0536] The receiving light signal is first collimated through the first lens 5171, and then divided into the first wavelength light signal, the second wavelength light signal and the third wavelength light signal through the wavelength division component 5172b. The first wavelength light signal is first reflected through the first reflective sheet 5173, and then filtered through the second filter sheet 5178 to be incident to the second light receiving component 520. The third wavelength light signal is first reflected through the second reflective sheet 5176, and then filtered through the first filter sheet 5177 to be incident to the first light receiving component 530. The second wavelength light signal is first filtered through the third filter sheet 5174, and then reflected through the third reflective sheet 5175 to be incident to the third light receiving component 540.

[0537] As shown in FIG. 20a, FIG. 20b and FIG. 20c, the second light receiving component 520 and the first light receiving component 530 can be located at the second side wall 512 of the first housing 510, and the third light receiving component 540 can be located at the fourth side wall 514 of the first housing 510, and the second light receiving component 520 is closer to the fiber adapter 700 than the first light receiving component 530.

[0538] The fourth optical module has the same optical transmitting component as the first optical module, that is, the optical transmitting component generates the same optical path of the transmitted optical signal, which has been introduced in the first optical module and will not be repeated here. The fifth optical module has the same optical transmitting component as the second optical module, that is, the optical transmitting component generates the same optical path of the transmitted optical signal, which has been introduced in the second optical module and will not be repeated here. The sixth optical module has the same optical transmitting component as the third optical module, that is, the optical transmitting component generates the same optical path of the transmitted optical signal, which has been introduced in the third optical module and will not be repeated here.

[0539] The first optical transmitting component and the third optical receiving component form the seventh optical module, the second optical transmitting component and the third optical receiving component form the eighth optical module, and the third optical transmitting component and the third optical receiving component form the ninth optical module. The optical receiving components of the seventh optical module, the eighth optical module and the ninth optical module are the same, that is, the optical path of the transmitted optical signal and the receiving optical path in the optical receiving component are the same. FIG. 21a is an optical path diagram of the seventh optical module according to some embodiments. FIG. 21b is an optical path diagram of the eighth optical module according to some embodiments. FIG. 21c is an optical path diagram of the ninth optical module according to some embodiments. As shown in FIG. 21a, FIG. 21b and FIG. 21c, the transmitted optical signal is first transmitted through the beam splitting component 5172c and then coupled to the fiber adapter 700 through the first lens 5171.

[0540] The received optical signal is first collimated through the first lens 5171 and then divided into a first wavelength optical signal, a second wavelength optical signal and a third wavelength optical signal through the beam splitting component 5172c. The first wavelength optical signal is first reflected through the first reflecting sheet 5173 and then filtered through the second filter sheet 5178 and then incident to the second light receiving component 520. The third wavelength optical signal is first reflected through the second reflecting sheet 5176 and then filtered through the first filter sheet 5177 and then incident to the first light receiving component 530. The second wavelength optical signal is first filtered through the third filter sheet 5174 and then reflected through the third reflecting sheet 5175 to the third light receiving component 540.

[0541] As shown in FIG. 21a, FIG. 21b and FIG. 21c, the second light receiving assembly 520 and the first light receiving assembly 530 can be located on the second side wall 512 of the first housing 510, the third light receiving assembly 540 can be located on the fourth side wall 514 of the first housing 510, the third light receiving assembly 540 and the first light receiving assembly 530 can be located on the same end of the wave division assembly 5172c, and the second light receiving assembly 520 and the first light receiving assembly 530 can be located on different ends of the wave division assembly 5172c.

[0542] The seventh optical module has the same light emitting component as the first optical module, i.e., the light emitting component generates the same optical path of the emitted light signal, which has been described above and will not be repeated here. The eighth optical module has the same light emitting component as the second optical module, i.e., the light emitting component generates the same optical path of the emitted light signal, which has been described above and will not be repeated here. The ninth optical module has the same light emitting component as the third optical module, i.e., the light emitting component generates the same optical path of the emitted light signal, which has been described above and will not be repeated here.

[0543] In the above optical modules, the first light receiving assembly 530, the second light receiving assembly 520 and the third light receiving assembly 540 are all vertically arranged relative to the side wall on which they are located.

[0544] The first light emitting component and the fourth light receiving component form the tenth optical module, the second light emitting component and the fourth light receiving component form the eleventh optical module, and the third light emitting component and the fourth light receiving component form the twelfth optical module. The optical receiving components of the tenth optical module, the eleventh optical module and the twelfth optical module are the same, i.e., the optical path of the emitted light signal in the optical receiving component and the receiving optical path are the same. FIG. 22a is an optical path diagram of the tenth optical module according to some embodiments. FIG. 22b is an optical path diagram of the eleventh optical module according to some embodiments. FIG. 22c is an optical path diagram of the twelfth optical module according to some embodiments. As shown in FIG. 22a, FIG. 22b and FIG. 22c, the emitted light signal is transmitted through the second filter 5186 and the light filtering assembly 5185 in turn, and then coupled to the fiber adapter 700 through the first lens 5171.

[0545] The receiving light path is as follows: the received light signal is collimated by the first lens 5171 and then incident to the light filtering assembly 5185. The third wavelength light signal in the received light signal is first reflected by the light filtering assembly 5185, then reflected by the first light filter 5184 to the first light receiving assembly 530. The first wavelength light signal in the received light signal is first transmitted by the light filtering assembly 5185, then reflected by the second light filter 5186, and finally transmitted by the third light filter 5187 to the second light receiving assembly 520. The second wavelength light signal in the received light signal is transmitted by the light filtering assembly 5185, then reflected by the second light filter 5186, and finally reflected by the third light filter 5187 to the third light receiving assembly 540.

[0546] As shown in FIGS. 22a, 22b and 22c, the second light receiving assembly 520 and the first light receiving assembly 530 can be located on the second side wall 512 of the first housing 510, and the third light receiving assembly 540 can be located on the fourth side wall 514 of the first housing 510. The first light receiving assembly 530 is vertically arranged relative to the second side wall 512 of the first housing 510.

[0547] As shown in FIGS. 22a, 22b and 22c, the third light receiving assembly 540 is arranged obliquely relative to the fourth side wall 514 of the first housing 510, i.e., the third light receiving assembly 540 is arranged obliquely relative to the side wall on which the third light receiving assembly 540 is located, so that the second wavelength light signal can be vertically incident to the third light receiving assembly 540, and the third light receiving assembly 540 can receive more second wavelength light signals.

[0548] In some embodiments, the second light receiving assembly 520 is vertically arranged relative to the second side wall 512 of the first housing 510.

[0549] In some embodiments, the second light receiving assembly 520 is arranged obliquely relative to the second side wall 512 of the first housing 510, i.e., the second light receiving assembly 520 is arranged obliquely relative to the side wall on which the second light receiving assembly 520 is located, so that the first wavelength light signal can be vertically incident to the second light receiving assembly 520, and the second light receiving assembly 520 can receive more first wavelength light signals.

[0550] The tenth light module has the same light emitting component as the first light module, i.e., the light emitting component generates the same light path of the emitted light signal, and the first light module has been described above and will not be repeated here. The eleventh light module has the same light emitting component as the second light module, i.e., the light emitting component generates the same light path of the emitted light signal, and the second light module has been described above and will not be repeated here. The twelfth light module has the same light emitting component as the third light module, i.e., the light emitting component generates the same light path of the emitted light signal, and the third light module has been described above and will not be repeated here.

[0551] The first light emitting component and the fifth light receiving component form a thirteenth optical module, the second light emitting component and the fifth light receiving component form a fourteenth optical module, and the third light emitting component and the fifth light receiving component form a fifteenth optical module. The light receiving components of the thirteenth optical module, the fourteenth optical module, and the fifteenth optical module are the same, that is, the optical paths of the transmitted light signals and the received light signals in the light receiving components are the same. FIG. 23a is an optical path diagram of the thirteenth optical module according to some embodiments. FIG. 23b is an optical path diagram of the fourteenth optical module according to some embodiments. FIG. 23c is an optical path diagram of the fifteenth optical module according to some embodiments. As shown in FIGS. 23a, 23b, and 23c, the transmitted light signal is first transmitted through the second filter 5186, then transmitted through the light filtering assembly 5185, and finally coupled to the fiber adapter 700 through the first lens 5171. The received light signal is first collimated through the first lens 5171, then divided into a third wavelength light signal and a combined light signal through the light filtering assembly 5185, the third wavelength light signal is reflected to the first light receiving component 530 through the first filter 5184. The combined light signal is reflected through the second filter 5186, then divided into a first wavelength light signal and a second wavelength light signal through the third filter 5187, the first wavelength light signal is incident to the second light receiving component 520, and the second wavelength light signal is reflected to the third light receiving component 540.

[0552] As shown in FIGS. 23a, 23b, and 23c, the second light receiving component 520 and the first light receiving component 530 can be located on the second side wall 512 of the first housing 510, and the third light receiving component 540 can be located on the fourth side wall 514 of the first housing 510. The first light receiving component 530 is vertically arranged relative to the second side wall 512 of the first housing 510, and the third light receiving component 540 is obliquely arranged relative to the fourth side wall 514 of the first housing 510.

[0553] In some embodiments, the second light receiving component 520 is vertically arranged relative to the second side wall 512 of the first housing 510.

[0554] In some embodiments, the second light receiving component 520 is obliquely arranged relative to the second side wall 512 of the first housing 510 to improve the coupling efficiency of the second light receiving component 520.

[0555] As shown in FIG. 23a, FIG. 23b and FIG. 23c, the center axis of the light emitting part 400 and the center axis of the fiber adapter 700 are staggered along the width direction of the first housing 510. The thirteenth optical module has the same light emitting part as the first optical module, i.e. the light emitting part generates the same light path of the emitted light signal, which has been described in the first optical module and will not be repeated here. The fourteenth optical module has the same light emitting part as the second optical module, i.e. the light emitting part generates the same light path of the emitted light signal, which has been described in the second optical module and will not be repeated here. The fifteenth optical module has the same light emitting part as the third optical module, i.e. the light emitting part generates the same light path of the emitted light signal, which has been described in the third optical module and will not be repeated here. The first light emitting part and the sixth light receiving part are combined to form a sixteenth optical module, the second light emitting part and the sixth light receiving part are combined to form a seventeenth optical module, and the third light emitting part and the sixth light receiving part are combined to form an eighteenth optical module. The sixteenth optical module, the seventeenth optical module and the eighteenth optical module have the same light receiving part, i.e. the light path of the emitted light signal and the receiving light path in the light receiving part are the same. FIG. 24a is a light path diagram of the sixteenth optical module according to some embodiments. FIG. 24b is a light path diagram of the seventeenth optical module according to some embodiments. FIG. 24c is a light path diagram of the eighteenth optical module according to some embodiments. As shown in FIG. 24a, FIG. 24b and FIG. 24c, the emitted light signal is transmitted through the seventh filter 5079, the sixth filter 5081 and the fourth filter 5182 in turn, and then coupled to the fiber adapter 700 through the first lens 5171.

[0556] The received light signal is first collimated by the first lens 5171, and then incident on the fourth filter 5182. The first wavelength light signal in the received light signal is first reflected by the fourth filter 5182, and then reflected by the fifth filter 5083 to the second light receiving component 520. The second wavelength light signal in the received light signal is first transmitted by the fourth filter 5182, and then transmitted by the sixth filter 5081, and finally reflected by the seventh filter 5079 to the third light receiving component 540. The third wavelength light signal in the received light signal is first transmitted by the fourth filter 5182, and then reflected by the sixth filter 5081 to the first light receiving component 530.

[0557] As shown in FIGS. 24a, 24b and 24c, the second light receiving assembly 520 and the third light receiving assembly 540 can be located on the fourth side wall 514 of the first housing 510, the second light receiving assembly 520 is closer to the fiber adapter 700 relative to the third light receiving assembly 540, the second light receiving assembly 520 and the third light receiving assembly 540 are vertically arranged relative to the fourth side wall 514 of the first housing 510, and the first light receiving assembly 530 can be located on the second side wall 512 of the first housing 510, the second light receiving assembly 520 is vertically arranged relative to the second side wall 512 of the first housing 510.

[0558] The sixteenth optical module has the same light emitting component as the first optical module, i.e., the light emitting component generates the same optical path of the emitted light signal, and the first optical module has been described above, which will not be repeated here. The seventeenth optical module has the same light emitting component as the second optical module, i.e., the light emitting component generates the same optical path of the emitted light signal, and the second optical module has been described above, which will not be repeated here. The eighteenth optical module has the same light emitting component as the third optical module, i.e., the light emitting component generates the same optical path of the emitted light signal, and the third optical module has been described above, which will not be repeated here. The first light emitting component and the seventh light receiving component are combined to form the nineteenth optical module, the second light emitting component and the seventh light receiving component are combined to form the twentieth optical module, and the third light emitting component and the seventh light receiving component are combined to form the twenty-first optical module, and the light receiving components of the nineteenth optical module, the twentieth optical module and the twenty-first optical module are the same, i.e., the optical path of the emitted light signal in the light receiving component and the receiving optical path are the same. FIG. 25a is an optical path diagram of the nineteenth optical module according to some embodiments. FIG. 25b is an optical path diagram of the twentieth optical module according to some embodiments. FIG. 25c is an optical path diagram of the twenty-first optical module according to some embodiments. As shown in FIGS. 25a, 25b and 25c, the emitted light signal is first transmitted through the beam splitting assembly 5172a and then coupled to the fiber adapter 700 through the first lens 5171.

[0559] The received light signal is first collimated through the first lens 5171, then divided into the first wavelength light signal, the second wavelength light signal and the third wavelength light signal through the beam splitting assembly 5172a. The first wavelength light signal is first reflected by the fourth reflecting sheet 5188, then filtered by the second filter sheet 5178, and finally coupled to the first light receiving chip of the fourth light receiving assembly 560 through the third lens 563. The second wavelength light signal is first reflected by the fourth reflecting sheet 5188, then filtered by the third filter sheet 5174, and then coupled to the second light receiving chip of the fourth light receiving assembly 560 through the fourth lens 564. The third wavelength light signal is first reflected by the second reflecting sheet 5176, then filtered by the first filter sheet 5177, and then incident to the first light receiving assembly 530.

[0560] As shown in Figures 25a, 25b, and 25c, the first optical receiving component 530 and the fourth optical receiving component 560 can be located on the second sidewall 512 of the first housing 510. The nineteenth type of optical module has the same optical emitting component as the first type of optical module, meaning the optical path for generating the emitted optical signal is the same. The first type of optical module has already been described and will not be repeated here. The twentieth type of optical module has the same optical emitting component as the second type of optical module, meaning the optical path for generating the emitted optical signal is the same. The second type of optical module has already been described and will not be repeated here. The twenty-first type of optical module has the same optical emitting component as the third type of optical module, meaning the optical path for generating the emitted optical signal is the same. The third type of optical module has already been described and will not be repeated here.

[0561] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure, and are not intended to limit them. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this disclosure.

Claims

1. An optical module, comprising: an optical receiving component, a first end of which is connected with a fiber adapter, and a second end of which is connected with an optical transmitting component, an emitting direction of the optical transmitting component being towards the fiber adapter; the optical receiving component comprising three optical receiving assemblies for transmitting optical signals of different wavelengths; the optical receiving component further comprising a wavelength separating assembly, the optical receiving component receiving optical signals of first, second and third wavelengths from the fiber adapter and emitting the first, second and third wavelength optical signals after being reflected by the wavelength separating assembly, the first, second and third wavelength optical signals being incident on corresponding optical receiving assemblies, wherein the first wavelength optical signal comprises the optical signal of the first wavelength, the second wavelength optical signal comprises the optical signal of the second wavelength, and the third wavelength optical signal comprises the optical signal of the third wavelength; or the optical receiving component further comprising a first optical assembly, the first optical assembly comprising a filter assembly, a first filter, a second filter and a third filter, the filter assembly being located in the emitting direction of the fiber adapter and separating the third wavelength optical signal from the optical signals, the first filter being located in a first emitting light path of the filter assembly and reflecting the third wavelength optical signal, a first optical receiving assembly being located in a reflected light path of the first filter, the second filter being located in a second emitting light path of the filter assembly and reflecting the first and second wavelength optical signals, the third filter being located in a reflected light path of the second filter and transmitting the first wavelength optical signal and reflecting the second wavelength optical signal, a second optical receiving assembly being located in a transmitted light path of the third filter, and a third optical receiving assembly being located in a reflected light path of the third filter.

2. The optical module according to claim 1, wherein a first end of the wavelength separating assembly corresponding to a first end of the optical receiving component, and a second end of the wavelength separating assembly corresponding to a second end of the optical receiving component, the optical transmitting component emitting optical signals incident on a second end of the wavelength separating assembly and emitting the optical signals from a first end of the wavelength separating assembly; or the first optical assembly being located between the optical transmitting component and the fiber adapter.

3. The optical module according to claim 2, wherein the three optical receiving assemblies comprising a first optical receiving assembly, a second optical receiving assembly and a third optical receiving assembly, the first and second optical receiving assemblies being located on one side of the optical receiving component, and the third optical receiving assembly being located on the other side of the optical receiving component.

4. The optical module according to claim 3, wherein The first end of the wave division assembly has a first light exit, the second end of the wave division assembly has a second light exit and a third light exit, the first wavelength light signal is emitted from the second light exit and then enters the second light receiving assembly, the third wavelength light signal is emitted from the first light exit and then enters the first light receiving assembly, and the second wavelength light signal is emitted from the third light exit and then enters the third light receiving assembly.

5. The optical module according to claim 3, wherein The wave division assembly comprises a first substrate, a first end surface of the first substrate is arranged corresponding to the first end of the light receiving component, a second end surface of the first substrate is arranged corresponding to the second end of the light receiving component, the first end surface of the first substrate is sequentially provided with a first wave plate, a second wave plate and a third wave plate, the second end surface of the first substrate is sequentially provided with a fourth wave plate, a fifth wave plate and a sixth wave plate, the first wave plate and the fourth wave plate are oppositely arranged, the second wave plate and the fifth wave plate are oppositely arranged, and the third wave plate and the sixth wave plate are oppositely arranged. The emitted light signal emitted by the light emitting component is transmitted to the fiber adapter through the fourth wave plate and the first wave plate in sequence; the received light signal emitted by the fiber adapter is transmitted through the first wave plate, reflected by the fourth wave plate and the second wave plate, reflected and transmitted by the fifth wave plate, reflected by the fifth wave plate and then reflected and transmitted by the third wave plate, and finally transmitted by the sixth wave plate after being reflected by the third wave plate, so that the first wavelength light signal is emitted from the fifth wave plate, the third wavelength light signal is emitted from the third wave plate, and the second wavelength light signal is emitted from the sixth wave plate.

6. The optical module of claim 5, wherein the light receiving component further comprises a first reflecting sheet, a second reflecting sheet and a third reflecting sheet. The first reflecting sheet is located between the fifth wave plate and the second light receiving assembly, and faces the fifth wave plate and the second light receiving assembly, so that the first wavelength light signal is reflected to the second light receiving assembly. The second reflecting sheet is located between the third wave plate and the first light receiving assembly, and faces the third wave plate and the first light receiving assembly, so that the third wavelength light signal is reflected to the first light receiving assembly. The third reflecting sheet is located between the sixth wave plate and the third light receiving assembly, and faces the sixth wave plate and the third light receiving assembly, so that the second wavelength light signal is reflected to the third light receiving assembly. The light receiving component further comprises a first filter sheet, a second filter sheet and a third filter sheet, the first filter sheet is located on the reflected light path of the second reflecting sheet, the second filter sheet is located on the reflected light path of the first reflecting sheet, and the third filter sheet is located on the exit light path of the sixth wave plate. The first filter sheet is attached to the top of the first light receiving assembly, the second filter sheet is attached to the top of the second light receiving assembly, and the third filter sheet is connected with the third reflecting sheet.

7. The optical module according to claim 6, wherein The first light receiving assembly, the second light receiving assembly and the third light receiving assembly each comprise a receiving tube cap and a receiving tube base, the receiving tube cap is arranged on the receiving tube base, and a light receiving chip is arranged on the receiving tube base to receive a light signal; The receiving tube cap of the first light receiving assembly has a lens, the lens protrudes from the receiving tube cap, a support is arranged on the receiving tube cap, the support has a first light transmission hole, the first filter is arranged on the support, and the first filter blocks the first light transmission hole, so that the light signal is filtered by the first filter and then incident on the first light receiving assembly; The receiving tube cap of the second light receiving assembly has a lens, the lens does not protrude from the receiving tube cap, and a second filter is arranged on the receiving tube cap, the second filter covers the second lens, so that the light signal is filtered by the second filter and then incident on the second light receiving assembly.

8. The optical module according to claim 3, wherein The first end of the wave division assembly faces the fiber optic adapter, and the second end of the wave division assembly faces the light emitting component.

9. The optical module according to claim 8, wherein The first end of the wave division assembly has a first light emitting position, the second end of the wave division assembly has a second light emitting position and a third light emitting position, the second light receiving assembly is located in the light emitting direction of the second light emitting position, the first light receiving assembly is located in the light emitting direction of the first light emitting position, and the third light receiving assembly is located in the light emitting direction of the third light emitting position.

10. The optical module according to claim 9, wherein The wave division assembly comprises a first substrate, a first end surface of the first substrate is arranged correspondingly to the first end of the light receiving component, a second end surface of the first substrate is arranged correspondingly to the second end of the light receiving component, the first end surface of the first substrate is sequentially provided with a first wave plate, a second wave plate and a third wave plate, the second end surface of the first substrate is sequentially provided with a fourth wave plate, a fifth wave plate and a sixth wave plate, the first wave plate and the fourth wave plate are oppositely arranged, the second wave plate and the fifth wave plate are oppositely arranged, and the third wave plate and the sixth wave plate are oppositely arranged; The emitted light signal of the light emitting component is transmitted to the fiber optic adapter through the fourth wave plate and the first wave plate in sequence; the received light signal transmitted by the fiber optic adapter is transmitted through the first wave plate, reflected by the fourth wave plate, reflected and transmitted by the second wave plate, reflected by the second wave plate and then reflected and transmitted by the fifth wave plate, reflected by the fifth wave plate and then reflected by the third wave plate, and transmitted by the sixth wave plate, so that the first wavelength light signal is emitted through the fifth wave plate, the third wavelength light signal is emitted through the second wave plate, and the second wavelength light signal is emitted through the sixth wave plate.

11. The optical module of claim 8, wherein, The wave division assembly comprises a first substrate, a first end surface of the first substrate is arranged correspondingly to the first end of the light receiving component, a second end surface of the first substrate is arranged correspondingly to the second end of the light receiving component, the first end surface of the first substrate is sequentially provided with a first wave plate, a second wave plate, a third wave plate and a seventh wave plate, the second end surface of the first substrate is sequentially provided with a fourth wave plate, a fifth wave plate and a sixth wave plate, the first wave plate and the fourth wave plate are oppositely arranged, the second wave plate and the fifth wave plate are oppositely arranged, and the third wave plate and the sixth wave plate are oppositely arranged; The emitted light signal emitted by the light emitting component is transmitted to the fiber adapter in sequence through the fourth wave plate and the first wave plate; the received light signal transmitted by the fiber adapter is transmitted in sequence through the first wave plate, reflected by the fourth wave plate, reflected and transmitted by the second wave plate, reflected by the second wave plate and then reflected and transmitted by the fifth wave plate and the third wave plate, reflected and transmitted by the sixth wave plate, reflected by the sixth wave plate and then transmitted by the seventh wave plate, so that the first wavelength light signal is emitted through the sixth wave plate, the third wavelength light signal is emitted through the second wave plate, and the second wavelength light signal is emitted through the seventh wave plate.

12. The optical module of claim 8, wherein, The light emitting component comprises: A first light emitting assembly, whose light emitting direction is towards the fiber adapter; A second light emitting assembly; A third light emitting assembly, which is located on a different side wall of the light emitting component from the first light emitting assembly; the side wall where the third light emitting assembly is located is connected to the side wall where the first light emitting assembly is located. The second light emitting assembly and the first light emitting assembly are located on the same side wall of the light emitting component, or the second light emitting assembly and the first light emitting assembly are located on different side walls of the light emitting component, and the side wall where the second light emitting assembly is located is connected to the side wall where the first light emitting assembly is located.

13. The optical module of claim 8, wherein the light receiving component further comprises: A first reflecting sheet located in the transmission direction of the first wavelength light signal emitted by the wave division assembly; The second light receiving assembly is located on the reflected light path of the first reflecting sheet; A second reflecting sheet located in the transmission direction of the third wavelength light signal emitted by the wave division assembly; the first light receiving assembly is located on the reflected light path of the second reflecting sheet; A third reflecting sheet located in the transmission direction of the second wavelength light signal emitted by the wave division assembly; the third light receiving assembly is located on the reflected light path of the third reflecting sheet.

14. The optical module of claim 8, wherein the light receiving component further comprises a fourth light receiving assembly, which comprises: A first light receiving chip; A second light receiving chip, which receives a received light signal of a different wavelength from the first light receiving chip; The first end of the wave division assembly is towards the fiber adapter, and the second end is towards the light emitting component.

15. The optical module of claim 14, wherein the light receiving component further comprises: A second reflecting sheet located in the transmission direction of the third wavelength light signal emitted by the wave division assembly; The first light receiving assembly is located on the reflected light path of the second reflecting sheet; A fourth reflecting sheet located in the transmission direction of the first wavelength light signal and the second wavelength light signal emitted by the wave division assembly; the fourth light receiving assembly can be located on the reflected light path of the fourth reflecting sheet.

16. The optical module of claim 14, wherein, The first light receiving assembly and the fourth light receiving assembly are located on the same side of the light receiving component, the first light receiving assembly is farther away from the light emitting component than the fourth light receiving assembly, and the first light receiving chip is closer to the light emitting component than the second light receiving chip; Or, The first light receiving component and the fourth light receiving component are located on different sides of the light receiving part, the first light receiving component is farther away from the light emitting part than the fourth light receiving component, and the second light receiving chip is closer to the light emitting part than the first light receiving chip.

17. The optical module of claim 3, wherein the light receiving part further comprises a first housing. The second light receiving component and the first light receiving component are located on one side wall of the first housing, and the third light receiving component is located on another side wall of the first housing.

18. The optical module of claim 17, wherein, The third light receiving component is obliquely arranged relative to the side wall on which the third light receiving component is located, and the second light receiving component is obliquely arranged relative to the side wall on which the second light receiving component is located.

19. The optical module of claim 17, wherein, The distance between the central axis of the light outlet of the light emitting part and the central axis of the fiber adapter along the width direction of the light receiving part is less than a preset value, and the light filtering component is a light filter.

20. The optical module of claim 17, wherein, The distance between the central axis of the light outlet of the light emitting part and the central axis of the fiber adapter along the width direction of the light receiving part is greater than a preset value, and the light filtering component comprises: a second substrate, a first end of which is arranged corresponding to the first end of the light receiving part, and a second end of which is arranged corresponding to the second end of the light receiving part; an eighth wave plate connected to the first end of the second substrate; a ninth wave plate connected to the first end of the second substrate and located in the light emitting direction of the fiber adapter; a tenth wave plate connected to the second end of the second substrate and arranged opposite to the eighth wave plate and located in the transmission direction of the second light filter; an eleventh wave plate connected to the second end of the second substrate and arranged opposite to the ninth wave plate and located in the reflection light path of the eighth wave plate; and the ninth wave plate is located in the reflection light path of the eleventh wave plate.

21. The optical module of claim 20, wherein, The first light filter is located in the transmission light path of the eleventh wave plate.

22. The optical module of claim 20, wherein, The ninth wave plate and the tenth wave plate are both arranged perpendicular to the central axis of the light outlet of the light emitting part, and the eighth wave plate and the eleventh wave plate are both arranged obliquely relative to the central axis of the light outlet of the light emitting part.

23. The optical module of claim 21, wherein, The light emitting part comprises: a first light emitting component, the light emitting direction of which is towards the fiber adapter; a second light emitting component; a third light emitting component, which is located on a different side wall of the light emitting part from the first light emitting component; and the side wall on which the third light emitting component is located is connected to the side wall on which the first light emitting component is located. The second light emitting component and the first light emitting component are located on the same side wall of the light emitting part, or the second light emitting component and the first light emitting component are located on different side walls of the light emitting part, and the side wall on which the second light emitting component is located is connected to the side wall on which the first light emitting component is located.

24. An optical module, comprising: a light receiving part, a first end of which is connected to a fiber adapter, and a second end of which is connected to a light emitting part; the light emitting direction of the light emitting part is towards the fiber adapter; The light receiving part comprises: a first housing; a first light receiving component, which is located on one side wall of the first housing; a second light receiving component; a third light receiving assembly located at another side wall of the first housing; a first light assembly located between the light emitting component and the fiber optic adapter; the first light assembly comprises: a fourth filter located in a light emitting direction of the fiber optic adapter, for receiving reflection of a first wavelength light signal in the light signal, and for transmitting a second wavelength light signal and a third wavelength light signal in the light signal; a fifth filter located in a reflection light path of the fourth filter, for reflection of the first wavelength light signal; the second light receiving assembly is located in a reflection light path of the fifth filter; a sixth filter located in a transmission light path of the fourth filter, for transmission of the second wavelength light signal and reflection of the third wavelength light signal; the first light receiving assembly is located in a reflection light path of the sixth filter; a seventh filter located in the transmission light path of the fourth filter, for reflection of the second wavelength light signal and transmission of the third wavelength light signal; the third light receiving assembly is located in a reflection light path of the seventh filter; the emitting light signal is transmitted to the fiber optic adapter through the seventh filter, the sixth filter and the fourth filter.

25. The optical module of claim 24, wherein, the sixth filter is located between the seventh filter and the fourth filter, so that the emitting light signal is transmitted to the fiber optic adapter through the seventh filter, the sixth filter and the fourth filter in sequence; alternatively, the seventh filter is located between the sixth filter and the fourth filter, so that the emitting light signal is transmitted to the fiber optic adapter through the sixth filter, the seventh filter and the fourth filter in sequence.

26. The optical module of claim 24, wherein, the fourth filter is located between the fifth filter and the second light receiving assembly.

27. An optical module, comprising: a light receiving component comprising a first housing, a first light receiving assembly, a second light receiving assembly and a third light receiving assembly, the first housing comprising a bottom plate, and a first side wall, a second side wall, a third side wall and a fourth side wall connected in sequence, the first side wall being connected with a fiber optic adapter, the second side wall being connected with the first light receiving assembly and the second light receiving assembly respectively, the third side wall being connected with a light emitting component, the fourth side wall being connected with the third light receiving assembly, a light emitting direction of the light emitting component being towards the fiber optic adapter; the light receiving component further comprises a first cover plate, the first cover plate covering the first housing to form a first cavity; The first cavity is provided with a wave division assembly, which is arranged along the length of the second side wall, so that the wave division assembly is arranged along the length direction of the first shell; the emission light signal emitted by the light emitting component is incident to the emission light entrance of the second end of the wave division assembly, and is emitted through the receiving light entrance of the first end of the wave division assembly; the receiving light signal emitted by the fiber adapter and including the first wavelength, the second wavelength and the third wavelength is incident to the receiving light entrance of the first end of the wave division assembly, is reflected through the emission light entrance of the second end of the wave division assembly, and is then divided into the first wavelength light signal, the second wavelength light signal and the third wavelength light signal, and the first wavelength light signal, the second wavelength light signal and the third wavelength light signal are respectively incident to the corresponding light receiving assembly, wherein the first wavelength light signal includes the receiving light signal of the first wavelength, the second wavelength light signal includes the receiving light signal of the second wavelength, and the third wavelength light signal includes the receiving light signal of the third wavelength.

28. The optical module of claim 27, wherein, The second light receiving assembly and the first light receiving assembly are connected with the second side wall; and the third light receiving assembly is connected with the fourth side wall.

29. The optical module of claim 27, wherein, The first side wall has a first connecting hole, the third side wall has a second connecting hole, the second side wall has a fourth connecting hole and a fifth connecting hole, and the fourth side wall has a third connecting hole, the third connecting hole is connected with the third light receiving assembly, the fourth connecting hole is connected with the second light receiving assembly, and the fifth connecting hole is connected with the first light receiving assembly. The first connecting hole, the second connecting hole, the third connecting hole, the fourth connecting hole and the fifth connecting hole are respectively connected with the accommodating cavity of the first shell, and the accommodating cavity is provided with a first lens, which is located between the first connecting hole and the first wave plate.

30. The optical module of claim 29, wherein, The fourth connecting hole is closer to the light emitting component than the fifth connecting hole, and the fourth connecting hole is closer to the fourth wave plate than the third connecting hole.

31. The optical module of claim 29, wherein, The second side wall has a first step, so that the depth of the fourth connecting hole is smaller than the depth of the fifth connecting hole.

32. The optical module of claim 27, wherein, The fourth side wall has a second step. The fourth side wall has a second step.

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