Optical module

Abstract

An optical module (200), comprising a wavelength division assembly (5172b), a first reflective sheet (5713), a first reflector (5176a) and a second reflector (5174a), wherein the wavelength division assembly (5172b) comprises a first substrate (51721), a first wave plate (51722), a second wave plate (51723b), a third wave plate (51724b), a fourth wave plate (51725b), a fifth wave plate (51726b), a sixth wave plate (51727b), a seventh wave plate (51728b) and an eighth wave plate (51729b), the fifth wave plate (51726b) being located on a transmission optical path of the first wave plate (51722), the second wave plate (51723b) being located on a reflection optical path of the fifth wave plate (51726b), the sixth wave plate (51727b) being located on a reflection optical path of the second wave plate (51723b), the third wave plate (51724b) being located on a reflection optical path of the sixth wave plate (51727b), the seventh wave plate (51728b) being located on a reflection optical path of the third wave plate (51724b), the fourth wave plate (51725b) being located on a reflection optical path of the seventh wave plate (51728b), and the eighth wave plate (51729b) being located on a reflection optical path of the fourth wave plate (51725b); the first reflective sheet (5713) is located between the second wave plate (51723b) and a second light-receiving assembly (520); the first reflector (5176a) is located between the seventh wave plate (51728b) and a first light-receiving assembly (530); the second reflector (5174a) is located between the eighth wave plate (51729b) and a third light-receiving assembly (540); and a received optical signal is reflected and transmitted between the plurality of wave plates, so as to achieve wavelength division.

Description

An optical module

[0001] The present disclosure claims priority to the Chinese patent application No. 2024107645203 filed on June 13, 2024, to the Chinese patent application No. 2024107656867 filed on June 13, 2024, and to the Chinese patent application No. 2025106379880 filed on May 16, 2025, the contents of which are incorporated herein by reference in their entirety. TECHNICAL FIELD

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

[0003] With the development of new business and application modes such as cloud computing, mobile Internet, and video, the development and progress of optical communication technology become increasingly important. In optical communication technology, an optical module is a tool for converting optical signals and electrical signals, and is one of the key devices in optical communication equipment. With the development of optical communication technology, the transmission rate of the optical module is continuously improved.

[0004] Currently, to improve the transmission rate of the optical module, multiple transmission channels are provided in the optical module, i.e., the transmission capacity is improved by multi-channel design in the optical module. When the number of transmission channels of the optical module increases, the number of devices involved also increases, which puts higher requirements on the packaging of the optical module. SUMMARY

[0005] The present disclosure provides an optical module, comprising:

[0006] A third housing, comprising:

[0007] A third bottom plate, forming a third connecting surface;

[0008] A first side plate, connected to one side of the third bottom plate at the bottom, forming a fourth connecting hole; the fourth connecting hole is connected to a second optical receiving assembly;

[0009] A second side plate, connected to the other side of the third bottom plate at the bottom, forming a fifth connecting hole and a third connecting hole; the fifth connecting hole is connected to a first optical receiving assembly, and the third connecting hole is connected to a third optical receiving assembly;

[0010] A wave division assembly, provided on the third bottom plate;

[0011] A first laser assembly, a second laser assembly, and a third laser assembly, located on the third bottom plate;

[0012] A sealing window is connected to the third connecting surface at the bottom and connected to the first side plate and the second side plate at the side, and is located on the transmission path of the first laser assembly, the second laser assembly and the third laser assembly to the wave division assembly;

[0013] A third cover plate is connected to one end of the first side plate and one end of the second side plate, and is located above the wave division assembly;

[0014] An adapter ring is connected to the other end of the first side plate, the other end of the second side plate and the top of the sealing window at the bottom;

[0015] A fourth cover plate is connected to the top of the adapter ring. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present disclosure, the following will briefly introduce the drawings needed to be used in some embodiments of the present disclosure. Obviously, the drawings in the following description are only some drawings of the embodiments of the present disclosure, and other drawings can also be obtained by those skilled in the art according to these drawings. In addition, the drawings in the following description can be regarded as schematic diagrams, and are not limited to the actual size, actual process, actual time sequence, etc. of the products, methods, signals, etc. involved in the embodiments of the present disclosure.

[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] Fig. 4 is an exploded view of an optical module according to some embodiments;

[0021] Fig. 5 is an internal structure diagram of an optical module according to some embodiments;

[0022] Fig. 6 is an internal structure exploded view of an optical module according to some embodiments;

[0023] Fig. 7 is a partial structure diagram of an optical module according to some embodiments;

[0024] Fig. 8 is a partial structure exploded view of an optical module according to some embodiments;

[0025] Fig. 9 is a structure diagram of a first cavity according to some embodiments;

[0026] Fig. 10 is an assembly diagram of a first optical receiving assembly, a bracket and a first filter according to some embodiments;

[0027] FIG. 11 is a sectional view of a first light receiving assembly with a holder and a first filter according to some embodiments;

[0028] FIG. 12 is an exploded view of a first light receiving assembly with a holder and a first filter according to some embodiments;

[0029] FIG. 13 is a structure diagram one of a holder according to some embodiments;

[0030] FIG. 14 is a structure diagram two of a holder according to some embodiments;

[0031] FIG. 15 is an exploded view of a first cavity according to some embodiments;

[0032] FIG. 16 is an exploded view of a first housing and a light receiving assembly according to some embodiments;

[0033] FIG. 17 is an optical path diagram of a light receiving assembly according to some embodiments;

[0034] FIG. 18 is a structure diagram one of a first housing according to some embodiments;

[0035] FIG. 19 is a structure diagram two of a first housing according to some embodiments;

[0036] FIG. 20 is a sectional view of a first housing according to some embodiments;

[0037] FIG. 21 is a sectional view of a light receiving component according to some embodiments;

[0038] FIG. 22 is a sectional view two of a light receiving component according to some embodiments;

[0039] FIG. 23 is a structure diagram one of an internal structure of another optical module according to some embodiments;

[0040] FIG. 24 is a structure diagram two of an internal structure of another optical module according to some embodiments;

[0041] FIG. 25 is an exploded view one of an internal structure of another optical module according to some embodiments;

[0042] FIG. 26 is an exploded view two of an internal structure of another optical module according to some embodiments;

[0043] FIG. 27 is an exploded view of another light receiving component according to some embodiments;

[0044] FIG. 28 is a light emission path diagram according to some embodiments;

[0045] FIG. 29 is a structure diagram of another light emission component according to some embodiments;

[0046] Figure 30 is an assembly view of another optical transceiver component and fiber optic adapter, according to some embodiments;

[0047] Figure 31 is an exploded view one of another optical transmitting component, according to some embodiments;

[0048] Figure 32 is an exploded view two of another optical transmitting component, according to some embodiments;

[0049] Figure 33 is an exploded view of an optical transmitting assembly, according to some embodiments;

[0050] Figure 34 is a cross-sectional view of an optical transmitting assembly, according to some embodiments;

[0051] Figure 35 is another optical transmitting path diagram, according to some embodiments;

[0052] Figure 36 is a partial structure view one of another optical module, according to some embodiments;

[0053] Figure 37 is a partial structure exploded view one of another optical module, according to some embodiments;

[0054] Figure 38 is a partial structure view two of another optical module, according to some embodiments;

[0055] Figure 39 is a partial structure exploded view two of another optical module, according to some embodiments;

[0056] Figure 40 is a structure view one of a third housing, according to some embodiments;

[0057] Figure 41 is a structure view two of a third housing, according to some embodiments;

[0058] Figure 42 is a cross-sectional view of a third housing, according to some embodiments;

[0059] Figure 43 is an exploded view of a third housing and cover plate, according to some embodiments;

[0060] Figure 44 is a cross-sectional view of a third housing and cover plate, according to some embodiments;

[0061] Figure 45 is a structure view of another wave division assembly, according to some embodiments;

[0062] Figure 46 is an internal structure cross-sectional view of another optical module, according to some embodiments;

[0063] Figure 47 is a device layout view within a third housing, according to some embodiments;

[0064] Figure 48 is an exploded view of another optical receiving component, according to some embodiments;

[0065] FIG. 49 is a partially exploded view of another light receiving component, according to some embodiments;

[0066] FIG. 50 is a partial structural view of another light receiving component, according to some embodiments;

[0067] FIG. 51 is an optical path diagram of another light receiving component, according to some embodiments. DETAILED DESCRIPTION

[0068] 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.

[0069] 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.

[0070] 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.

[0071] 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.

[0072] 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.

[0073] 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.

[0074] 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.

[0075] The host computer 100 includes a housing substantially in the shape of a rectangular cuboid, and an optical module interface 102 disposed on the housing. The optical module interface 102 is configured to access the optical module 200, so as to establish a one-way or two-way electrical signal connection between the host computer 100 and the optical module 200.

[0076] The host computer 100 further comprises an external electrical interface configured to access an electrical signal network. For example, the external electrical interface comprises a Universal Serial Bus (USB) interface or a network cable interface 104 configured to access a network cable 103 to establish a unidirectional or bidirectional 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, and 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.

[0077] In addition to the optical network terminal, the host computer 100 further comprises an optical line terminal (OLT), an optical network terminal (ONT), or a data center server, etc.

[0078] 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.

[0079] 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 establish 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 establish a bidirectional optical signal connection.

[0080] FIG. 3 is a structural diagram of an optical module according to some embodiments, and FIG. 4 is an exploded view of an optical module according to some embodiments. As shown in FIGS. 3 and 4, 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.

[0081] 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.

[0082] 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.

[0083] 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 and the two lower side plates 2022 are combined to achieve that the upper shell 201 is covered on the lower shell 202.

[0084] 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 extend from the electrical port and 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.

[0085] The assembly of the upper shell 201 and the lower shell 202 facilitates the installation of the circuit board 300, the optical transmitting component 400, and the optical receiving component 500 into the shells, and the shells can protect the above-mentioned devices. In addition, when the circuit board 300, the optical transmitting component 400, and the optical receiving component 500 are assembled, the positioning components, heat dissipation components, and electromagnetic shielding components of these devices can be easily arranged, which is beneficial for automated production.

[0086] In some embodiments, the upper shell 201 and the lower shell 202 are made of metal materials, which is beneficial for electromagnetic shielding and heat dissipation.

[0087] In some embodiments, the optical module 200 further includes an unlocking component 600 located outside the shell of the optical module 200. The unlocking component 600 is configured to achieve 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.

[0088] 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 clamping component of the unlocking component 600 fixes the optical module 200 in the cage 106; 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, to release the fixation between the optical module 200 and the host computer, so that the optical module 200 can be pulled out of the cage 106.

[0089] 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.

[0090] 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.

[0091] 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 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. 4) 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 requiring a large number of pins. 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.

[0092] At least one of the optical transmitting component 400 or the optical receiving component 500 is located on the side of the circuit board 300 away from the gold finger.

[0093] In some embodiments, the optical transmitting component 400 and the optical 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.

[0094] 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 of the circuit board 300.

[0095] 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.

[0096] 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.

[0097] In some embodiments, the light receiving component 500 can receive a plurality of wavelengths of received light signals. For example, the light receiving component 500 receives three wavelengths of received light signals, and the three wavelengths of received light signals have 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 first wavelength of received light signal, the second wavelength light signal includes a second wavelength of received light signal, and the third wavelength light signal includes a third wavelength of received light signal.

[0098] 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.

[0099] 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.

[0100] 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.

[0101] In some embodiments, the light emitting component 400 can generate a plurality of wavelengths of light signals. The plurality of wavelengths of light signals can be combined into one beam of emitted light signal, so that the number of emitted light signals emitted by the light emitting component 400 is one beam. For example, the light emitting component 400 can generate three wavelengths of light signals, and the three wavelengths of light signals have different rates, such as a fourth wavelength light signal, a fifth wavelength light signal, and a sixth wavelength light signal having different rates.

[0102] In some embodiments, the fourth wavelength optical signal has a wavelength range of 1340-1344 nm, such as a wavelength of 1342 nm; the fifth wavelength optical signal has a wavelength range of 1575-1580 nm, such as a wavelength of 1577 nm; and the sixth wavelength optical signal has a wavelength range of 1480-1500 nm, such as a wavelength of 1490 nm.

[0103] As shown in FIG. 4, 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 optical 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.

[0104] 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 both ends of the light receiving component 500 along the length direction of the light receiving component 500.

[0105] 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. The light emitting direction of the light emitting component 400 is towards the fiber adapter 700, so that the emitted optical 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 optical signal and the downlink optical signal of the optical module share the optical fiber 101.

[0106] In some embodiments, among the optical signals incident to the light receiving component 500, the number of light beams of the emitted optical signal (which can be referred to as an emitted light beam) emitted by the light emitting component 400 is less than the number of light beams of the received optical signal (which can be referred to as a received light beam) externally input. For example, among the optical signals incident to the light receiving component 500, the number of light beams of the emitted optical signal (i.e., the emitted light beam) emitted by the light emitting component 400 is at least two less than the number of light beams of the received optical signal (i.e., the received light beam) externally input, so as to reduce the difficulty of light splitting of the optical signal in the light receiving component 500.

[0107] FIG. 5 is a diagram of the internal structure of an optical module according to some embodiments, and FIG. 6 is a diagram of the internal structure of an optical module according to some embodiments. In some embodiments, as shown in FIGS. 4, 5 and 6, the optical module can include a flexible circuit board set 900, which is electrically connected to the light emitting component 400, the light receiving component 500 and the circuit board 300.

[0108] 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 at a sidewall of the light emitting component 400. The first electrical input end can be located at a sidewall of the light emitting component 400 close to the circuit board 300.

[0109] 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 at a sidewall of the light emitting component 400. The second electrical input end can be located at a different sidewall of the light emitting component 400 from the first electrical input end.

[0110] In some embodiments, the sidewall where the second electrical input end is located can be adjacent to the sidewall where the first electrical input end is located. For example, the first electrical input end can be located at a third sidewall of the light emitting component 400, and the second electrical input end can be located at a fourth sidewall of the light emitting component 400, the third sidewall and the fourth sidewall can be adjacent to each other, and the third sidewall and the fourth sidewall can be connected.

[0111] In some embodiments, the light receiving component 500 and the circuit board 300 can be connected through the flexible circuit board set 900. For example, the electrical input end of the light receiving component 500 and the circuit board 300 can be connected through the flexible circuit board set 900.

[0112] 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.

[0113] 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 a sidewall of the light receiving component 500.

[0114] 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 a sidewall of the light receiving component 500.

[0115] 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 a sidewall of the light receiving component 500.

[0116] 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 a sidewall of the light receiving component 500, and the other electrical input end can be located at another sidewall 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 can be located at a fourth sidewall of the light receiving component 500, and the second electrical input end and the third electrical input end can be located at a second sidewall of the light receiving component 500.

[0117] In some embodiments, the first, second, and third electrical input terminals are on the same side wall.

[0118] FIG. 7 is a partial structural diagram of an optical module according to some embodiments, FIG. 8 is a partial structural exploded diagram of the optical module according to some embodiments, and FIG. 9 is a structural diagram of a first cavity according to some embodiments. As shown in FIGS. 7-9, 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.

[0119] 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 emitted 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.

[0120] 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 the 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.

[0121] In some embodiments, the light receiving component 500 can include a first light receiving assembly 530. Exemplarily, the first light receiving assembly 530 can receive a third wavelength light signal.

[0122] In some embodiments, the light receiving component 500 can include a second light receiving assembly 520. Exemplarily, the second light receiving assembly 520 can receive a first wavelength light signal.

[0123] In some embodiments, the light receiving component 500 can include a third light receiving assembly 540. Exemplarily, the third light receiving assembly 540 can receive a second wavelength light signal.

[0124] In some embodiments, the light receiving component 500 can include a first light receiving assembly 530, a second light receiving assembly 520, and a third light receiving assembly 540, so that the light receiving component 500 can receive light signals of three wavelengths, and the light signals of the three wavelengths can have different rates.

[0125] In some embodiments, the first light receiving component 530, the second light receiving component 520 and the third light receiving component 540 can adopt a coaxial package. Illustratively, the receiving optical axes of the first light receiving component 530, the second light receiving component 520 and the third light receiving component 540 are parallel to each other. That is, the first light receiving component 530, the second light receiving component 520 and the third light receiving component 540 each include a receiving cap and a receiving seat, the receiving cap is arranged on the receiving seat to form a receiving cavity, and a light receiving chip is arranged in the receiving cavity, which receives an optical signal and converts the optical signal into an electrical signal.

[0126] The receiving seat is further provided with a receiving pin, one end of the receiving pin is connected with the circuit board 300 through the flexible circuit board group 900 to realize the electrical connection between the receiving pin and the circuit board 300. The receiving pin extends upward from the bottom of the receiving seat until it exceeds the top of the receiving seat and is connected with the pad where the light receiving chip is located by wire bonding to realize the electrical connection between the receiving pin and the light receiving chip, and then the electrical signal is transmitted to the circuit board 300 through the receiving pin.

[0127] The receiving pin of the light receiving component is the electrical input end of the light receiving part 500. Illustratively, the receiving pin of the first light receiving component 530 is the second electrical input end of the light receiving part 500, the receiving pin of the second light receiving component 520 is the third electrical input end of the light receiving part 500, and the receiving pin of the third light receiving component 540 is the first electrical input end of the light receiving part 500. The fourth flexible circuit board 904 is connected with the receiving pin of the second light receiving component 520, the third flexible circuit board 903 is connected with the receiving pin of the first light receiving component 530, and the second flexible circuit board 902 is connected with the receiving pin of the third light receiving component 540.

[0128] In some embodiments, the top of the receiving cap of the light receiving component is provided with a second lens. The second lens is a converging lens, which can converge and couple the optical signal incident on the second lens to the light receiving chip in the receiving cavity.

[0129] 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 component. 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 component. Illustratively, the top of the second light receiving component 520 is directly attached with a second filter 5178, which is a 0° filter and can allow the second wavelength of light signal to pass through.

[0130] When the second lens protrudes from the receiving tube cap, the top of the light receiving assembly is provided with a support 550 to attach a 0° filter. The top of the first light receiving assembly 530 is attached with a first filter 5177 through the support 550, and the first filter 5177 is a 0° filter that can allow the first wavelength optical signal to pass through.

[0131] 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. 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.

[0132] In some embodiments, the first light receiving assembly 530, the second light receiving assembly 520, and the third light receiving assembly 540 are located on the same side of the light receiving component 500.

[0133] 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.

[0134] 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 that the fiber adapter 700 is connected 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 that the fiber adapter 700 is connected with the first cavity through the connecting sleeve 710.

[0135] 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 that the light emitting component 400 is connected with the first cavity.

[0136] In some embodiments, the first connecting hole 5111 and the second connecting hole 5131 can be oppositely arranged. For example, the central axis of the first connecting hole 5111 and the central axis of the second connecting hole 5131 are located on the same straight line.

[0137] In some embodiments, an isolator can be disposed in the second connecting hole 5131. The isolator can allow the emission light signal emitted by the light emitting component 400 to be incident on the light receiving component 500, and prevent the emission light signal incident on the light receiving component 500 from returning to the light emitting component 400.

[0138] In some embodiments, the first cavity can include a third connecting hole 5141. The third connecting hole 5141 can be used for insertion of a light receiving assembly to connect the light receiving assembly with the first cavity. For example, the third connecting hole 5141 can be used for insertion of the third light receiving assembly 540 to connect the third light receiving assembly 540 with the first cavity.

[0139] In some embodiments, the first cavity can include a fourth connecting hole 5121. The fourth connecting hole 5121 can be used for insertion of a light receiving assembly to connect the light receiving assembly with the first cavity. For example, the fourth connecting hole 5121 can be used for insertion of the second light receiving assembly 520 to connect the second light receiving assembly 520 with the first cavity.

[0140] In some embodiments, the first cavity can include a fifth connecting hole 5122. The fifth connecting hole 5122 can be used for insertion of a light receiving assembly to connect the light receiving assembly with the first cavity. For example, the fifth connecting hole 5122 can be used for insertion of the first light receiving assembly 530 to connect the first light receiving assembly 530 with the first cavity.

[0141] In some embodiments, the fourth connecting hole 5121 and the fifth connecting hole 5122 can be located on one side wall of the first cavity, and the third connecting hole 5141 can be located on another side wall of the first cavity, so as to reduce the length dimension of the first cavity.

[0142] FIG. 10 is an assembly view of the first light receiving assembly, the bracket, and the first filter according to some embodiments, FIG. 11 is a sectional view of the first light receiving assembly, the bracket, and the first filter according to some embodiments, and FIG. 12 is an exploded view of the first light receiving assembly, the bracket, and the first filter according to some embodiments. As shown in FIGS. 10-12, 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 in which a light receiving chip is arranged. 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 and the like in the receiving cavity. The sixth lens 534 is arranged on the receiving tube cap 533.

[0143] 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.

[0144] FIG. 13 is a structural diagram of a bracket 1, and FIG. 14 is a structural diagram of a bracket 2, according to some embodiments. As shown in FIGS. 13 and 14, 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.

[0145] 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 to the first filter 5177.

[0146] 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.

[0147] 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.

[0148] 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.

[0149] 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.

[0150] In some embodiments, the size of the first light passing hole 554 is greater than or equal to the size of the sixth lens 534, so that the first light passing hole 554 can accommodate the sixth 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 sixth lens 534 in the first light passing hole 554.

[0151] The first light hole 554 can accommodate the sixth lens 534, and the first filter 5177 is disposed on the first light hole 554, so that the optical signal (i.e., the third wavelength optical signal) of the first filter 5177 is coupled into the light receiving chip of the first light receiving assembly 530 through the sixth lens 534 in the first light hole 554.

[0152] FIG. 15 is an exploded view of a first cavity according to some embodiments, and FIG. 16 is an exploded view of a first housing and a light receiving assembly according to some embodiments. As shown in FIGS. 15 and 16, in some embodiments, the first cavity can include a first cover plate 515.

[0153] In some embodiments, the first cavity can include a first housing 510. The first cover plate 515 can be covered on the first housing 510 to form the first cavity. The light receiving assembly 517 can be disposed in the first cavity. The light receiving assembly 517 can transmit the emitted optical signal to the fiber adapter 700, or can split the received optical signal transmitted by the fiber adapter 700 to the first cavity and then make the split optical signal incident on the corresponding light receiving assembly.

[0154] FIG. 17 is an optical path diagram of a light receiving assembly according to some embodiments. As shown in FIG. 17, in some embodiments, the light receiving assembly 517 can include a fourth lens 5171. The fourth lens 5171 is used to collimate / converge the optical signal. For example, the received optical signal transmitted by the first cavity to the fiber adapter 700 is converged by the fourth lens 5171, and the optical signal transmitted by the fiber adapter 700 to the first cavity is collimated by the fourth lens 5171.

[0155] In some embodiments, the light receiving assembly 517 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, and the second end of the wave splitting assembly 5172 can be disposed corresponding to the second end of the light receiving component, so that the wave splitting assembly 5172 can be disposed along the length direction of the light receiving component 500.

[0156] The wave splitting assembly 5172 can be disposed along the length direction of the light receiving component 500, i.e., the wave splitting assembly 5172 can be disposed 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 wave splitting assembly 5172 is disposed along the length direction of the first housing 510, the width dimension of the first housing 510 required to accommodate the wave splitting assembly 5172 can be reduced to meet the demand. Since the length dimension of the receiving pin of the light receiving assembly 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.

[0157] In some embodiments, the light receiving component 500 can further include a fourth lens 5171 and a wavelength division component 5172. The fourth lens 5171 can be disposed between the light emitting component 400 and the wavelength division component 5172, and the wavelength division component 5172 can be disposed 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 fourth lens 5171. The wavelength division component 5172 can divide the light signal collimated by the fourth lens 5171 by wavelength. For example, the wavelength division component 5172 can divide a light signal 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 by wavelength.

[0158] 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 fourth lens 5171, and can divide the received light signal (i.e., the received light beam) collimated by the fourth lens 5171 by wavelength. The distance between the emitted light beam and the received light beam in the width direction of the first housing 510 can be reduced, and thus the width dimension of the light receiving component 500 can be reduced.

[0159] 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 emitted light entrance. The emitted light signal emitted by the light emitting component 400 is incident to the emitted 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 emitted 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 emitted 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 that the width dimension of the light receiving component 500 can be reduced.

[0160] In some embodiments, the first end of the wavelength division component 5172 has a first light exit, and the second end of the wavelength division component 5172 has a second light exit and a third light exit. The received light signal reflected through the emitted light entrance of the second end of the wavelength division component 5172 is divided into the first wavelength light signal, the second wavelength light signal and the third wavelength light signal. The first wavelength light signal is emitted through the second light exit of the second end of the wavelength division component 5172, the third wavelength light signal is emitted through the first light exit of the first end of the wavelength division component 5172, and the third wavelength light signal is emitted through the third light exit of the second end of the wavelength division component 5172.

[0161] In some embodiments, the first end of the wavelength division component 5172 and the second end of the wavelength division component 5172 are disposed in parallel, so that the emitted light signal incident to the second end of the wavelength division component 5172 and the emitted light signal emitted through the first end of the wavelength division component 5172 are parallel to each other.

[0162] In some embodiments, the first end of the wave separation assembly 5172 has a tilt angle in a first preset range, so that the received light signal including the first wavelength, the second wavelength and the third wavelength incident to the wave separation assembly 5172 can be separated into the first wavelength light signal, the second wavelength light signal and the third wavelength light signal by the wave separation assembly 5172. For example, the first preset range is 8°±1°.

[0163] In some embodiments, the wave separation assembly 5172 can include a substrate 51721. The substrate 51721 is a block substrate. The first end surface of the substrate 51721 is arranged corresponding to the first end of the light receiving component 500, and the second end surface of the substrate 51721 is arranged corresponding to the second end of the light receiving component 500, so that the substrate 51721 is arranged along the length direction of the light receiving component 500. The first end surface of the substrate 51721 can be directed towards the fourth lens 5171. The second end surface of the substrate 51721 can be directed towards the second connecting hole 5131.

[0164] The first end surface of the substrate 51721 and the second end surface of the substrate 51721 are arranged in parallel, so that the light signal incident to the substrate 51721 and the light signal emitted through the substrate 51721 are parallel to each other.

[0165] The first end surface of the substrate 51721 can be directed towards the fourth lens 5171, and the second end surface of the substrate 51721 can be directed towards the second connecting hole 5131, so that the substrate 51721 can be arranged along the horizontal direction of the first cavity.

[0166] In some embodiments, the wave separation assembly 5172 can include a first wave plate 51722. The first wave plate 51722 can be arranged on the first end surface of the substrate 51721. The first wave plate 51722 can be located between the fourth lens 5171 and the substrate 51721. The first wave plate 51722 is the receiving light entrance of the first end of the wave separation assembly 5172. The first wave plate 51722 can allow the emitted light signal and the received light signal to pass through.

[0167] The central axis of the first wave plate 51722 and the central axis of the fourth lens 5171 can coincide, so that the received light signal collimated by the fourth lens 5171 is incident to the first wave plate 51722, and the emitted light signal of the first wave plate 51722 can be focused and coupled by the fourth lens 5171.

[0168] In some embodiments, the wave separation assembly 5172 can include a second wave plate 51723. The second wave plate 51723 can be arranged on the first end surface of the substrate 51721. One side of the second wave plate 51723 can be connected with the first wave plate 51722. The second wave plate 51723 can allow the received light signal to be reflected.

[0169] In some embodiments, the wave splitting component 5172 can include a third wave plate 51724. The third wave plate 51724 can be disposed on the first end surface of the substrate 51721. One side of the third wave plate 51724 can be connected with the other side of the second wave plate 51723. The third wave plate 51724 is the first light exit of the first end of the wave splitting component 5172.

[0170] In some embodiments, the third wave plate 51724 can be a low-pass wave plate, which can allow low-frequency signals to pass through and block high-frequency signals. For example, the third wave plate 51724 can allow the third-wavelength light signal to be transmitted and can also allow the second-wavelength light signal to be reflected.

[0171] In some embodiments, the wave splitting component 5172 can include a fourth wave plate 51725. The fourth wave plate 51725 can be disposed on the second end surface of the 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 substrate 51721 and the second connecting hole 5131. The fourth wave plate 51725 is the light entrance of the second end of the wave splitting component 5172. The fourth wave plate 51725 can allow the received light signal to be reflected and can also allow the emitted light signal to be transmitted.

[0172] 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 to the first cavity through the second connecting hole 5131 is incident to the fourth wave plate 51725.

[0173] In some embodiments, the wave splitting component 5172 can include a fifth wave plate 51726. The fifth wave plate 51726 can be disposed on the second end surface of the substrate 51721. The fifth wave plate 51726 can be disposed opposite to the second wave plate 51723. One side of the fifth wave plate 51726 can be connected with the fourth wave plate 51725. The fifth wave plate 51726 is the second light exit of the second end of the wave splitting component 5172.

[0174] In some embodiments, the fifth wave plate 51726 can be a band-pass wave plate, which can allow signals within a certain frequency range to pass through and block signals of other frequencies. For example, the fifth wave plate 51726 can allow the first-wavelength light signal to be transmitted and can also allow the third-wavelength light signal and the second-wavelength light signal to be reflected.

[0175] In some embodiments, the wave splitting component 5172 can include a sixth wave plate 51727. The sixth wave plate 51727 can be disposed on the second end surface of the substrate 51721. The sixth wave plate 51727 can be disposed opposite to the third wave plate 51724. The sixth wave plate 51727 can be connected with the other side of the fifth wave plate 51726. The sixth wave plate 51727 is the third light exit of the second end of the wave splitting component 5172.

[0176] In some embodiments, the sixth wave plate 51727 can be a high-pass wave plate, which can allow high-frequency signals to pass through and prevent low-frequency signals from passing through. For example, the sixth wave plate 51727 can allow the second-wavelength light signal to be transmitted and can also allow the third-wavelength light signal to be reflected.

[0177] The fourth wave plate 51725, the fifth wave plate 51726, and the sixth wave plate 51727 can be sequentially connected to reduce the length of the second end surface of the substrate 51721.

[0178] In some embodiments, the center distance between any two wave plates of the fourth wave plate 51725, the fifth wave plate 51726, and the sixth wave plate 51727 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 51726 and the second-wavelength light signal transmitted by the sixth wave plate 51727, thereby improving the isolation degree. 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 51726, and the sixth wave plate 51727 is greater than 1000 nm.

[0179] The first wave plate 51722, the second wave plate 51723, and the third wave plate 51724 can be sequentially connected to reduce the length of the first end surface of the substrate 51721.

[0180] Since the plurality of wave plates of the first end surface of the substrate 51721 and the plurality of wave plates of the second end surface of the substrate 51721 are oppositely arranged, the center distance between any two wave plates of the first wave plate 51722, the second wave plate 51723, and the third wave plate 51724 is 1000 nm.

[0181] The third wave plate 51724 is located at the first end surface of the substrate 51721, and the fifth wave plate 51726 and the sixth wave plate 51727 are located at the second end surface of the substrate 51721, so that the emission direction of the light signal transmitted by the third wave plate 51724 is opposite to the emission direction of the light signal transmitted by the fifth wave plate 51726 or the light signal transmitted by the sixth wave plate 51727, thereby improving the isolation degree.

[0182] In some embodiments, the receiving light assembly 517 can include a first reflecting plate 5173. The first reflecting plate 5173 can be located on the output light path of the fifth wave plate 51726 to reflect the light signal transmitted by the fifth wave plate 51726. The first reflecting plate 5173 can allow the first-wavelength light signal transmitted by the fifth wave plate 51726 to be reflected.

[0183] In some embodiments, the receiving light assembly 517 can include a second reflective sheet 5176. The second reflective sheet 5176 can be located on the output light path of the third wave plate 51724 to reflect the light signal transmitted by the third wave plate 51726 out. The second reflective sheet 5176 can allow the third wavelength light signal transmitted by the third wave plate 51724 to be reflected.

[0184] In some embodiments, the receiving light assembly 517 can include a third reflective sheet 5175. The third reflective sheet 5175 can be located on the output light path of the sixth wave plate 51727 to reflect the light signal transmitted by the sixth wave plate 51727. The third reflective sheet 5175 can allow the second wavelength light signal transmitted by the sixth wave plate 51727 to be reflected.

[0185] The receiving light assembly 517 can include a first filter sheet 5177. The first filter sheet 5177 can be located on the reflected light path of the second reflective sheet 5176.

[0186] In some embodiments, the first filter sheet 5177 can be attached on the top of the first light receiving assembly 530 to filter the light signal so that the first light receiving assembly 530 receives the third wavelength light signal.

[0187] The receiving light assembly 517 can include a second filter sheet 5178. The second filter sheet 5178 can be located on the reflected light path of the first reflective sheet 5173.

[0188] In some embodiments, the second filter sheet 5178 can be attached on the top of the second light receiving assembly 520 to filter the light signal so that the second light receiving assembly 520 receives the first wavelength light signal.

[0189] In some embodiments, the receiving light assembly 517 can include a third filter sheet 5174. The third filter sheet 5174 can be located on the output light path of the sixth wave plate 51727. The third filter sheet 5174 can allow the light signal transmitted by the sixth wave plate to pass through. For example, the third filter sheet 5174 can allow the second wavelength light signal to pass through.

[0190] In some embodiments, the third filter sheet 5174 can be attached on the top of the third light receiving assembly 540 to filter the light signal so that the third light receiving assembly 540 receives the second wavelength light signal.

[0191] In some embodiments, the third filter sheet 5174 can be located between the sixth wave plate 51727 and the corresponding light receiving assembly, and the third filter sheet 5174 is not connected to the corresponding light receiving assembly. For example, the third filter sheet 5174 can be located between the sixth wave plate 51727 and the third light receiving assembly 540, and the third filter sheet 5174 is not connected to the third light receiving assembly 540.

[0192] As shown in FIG. 17, the light path is as follows:

[0193] The emitted light signal is transmitted through the fourth wave plate 51725 and the first wave plate 51722 in turn, and then focused and coupled to the fiber adapter 700 through the fourth lens 5171.

[0194] The received light signal is first collimated through the fourth lens 5171, then transmitted through the first wave plate 51722, and then incident to the fifth wave plate 51726 after being reflected through the fourth wave plate 51725 and the second wave plate 51723 in turn. The first-wavelength light signal in the received light signal is first transmitted through the fifth wave plate 51726, then incident to the second filter 5178 after being reflected through the first reflecting plate 5173.

[0195] The third-wavelength light signal in the received light signal is first reflected through the fifth wave plate 51726, then transmitted through the third wave plate 51724, and then incident to the first filter 5177 after being reflected through the second reflecting plate 5176.

[0196] The second-wavelength light signal in the received light signal is first reflected through the fifth wave plate 51726, then transmitted through the sixth wave plate 51727, and then reflected out through the third reflecting plate 5175 after being filtered through the third filter 5174.

[0197] FIG. 18 is a structural diagram of a first housing according to some embodiments, FIG. 19 is a structural diagram of a first housing according to some embodiments, and FIG. 20 is a sectional view of a first housing according to some embodiments. As shown in FIGS. 18-20, 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 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 enabling the transmission of light signals in and out of the first cavity along the first connecting hole 5111.

[0198] 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 to one end of the first side wall 511.

[0199] 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, and thus the emitted light signal emitted by the light emitting component 400 can be incident on the first cavity along the second connecting hole 5131.

[0200] In some embodiments, the third side wall 513 can have a first bearing surface 5132. The first bearing surface 5132 can be formed by inwardly recessing the inner surface of the third side wall 513. The first bearing surface 5132 can be towards the third connecting hole 5141.

[0201] In some embodiments, the third side wall 513 can have a second bearing surface 5133. The second bearing surface 5133 can be formed by inwardly recessing the inner surface of the third side wall 513. 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.

[0202] In some embodiments, the third side wall 513 can have a fifth bearing surface 5134. The fifth bearing surface 5134 can be formed by inwardly recessing the inner surface of the third side wall 513. 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 between the second connecting hole 5131 and the bottom plate of the first housing 510. The fifth bearing surface 5134 can be towards the first connecting hole 5111.

[0203] In some embodiments, the first housing 510 can include 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.

[0204] In some embodiments, the fourth side wall 514 can have a third bearing surface 5143. The third bearing surface 5143 can be a partial region of the inner surface of the fourth side wall 514.

[0205] The fourth side wall 514 can have a fourth bearing surface 5144. The fourth bearing surface 5144 can be a partial region of the inner surface of the fourth side wall 514. The fourth bearing surface 5144 can be connected with or not connected with the third bearing surface 5143.

[0206] In some embodiments, the third bearing surface 5143 is inclined relative to the fourth bearing surface 5114, such that the third bearing surface 5143 can be directed toward the fifth connecting hole 5122.

[0207] In some embodiments, the first housing 510 can include a first bottom plate 5161. The first bottom plate 5161 can be used to support the light receiving assembly 517. The first bottom plate 5161 can be connected with the first sidewall 511. The first bottom plate 5161 can be connected with the second sidewall 512. The first bottom plate 5161 can be connected with the third sidewall 513. The first bottom plate 5161 can be connected with the fourth sidewall 514.

[0208] In some embodiments, the first bottom plate 5161 can have a reserved hole 518. The reserved hole 518 can traverse the first bottom plate 5161 of the first housing 510. The reserved hole 518 can be located below the second bearing surface 5133 and the fifth bearing surface 5134, such that the reserved hole 518 can be correspondingly arranged with the second bearing surface 5133 and the fifth bearing surface 5134, so as to facilitate the formation of the second bearing surface 5133 and the fifth bearing surface 5134.

[0209] The first sidewall 511, the second sidewall 512, the third sidewall 513, and the fourth sidewall 514 are sequentially connected and respectively connected with the first bottom plate 5161, so as to form the first housing 510 with an opening. The opening of the first housing 510 can be directed toward the lower housing 202.

[0210] 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 accommodate devices in the light receiving assembly 517 except the first filter 5177 and the second filter 5178.

[0211] In some embodiments, the fourth connecting hole 5121 and the fifth connecting hole 5122 can be located in one of the second sidewall 512 and the fourth sidewall 514, and the third connecting hole 5141 can be located in the other of the second sidewall 512 and the fourth sidewall 514. For example, the fourth connecting hole 5121 and the fifth connecting hole 5122 can be located in the second sidewall 512, and the third connecting hole 5141 can be located in the fourth sidewall 514.

[0212] The second side wall 512 can have a 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 optical signal of the inner cavity of the first cavity can be incident to the light receiving component connected with the fourth connecting hole 5121. For example, the optical signal of the inner cavity of the first cavity can be incident to the second light receiving component 520.

[0213] In some embodiments, the fourth connecting hole 5121 can include a first sub-connecting hole 51211.

[0214] 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.

[0215] 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.

[0216] 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, such 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 to the light receiving component connected with the fifth connecting hole 5122. For example, the optical signal of the inner cavity of the first cavity can be incident to the first light receiving component 530.

[0217] In some embodiments, the fourth connecting hole 5121 is closer to the second connecting hole 5131 than the fifth connecting hole 5122, such that the light receiving component placed in the fourth connecting hole 5121 is closer to the light emitting component 400 than the light receiving component placed in the fifth connecting hole 5122.

[0218] In some embodiments, the fifth connecting hole 5122 can include a third sub-connecting hole 51221.

[0219] 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 housing 510. The other end of the fourth sub-connecting hole 51222 can be in communication with the third sub-connecting hole 51221. The size of the fourth sub-connecting hole 51222 is smaller than the size of the third sub-connecting hole 51221.

[0220] One end of the fourth sub-connection hole 51222 can be in communication with the inner cavity of the first housing 510, and the other end of the fourth sub-connection hole 51222 can be in communication with the third sub-connection hole 51221, so that the fifth connection hole 5122 can be in communication with the inner cavity of the first cavity.

[0221] In some embodiments, the second side wall 512 can have a first step 5123. The first step 5123 can be located between the fourth connection hole 5121 and the fifth connection hole 5122. The first step 5123 can make the surface of the area where the fifth connection hole 5122 is located different in height from the surface of the area where the fourth connection hole 5121 is located, that is, the depth of the fifth connection hole 5122 is different from the depth of the fourth connection hole 5121, thereby making the light receiving components placed in the fifth connection hole 5122 and the fourth connection hole 5121 all located in the corresponding connection holes, thereby improving the connection stability of the fifth connection hole 5122 and the fourth connection hole 5121 with their corresponding light receiving components, respectively. For example, the second light receiving component 520 is arranged in the fourth connection hole 5121, the first light receiving component 530 is arranged in the fifth connection hole 5122, and the first step 5123 makes the depth of the fifth connection hole 5122 greater than the depth of the fourth connection hole 5121.

[0222] The fourth side wall 514 can have a third connection hole 5141. The third connection hole 5141 can pass through the fourth side wall 514, so that the third connection hole 5141 can be in communication with the inner cavity of the first cavity, thereby making the optical signal of the inner cavity of the first cavity incident on the light receiving component connected with the third connection hole 5141. For example, the optical signal of the inner cavity of the first cavity can be incident on the third light receiving component 540.

[0223] In some embodiments, the central axis of the fourth connection hole 5121 is closer to the first connection hole 5131 than the central axis of the third connection hole 5141, so that the light receiving component placed in the fourth connection hole 5121 is closer to the fiber adapter 700 than the light receiving component placed in the third connection hole 5141.

[0224] 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 connection hole 5141 is located is recessed relative to other areas of the fourth side wall 514, thereby providing accommodation space for the third light receiving component 540 inserted into the third connection hole 5141, and also increasing the strength of the first housing 510.

[0225] FIG. 21 is a cross-sectional view of a light receiving component according to some embodiments, and FIG. 22 is a cross-sectional view of a light receiving component according to some embodiments. As shown in FIG. 21 and FIG. 22, in some embodiments, the fourth 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 fourth 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 fourth lens 5171 is facilitated, and assembly difficulty is reduced.

[0226] In some embodiments, the fourth lens 5171 can be passively mounted in the first connecting hole 5111 to reduce the volume of the first cavity.

[0227] 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 facing the fifth wave sheet 51726 and the second light receiving assembly 520, so that the first wavelength light signal transmitted by the fifth wave sheet 51726 is reflected by the first reflecting sheet 5173 to the second light receiving assembly 520.

[0228] 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 facing the third wave sheet 51724 and the first light receiving assembly 530, so that the three-wavelength light signal transmitted by the third wave sheet 51724 is reflected by the second reflecting sheet 5176 to the first light receiving assembly 530.

[0229] 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 facing the sixth wave sheet 51727 and the third light receiving assembly 540, so that the second wavelength light signal transmitted by the sixth wave sheet 51727 is reflected by the third reflecting sheet 5175 to the third light receiving assembly 540.

[0230] In some embodiments, the receiving rate of the second light receiving assembly 520 is greater than the receiving rate 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 the receiving light sensitive surface 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.

[0231] In some embodiments, the receiving rates of the second light receiving component 520, the first light receiving component 530, and the third light receiving component 540 are sequentially decreased, the receiving light sensitive surfaces of the second light receiving component 520, the first light receiving component 530, and the third light receiving component 540 are sequentially increased, the transmission paths of the first wavelength light signal, the second wavelength light signal, and the third wavelength light signal are sequentially increased, and the second light receiving component 520, the first light receiving component 530, and the third light receiving component 540 can all receive the corresponding wavelength receiving light signal with high efficiency.

[0232] In some embodiments, the second light receiving component 520 can be disposed in the fourth connecting hole 5121. The second light receiving component 520 can be disposed in the first sub-connecting hole 51211, and the second filter 5178 on the second light receiving component 520 can be disposed in the second sub-connecting hole 51212.

[0233] In some embodiments, the first light receiving component 530 can be disposed in the fifth connecting hole 5122. The first light receiving component 530 is disposed in the third sub-connecting hole 51221, part of the bracket 550 on the first light receiving component 530 is located in the third sub-connecting hole 51221, and part of the bracket 550 is located in the fourth sub-connecting hole 51222. The first filter 5177 on the bracket 550 is located in the fourth sub-connecting hole 51222.

[0234] In some embodiments, the third light receiving component 540 can be disposed in the third connecting hole 5141.

[0235] In some embodiments, the first reflecting sheet 5173 can be supported on the second supporting surface 5133, so that the first reflecting sheet 5173 can face the fifth wave sheet 51726 and the second light receiving component 520 in the fourth connecting hole 5121, and thus the first reflecting sheet 5173 can reflect the first wavelength light signal to the second light receiving component 520.

[0236] In some embodiments, 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. In some embodiments, the second reflecting sheet 5176 can be supported on the third supporting surface 5143, so that the second reflecting sheet 5176 can face the fifth connecting hole 5122, and thus the second reflecting sheet 5176 can face the first light receiving component 530 in the fifth connecting hole 5122, and thus the second reflecting sheet 5176 can reflect the third wavelength light signal to the first light receiving component 530.

[0237] In some embodiments, a side wall of the wave splitting component 5172 can be supported on the fourth supporting surface 5144 to facilitate the bonding of the wave splitting component 5172 and the first housing 510. The fourth supporting surface 5144 can be located on the inner surface of the fourth side wall 514 or the inner surface of the second side wall 512.

[0238] In some embodiments, the third reflective sheet 5175 can be supported on the first supporting surface 5132 so that the third reflective sheet 5175 can face the third connecting hole 5141, and thus the third reflective sheet 5175 can face the third light receiving component 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 component 540.

[0239] 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 51727 and the reflective surface, and the exit surface is located between the third light receiving component 540 and the reflective surface. The reflective surface is arranged obliquely relative to the incident surface. The second wavelength light signal is incident on 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.

[0240] In some embodiments, one side of the reflective surface can be connected to one side of the incident surface through a connecting surface.

[0241] In some embodiments, the other side of the reflective surface can be connected to one side of the exit surface.

[0242] In some embodiments, the other side of the exit surface can be connected to the other side of the incident surface.

[0243] One side of the reflective surface can be connected to one side of the incident surface through a connecting surface, the other side of the reflective surface can be connected to one side of the exit surface, and the other side of the exit surface can be connected to the other side of the incident surface. This can reduce the width dimension of the third reflective sheet 5175, facilitate the increase of 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 thus improve the connection stability of the third reflective sheet 5175 and the first housing 510.

[0244] In some embodiments, the third filter sheet 5174 can be supported on the first supporting surface 5132.

[0245] In some embodiments, the third filter sheet 5174 can be located between the sixth wave sheet 51717 and the third reflective sheet 5175 to reduce the distance between the third reflective sheet 5175 and the third light receiving component 540, and thus reduce the width dimension of the first housing 510.

[0246] In some embodiments, the third filter 5174 is connected with the incident surface of the third reflecting sheet 5175, so that the third filter 5174 is connected with the third reflecting sheet 5175 in contact, thereby reducing the length of the first housing 510.

[0247] 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, which not only reduces the interference between the first reflecting sheet 5173 and the third reflecting sheet 5175, but also provides a space for the third filter 5174, and can also reduce the width of the first housing 510.

[0248] After the wavelength division assembly 5172 divides the received optical signal into the first wavelength optical signal, the second wavelength optical signal and the third wavelength optical signal, the optical path is shown in FIG. 23, the first wavelength optical signal is reflected by the first reflecting sheet 5173 to the second filter 5178, and then filtered by the second filter 5178 and incident to the second optical receiving assembly 520; the third wavelength optical signal is reflected by the second reflecting sheet 5176 to the first filter 5177, and then filtered by the first filter 5177 and incident to the first optical receiving assembly 530; the second wavelength optical signal is filtered by the third filter 5174, and then incident to the third reflecting sheet 5175, and reflected by the third reflecting sheet 5175 to the third optical receiving assembly 540.

[0249] FIG. 23 is a diagram of the internal structure of another optical module according to some embodiments, FIG. 24 is a diagram of the internal structure of another optical module according to some embodiments, and FIG. 25 is a diagram of the internal structure of another optical module according to some embodiments. As shown in FIGS. 23-25, in some embodiments, the light input end of the optical receiving component 500 can be connected with the light output end of the optical transmitting component 400. The light input / output end of the optical receiving component 500 can be connected with the fiber adapter 700.

[0250] In some embodiments, the adapter board 310 can be arranged 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.

[0251] In some embodiments, the other end of the adapter board 310 is arranged in stack 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.

[0252] In some embodiments, the adapter plate 310 and the light receiving component 500 can enclose the first avoiding port 320. The light emitting component 400 can be placed at the first avoiding port 320 of the adapter plate 310 to provide a space for the light emitting component 400.

[0253] In some embodiments, the light receiving component 500 can include a first cover plate 515.

[0254] In some embodiments, the light 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. A receiving light assembly 517 can be arranged in the first cavity. The receiving light assembly 517 can transmit the emitted 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.

[0255] FIG. 26 is an internal structure exploded view II of another optical module according to some embodiments, and FIG. 27 is an exploded view of another light receiving component according to some embodiments. As shown in FIG. 26 and FIG. 27, in some embodiments, at least one light receiving chip is arranged on the end surface of the adapter plate 310 extending into the light receiving component 500.

[0256] In some embodiments, the surface of one end of the adapter plate 310 is provided with a first light receiving chip 3132.

[0257] In some embodiments, the surface of one end of the adapter plate 310 is provided with a second light receiving chip 3131.

[0258] In some embodiments, the surface of one end of the adapter plate 310 is provided with a third light receiving chip 3121.

[0259] 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 plate 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 plate 310, so as to reduce the length dimension of the light receiving component 500.

[0260] In some embodiments, the adapter plate 310 can include a connecting portion 311. The connecting portion 311 can be arranged in a stack with the circuit board 300, and electrically connected through a connecting member.

[0261] In some embodiments, the adapter plate 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.

[0262] In some embodiments, the adapter plate 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 enclose the adapter plate 310 with a second avoiding opening.

[0263] In some embodiments, the size of the first avoiding opening 320 is smaller than the size of the second avoiding opening.

[0264] 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.

[0265] 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.

[0266] 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 to the first cavity through the second connecting hole 5131.

[0267] In some embodiments, the third side wall 513 can have a first notch 5135. The opening of the first notch 5135 can be towards one side of the first housing 510. The first notch 5135 can be arranged 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.

[0268] In some embodiments, the first notch 5135 has a gap with the bottom of the third side wall 513, so that the height of the bottom of the first notch 5135 is flush with the height of the bottom of the adapter plate 310, thereby facilitating the insertion of the first clamping portion 312 into the first housing 510 through the first notch 5135.

[0269] In some embodiments, the width dimension of the first notch 5135 can be greater than or equal to the thickness dimension of the first clamping portion 312, so as to facilitate the insertion of the first clamping portion 312 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 the sealing performance of the third side wall 513.

[0270] In some embodiments, the length dimension of the first notch 5135 can be greater than or equal to the 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.

[0271] In some embodiments, the third side wall 513 can have a second notch 5136. The opening of the second notch 5136 can be towards the other 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.

[0272] In some embodiments, the second notch 5136 has a gap with the bottom of the third side wall 513, so that the height of the bottom of the second notch 5136 is flush with the height of the bottom of the adapter board 310, thereby facilitating the insertion of the second clamping portion 313 into the first housing 510 through the second notch 5136.

[0273] In some embodiments, the width dimension of the second notch 5136 can be greater than or equal to the thickness dimension of the second clamping portion 313, so as to facilitate the insertion of the second clamping portion 313 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 the sealing of the third side wall 513.

[0274] In some embodiments, the length dimension of the second notch 5136 can be greater than or equal to the 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.

[0275] In some embodiments, the first notch 5135 and the second notch 5136 can be located on both sides of the second connecting hole 5131, so as to improve the connection stability of the adapter board 310 and the first housing 510.

[0276] In some embodiments, the first housing 510 can include a first bottom plate 5161. The first bottom plate 5161 can be provided with a receiving light assembly 517, so as to support the receiving light assembly 517.

[0277] The first housing 510 only includes the first side wall 511, the third side wall 513, and the first bottom plate 5161. 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 first bottom plate 5161.

[0278] 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 with the first connecting portion 5151. The other side of the second connecting portion 5152 can be connected with a side wall of the first bottom plate 5161 close to the first clamping portion 312.

[0279] In some embodiments, the first cover plate 515 can include a third connecting portion 5153. The third connecting portion 5153 is arranged opposite to the second connecting portion 5152. One side of the third connecting portion 5153 can be connected with the first connecting portion 5151. The other side of the third connecting portion 5153 can be connected with a side wall of the first bottom plate 5161 close to the second clamping portion 313.

[0280] In some embodiments, the light receiving assembly 517 can include a fourth lens 5171, a wave splitting 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.

[0281] In some embodiments, the light receiving assembly 517 can include a fifth lens 5179.

[0282] In some embodiments, the light receiving assembly 517 can include a fifth lens 5181.

[0283] In some embodiments, the light receiving assembly 517 can include a fifth lens 5183.

[0284] In some embodiments, the light receiving assembly 517 can include a turning prism 5180. The turning prism 5180 can reflect the light signal converged by the fifth lens 5179 to the corresponding light receiving chip. For example, the turning prism 5180 can reflect the light signal converged by the fifth lens 5179 to the first light receiving chip 3132.

[0285] In some embodiments, the light receiving assembly 517 can include a turning prism 5182. The turning prism 5182 can reflect the light signal converged by the fifth lens 5181 to the corresponding light receiving chip. For example, the turning prism 5182 can reflect the light signal converged by the fifth lens 5181 to the second light receiving chip 3131.

[0286] In some embodiments, the light receiving assembly 517 can include a turning prism 5184. The turning prism 5184 can reflect the light signal converged by the fifth lens 5183 to the corresponding light receiving chip. For example, the turning prism 5184 can reflect the light signal converged by the fifth lens 5183 to the third light receiving chip 3121.

[0287] The turning prism 5180, the turning prism 5182, and the turning prism 5184 each have a reflecting surface obliquely arranged above a corresponding light-receiving chip, so that the optical signal is reflected by the reflecting surface to the corresponding light-receiving chip.

[0288] In some embodiments, the first bottom plate 5161 can include a first support portion 51611. The first support portion 51611 can support the fourth lens 5171, the wave division component 5172, the first reflecting sheet 5173, the second reflecting sheet 5176, the third reflecting sheet 5175, the third filter sheet 5174, the fifth lens 5179, the turning prism 5180, the fifth lens 5181, the turning prism 5182, the fifth lens 5183, and the turning prism 5184.

[0289] In some embodiments, the first bottom plate 5161 can include a second support portion 51612. The second support portion 51612 can be located on 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.

[0290] In some embodiments, the first 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.

[0291] 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 optical signal reflected by the turning prism 5180 can be incident on the corresponding light-receiving chip arranged on the third support portion 51613.

[0292] 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 optical signal reflected by the turning prism 5182 can be incident on the corresponding light-receiving chip arranged on the third support portion 51613.

[0293] 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 optical signal reflected by the turning prism 5184 can be incident on the corresponding light-receiving chip arranged on the second support portion 51612.

[0294] 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 substrate of the wave division assembly 5172 can abut against the side surface of the first abutting plate 51614.

[0295] 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 fifth lens 5179. The second reflecting sheet 5176 can abut against the abutting surface of the second abutting plate 51615. The first abutting surface 5132 can be arranged on the first support portion 51611.

[0296] The second abutting surface and the fifth abutting surface for abutting the first reflecting sheet 5173 are also arranged on the first support portion 51611.

[0297] 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.

[0298] FIG. 28 is a diagram of a light emitting path according to some embodiments, which shows the transmission path of the middle light emitting signal. As shown in FIG. 28, the fourth wavelength light signal generated by the first laser assembly 440 is transmitted to the first lens 4181, collimated by the first lens 4181, transmitted to the third filter 417, transmitted to the second filter 416 through the third filter 417, and transmitted to the sixth connecting hole 4121 through the second filter 416; the fifth wavelength light signal generated by the second laser assembly 450 is transmitted to the second lens 4182, collimated by the second lens 4182, transmitted to the third filter 417, reflected by the third filter 417, transmitted to the second filter 416, and transmitted to the sixth connecting hole 4121 through the second filter 416; the sixth wavelength light signal generated by the third laser assembly 460 is transmitted to the third lens 4183, collimated by the third lens 4183, transmitted to the second filter 416, and transmitted to the sixth connecting hole 4121 after being reflected by the second filter 416. The second filter 416 and the third filter 417 make the fourth wavelength light signal, the fifth wavelength light signal, and the sixth wavelength light signal in the same light path when outputting from the second housing 410.

[0299] FIG. 29 is a structural diagram of another light emitting component according to some embodiments, and FIG. 30 is an assembly diagram of another light receiving and transmitting component and a fiber adapter according to some embodiments. As shown in FIGS. 29 and 30, 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 emitted by the light emitting component 400 can be incident on the light receiving component 500.

[0300] 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.

[0301] In some embodiments, the light emitting component 400 can include a first light emitting assembly 402. The first light emitting assembly 402 can emit a fourth wavelength of light signal.

[0302] 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 of light signal.

[0303] 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 of light signal.

[0304] 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 signal with different rates.

[0305] In some embodiments, the first light emitting assembly 402, the second light emitting assembly 401 and the third light emitting assembly 403 can adopt coaxial packaging. For example, the emitting optical 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 emitting tube cap and an emitting tube base, the emitting tube cap is arranged on the emitting tube base to form an emitting cavity, and a laser chip is arranged in the emitting cavity to emit a light signal.

[0306] The emitting tube base is further provided with an emitting tube pin, one end of the emitting tube pin is connected with the circuit board 300 through the flexible circuit board group 900 to realize electrical connection between the emitting tube pin and the circuit board 300. The emitting tube pin extends upward from the bottom of the emitting tube base until it exceeds the top of the emitting tube base, and is wire-bonded with a pad where the laser chip is located to realize electrical connection between the emitting tube pin and the laser chip, and then transmit the electrical signal on the circuit board 300 to the laser chip through the emitting tube pin.

[0307] In some embodiments, the first light emitting assembly 402, the second light emitting assembly 401 and the third light emitting assembly 403 are respectively located at different side walls of the light emitting component 400 to reduce the size of the light emitting component 400. For example, the first light emitting assembly 402 is located at the third side wall of the light emitting component 400, the second light emitting assembly 401 is located at the second side wall of the light emitting component 400, and the third light emitting assembly 403 is located at the fourth side wall of the light emitting component 400.

[0308] FIG. 31 is an exploded view I of another light emitting component according to some embodiments, and FIG. 32 is an exploded view II of another light emitting component according to some embodiments. As shown in FIG. 31 and FIG. 32, in some embodiments, the second cavity can include a sixth connecting hole 4121. The sixth connecting hole 4121 can traverse a sidewall of the second cavity near the light receiving component 500, so that the optical signal within the second cavity can be transmitted to the light receiving component 500 through the sixth connecting hole 4121.

[0309] In some embodiments, the second cavity can include a seventh connecting hole 4131. The seventh connecting hole 4131 can be used for insertion of one of the at least one light emitting assembly, so that the one of the at least one light emitting assembly is connected with the second cavity. For example, the seventh connecting hole 4131 can be used for insertion of the second light emitting assembly 401, so that the second light emitting assembly 401 is connected with the second cavity.

[0310] In some embodiments, the second cavity can include an eighth connecting hole 4145. The eighth connecting hole 4145 can be used for insertion of another of the at least one light emitting assembly, so that the another of the at least one light emitting assembly is connected with the second cavity. For example, the eighth connecting hole 4145 can be used for insertion of the first light emitting assembly 402, so that the first light emitting assembly 402 is connected with the second cavity.

[0311] In some embodiments, the second cavity can include a ninth connecting hole 4151. The ninth connecting hole 4151 can be used for insertion of a further one of the at least one light emitting assembly, so that the further one of the at least one light emitting assembly is connected with the second cavity. For example, the ninth connecting hole 4151 can be used for insertion of the third light emitting assembly 403, so that the third light emitting assembly 403 is connected with the second cavity.

[0312] The seventh connecting hole 4131, the eighth connecting hole 4145 and the ninth connecting hole 4151 are respectively located at different sidewalls of the second cavity, so as to reduce the size of the second cavity. For example, the seventh connecting hole 4131 is located at a second sidewall of the second cavity, the eighth connecting hole 4145 is located at a third sidewall of the second cavity, and the ninth connecting hole 4151 is located at a fourth sidewall of the second cavity.

[0313] In some embodiments, the second cavity can include a second cover plate 420.

[0314] 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 emission light assembly 404 can be disposed in the second cavity. The emission light assembly 404 can be located on an output light path of at least one of the light emission assemblies, such that at least one light signal emitted by at least one of the light emission assemblies can be transmitted out of the emission light assembly 404.

[0315] FIG. 33 is an exploded view of an emission light assembly according to some embodiments, FIG. 34 is a cross-sectional view of an emission light assembly according to some embodiments, and FIG. 35 is another emission light path diagram according to some embodiments. As shown in FIGS. 33-35, in some embodiments, the emission light assembly 404 can include a first reflective-transmissive sheet 4043.

[0316] The first reflective-transmissive sheet 4043 can allow transmission of a wavelength of light signal. The first reflective-transmissive sheet 4043 can be located on an output light path of one of the light emission assemblies, such that a wavelength of light signal emitted by the one of the light emission assemblies can be transmitted out of the emission light assembly 404. For example, the first reflective-transmissive sheet 4043 can be located on an output light path of the first light emission assembly 402, such that a fourth wavelength of light signal emitted by the first light emission assembly 402 can be transmitted out of the emission light assembly 404 via the first reflective-transmissive sheet 4043.

[0317] The first reflective-transmissive sheet 4043 can allow reflection of another wavelength of light signal. The first reflective-transmissive sheet 4043 can be located on an output light path of another one of the light emission assemblies, such that another wavelength of light signal emitted by the another one of the light emission assemblies can be reflected out of the emission light assembly 404. For example, the first reflective-transmissive sheet 4043 can be located on an output light path of the second light emission assembly 401, such that a fifth wavelength of light signal emitted by the second light emission assembly 401 can be reflected out of the emission light assembly 404 via the first reflective-transmissive sheet 4043.

[0318] In some embodiments, the emission light assembly 404 can include a second reflective-transmissive sheet 4042. The second reflective-transmissive sheet 4042 can allow transmission of a wavelength of light signal. The second reflective-transmissive sheet 4042 can be located on a transmission light path of the first reflective-transmissive sheet 4043, such that a wavelength of light signal transmitted by the first reflective-transmissive sheet 4043 can be transmitted out of the emission light assembly 404 via the first reflective-transmissive sheet 4043.

[0319] The second reflective-transmissive sheet 4042 can allow transmission of another wavelength of light signal. The second reflective-transmissive sheet 4042 can be located on a reflection light path of the first reflective-transmissive sheet 4043, such that another wavelength of light signal reflected by the first reflective-transmissive sheet 4043 can be transmitted out of the emission light assembly 404 via the second reflective-transmissive sheet 4042.

[0320] The second reflective transmission sheet 4042 can allow another wavelength optical signal to be reflected. The second reflective transmission sheet 4042 can be located on an output light path of another one of the at least one light emitting component, so that another wavelength optical signal emitted by the another one of the at least one light emitting component is reflected by the second reflective transmission sheet 4042. For example, the second reflective transmission sheet 4042 can be located on an output light path of the third light emitting component 403, so that the sixth wavelength optical signal emitted by the third light emitting component 403 is reflected by the second reflective transmission sheet 4042.

[0321] The light path of the light emitting component 400 is described by taking the fourth wavelength optical signal emitted by the first light emitting component 402 as being transmitted by the first reflective transmission sheet 4043, the fifth wavelength optical signal emitted by the second light emitting component 401 as being reflected by the first reflective transmission sheet 4043, and the sixth wavelength optical signal emitted by the third light emitting component 403 as being reflected by the second reflective transmission sheet 4042. The light path is as follows:

[0322] The fourth wavelength optical signal is emitted by the first light emitting component 402, and is transmitted by the first reflective transmission sheet 4043 and the second reflective transmission sheet 4042. The fifth wavelength optical signal is emitted by the second light emitting component 401, is reflected by the first reflective transmission sheet 4043, and is transmitted by the second reflective transmission sheet 4042. The sixth wavelength optical signal is emitted by the third light emitting component 403, and is reflected by the second reflective transmission sheet 4042.

[0323] The coupling margin of the fourth wavelength optical signal with respect to the fifth wavelength optical signal and the sixth wavelength optical signal is small, and the fourth wavelength optical 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, so as to improve the coupling efficiency.

[0324] In some embodiments, the second housing 410 can include a second bottom plate 411. The second bottom plate 411 can be used to support devices.

[0325] 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 second 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 signal emitted by the light emitting component 400 can be transmitted to the light receiving component 500 through the sixth connecting hole 4121.

[0326] In some embodiments, the second housing 410 can include a second sidewall 413. The bottom of the second sidewall 413 can be connected with the second bottom plate 411. One end of the second sidewall 413 can be connected with one end of the first sidewall 412. The second sidewall 413 can have a seventh connecting hole 4131. The seventh connecting hole 4131 can pass through the second sidewall 413. The seventh connecting hole 4131 can be in communication with the inner cavity of the second cavity, so that the light signal emitted by the second light emitting component 401 placed in the seventh connecting hole 4131 can be incident to the inner cavity of the second cavity. For example, the fifth wavelength light signal emitted by the second light emitting component 401 is incident to the inner cavity of the second cavity.

[0327] In some embodiments, the seventh connecting hole 4131 can be towards one side of the first reflective transmission sheet 4043, so that the fifth wavelength light signal emitted by the second light emitting component 401 placed in the seventh connecting hole 4131 can be reflected out through the first reflective transmission sheet 4043.

[0328] In some embodiments, the second housing 410 can include a third sidewall 414. The bottom of the third sidewall 414 can be connected with the second bottom plate 411. One end of the third sidewall 414 can be connected with the other end of the second sidewall 413. The third sidewall 414 is arranged opposite to the first sidewall 412. The third sidewall 414 can have an eighth connecting hole 4145. The eighth connecting hole 4145 can pass through the third sidewall 414. The eighth connecting hole 4145 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 eighth connecting hole 4145 can be incident to the inner cavity of the second cavity. For example, the fourth wavelength light signal emitted by the first light emitting component is incident to the inner cavity of the second cavity.

[0329] In some embodiments, the eighth connecting hole 4145 can be towards the other side of the first reflective transmission sheet 4043, so that the fourth wavelength light signal emitted by the first light emitting component 402 placed in the eighth connecting hole 4145 can be incident to the first reflective transmission sheet 4043.

[0330] In some embodiments, one side of the first reflective transmission sheet 4043 is arranged opposite to the other side of the first reflective transmission sheet 4043, so that the fourth wavelength light signal incident to the first reflective transmission sheet 4043 can be transmitted out.

[0331] 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 second 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. 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 third light emitting component 403 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.

[0332] In some embodiments, the ninth connecting hole 4151 can be towards one side of the second reflective transmission 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 transmission sheet 4042.

[0333] In some embodiments, the first reflective transmission sheet 4043 can be towards the other side of the second reflective transmission sheet 4042, so that the fifth wavelength light signal reflected by the first reflective transmission sheet 4043 and the fourth wavelength light signal transmitted by the first reflective transmission sheet 4043 can be incident to the second reflective transmission sheet 4042.

[0334] In some embodiments, one side of the second reflective transmission sheet 4042 is disposed opposite to the other side of the second reflective transmission sheet 4042, so that the fourth wavelength light signal and the fifth wavelength light signal incident to the second reflective transmission sheet 4042 can be transmitted out.

[0335] 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 second 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.

[0336] 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 disposed inclined 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.

[0337] 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 assembly 401 can be reflected by the first reflective transmission sheet 4043 and then emitted along the length direction of the second shell 410.

[0338] 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 inclined to the fourth side wall 415, thereby enabling the third wavelength emitted by the third light emitting assembly 403 located on the fourth side wall 415 to be reflected by the second reflective transmission sheet 4042. The end of the second reflective transmission sheet 4042 away from the first light emitting assembly 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 assembly 402 is the second end of the second reflective transmission sheet 4042.

[0339] 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 assembly 403 can be reflected by the second reflective transmission sheet 4042 and then emitted along the length direction of the second shell 410.

[0340] 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°.

[0341] In some embodiments, the light emitting assembly 404 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 on the first connecting surface 40414.

[0342] In some embodiments, the first connecting surface 40414 can have a second light transmission hole 40413, so that the fifth wavelength light signal incident on the fixing member 4041 can be transmitted through the second light transmission hole 40413.

[0343] 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 with one end of the first connecting surface 40414. The second connecting surface 40415 can be connected with the first reflective transmission sheet 4043. The second connecting surface 40415 can be obliquely arranged with the second side wall 413, so that the first reflective transmission sheet 4043 is obliquely arranged with the second side wall 413.

[0344] In some embodiments, the second connecting surface 40415 can have a third light transmission hole 40411, 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 on the fixing member 4041.

[0345] 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 on 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.

[0346] 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 with the other end of the second connecting surface 40415. The other end of the third connecting surface 40416 can be connected with the other end of the first connecting surface 40414. The third connecting surface 40416 can be connected with the second reflective transmission sheet 4042. The third connecting surface 40416 can be obliquely arranged with the fourth side wall 415, so that the second reflective transmission sheet 4042 is obliquely arranged with the fourth side wall 415.

[0347] 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 light signal and the fourth wavelength light signal transmitted through the third light transmission hole 40411 are transmitted out through the fourth light transmission hole 40412.

[0348] FIG. 36 is a partial structure diagram of another optical module according to some embodiments, FIG. 37 is a partial structure exploded diagram of another optical module according to some embodiments, and FIG. 38 is a partial structure diagram of another optical module according to some embodiments. As shown in FIGS. 36-38, in some embodiments, the optical module 200 can include a third housing 206. The third housing 206 can have a third accommodating cavity formed thereon, and the accommodating cavity of the third housing 206 can be used to carry optical devices, laser assemblies, etc. One end of the third housing 206 can be connected with a fiber adapter 700.

[0349] In some embodiments, the other end of the third housing 206 can be provided with an electrical connector 330. The electrical connector 330 can electrically connect the circuit board 300 through a flexible circuit board group or a flexible circuit board. Exemplarily, one end of the electrical connector 330 extends into the accommodating cavity of the third housing 206.

[0350] In some embodiments, the optical module 200 can include a third cover plate 207 and a fourth cover plate 208, which cover the third housing 206 respectively. Exemplarily, the third cover plate 207 and the fourth cover plate 208 are side by side above the third housing 206 along the length direction of the third housing 206.

[0351] In some embodiments, the third housing 206 is provided with a wavelength division component 5172. The third cover plate 207 can be located above the wavelength division component 5172.

[0352] In some embodiments, the third housing 206 can be provided with a first laser component 440. The front end of the first laser component 440 is towards one end of the third housing 206, and the rear end of the first laser component 440 is close to the other end of the third housing 206. The first laser component 440 can be wire-connected to the electrical connector 330. Exemplarily, the side edge of the first laser component 440 is close to the side wall of the third housing 206.

[0353] In some embodiments, the light emitting end of the first laser component 440 can be provided with a first lens 4181. The first lens 4181 can collimate the optical signal generated by the first laser component 440.

[0354] In some embodiments, the third housing 206 can be provided with a second laser component 450. The front end of the second laser component 450 can be towards one end of the third housing 206, and the rear end of the second laser component 450 can be close to the other end of the third housing 206. The second laser component 450 can be wire-connected to the electrical connector 330. Exemplarily, the side edge of the second laser component 450 is close to the side wall of the third housing 206.

[0355] In some embodiments, the light emitting end of the second laser component 450 can be provided with a second lens 4182. The second lens 4182 can collimate the optical signal generated by the second laser component 450.

[0356] In some embodiments, the third housing 206 can be provided with a third laser component 460. The front end of the third laser component 460 can be towards one end of the third housing 206, and the rear end of the third laser component 460 can be close to the other end of the third housing 206. The third laser component 460 can be wire-connected to the electrical connector 330. Exemplarily, the third laser component 460 can be located between the first laser component 440 and the second laser component 450.

[0357] In some embodiments, the third laser assembly 460 can be provided with a third lens 4183 at the light output end. The third lens 4183 can collimate the light signal generated by the third laser assembly 460.

[0358] In some embodiments, the third housing 206 can be provided with a sealing window 203, which can divide the accommodation cavity of the third housing 206 into two sub-accommodation cavities. The sealing window 203 can be sealingly connected to the third housing 206. For example, the bottom of the sealing window 203 can be connected to the bottom plate of the third housing 206, and the side of the sealing window 203 can be connected to the side wall of the third housing 206. The sealing window 203 can be obliquely arranged on the light output path of the first laser assembly 440, etc. For example, the oblique angle of the sealing window 203 can be 2-10°. The obliquely arranged sealing window 203 can reduce the reflection of the light signal reflected back by the wave separation assembly 5172, etc. to the first laser assembly 440, etc.

[0359] In some embodiments, the wave separation assembly 5172 can be located on one side of the sealing window 203, and the first laser assembly 440, the second laser assembly 450, and the third laser assembly 460 can be located on the other side of the sealing window 203.

[0360] In some embodiments, the third housing 206 can be provided with an isolator assembly 209. The isolator assembly 209 can be located at the light output end of the first laser assembly 440, etc., and can be used to block the fourth wavelength light signal reflected back to the first laser assembly 440, etc. For example, the isolator assembly 209 can include an isolator and an isolator support. The isolator support can be used to assemble the isolator to the third housing 206, so as to facilitate the assembly of the isolator into the third housing 206. The isolator assembly 209 can be located on one side of the sealing window 203, such as between the wave separation assembly 5172 and the sealing window 203, or on the other side of the sealing window 203.

[0361] In some embodiments, the isolator assembly 209 can include a first isolator, a second isolator, and a third isolator. The first isolator can be located on the light output path of the first laser assembly 440, the second isolator can be located on the light output path of the second laser assembly 450, and the third isolator can be located on the light output path of the third laser assembly 460.

[0362] FIG. 39 is a partial structure exploded view II of another optical module according to some embodiments. As shown in FIG. 39, in some embodiments, the side wall of the third housing 206 can be connected to the first light receiving assembly 530, the second light receiving assembly 520, and the third light receiving assembly 540. For example, the side wall of the third housing 206 can be provided with a connecting hole, through which the first light receiving assembly 530, etc. can be connected.

[0363] In some embodiments, one sidewall of the third housing 206 can be connected with the first light receiving component 530, and another sidewall of the third housing 206 can be connected with the second light receiving component 520 and the third light receiving component 540; or, one sidewall of the third housing 206 can be connected with the first light receiving component 530 and the second light receiving component 520, and another sidewall of the third housing 206 can be connected with the third light receiving component 540; or, one sidewall of the third housing 206 can be connected with the second light receiving component 520, and another sidewall of the third housing 206 can be connected with the first light receiving component 530 and the third light receiving component 540; etc.

[0364] In some embodiments, the optical module 200 can include a transition ring 210 connected with the third housing 206 and the fourth cover plate 208. For example, the bottom of the transition ring 210 can be connected with the top of the other end of the third housing 206, and the top of the transition ring 210 can be connected with the fourth cover plate 208. The side edge of the transition ring 210 can be sealingly connected with the sealing window 203.

[0365] In some embodiments, the surface of the transition ring 210 can be plated with a metal material layer such as gold, so as to reinforce the sealing connection between the transition ring 210 and the third housing 206 and the fourth cover plate 208 through the metal material layer. In this way, the connection between the third housing 206 and the fourth cover plate 208 can be reinforced by using the transition ring 210. In addition, only the surface of the transition ring 210 is plated with the metal material layer, the processing cost of the third housing 206 can be reduced.

[0366] In some embodiments, the third housing 206 can be provided with a fourth lens 5171 close to the fiber adapter 700. The fourth lens 5171 can collimate the optical signal output by the fiber adapter 700 and transmit it to the wave division component 5172, or converge the optical signal output by the wave division component 5172 and transmit it to the fiber adapter 700.

[0367] In some embodiments, the third housing 206 can be provided with a prism group. The prism group is used to change the transmission direction of the optical signal generated by the first laser component 440, the second laser component 450 or the third laser component 460. The prism group can be located between the sealing window 203 and the first laser component 440, etc.

[0368] In some embodiments, the third housing 206 can be provided with a TEC 490. The TEC 490 supports the first laser component 440, etc.

[0369] FIG. 40 is a structure diagram of a third housing according to some embodiments, FIG. 41 is a structure diagram of a third housing according to some embodiments, and FIG. 42 is a sectional view of a third housing according to some embodiments. As shown in FIGS. 40-42, in some embodiments, the third housing 206 can include a third bottom plate 2061. The third bottom plate 2061 can support the demultiplexing assembly 5172, the fourth lens 5171, or the first laser assembly 440, etc.

[0370] In some embodiments, the third housing 206 can include a first side plate 2062. The first side plate 2062 is connected to one side of the third bottom plate 2061 in the length direction. The first side plate 2062 can be connected to the first light receiving assembly 530, the second light receiving assembly 520, or the third light receiving assembly 540. The inner side of the first side plate 2062 can be formed with a first connecting surface 2621 for sealingly connecting the sealing window 203. Exemplarily, the first connecting surface 2621 is an inclined surface, and the inclination angle of the first connecting surface 2621 can be 2-10°, facilitating the inclined arrangement of the sealing window 203 on the third housing 206.

[0371] In some embodiments, the first side plate 2062 serves as a side wall of one side of the third housing 206, extending from one end of the third housing 206 to the other end of the third housing 206. Exemplarily, the outer side of the first side plate 2062 is a flat surface, facilitating the molding of the third housing 206.

[0372] In some embodiments, the third housing 206 can include a second side plate 2063. The second side plate 2063 is connected to the other side of the third bottom plate 2061 in the length direction. The second side plate 2063 can be connected to the first light receiving assembly 530, the second light receiving assembly 520, or the third light receiving assembly 540. The inner side of the second side plate 2063 can be formed with a second connecting surface 2631 for sealingly connecting the sealing window 203. The second connecting surface 2631 can be an inclined surface, and the inclination angle of the second connecting surface 2631 can be 2-10°, facilitating the inclined arrangement of the sealing window 203 on the third housing 206.

[0373] In some embodiments, the second side plate 2063 serves as a side wall of the other side of the third housing 206, extending from one end of the third housing 206 to the other end of the third housing 206. Exemplarily, the outer side of the second side plate 2063 is a flat surface, facilitating the molding of the third housing 206.

[0374] In some embodiments, the third housing 206 can include a third side plate 2064. The bottom of the third side plate 2064 can be connected to one end of the third bottom plate 2061, one end of the third side plate 2064 can be connected to one end of the first side plate 2062, and the other end of the third side plate 2064 can be connected to one end of the second side plate 2063. The third side plate 2064 can be connected to the fiber adapter 700. Exemplarily, a first connecting hole 2641 is formed on the third side plate 2064, and the first connecting hole 2641 communicates the inner cavity of the third housing 206 and the fiber adapter 700.

[0375] In some embodiments, the third housing 206 can include a fourth side plate 2065. One end of the fourth side plate 2065 can be connected to the top of the other end of the first side plate 2062, and the other end of the fourth side plate 2065 can be connected to the top of the other end of the second side plate 2063. The fourth side plate 2065 can be suspended above the other end of the third bottom plate 2061, and the fourth side plate 2065 forms a space 2066 with the third bottom plate 2061. The space 2066 can be embedded with the electrical connector 330. Exemplarily, one end of the space 2066 can pass through the bottom of the first side plate 2062, and the other end of the space 2066 can pass through the bottom of the second side plate 2063.

[0376] In some embodiments, a first recess 2611 can be formed on the third bottom plate 2061. The first recess 2611 is located at one end of the third bottom plate 2061, the first recess 2611 can be located at the side edge of the first side plate 2062 and the third side plate 2064, and the first recess 2611 is formed by the top surface of the third bottom plate 2061 being recessed downward. The fourth lens 5171 is arranged in the first recess 2611, and the depth of the first recess 2611 can be used to adjust the relative height of the optical axis of the fourth lens 5171 and the top surface of the third bottom plate 2061. The wavelength division assembly 5172 is arranged on the top surface of the third bottom plate 2061, so that the coupling efficiency of the optical signal between the fiber adapter 700 and the wavelength division assembly 5172 can be adjusted by the fourth lens 5171.

[0377] In some embodiments, a second recess 2612 can be formed on the third bottom plate 2061. The second recess 2612 is located at the other end of the third bottom plate 2061, the edge of the second recess 2612 is close to the space 2066, and the second recess 2612 is formed by the top surface of the third bottom plate 2061 being recessed downward. The TEC 490 can be arranged in the second recess 2612. Exemplarily, the bottom of the second recess 2612 supports the bottom of the TEC 490. The second recess 2612 can adjust the relative height of the first laser assembly 440 and the like and the top surface of the third bottom plate 2061, so as to ensure the coupling efficiency of the optical signal generated by the first laser assembly 440 and the like to the wavelength division assembly 5172.

[0378] In some embodiments, a third connecting surface 2613 is formed on the third bottom plate 2061. One end of the third connecting surface 2613 extends to the bottom of the first connecting surface 2621, and the other end of the third connecting surface 2613 extends to the bottom of the second connecting surface 2631. The third connecting surface 2613 seals the sealing window 203 and the third housing 206.

[0379] In some embodiments, a fourth connecting surface 2614 is formed on the third bottom plate 2061. The fourth connecting surface 2614 is lower than the top surface of the third bottom plate 2061 and connects the third connecting surface 2613. The fourth connecting surface 2614 can support the connecting sealing window 203. For example, one end of the third connecting surface 2613 extends to the inner side wall of the first side plate 2062, and the other end of the third connecting surface 2613 extends to the inner side wall of the second side plate 2063, facilitating sufficient assembly space for the sealing window 203. The third connecting surface 2613 is located at the edge of the second groove 2612, facilitating the assembly of the sealing window 203 and the third bottom plate 2061.

[0380] FIG. 43 is an exploded view of the third housing and the cover plate according to some embodiments, and FIG. 44 is a cross-sectional view of the third housing and the cover plate according to some embodiments. As shown in FIGS. 40-44, in some embodiments, the top of the third housing 206 is formed with a first fixing surface 2067. The first fixing surface 2067 is located at the top of the first side plate 2062, the second side plate 2063, and the third side plate 2064, and is lower than the top surface of the first side plate 2062, the second side plate 2063, and the third side plate 2064. The first fixing surface 2067 can be formed by concave from the top surface edge of the first side plate 2062, the second side plate 2063, and the third side plate 2064. The first fixing surface 2067 connects the third cover plate 207, facilitating the positioning of the third cover plate 207 and the third housing 206 through the first fixing surface 2067.

[0381] In some embodiments, the first side plate 2062 is formed with a second fixing surface 2622. The second fixing surface 2622 is used to fix the adapter ring 210. For example, one end of the second fixing surface 2622 extends to the top of the first connecting surface 2621, and the other end of the second fixing surface 2622 extends to the top of the fourth side plate 2065.

[0382] In some embodiments, the second side plate 2063 is formed with a third fixing surface 2632. The third fixing surface 2632 is used to fix the adapter ring 210. For example, one end of the third fixing surface 2632 extends to the top of the third connecting surface 2031, and the other end of the third fixing surface 2632 extends to the top of the fourth side plate 2065.

[0383] In some embodiments, the first side plate 2062 is formed with a first inclined surface 2623. The second fixed surface 2622 is lower than the first fixed surface 2067, one end of the first inclined surface 2623 is connected to the first fixed surface 2067, and the other end of the first inclined surface 2623 is connected to one end of the second fixed surface 2622. The first inclined surface 2623 can facilitate avoiding the adapter ring 210 and facilitate sealing and welding the adapter ring 210 and the third shell 206 and the fourth cover plate 208.

[0384] In some embodiments, the second side plate 2063 is formed with a second inclined surface 2633. The third fixed surface 2632 is lower than the first fixed surface 2067, one end of the second inclined surface 2633 is connected to the first fixed surface 2067, and the other end of the second inclined surface 2633 is connected to one end of the third fixed surface 2632. The second inclined surface 2633 can facilitate avoiding the adapter ring 210 and facilitate sealing and welding the adapter ring 210 and the third shell 206 and the fourth cover plate 208.

[0385] In some embodiments, the first side plate 2062 can be provided with a fourth connecting hole 2624, which communicates with the inner cavity of the third shell 206. The fourth connecting hole 2624 is used to connect the second light receiving assembly 520.

[0386] In some embodiments, the second side plate 2063 can be provided with a fifth connecting hole 2634, which communicates with the inner cavity of the third shell 206. The fifth connecting hole 2634 is used to connect the first light receiving assembly 530.

[0387] In some embodiments, the second side plate 2063 can be provided with a third connecting hole 2635, which communicates with the inner cavity of the third shell 206. The third connecting hole 2635 is used to connect the third light receiving assembly 540.

[0388] In some embodiments, the fifth connecting hole 2634 can be located at one end of the second side plate 2063, one side of the fifth connecting hole 2634 is close to the third side plate 2064, the third connecting hole 2635 is located at the other side of the fifth connecting hole 2634, and the fourth connecting hole 2624 can be opposite to the fifth connecting hole 2634.

[0389] In some embodiments, the third cover plate 207 can include a cover plate body 2071. The cover plate body 2071 covers and connects the first fixed surface 2067.

[0390] In some embodiments, the third cover plate 207 can include an inclined portion 2072. The inclined portion 2072 covers and connects the first inclined surface 2623 and the second inclined surface 2633, one end of the inclined portion 2072 is connected to the end side of the cover plate body 2071, and the other end of the inclined portion 2072 abuts against the outer side of the adapter ring 210.

[0391] FIG. 45 is a structural diagram of another wave splitting assembly according to some embodiments. As shown in FIG. 45, in some embodiments, the wave splitting assembly 5172 can include a first film 51728. The first film 51728 can be located at the side of the second wave plate 51273, and the first film 51728 can be used to reflect the light signal output from the second wave plate 51273. Exemplarily, the second wave plate 51273 can support the first film 51728. The first film 51728 can include a prism, and a film that reflects the light signal of the first wavelength can be disposed on the side of the prism.

[0392] In some embodiments, the wave splitting assembly 5172 can include a second film 51729. The second film 51729 can be located at the side of the fifth wave plate 51726, and the second film 51729 can be used to reflect the light signal output from the fifth wave plate 51726; or, transmit the light signal transmitted by the second film 51729 to the fifth wave plate 51726, so as to be transmitted to the substrate 51721 through the fifth wave plate 51726. Exemplarily, the fifth wave plate 51726 can support the second film 51729. The second film 51729 can include a film that reflects the light signal of the second wavelength and transmits the light signal of the sixth wavelength, so that the second film 51729 can reflect the light signal incident from one side of the second film 51729 and transmit the light signal incident from the other side of the second film 51729.

[0393] In some embodiments, the wave splitting assembly 5172 can include a third film 51270. The third film 51270 can be located at the side of the sixth wave plate 51727, and the third film 51270 can be used to reflect the light signal output from the sixth wave plate 51727; or, transmit the light signal transmitted by the third film 51270 to the sixth wave plate 51727, so as to be transmitted to the substrate 51721 through the sixth wave plate 51727. Exemplarily, the sixth wave plate 51727 can support the third film 51270. The third film 51270 can include a film that reflects the light signal of the third wavelength and transmits the light signal of the fifth wavelength, so that the third film 51270 reflects the light signal incident from one side of the third film 51270 and transmits the light signal incident from the other side of the third film 51270.

[0394] FIG. 46 is an internal structural sectional view of another optical module according to some embodiments, and a transmission path of a light signal is shown in FIG. 46. As shown in FIG. 46, in some embodiments, the isolator assembly 209 is located at one side of the sealed window 203 and close to the wave splitting assembly 5172, and the first laser assembly 440 and the like are located at the other side of the sealed window 203.

[0395] The first laser assembly 440 generates a fourth wavelength light signal. The fourth wavelength light signal is transmitted to the first lens 4181, collimated by the first lens 4181, transmitted to the sealing window 203 and refracted through the sealing window 203. The fourth wavelength light signal transmitted through the sealing window 203 is transmitted to the isolator assembly 209, transmitted through the isolator assembly 209 and transmitted to the fourth wave plate 51725, transmitted through the fourth wave plate 51725 to the substrate 51721, transmitted through the substrate 51721 to the first wave plate 51722, transmitted through the first wave plate 51722 to the fiber adapter 700 through the fourth lens 5171.

[0396] The second laser assembly 450 generates a fifth wavelength light signal. The fifth wavelength light signal is transmitted to the second lens 4182, collimated by the second lens 4182, transmitted to the sealing window 203 and refracted through the sealing window 203. The fifth wavelength light signal transmitted through the sealing window 203 is transmitted to the isolator assembly 209, transmitted through the isolator assembly 209 and transmitted to the third film 51270, transmitted through the third film 51270 to the sixth wave plate 51727, transmitted through the sixth wave plate 51727 to the substrate 51721, transmitted through the third wave plate 51724 after multiple reflections of the equal wave plate to the first wave plate 51722, transmitted through the first wave plate 51722 to the fiber adapter 700 through the fourth lens 5171.

[0397] The third laser assembly 460 generates a sixth wavelength light signal. The sixth wavelength light signal is transmitted to the third lens 4183, collimated by the third lens 4183, transmitted to the sealing window 203 and refracted through the sealing window 203. The sixth wavelength light signal transmitted through the sealing window 203 is transmitted to the isolator assembly 209, transmitted through the isolator assembly 209 and transmitted to the second film 51279, transmitted through the second film 51279 to the fifth wave plate 51726, transmitted through the fifth wave plate 51726 to the substrate 51721, transmitted through the second wave plate 51723 after multiple reflections of the equal wave plate to the first wave plate 51722, transmitted through the first wave plate 51722 to the fiber adapter 700 through the fourth lens 5171.

[0398] The first wavelength light signal input through the fiber adapter 700 is collimated by the fourth lens 5171, transmitted to the first wave plate 51722, transmitted through the first wave plate 51722 to the substrate 51721, transmitted through the fourth wave plate 51725 after reflection, transmitted to the second wave plate 51723, transmitted through the second wave plate 51723 to the first film 51728, reflected by the first film 51728 to the first light receiving assembly 530.

[0399] The second wavelength optical signal input through the fiber adapter 700 is collimated by the fourth lens 5171, transmitted to the first wave plate 51722, transmitted to the substrate 51721 through the first wave plate 51722, reflected by the fourth wave plate 51725, transmitted to the fifth wave plate 51726, transmitted to the second film 51279 through the fifth wave plate 51726, reflected by the second film 51279, and transmitted to the second light receiving component 520.

[0400] The third wavelength optical signal input through the fiber adapter 700 is collimated by the fourth lens 5171, transmitted to the first wave plate 51722, transmitted to the substrate 51721 through the first wave plate 51722, reflected by the fourth wave plate 51725, transmitted to the sixth wave plate 51727, transmitted to the third film 51720 through the sixth wave plate 51727, reflected by the third film 51720, and transmitted to the third light receiving component 540.

[0401] Figure 47 is a device layout diagram in another third housing according to some embodiments. As shown in Figure 47, in some embodiments, a prism group 211 can be arranged in the third housing 206. The prism group 211 is located on the output light path of the first laser component 440, the second laser component 450 and the third laser component 460, the prism group 211 is located on the input light path of the isolator component 209, and the prism group 211 can multiplex the light paths of the optical signals generated by the first laser component 440, the second laser component 450 and the third laser component 460. For example, the isolator component 209 is located on one side of the sealing window 203, and the prism group 211 is located on the other side of the sealing window 203.

[0402] The optical signals generated by the first laser component 440, the second laser component 450 and the third laser component 460 are transmitted to the prism group 211, multiplexed by the prism group 211, transmitted to the isolator component 209, transmitted to the fourth wave plate 51725 through the isolator component 209, transmitted to the substrate 51721 through the fourth wave plate 51725, transmitted to the first wave plate 51722 through the substrate 51721, and transmitted to the fiber adapter 700 through the fourth lens 5171. The light paths of the first wavelength optical signal, the second wavelength optical signal and the third wavelength optical signal input through the fiber adapter 700 can refer to the light paths shown in Figure 46.

[0403] FIG. 48 is an exploded view of another light receiving component according to some embodiments. FIG. 49 is a partial exploded view of another light receiving component according to some embodiments. As shown in FIG. 48 and FIG. 49, in some embodiments, the light receiving component 500a can include a first cavity, which can include a first housing 510a, and the inner cavity of the first housing 510a can be provided with a first light assembly 517b. The first light assembly 517b can transmit the emitted 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 can incident the split light signal to the corresponding light receiving assembly.

[0404] In some embodiments, the first light assembly 517b can include a first lens 5171 for collimating / converging 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.

[0405] In some embodiments, the first light assembly 517b can include a splitting assembly 5172b. The first end of the splitting assembly 5172b can be provided corresponding to the first end of the light receiving component 500a, and the second end of the splitting assembly 5172b can be provided corresponding to the second end of the light receiving component 500a, so that the splitting assembly 5172b can be arranged along the length direction of the light receiving component 500a.

[0406] The splitting assembly 5172b can be arranged along the length direction of the light receiving component 500a, i.e. the splitting assembly 5172b can be arranged along the length direction of the first housing 510a, so as to reduce the width dimension of the first housing 510a, and further reduce the width dimension of the light receiving component 500a. When the splitting assembly 5172b is arranged along the length direction of the first housing 510a, the width dimension of the first housing 510a that needs to accommodate the splitting assembly 5172b can be reduced to meet the demand. Since the length dimension of the receiving pin of the light receiving assembly is small, the width dimension of the first housing 510a is reduced, and the width dimension of the light receiving component 500a is also reduced.

[0407] In some embodiments, the splitting assembly 5172b can be located between the first lens 5171 and the light emitting component 400, and the splitting assembly 5172b can be arranged along the length direction of the light receiving component 500a, so that the splitting assembly 5172b can transmit the emitted light signal emitted by the light emitting component 400 to the first lens 5171. The splitting assembly 5172a can split the collimated light signal of the first lens 5171 according to the wavelength. For example, the splitting assembly 5172a can split 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 the wavelength.

[0408] The wavelength division assembly 5172b can transmit the emission light signal (i.e., the emission light beam) emitted by the light emission component 400 to the first lens 5171, and can also transmit the received light signal (i.e., the received light beam) collimated by the first lens 5171 according to the wavelength, and can reduce the distance of the emission light beam and the received light beam in the width direction of the first housing 510, and thus the width dimension of the light receiving component 500a can be reduced.

[0409] In some embodiments, the first end of the wavelength division assembly 5172b has a receiving light entrance, and the second end of the wavelength division assembly 5172b has an emission light entrance, the emission light signal emitted by the light emission component 400 is incident to the emission light entrance of the second end of the wavelength division assembly 5172b and is emitted through the receiving light entrance of the first end of the wavelength division assembly 5172b, and the received light signal transmitted by the fiber adapter 700 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 wavelength division assembly 5172a, and is reflected through the emission light entrance of the second end of the wavelength division assembly 5172b, and then is divided into the first wavelength light signal, the second wavelength light signal and the third wavelength light signal and is emitted. 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. The optical path of the emission light signal and the optical path of the received light signal coincide in the width direction of the light receiving component 500a, so as to reduce the width dimension of the light receiving component 500a.

[0410] In some embodiments, the wavelength division assembly 5172b has a first light exit, a second light exit and a third light exit, so that the first wavelength light signal after being divided by the wavelength division assembly 5172b is emitted through the first light exit of the wavelength division assembly 5172b, the third wavelength light signal is emitted through the second light exit of the wavelength division assembly 5172a, and the second wavelength light signal is emitted through the third light exit of the wavelength division assembly 5172a.

[0411] The first wavelength light signal, the second wavelength light signal and the third wavelength light signal after being divided are respectively incident to the corresponding light receiving assembly. For example, the first wavelength light signal is incident to the second light receiving assembly, the second wavelength light signal is incident to the third light receiving assembly, and the third wavelength light signal is incident to the first light receiving assembly. The first wavelength light signal is incident to the second light receiving assembly after being emitted through the second light exit, the third wavelength light signal is incident to the first light receiving assembly after being emitted through the first light exit, and the second wavelength light signal is incident to the third light receiving assembly after being emitted through the third light exit, so as to complete the transmission of the received light signal after being divided.

[0412] In some embodiments, the first end of the wave splitting component 5172b and the second end of the wave splitting component 5172b are arranged in parallel, so that the emitted light signals incident to the second end of the wave splitting component 5172b and the emitted light signals emitted through the first end of the wave splitting component 5172b are parallel to each other.

[0413] In some embodiments, the first end of the wave splitting component 5172b has a second preset range of inclination angle, so that the received light signals incident to the wave splitting component 5172b including the first wavelength, the second wavelength and the third wavelength can be separated into the first wavelength light signals, the second wavelength light signals and the third wavelength light signals through the wave splitting component 5172b. For example, the second preset range is 13.5°±1°.

[0414] In some embodiments, the first light assembly 517b can include a first reflective sheet 5173. The first reflective sheet 5173 can be located on the output light path at the first light output of the wave splitting component 5172b. The first reflective sheet 5173 is used for reflection of the light signals, so that the light signals emitted at the first light output can be reflected out.

[0415] In some embodiments, the first light assembly 517b can include a second reflective sheet. The second reflective sheet can be located on the output light path at the second light output of the wave splitting component 5172b. The second reflective sheet is used for reflection of the light signals, so that the light signals emitted at the second light output can be reflected out.

[0416] In some embodiments, the first light assembly 517b can include a first reflective sheet 5176a. The first reflective sheet 5176a can be located on the output light path at the second light output of the wave splitting component 5172b. The first reflective sheet 5176a is used for reflection of the light signals, so that the light signals emitted at the second light output can be reflected out. Compared with the second reflective sheet, the first reflective sheet 5176a has a larger bottom area, so that the first reflective sheet 5176a can be placed on the bottom plate 5161 instead of being in contact with the side wall of the first housing 510a.

[0417] In some embodiments, the first light assembly 517b can include a third reflective sheet. The third reflective sheet can be located on the output light path at the third light output of the wave splitting component 5172b. The third reflective sheet is used for reflection of the light signals, so that the light signals emitted at the third light output can be reflected out.

[0418] In some embodiments, the first light assembly 517b can include a second reflecting element 5174a. The second reflecting element 5174a can be located on the output light path at the third light exit of the wave division assembly 5172b. The second reflecting element 5174a is used for the reflection of the optical signal so that the optical signal emitted at the third light exit can be reflected out. The second reflecting element 5174a has a larger bottom area relative to the third reflecting sheet, so that the second reflecting element 5174a can be placed on the bottom plate 5161 instead of being in contact with the side wall of the first shell 510a.

[0419] As shown in FIGS. 48 and 49, in some embodiments, the first shell 510a can include a first side wall 511, and the first side wall 511 can be provided with a first connecting hole 5111.

[0420] In some embodiments, the first shell 510a can include a second side wall 512a, and one end of the second side wall 512a can be connected to one end of the first side wall 511. The second side wall 512a can be provided with a fourth connecting hole 5121a and a fifth connecting hole 5122a, the fourth connecting hole 5121a can be used to place the third light receiving assembly 540, and the fifth connecting hole 5122a can be used to place the second light receiving assembly 520, so that the second light receiving assembly 520 and the third light receiving assembly 540 can be located on the second side wall 512a of the first shell 510a, that is, the second light receiving assembly 520 and the third light receiving assembly 540 can be located on the same side of the light receiving component 500a.

[0421] The receiving rate of the second light receiving assembly 520 is greater than that of the third light receiving assembly 540, the receiving light sensitive surface of the second light receiving assembly 520 is smaller than that of the third light receiving assembly 540, and the distance between the converging lens of the second light receiving assembly 520 and the receiving light sensitive surface of the light receiving chip is greater than that between the converging lens of the third light receiving assembly 540 and the receiving light sensitive surface of the light receiving chip. In order to place the second light receiving assembly 520 in the fifth connecting hole 5122a and the third light receiving assembly 540 in the fourth connecting hole 5121a, in some embodiments, a first step 5123a can be provided in the middle of the second side wall 512a, and the first step 5123a can be located between the fourth connecting hole 5121a and the fifth connecting hole 5122a. The presence of the first step 5123a makes the area where the fourth connecting hole 5121a is located protrude from the area where the fifth connecting hole 5122a is located, that is, the depth dimension of the fourth connecting hole 5121a is greater than that of the fifth connecting hole 5122a, so that the second light receiving assembly 520 can be placed in the fifth connecting hole 5122a, and the third light receiving assembly 540 can be placed in the fourth connecting hole 5121a, thereby improving the connection stability of the fifth connecting hole 5122a and the second light receiving assembly 520, and the connection stability of the fourth connecting hole 5121a and the third light receiving assembly 540.

[0422] In some embodiments, the first shell 510a 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 512a. The third side wall 513 can be provided with a second connecting hole 5131, and the isolator 521 can be placed in the second connecting hole 5131.

[0423] In some embodiments, the first shell 510a can include a fourth side wall 514a, one end of the fourth side wall 514a can be connected with the other end of the third side wall 513, and the other end of the fourth side wall 514a can be connected with the other end of the first side wall 511. One end of the fourth side wall 514a can be provided with a third connecting hole 5141, and the first light receiving assembly 530 can be placed in the third connecting hole 5141, so that the first light receiving assembly 530 can be located on the fourth side wall 514a of the first shell 510a, that is, the first light receiving assembly 530 can be located on the other side of the light receiving component 500a.

[0424] In some embodiments, the fourth side wall 514a can be provided with a second step 5142 in the middle, the first end of the second step 5142 is connected with the area where the third connecting hole 5141 is located, and the second end of the second step 5142 is connected with a first connecting area 5147. The first connecting area 5147 protrudes from the area where the third connecting hole 5141 is located, and can provide a containing space for the first light receiving assembly 530 inserted into the third connecting hole 5141.

[0425] In some embodiments, the other end of the fourth side wall 514a can be provided with a third step 5146, the first end of the third step 5146 is connected with the first connecting area 5147, the second end of the third step 5146 is connected with a second connecting area 5145, and the second connecting area 5145 protrudes from the first connecting area 5147. Not only can it ensure the width size of the first shell near the fiber optic adapter, so that the other end of the first shell 510a can be welded and connected with the fiber optic adapter 700, but also can avoid the interference between the first shell and the shell of the optical module.

[0426] The third connecting hole 5141, the second step 5142, the first connecting area 5147, the third step 5146, and the second connecting area 5145 are provided, so that the fourth side wall 514a is stepped.

[0427] One of the first light receiving component 530, the second light receiving component 520 and the third light receiving component 540 can be located on one side wall of the first shell 510a, and the other two light receiving components can be located on the other side wall of the first shell 510a, so that one of the first light receiving component 530, the second light receiving component 520 and the third light receiving component 540 can be located on one side of the light receiving part 500a, and the other two light receiving components can be located on the other side of the light receiving part 500a. For example, the second light receiving component 520 and the third light receiving component 540 can be located on the second side wall of the first shell 510a, and the first light receiving component 530 can be located on the fourth side wall of the first shell 510a.

[0428] In some embodiments, the first shell 510a can include a bottom plate 5161. The bottom plate 5161 can be connected with the bottom of the first side wall 511, the second side wall 512a, the third side wall 513 and the fourth side wall 514a, so that the first shell 510a can form a containing cavity 516a. The containing cavity 516a can be the inner cavity of the first shell 510a, so that the containing cavity 516a can be in communication with the first connecting hole 5111, the second connecting hole 5131, the third connecting hole 5141, the fourth connecting hole 5121a and the fifth connecting hole 5122a.

[0429] The material of the bottom plate 5161 can be stainless steel, and the bottom plate 5161 and the first lens 5171 are connected by the first glue. The expansion coefficients of the bottom plate 5161 and the first lens 5171 are quite different, and the bonding stability between the bottom plate 5161 and the first lens 5171 is poor, which causes the separation of the first lens 5171 and the bottom plate 5161. In order to solve this problem, in some embodiments, a second substrate 5181 can be arranged on the bottom plate 5161, the bottom plate 5161 and the second substrate 5181 can be bonded by the first glue, the first lens 5171 can be arranged on the second substrate 5181, and the first lens 5171 and the second substrate 5181 can be bonded by the second glue. The expansion coefficients of the bottom plate 5161, the second substrate 5181 and the first lens 5171 gradually decrease, and the bonding stability between the bottom plate 5161 and the second substrate 5181 and the bonding stability between the second substrate 5181 and the first lens 5171 are both greater than the bonding stability between the bottom plate 5161 and the first lens 5171, which avoids the separation of the first lens 5171 and the bottom plate 5161.

[0430] In some embodiments, the third substrate 5182 can be arranged on the bottom plate 5161, and the third substrate 5182 can be arranged with the wave separation component 5172b, the first reflecting piece 5176a, and the second reflecting piece 5174a. The height of the wave separation component 5172b, the first reflecting piece 5176a, and the second reflecting piece 5174a can be increased, so that the central axis of the first lens 5171 coincides with the central axis of the receiving light-in light of the wave separation component 5172b, the central axis of the second light-out light of the wave separation component 5172b coincides with the central axis of the first reflecting piece 5176a, and the central axis of the third light-out light of the wave separation component 5172b coincides with the central axis of the second reflecting piece 5174a. In this way, the wave separation component 5172b can receive the collimated received light signal of the first lens 5171, the first reflecting piece 5176a can receive the light signal emitted from the first light-out light, and the second reflecting piece 5174a can receive the light signal emitted from the third light-out light.

[0431] In some embodiments, the support plate 5183 can be arranged on the bottom plate 5161, and the support plate 5183 can be arranged with the first reflecting piece 5173. The height of the first reflecting piece 5173 can be increased, so that the central axis of the first reflecting piece 5173 coincides with the central axis of the first light-out light of the wave separation component 5172b. In this way, the first reflecting piece 5173 can receive the light signal emitted from the first light-out light. The second substrate 5181 is located between the support plate 5183 and the fourth side wall 514a to limit the position of the second substrate 5181. The third substrate 5182 is located between the support plate 5183 and the third side wall 513 to limit the position of the third substrate 5182.

[0432] In some embodiments, the support plate 5183 can include a first support surface 51831, and the first support surface 51831 can be flush with the bottom plate 5161. The first support surface 51831 can be in contact with the bottom surface of the first reflecting piece 5173 to support the first reflecting piece 5173.

[0433] In some embodiments, the support plate 5183 can include a second support surface 51832, and the second support surface 51832 can be connected with the first support surface 51831. The second support surface 51832 can be perpendicular to the bottom plate 5161. The second support surface 51832 can be in contact with the side surface of the first reflecting piece 5173. The first reflecting piece 5173 is in contact with the first support surface 51831 and the second support surface 51832, which can increase the contact area between the first reflecting piece 5173 and the support plate 5183 and improve the connection stability between the first reflecting piece 5173 and the support plate 5183.

[0434] As shown in FIG. 49, the distance between the central axis of the second connecting hole 5131 and the fourth side wall 514a is less than the distance between the central axis of the second connecting hole 5131 and the second side wall 512a. From the second side wall 512a to the fourth side wall 514a, the distance between the second end of the wave group component 5172b and the third side wall 513 gradually increases, so that the second end of the wave group component 5172b is obliquely arranged, and then the received optical signal can be reflected between the wave plates of the wave group component 5172b.

[0435] FIG. 50 is a partial structure diagram of another optical receiving component provided according to some embodiments. FIG. 51 is an optical path diagram of another optical receiving component provided according to some embodiments. As shown in FIG. 50 and FIG. 51, in some embodiments, the wave group component 5172b 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 optical receiving component 500a, and the second end surface of the first substrate 51721 is arranged corresponding to the second end of the optical receiving component 500a, so that the first substrate 51721 is arranged along the length direction of the optical receiving component 500a. 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.

[0436] From the second side wall 512a to the fourth side wall 514a, the distance between the second end surface of the first substrate 51721 and the third side wall 513 gradually increases, so that the second end surface of the first substrate 51721 is obliquely arranged.

[0437] The oblique angle of the second end surface of the first substrate 51721 is in the second preset range, so that the oblique angle of the second end of the wave group component 5172b is in the second preset range. 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 oblique angle of the first end of the wave group component 5172b is in the second preset range, and then the optical signal incident to the first substrate 51721 and the optical signal emitted from the first substrate 51721 are parallel to each other.

[0438] The first end surface of the first substrate 51721 can face the first lens 5171, and the second end surface of the first substrate 51721 can face the second connecting hole 5131, so that the first substrate 51721 can be arranged along the horizontal direction of the first cavity.

[0439] In some embodiments, the wave splitting component 5172b can include a first wave plate 51722. The first wave plate 51722 can be disposed 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 can be located in the light emitting direction of the light emitting component 400, so that the emitted light signal can be transmitted out through the first wave plate 51722. The first wave plate 51722 is the receiving light entrance of the first end of the wave splitting component 5172a. The first wave plate 51722 can allow the emitted light signal and the received light signal to pass through.

[0440] The central axis of the first wave plate 51722 can coincide with the central axis of the first lens 5171, so that the received light signal collimated by the first lens 5171 can be incident on the first wave plate 51722, and the emitted light signal of the first wave plate 51722 can be focused and coupled by the first lens 5171.

[0441] In some embodiments, the wave splitting component 5172b can include a second wave plate 51723b. The second wave plate 51723b can be disposed on the first end surface of the first substrate 51721. One side of the second wave plate 51723b can be connected with the first wave plate 51722. The second wave plate 51723b can be used for reflection and transmission of the received light signal.

[0442] The second wave plate 51723b can be a band-pass filter, which can allow signals within a certain frequency range to pass through and block signals of other frequencies. For example, the second wave plate 51723b 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.

[0443] The second wave plate 51723b can be the first light exit of the first end of the wave splitting component 5172b, so that the first wavelength light signal is transmitted out through the second wave plate 51723b.

[0444] The first reflecting plate 5173 can be located on the transmission light path of the second wave plate 51273b, so that the first reflecting plate 5173 can receive the received light signal transmitted by the second wave plate 51723b. For example, the first reflecting plate 5173 can receive the first wavelength light signal.

[0445] In some embodiments, the wave splitting component 5172b can include a third wave plate 51724b. The third wave plate 51724b can be disposed on the first end surface of the first substrate 51721. One side of the third wave plate 51724b can be connected with the other side of the second wave plate 51273. The third wave plate 51724b is the first light exit of the first end of the wave splitting component 5172b.

[0446] In some embodiments, the wave splitting component 5172b can include a fourth wave plate 51725b. The fourth wave plate 51725b can be disposed on the first end surface of the first substrate 51721. One side of the fourth wave plate 51725b can be connected with the third wave plate 51724b. The fourth wave plate 51725b can be configured to receive the reflection of the received optical signal.

[0447] In some embodiments, the wave splitting component 5172b can include a fifth wave plate 51726b. The fifth wave plate 51726b can be disposed on the second end surface of the first substrate 51721. The fifth wave plate 51726b can be disposed opposite to the first wave plate 51722, and the fifth wave plate 51726b can be located on the transmission light path of the first wave plate 51722, such that the fifth wave plate 51726b can receive the transmission of the received optical signal by the first wave plate 51722. The fifth wave plate 51726b can be located between the first substrate 51721 and the second connecting hole 5131. The fifth wave plate 51726b can be configured as the receiving light entrance of the second end of the wave splitting component 5172a. The fifth wave plate 51726b can be configured to allow the reflection of the received optical signal, and can be configured to allow the transmission of the emitted optical signal.

[0448] The central axis of the fifth wave plate 51726b can coincide with the central axis of the second connecting hole 5131, such that the emitted optical signal incident on the first cavity through the second connecting hole 5131 is incident on the fifth wave plate 51726b.

[0449] The first wave plate 51722 can be located on the transmission light path of the fifth wave plate 51726b, such that the first wave plate 51722 can receive the transmission of the emitted optical signal by the fifth wave plate 51726b.

[0450] The second wave plate 51723b can be located on the reflection light path of the fifth wave plate 51726b, such that the second wave plate 51723b can receive the reflection of the received optical signal by the fifth wave plate 51726b.

[0451] In some embodiments, the wave splitting component 5172b can include a sixth wave plate 51727b. The sixth wave plate 51727b can be disposed on the second end surface of the first substrate 51721. The sixth wave plate 51727b can be disposed opposite to the second wave plate 51723b, and the sixth wave plate 51727b can be located on the reflection light path of the second wave plate 51723b, such that the sixth wave plate 51727b can receive the reflection of the received optical signal by the second wave plate 51723b. The sixth wave plate 51727b can be configured to allow the reflection of the received optical signal. The sixth wave plate 51727b can be connected with the fifth wave plate 51726b.

[0452] The third wave plate 51724b can be located on the reflection light path of the sixth wave plate 51727b, so that the third wave plate 51724b can receive the received light signal reflected by the sixth wave plate 51727b.

[0453] The sixth wave plate 51727b is closer to the second side wall 512a than the fifth wave plate 51726b, and the distance between the second end surface of the first substrate 51721 and the third side wall 513 gradually increases from the second side wall 512a to the fourth side wall 514a, so that the sixth wave plate 51727b reflects the received light signal received to the second wave plate 51723b, and the wave splitting assembly 5172b realizes wave splitting.

[0454] In some embodiments, the wave splitting assembly 5172b can include a seventh wave plate 51728b. The seventh wave plate 51728b can be disposed on the second end surface of the first substrate 51721. The seventh wave plate 51728b can be oppositely disposed with the third wave plate 51724b, and the seventh wave plate 51728b can be located on the reflection light path of the third wave plate 51724b, so that the seventh wave plate 51724b can receive the received light signal reflected by the third wave plate 51724b. The seventh wave plate 51728b can be connected with the sixth wave plate 51727b. The seventh wave plate 51728b can allow the received light signal to be reflected, or can allow the received light signal to be transmitted.

[0455] The seventh wave plate 51728b can be a low-pass wave plate, which can allow low-frequency signals to pass through and block high-frequency signals. For example, the seventh wave plate 51728b can allow the third wavelength light signal to be transmitted, and can allow the first wavelength light signal and the second wavelength light signal to be reflected.

[0456] The seventh wave plate 51728b can serve as a second light exit at the second end of the wave splitting assembly 5172b, so that the third wavelength light signal is transmitted out through the seventh wave plate 51728b.

[0457] The fourth wave plate 51725b can be located on the reflection light path of the seventh wave plate 51728b, so that the fourth wave plate 51725b can receive the received light signal reflected by the seventh wave plate 51728b. For example, the fourth wave plate 51725b can receive the second wavelength light signal.

[0458] The first reflecting member 5176a can be located on the transmission light path of the seventh wave plate 51728b, so that the first reflecting member 5176a can receive the received light signal transmitted by the seventh wave plate 51728b. For example, the first reflecting member 5176a can receive the third wavelength light signal.

[0459] In some embodiments, the wave separation component 5172b can include an eighth wave plate 51729b. The eighth wave plate 51729b can be disposed on the second end surface of the first substrate 51721. The eighth wave plate 51729b can be disposed opposite to the fourth wave plate 51725b, and the eighth wave plate 51729b can be located on the reflected light path of the fourth wave plate 51725b, so that the eighth wave plate 51729b can receive the received light signal reflected by the fourth wave plate 51725b. The eighth wave plate 51729b can be connected with the seventh wave plate 51278b. The eighth wave plate 51729b can allow the received light signal to be transmitted.

[0460] The eighth wave plate 51729b can be a high-pass wave plate, which can allow high-frequency signals to pass through and block low-frequency signals. For example, the eighth wave plate 51729b 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.

[0461] The eighth wave plate 51729b can serve as a third light exit at the second end of the wave separation component 5172b, so that the second wavelength light signal is transmitted out through the eighth wave plate 51729b.

[0462] The second reflecting element 5174a can be located on the transmitted light path of the eighth wave plate 51279b, so that the second reflecting element 5174a can receive the received light signal transmitted by the eighth wave plate 51729b. For example, the first reflecting element 5176a can receive the second wavelength light signal.

[0463] In some embodiments, the third wave plate 51724a can be a low-pass wave plate, 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 light signal to be transmitted, and can also allow the first wavelength light signal and the second wavelength light signal to be reflected.

[0464] The inclination angle of the first substrate 51721 of the wave separation component 5172a is small, and the three similar wavelength light signals can be separated by the wave separation component 5172a. The inclination angle of the first substrate 51721 of the wave separation component 5172b is increased, the number of wave plates of the wave separation component 5172b is increased, and the number of reflections of the received light signal in the wave separation component 5172b is increased, thereby improving the isolation. The incident angles of the received light signal with multiple reflections and the received light signal with few reflections are different, and the incident angle affects the band-pass property of the wave plate.

[0465] From the second side wall 512a to the fourth side wall 514a, the eighth wave plate 51729b, the seventh wave plate 51278b, the sixth wave plate 51727b and the fifth wave plate 51726b are sequentially arranged at the second end of the first substrate 51721, and the fourth wave plate 51725b, the third wave plate 51724b, the second wave plate 51723b and the first wave plate 51722c are sequentially arranged at the first end of the first substrate 51721. The eighth wave plate 51729b, the seventh wave plate 51278b, the sixth wave plate 51727b and the fifth wave plate 51726b can be sequentially connected to reduce the length of the second end face of the first substrate 51721. The fourth wave plate 51725b, the third wave plate 51724b, the second wave plate 51723b and the first wave plate 51722c can be sequentially connected to reduce the length of the first end face of the first substrate 51721.

[0466] As shown in FIG. 51, the distance between the center axis of the second connecting hole 5131 and the fourth side wall 514a is less than the distance between the center axis of the second connecting hole 5131 and the second side wall 512a, the distance between the light emitting light entrance (i.e., the fifth wave plate 51726b) of the wave splitting assembly 5172b and the fourth side wall 514a is less than the distance between the light emitting light entrance (i.e., the fifth wave plate 51726b) and the second side wall 512a, the distance between the light receiving light entrance (i.e., the first wave plate 51722) of the wave splitting assembly 5172b and the fourth side wall 514a is less than the distance between the light receiving light entrance (i.e., the first wave plate 51722) and the second side wall 512a, so that the distance between the optical axis of the emitted light signal and the fourth side wall is less than the distance between the optical axis of the emitted light signal and the second side wall, which can reduce the number of intersections of the emitted light signal and the received light signal, and further reduce the interference between the emitted light signal and the received light signal.

[0467] Compared with the wave splitting assembly 5172a, the width dimension of the first substrate 51721 of the wave splitting assembly 5172b is increased, so that the first substrate 51721 can be attached with the eighth wave plate 51729b, the seventh wave plate 51278b, the sixth wave plate 51727b, the fifth wave plate 51726b, the fourth wave plate 51725b, the third wave plate 51724b, the second wave plate 51723b and the first wave plate 51722c.

[0468] Compared with the wave splitting assembly 5172a, the length dimension of the first substrate 51721 of the wave splitting assembly 5172b is reduced to reduce the transmission path of the received light signal and the reflected light signal, and reduce the loss.

[0469] In some embodiments, the center distance between any two adjacent wave plates of the fifth wave plate 51726b, the sixth wave plate 51727b, the seventh wave plate 51278b and the eighth wave plate 51729b is greater than a second preset value, so as to increase the distance between the third wavelength light signal transmitted by the seventh wave plate 51278b and the second wavelength light signal transmitted by the eighth wave plate 51729b, thereby improving the isolation. For example, the second preset value is 500 μm, and the center distance between any two adjacent wave plates of the fifth wave plate 51726b, the sixth wave plate 51727b, the seventh wave plate 51278b and the eighth wave plate 51729b is greater than 500 μm.

[0470] The second wave plate 51723b is located at the first end surface of the first substrate 51721, and the seventh wave plate 51728b and the eighth wave plate 51729b are located at the second end surface of the first substrate 51721, so that the emission direction of the received light signal transmitted by the second wave plate 51723b is opposite to the emission direction of the received light signal transmitted by the seventh wave plate 51728b or the eighth wave plate 51729b, thereby improving the isolation.

[0471] As shown in FIG. 51, the first reflecting plate 5173 can be located between the first light exit of the wave division assembly 5172b and the second light receiving assembly 520, so that the first reflecting plate 5173 can reflect the received light signal transmitted by the first light exit of the wave division assembly 5172b to the second light receiving assembly 520. For example, the first reflecting plate 5173 can be located between the second wave plate 51723b and the second light receiving assembly 520, and the first reflecting plate 5173 can reflect the first wavelength light signal to the second light receiving assembly 520.

[0472] The first reflecting plate 5176a can be located between the second light exit of the wave division assembly 5172b and the first light receiving assembly 530, so that the first reflecting plate 5176a can reflect the received light signal transmitted by the second light exit of the wave division assembly 5172b to the first light receiving assembly 530. For example, the first reflecting plate 5176a can be located between the seventh wave plate 51728b and the first light receiving assembly 530, and the first reflecting plate 5176a can reflect the third wavelength light signal to the first light receiving assembly 530.

[0473] The first reflecting member 5176a can include a first incident surface 51761a, a first reflecting surface 51762a, and a first exit surface 51763a. The first reflecting surface 51762a faces the first incident surface 51761a, such that the first reflecting surface 51762a can receive the third wavelength light signal incident on the first incident surface 51761a and reflect the third wavelength light signal. The first exit surface 51763a is located on the reflection path of the first reflecting surface 51762a, such that the third wavelength light signal can exit through the first exit surface 51763a. The first exit surface 51763a is located between the first reflecting surface 51762a and the first light receiving component 530, such that the first light receiving component 530 can receive the third wavelength light signal exiting through the first exit surface 51763a.

[0474] The second reflecting member 5174a can be located between the third light exit of the wave splitting component 5172b and the third light receiving component 540, such that the second reflecting member 5174a can reflect the received light signal transmitted at the third light exit of the wave splitting component 5172b to the third light receiving component 540. For example, the second reflecting member 5174a can be located between the eighth wave sheet 51729b and the third light receiving component 540, and the second reflecting member 5174a can reflect the second wavelength light signal to the third light receiving component 540.

[0475] The second reflecting member 5174a includes a second incident surface 51741a, a second reflecting surface 51742a, and a second exit surface 51743a. The second incident surface 51742a is located on the transmission path of the eighth wave sheet 51729b, such that the second incident surface 51742a can receive the second wavelength light signal transmitted by the eighth wave sheet 51729b. The second reflecting surface 51742a faces the second incident surface, such that the second reflecting surface 51742a can receive the second wavelength light signal incident on the second incident surface 51741a and reflect the second wavelength light signal. The second exit surface 51743a is located on the reflection path of the second reflecting surface 51742a, such that the second wavelength light signal can exit through the second exit surface 51743a. The second exit surface 51743a is located between the second reflecting surface 51742a and the third light receiving component 540, such that the third light receiving component 540 can receive the second wavelength light signal exiting through the second exit surface 51743a.

[0476] The distance between the second end surface of the first substrate 51721 and the third side wall 513 gradually increases from the second side wall 512a to the fourth side wall 514a, and the distance between the seventh wave sheet 51728b and the third side wall 513 is greater than the distance between the eighth wave sheet 51729b and the third side wall 513. In some embodiments, the center axis of the fourth connecting hole 5121a is closer to the third side wall 513 relative to the center axis of the third connecting hole 5141, which can reduce the light signal transmission path and reduce transmission loss.

[0477] The length dimension of the second side wall 512a is greater than the length dimension of the fourth side wall 514a due to the center axis of the fourth connecting hole 5121a being closer to the third side wall 513 than the center axis of the third connecting hole 5141.

[0478] As shown in FIG. 51, the light path is as follows:

[0479] The emitted light signal is transmitted through the fifth wave plate 51726b and the first wave plate 51722 in sequence, and then focused and coupled to the optical fiber adapter 700 through the first lens 5171.

[0480] The received light signal is first collimated through the first lens 5171, and then transmitted through the first wave plate 51722, and reflected to the second wave plate 51723b through the fifth wave plate 51726b. The first wavelength light signal in the received light signal is transmitted through the second wave plate 51723b, and then reflected to the second light receiving component 520 through the first reflecting piece 5173.

[0481] The third wavelength light signal in the received light signal is reflected through the second wave plate 51723b, the sixth wave plate 51727b, and the third wave plate 51724b in sequence, transmitted through the seventh wave plate 51728b, and then reflected to the first light receiving component 530 through the first reflecting piece 5176a.

[0482] The second wavelength light signal in the received light signal is reflected through the second wave plate 51723b, the sixth wave plate 51727b, the third wave plate 51724b, the seventh wave plate 51728b, and the fourth wave plate 51725b in sequence, transmitted through the eighth wave plate 51729b, and then reflected to the third light receiving component 540 through the second reflecting piece 5174a.

[0483] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present disclosure, and not to limit them; although the present disclosure has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand: they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. An optical module characterized by comprising: The application relates to an optical receiving component, which comprises: 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, wherein the light emitting direction of the optical transmitting component is towards the fiber adapter; wherein the optical receiving component comprises: a first shell, a first optical receiving assembly located on one side wall of the first shell, a second optical receiving assembly, and a third optical receiving assembly located on the other side wall of the first shell; the one side wall of the first shell is arranged opposite to the other side wall of the first shell; a first optical assembly comprises: a wave separation assembly, a first end of which is towards the fiber adapter, and a second end of which is towards the optical transmitting component; a first reflecting sheet; a first reflecting element; and a second reflecting element. The wave separation assembly comprises: a first substrate, a first wave plate, a second wave plate, the first reflecting sheet being located between the second wave plate and the second optical receiving assembly, a third wave plate, a fourth wave plate, the third wave plate, the second wave plate and the first wave plate being sequentially arranged on the first end surface of the first substrate, a fifth wave plate, which is towards the optical transmitting component and is located on the transmission light path of the first wave plate, the second wave plate being located on the reflection light path of the fifth wave plate, a sixth wave plate, which is located on the reflection light path of the second wave plate, the third wave plate being located on the reflection light path of the sixth wave plate, a seventh wave plate, which is located on the reflection light path of the third wave plate, the fourth wave plate being located on the reflection light path of the seventh wave plate, the first reflecting element being located between the seventh wave plate and the first optical receiving assembly, an eighth wave plate, which is sequentially arranged on the second end surface of the first substrate and comprises the seventh wave plate, the sixth wave plate and the fifth wave plate, the eighth wave plate being located on the reflection light path of the fourth wave plate, and the second reflecting element being located between the eighth wave plate and the third optical receiving assembly. The application relates to an optical receiving component, which comprises: 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, wherein the light emitting direction of the optical transmitting component is towards the fiber adapter; wherein the optical receiving component comprises: a first shell, a first optical receiving assembly located on one side wall of the first shell, a second optical receiving assembly, and a third optical receiving assembly located on the other side wall of the first shell; the one side wall of the first shell is arranged opposite to the other side wall of the first shell; a first optical assembly comprises: a wave separation assembly, a first end of which is towards the fiber adapter, and a second end of which is towards the optical transmitting component; a first reflecting sheet; a first reflecting element; and a second reflecting element. The wave separation assembly comprises: a first substrate, a first wave plate, a second wave plate, the first reflecting sheet being located between the second wave plate and the second optical receiving assembly, a third wave plate, a fourth wave plate, the third wave plate, the second wave plate and the first wave plate being sequentially arranged on the first end surface of the first substrate, a fifth wave plate, which is towards the optical transmitting component and is located on the transmission light path of the first wave plate, the second wave plate being located on the reflection light path of the fifth wave plate, a sixth wave plate, which is located on the reflection light path of the second wave plate, the third wave plate being located on the reflection light path of the sixth wave plate, a seventh wave plate, which is located on the reflection light path of the third wave plate, the fourth wave plate being located on the reflection light path of the seventh wave plate, the first reflecting element being located between the seventh wave plate and the first optical receiving assembly, an eighth wave plate, which is sequentially arranged on the second end surface of the first substrate and comprises the seventh wave plate, the sixth wave plate and the fifth wave plate, the eighth wave plate being located on the reflection light path of the fourth wave plate, and the second reflecting element being located between the eighth wave plate and the third optical receiving assembly.

2. An optical module characterized by comprising: ​ ​ ​ The light receiving component further comprises a wave separation component, a first end of the wave separation component is arranged corresponding to the first end of the light receiving component, and a second end of the wave separation component is arranged corresponding to the second end of the light receiving component; the emitted light signal of the light emitting component is incident to the emission light entrance of the second end of the wave separation component and is emitted through the receiving light entrance of the first end of the wave separation component; the received light signal including the first wavelength, the second wavelength and the third wavelength emitted by the fiber adapter is incident to the receiving light entrance of the first end of the wave separation component, is reflected through the emission light entrance of the second end of the wave separation component, and is then emitted after being separated 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 components, wherein the first wavelength light signal includes the received light signal of the first wavelength, the second wavelength light signal includes the received light signal of the second wavelength, and the third wavelength light signal includes the received light signal of the third wavelength.

3. An optical module characterized by comprising: Comprise: The light receiving component comprises a first housing, a first light receiving component, a second light receiving component and a third light receiving component, the first housing comprises 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 is connected with the fiber adapter, the second side wall is connected with the first light receiving component and the second light receiving component respectively, the third side wall is connected with the light emitting component, and the fourth side wall is connected with the third light receiving component, and the light emitting direction of the light emitting component is towards the fiber adapter; The light receiving component further comprises a first cover plate, the first cover plate covers the first housing to form a first cavity; the wave separation component is arranged in the first cavity and is arranged along the length of the second side wall, so that the wave separation component is arranged along the length direction of the first housing; the emitted light signal of the light emitting component is incident to the emission light entrance of the second end of the wave separation component and is emitted through the receiving light entrance of the first end of the wave separation component; the received light signal including the first wavelength, the second wavelength and the third wavelength emitted by the fiber adapter is incident to the receiving light entrance of the first end of the wave separation component, is reflected through the emission light entrance of the second end of the wave separation component, and is then emitted after being separated 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 components, wherein the first wavelength light signal includes the received light signal of the first wavelength, the second wavelength light signal includes the received light signal of the second wavelength, and the third wavelength light signal includes the received light signal of the third wavelength.

4. An optical module characterized by comprising: Comprise: The light receiving component comprises a first shell, the first shell comprises a first side wall, a second side wall, a third side wall and a fourth side wall connected in sequence, the first side wall is connected with a fiber adapter, the second side wall is connected with a first light receiving assembly and a second light receiving assembly respectively, the third side wall is connected with a light emitting component, and the fourth side wall is connected with a third light receiving assembly; the light emitting direction of the light emitting component is towards the fiber adapter; The first shell has a first bearing surface, a second bearing surface, a third bearing surface and a fourth bearing surface, the first bearing surface is towards the third light receiving assembly, the second bearing surface is towards the second light receiving assembly, the third bearing surface is towards the first light receiving assembly, and the fourth bearing surface is towards the second side wall; The light receiving component further comprises a wave splitting assembly, the wave splitting assembly is supported on the fourth bearing surface, so that the wave splitting assembly is arranged along the length direction of the first shell; the emitted light signal of the light emitting component is incident on the fiber adapter through the wave splitting assembly, and the received light signal emitted by the fiber adapter is emitted after being split by the wave splitting assembly; A first reflecting sheet is supported on the second bearing surface, so that the received light signal emitted by the wave splitting assembly is reflected to the second light receiving assembly; a second reflecting sheet is supported on the third bearing surface, so that the received light signal emitted by the wave splitting assembly is reflected to the first light receiving assembly; and a third reflecting sheet is supported on the first bearing surface, so that the received light signal emitted by the wave splitting assembly is reflected to the third light receiving assembly.

5. An optical module characterized by comprising: Comprise: The light receiving component comprises a first shell, the first shell comprises a first side wall, a second side wall, a third side wall and a fourth side wall connected in sequence, the first side wall has a first connecting hole, the third side wall has a second connecting hole, the fourth side wall has a third connecting hole, the second side wall has a fourth connecting hole and a fifth connecting hole, the first connecting hole is connected with a fiber adapter, the second connecting hole is connected with a light emitting component, the third connecting hole is connected with a third light receiving assembly, the fourth connecting hole is connected with a second light receiving assembly, and the fifth connecting hole is connected with a first light receiving assembly; the light emitting direction of the light emitting component is towards the fiber adapter; The first shell has a first bearing surface, a second bearing surface, a third bearing surface and a fourth bearing surface, the first bearing surface is towards the third connecting hole, the second bearing surface is towards the fourth connecting hole, the third bearing surface is towards the fifth connecting hole, and the fourth bearing surface is towards the second side wall; The light receiving component further comprises a first cover plate, the first cover plate covers the first shell to form a first cavity; the first cavity is provided with a wave splitting assembly, a first reflecting sheet, a second reflecting sheet and a third reflecting sheet, the wave splitting assembly is supported on the fourth bearing surface, so that the wave splitting assembly is arranged along the length direction of the first shell; the emitted light signal of the light emitting component is incident on the fiber adapter through the wave splitting assembly, and the received light signal emitted by the fiber adapter is emitted after being split by the wave splitting assembly; The first reflecting sheet is supported on the second supporting surface, so that the received optical signal emitted by the demultiplexing component is reflected to the second optical receiving component; the second reflecting sheet is supported on the third supporting surface, so that the received optical signal emitted by the demultiplexing component is reflected to the first optical receiving component; and the third reflecting sheet is supported on the first supporting surface, so that the received optical signal emitted by the demultiplexing component is reflected to the third optical receiving component.

Images