Optical module

Abstract

The invention provides an optical module, a light receiving component comprises a plurality of light receiving assemblies, a first light receiving assembly and a second light receiving assembly are located on one side of the light receiving component, and a third light receiving assembly is located on the other side of the light receiving component. The emission optical signal is transmitted by the first optical filter, and the receiving optical signal is reflected by the first optical filter, the first reflector plate and the second reflector plate in sequence and then enters the wave division assembly. And the wave division assembly is arranged along the length direction of the light receiving component. The first end of the wave division assembly is provided with a first light emitting position, the second end of the wave division assembly is provided with a second light emitting position and a third light emitting position, and the three beams of receiving light signals are transmitted through the first light emitting position, the second light emitting position and the third light emitting position respectively. In the invention, the first light receiving assembly and the second light receiving assembly are located at one side of the light receiving component, the third light receiving assembly is located at the other side of the light receiving component, and the wave division assembly is arranged along the length direction of the light receiving component so as to reduce the size of the light receiving component.

Description

Technical Field

[0001] This disclosure relates to the field of optical fiber communication technology, and in particular to an optical module. Background Technology

[0002] With the development of new business and application models such as cloud computing, mobile internet, and video, the advancement of optical communication technology has become increasingly important. In optical communication technology, optical modules are the tools for converting between photoelectric signals and signals, and are one of the key components in optical communication equipment. Furthermore, with the evolving needs of optical communication technology, the transmission rate of optical modules is constantly increasing. Summary of the Invention

[0003] This disclosure provides an optical module that reduces the length of the optical receiving component.

[0004] In a first aspect, this disclosure provides an optical module, including:

[0005] An optical receiving component, with its first end connected to an optical fiber adapter and its second end connected to an optical transmitting component, includes:

[0006] First shell;

[0007] First optical receiving component;

[0008] The second optical receiving component is located on one side wall of the first housing, along with the first optical receiving component;

[0009] The third optical receiving component is located on the other side wall of the first housing;

[0010] Optical components, including:

[0011] The first filter is located between the light emitting component and the optical fiber adapter to enable the transmission of the emitted optical signal and the reflection of the received optical signal.

[0012] The first reflective sheet is located on the reflected light path of the first filter;

[0013] The second reflector is located on the reflected light path of the first reflector;

[0014] A wavelength division multiplexing (WDM) component has a first end corresponding to the first end of the first housing and a second end corresponding to the second end of the first housing. The first end of the WDM component includes an incident light point and a first exit light point. The incident light point is located on the reflected light path of the second reflector. The incident light point and the first exit light point are adjacent to each other. The second end of the WDM component includes a second exit light point and a third exit light point. The received optical signal is incident on the WDM component through the incident light point and then split into beams. The first wavelength optical signal is transmitted through the first exit light point, the second wavelength optical signal is transmitted through the second exit light point, and the third wavelength optical signal is transmitted through the third exit light point.

[0015] The third reflector is located on the outgoing light path of the first light-emitting point; the first light-receiving component is located on the reflected light path of the third reflector; the first filter and the first reflector are both located in opposite directions on the reflected light path of the third reflector.

[0016] A beam splitter includes a first reflecting surface and a second reflecting surface. The first reflecting surface is located on the outgoing light path at the second light-emitting point, and the second light-receiving component is located on the reflected light path of the first reflecting surface. The second reflecting surface is located on the outgoing light path at the third light-emitting point, and the third light-receiving component is located on the reflected light path of the second reflecting surface.

[0017] Secondly, this disclosure provides an optical module, comprising:

[0018] A light-emitting component used to emit light signals;

[0019] The optical receiving component includes:

[0020] The first housing includes a first sidewall, a second sidewall, a third sidewall, and a fourth sidewall. The first sidewall is connected to the fiber optic adapter, and the third sidewall is connected to the light emitting component.

[0021] The first optical receiving component is embedded in the second sidewall;

[0022] The second optical receiving component is embedded in the second sidewall;

[0023] The third optical receiving component is embedded in the fourth side wall;

[0024] The optical component, located within the first housing, includes:

[0025] A first filter is located between the light emitting component and the optical fiber adapter, and is used to transmit the emitted light signal and reflect the received light signal emitted by the optical fiber adapter.

[0026] The first reflective sheet and the first filter are both disposed on the fourth sidewall and are used to reflect the received light signal reflected by the first filter;

[0027] The second reflector is used to reflect the received optical signal reflected by the first reflector;

[0028] A wavelength division multiplexing (WDM) component is used to receive the received optical signal reflected by the second reflector. The first end of the WDM component is correspondingly disposed with the first end of the first housing, and the second end of the WDM component is correspondingly disposed with the second end of the first housing. The first end of the WDM component includes an incident light point and a first exit light point, which are adjacent to each other. The second end of the WDM component includes a reflection point, a second exit light point, and a third exit light point, with the second exit light point located between the reflection point and the third exit light point. After the received optical signal passes through the incident light point and the reflection point, a first wavelength optical signal is transmitted through the first exit light point, a second wavelength optical signal is transmitted through the second exit light point, and a third wavelength optical signal is transmitted through the third exit light point.

[0029] The third reflector is used to reflect the first wavelength optical signal to the first optical receiving component;

[0030] The beam splitter includes a first reflecting surface and a second reflecting surface. The first reflecting surface is used to reflect the second wavelength optical signal to the second optical receiving component, and the second reflecting surface is used to reflect the third wavelength optical signal to the third optical receiving component.

[0031] Beneficial Effects: This disclosure provides an optical module, in which an optical receiving component includes a first optical receiving assembly, a second optical receiving assembly, and a third optical receiving assembly. The first and second optical receiving assemblies are located on one side of the optical receiving component, and the third optical receiving assembly is located on the other side, thereby reducing the length of the optical receiving component. The optical receiving component includes a first filter, a first reflector, a second reflector, a wavelength division multiplexing assembly, a third reflector, and a beam splitter. The first filter transmits emitted optical signals and reflects received optical signals. The first reflector reflects the received optical signals reflected by the first filter, and the second reflector reflects the received optical signals reflected by the first reflector. The first end of the wavelength division multiplexing assembly corresponds to the first end of the optical receiving component, and the second end of the wavelength division multiplexing assembly corresponds to the second end of the optical receiving component, so that the wavelength division multiplexing assembly is arranged along the length direction of the optical receiving component, thereby reducing the width of the optical receiving component. The first end of the wavelength division multiplexing assembly has an incident light point and a first exit light point, the incident light point being used to receive the received optical signals reflected by the second reflector. The light input point and the first light output point are arranged adjacent to each other. The second end of the wavelength division component has a second light output point and a third light output point. The received optical signal is incident on the wavelength division component through the light input point and then split into beams. The first wavelength optical signal is transmitted through the first light output point, the second wavelength optical signal is transmitted through the second light output point, and the third wavelength optical signal is transmitted through the third light output point. The third reflector reflects the first wavelength optical signal to the first optical receiving component, the first reflective surface of the beam splitter reflects the second wavelength optical signal to the second optical receiving component, and the second reflective surface of the beam splitter reflects the third wavelength optical signal to the third optical receiving component. The first optical receiving component is located in the reflected light path of the third reflector. The first filter and the first reflector are located in opposite directions in the reflected light path of the third reflector to reduce the size of the optical receiving component. In this disclosure, the first and second optical receiving components are located on one side of the optical receiving component, and the third optical receiving component is located on the other side of the optical receiving component to reduce the length of the optical receiving component; the wavelength division component is arranged along the length of the optical receiving component to reduce the width of the optical receiving component. Attached Figure Description

[0032] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a partial structural diagram of an optical communication system according to some embodiments;

[0034] Figure 2 This is a partial structural diagram of a host computer according to some embodiments;

[0035] Figure 3 This is a structural diagram of an optical module according to some embodiments;

[0036] Figure 4 An exploded view of an optical module according to some embodiments;

[0037] Figure 5 This is an assembly diagram of an optical transceiver and an optical fiber adapter according to some embodiments;

[0038] Figure 6 An exploded view of an optical transceiver and fiber optic adapter according to some embodiments;

[0039] Figure 7 This is a structural diagram of a first cavity provided according to some embodiments;

[0040] Figure 8 This is an exploded view of a first cavity provided according to some embodiments;

[0041] Figure 9 An exploded view of a first housing and a first optical component according to some embodiments;

[0042] Figure 10 This is a cross-sectional view of a first housing provided according to some embodiments;

[0043] Figure 11 This is an optical path diagram of a first optical component according to some embodiments;

[0044] Figure 12 This is an optical path diagram of another first optical component provided according to some embodiments;

[0045] Figure 13 This is a structural diagram of a wavelength division multiplexing (WDM) assembly according to some embodiments;

[0046] Figure 14 This is a cross-sectional view of an optical transceiver component provided according to some embodiments;

[0047] Figure 15 This is an assembly diagram of an optical transceiver and fiber optic adapter provided according to some embodiments, viewed from another perspective.

[0048] Figure 16 This is a structural diagram of a light emitting component according to some embodiments;

[0049] Figure 17 This is an exploded view of a second housing and electrical connection according to some embodiments;

[0050] Figure 18 This is an optical path diagram of a second optical component according to some embodiments;

[0051] Figure 19 This is an optical path diagram of another second optical component provided according to some embodiments. Detailed Implementation

[0052] The embodiments of this disclosure will now be described clearly and in detail with reference to the accompanying drawings. However, the described embodiments are merely some, and not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the embodiments provided in this disclosure are within the scope of protection of this disclosure.

[0053] Unless the context otherwise requires, throughout the specification and claims, the term "comprising" is interpreted as open and inclusive, meaning "including, but not limited to"; the terms "first" and "second" should not be construed as indicating or implying relative importance or indicating an upper limit on the number; the term "multiple" means two or more; the term "connection" should be interpreted broadly, for example, "connection" can be a fixed connection, a detachable connection, or an integral part, and can be a direct connection or an indirect connection through an intermediate medium; the use of the terms "applicable to" or "configured to" implies open and inclusive language, which does not exclude applicability to or configuration to devices performing additional tasks or steps; descriptions such as "parallel," "perpendicular," "identical," "consistent," and "aligned" are not limited to absolute mathematical theoretical relationships, but also include acceptable error ranges arising in practice, and differences based on the same design concept but due to manufacturing reasons.

[0054] In optical communication technology, to establish information transmission between information processing devices, information needs to be loaded onto light, and the propagation of light is used to transmit the information. Here, the light carrying the information is called an optical signal. When optical signals are transmitted in information transmission equipment, optical power loss can be reduced, thus enabling high-speed, long-distance, and low-cost information transmission. Information processing devices can recognize and process electrical signals. Information processing devices typically include optical network units (ONUs), gateways, routers, switches, mobile phones, computers, servers, tablets, televisions, etc., while information transmission equipment typically includes optical fibers and optical waveguides.

[0055] An optical module enables the conversion between optical and electrical signals between information processing and transmission devices. For example, at least one of the optical signal input or output ports of the optical module is connected to an optical fiber, and at least one of the electrical signal input or output ports is connected to an optical network terminal. A first optical signal from the optical fiber is transmitted to the optical module, which converts it into a first electrical signal and transmits it to the optical network terminal. A second electrical signal from the optical network terminal is transmitted to the optical module, which converts it into a second optical signal and transmits it back to the optical fiber. Since multiple information processing devices can transmit information via electrical signals, at least one of the devices needs to be directly connected to the optical module, rather than all devices. Here, the information processing device directly connected to the optical module is referred to as the host computer of the optical module. Furthermore, the optical signal input or output port of the optical module can be referred to as an optical port, and the electrical signal input or output port can be referred to as an electrical port.

[0056] Figure 1 This is a partial structural diagram of an optical communication system according to some embodiments. Figure 1 As shown, 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.

[0057] One end of optical fiber 101 extends toward the remote information processing device 1000, and the other end of optical fiber 101 is connected to optical module 200 through the optical port of optical module 200. The optical signal can undergo total internal reflection in optical fiber 101, and the propagation of the optical signal in the direction of total internal reflection can almost maintain the original optical power. The optical signal undergoes multiple total internal reflections in optical fiber 101 to transmit the optical signal from the remote information processing device 1000 to optical module 200, or to transmit the optical signal from optical module 200 to remote information processing device 1000, thereby realizing long-distance, low-power loss information transmission.

[0058] The optical communication system may include one or more optical fibers 101, and the optical fibers 101 may be detachably or fixedly connected to the optical module 200. The host computer 100 is configured to provide data signals to the optical module 200, receive data signals from the optical module 200, or monitor or control the operating status of the optical module 200.

[0059] The host computer 100 includes a generally rectangular housing and an optical module connection hole 102 disposed on the housing. The optical module connection hole 102 is configured to connect to an optical module 200, so that the host computer 100 and the optical module 200 can establish a one-way or two-way electrical signal connection.

[0060] The host computer 100 also includes an external power connection port, which can be connected to an electrical signal network. For example, this external power connection port includes a Universal Serial Bus (USB) connection port or a network cable connection port 104, configured to connect a network cable 103, so that the host computer 100 and the network cable 103 can establish a unidirectional or bidirectional electrical signal connection. 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, so as 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 via the network cable 103. The host computer 100 generates a second electrical signal based on the third electrical signal. This second electrical signal from the host computer 100 is transmitted to the optical module 200, which converts the second electrical signal into a second optical signal and transmits it to the optical fiber 101. The second optical signal is then transmitted in the optical fiber 101 to the remote information processing device 1000. Alternatively, a first optical signal from the remote information processing device 1000 propagates through the optical fiber 101 and is transmitted to the optical module 200. The optical module 200 converts the first optical signal into a first electrical signal and transmits it to the host computer 100. The host computer 100 generates a fourth electrical signal based on the first electrical signal and transmits the fourth electrical signal to the local information processing device 2000. It should be noted that an optical module is a tool for converting optical signals to electrical signals. During the conversion process, the information itself does not change, but the encoding and decoding methods can change.

[0061] In addition to optical network terminals, the host computer 100 also includes optical line terminals (OLTs), optical network equipment (ONTs), or data center servers.

[0062] Figure 2 This is a partial structural diagram of a host computer according to some embodiments. To clearly show the connection relationship between the optical module 200 and the host computer 100, Figure 2 Only the structure of the host computer 100 related to the optical module 200 is shown. For example... Figure 2 As shown, the host computer 100 also includes a PCB circuit board 105 disposed within the housing, a cage 106 disposed on the surface of the PCB circuit board 105, a heat sink 107 disposed on the cage 106, and an electrical connector disposed inside the cage 106. The electrical connector is configured to connect to the electrical port of the optical module 200; the heat sink 107 has fins and other protruding structures to increase the heat dissipation area.

[0063] The optical module 200 is inserted into the cage 106 of the host computer 100, where it is secured. Heat generated by the optical module 200 is conducted to the cage 106 and then dissipated through the heat sink 107. After insertion into the cage 106, the optical module 200's electrical port connects to the electrical connector inside the cage 106, establishing a bidirectional electrical signal connection between the optical module 200 and the host computer 100. Furthermore, the optical port of the optical module 200 connects to the optical fiber 101, establishing a bidirectional optical signal connection between the optical module 200 and the optical fiber 101.

[0064] Figure 3 This is a structural diagram of an optical module according to some embodiments. Figure 4 This is an exploded view of an optical module according to some embodiments. Figure 3 and Figure 4 As shown, the optical module 200 includes a shell, a circuit board 300 disposed within the shell, a light emitting component 400, and a light receiving component 500. However, this disclosure is not limited thereto; in some embodiments, the optical module 200 includes one of the light emitting component 400 and the light receiving component 500.

[0065] The housing includes an upper housing 201 and a lower housing 202, with the upper housing 201 covering the lower housing 202 to form the aforementioned housing having two openings 204 and 205; the outer contour of the housing is generally square.

[0066] In some embodiments, the lower housing 202 includes a base plate 2021 and two lower side plates 2022 located on both sides of the base plate 2021 and perpendicular to the base plate 2021; the upper housing 201 includes a cover plate 2011, which covers the two lower side plates 2022 of the lower housing 202 to form the aforementioned housing.

[0067] In some embodiments, the lower housing 202 includes a base plate 2021 and two lower side plates 2022 located on both sides of the base plate 2021 and perpendicular to the base plate 2021; the upper housing 201 includes a cover plate 2011 and two upper side plates located on both sides of the cover plate 2011 and perpendicular to the cover plate 2011. The two upper side plates and the two lower side plates 2022 are combined to realize that the upper housing 201 covers the lower housing 202.

[0068] The direction of the line connecting the two openings 204 and 205 can be consistent with or inconsistent with the length direction of the optical module 200. For example, opening 204 is located at the end of the optical module 200. Figure 3 The opening 205 is also located at the end of the optical module 200 (left end). Figure 3(The right end). Alternatively, opening 204 is located at the end of the optical module 200, while opening 205 is located on the side of the optical module 200. Opening 204 is an electrical port, from which the gold fingers of the circuit board 300 extend and are inserted into the electrical connector of the host computer 100; opening 205 is an optical port, configured to connect to an external optical fiber 101, so that the optical fiber 101 connects the optical emitting component 400 and the optical receiving component 500 in the optical module 200.

[0069] The assembly method using an upper housing 201 and a lower housing 202 facilitates the installation of the circuit board 300, the light emitting component 400, and the light receiving component 500 into the aforementioned housings. The upper housing 201 and the lower housing 202 can encapsulate and protect these devices. Furthermore, the assembly of the circuit board 300, the light emitting component 400, and the light receiving component 500 facilitates the deployment of positioning components, heat dissipation components, and electromagnetic shielding components for these devices, which is beneficial for automated production.

[0070] In some embodiments, the upper housing 201 and the lower housing 202 are made of metal materials, which facilitates electromagnetic shielding and heat dissipation.

[0071] In some embodiments, the optical module 200 further includes an unlocking component 600 located outside its housing. The unlocking component 600 is configured to establish a 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.

[0072] For example, the unlocking component 600 is located on the outside of the two lower side plates 2022 of the lower housing 202, and includes a locking component that matches the cage 106 of the host computer 100. When the optical module 200 is inserted into the cage 106, the locking component of the unlocking component 600 fixes the optical module 200 in the cage 106; when the unlocking component 600 is pulled, the locking component of the unlocking component 600 moves accordingly, thereby changing the connection relationship between the locking component and the host computer, so as to release the fixation between the optical module 200 and the host computer, thereby allowing the optical module 200 to be pulled out of the cage 106.

[0073] Circuit board 300 includes circuit traces, electronic components, and chips. The circuit traces connect the electronic components and chips according to the circuit design to achieve functions such as power supply, electrical signal transmission, and grounding. Electronic components may include, for example, capacitors, resistors, transistors, and metal-oxide-semiconductor field-effect transistors (MOSFETs). Chips may include, for example, microcontroller units (MCUs), laser driver chips, transimpedance amplifiers (TIAs), limiting amplifiers (LIAs), clock and data recovery chips (CDRs), power management chips, and digital signal processing (DSP) chips.

[0074] Circuit board 300 is generally a rigid circuit board. Due to its relatively hard material, the rigid circuit board can also perform a load-bearing function. For example, the rigid circuit board can stably support the aforementioned 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.

[0075] The circuit board 300 also includes gold fingers formed on its end surfaces, each gold finger consisting of a plurality of independent pins. The circuit board 300 is inserted into a cage 106 and is electrically connected to an electrical connector within the cage 106 by the gold fingers. The gold fingers may be located only on one side of the surface of the circuit board 300 (e.g., ...). Figure 4 The upper surface shown can also be positioned on the upper and lower surfaces of the circuit board 300 to provide a greater number of pins, thus adapting to applications with high pin count requirements. The gold fingers are configured to establish an electrical connection with the host computer to achieve power supply, grounding, two-wire synchronous serial (Inter-Integrated Circuit, I2C) signal transmission, and data signal transmission. Of course, flexible circuit boards are also used in some optical modules. Flexible circuit boards are generally used in conjunction with rigid circuit boards as a supplement to rigid circuit boards.

[0076] At least one of the light emitting component 400 or the light receiving component 500 is located on the side of the circuit board 300 away from the gold fingers.

[0077] In some embodiments, the light emitting component 400 and the light receiving component 500 are physically separated from the circuit board 300, and then electrically connected to the circuit board 300 through corresponding flexible circuit boards or electrical connectors.

[0078] In some embodiments, at least one of the light emitting component 400 or the light receiving component 500 may be directly disposed on the circuit board 300. For example, at least one of the light emitting component 400 or the light receiving component 500 may be disposed on the surface of the circuit board 300 or the side of the circuit board 300.

[0079] An optical transceiver unit consists of an optical emitting component and an optical receiving component, and is electrically connected to a circuit board 300. The optical emitting component is the transmitting end of the optical transceiver unit, and the optical receiving component is the receiving end of the optical transceiver unit. Both the transmitting end and the receiving end of the optical transceiver unit are electrically connected to the circuit board 300.

[0080] In some embodiments, the light emitting component 400 can generate light signals of multiple wavelengths. These multiple wavelengths of light signals can be combined into a single emitted light signal, so that the number of emitted light signals emitted by the light emitting component 400 is one. For example, the light emitting component 400 can generate light signals of three wavelengths with different rates, such as a fourth wavelength light signal, a fifth wavelength light signal, and a sixth wavelength light signal with different rates.

[0081] In some embodiments, the wavelength range of the fourth wavelength optical signal is 1340-1344nm, such as 1342nm; the wavelength range of the fifth wavelength optical signal is 1480-1500nm, such as 1490nm; and the wavelength range of the sixth wavelength optical signal is 1575-1580nm, such as 1577nm.

[0082] In some embodiments, the optical receiving component 500 can receive optical signals including multiple wavelengths. For example, the optical receiving component 500 receives three wavelengths of optical signals with different rates, such as a first wavelength optical signal, a second wavelength optical signal, and a third wavelength optical signal with different rates. The first wavelength optical signal includes the received optical signal of a first wavelength, the second wavelength optical signal includes the received optical signal of a second wavelength, and the third wavelength optical signal includes the received optical signal of a third wavelength.

[0083] In some embodiments, the wavelength range of the first wavelength optical signal can be 1284-1288nm, or 1290-1330nm, or 1260-1280nm. For example, the wavelength range of the first wavelength optical signal is 1284-1288nm, such as when the wavelength of the first wavelength optical signal is 1286nm.

[0084] In some embodiments, the wavelength range of the second wavelength optical signal can be 1284-1288 nm, or 1290-1330 nm, or 1260-1280 nm. For example, the wavelength range of the second wavelength optical signal is 1290-1330 nm, such as when the wavelength of the second wavelength optical signal is 1310 nm.

[0085] In some embodiments, the wavelength range of the third wavelength optical signal can be 1284-1288 nm, or 1290-1330 nm, or 1260-1280 nm. For example, the wavelength range of the third wavelength optical signal is 1260-1280 nm, such as when the wavelength of the third wavelength optical signal is 1270 nm.

[0086] like Figure 4 As shown, in some embodiments, an optical fiber adapter 700 may be disposed within the housing of the optical module 200. One end of the optical fiber adapter 700 may be connected to a first end of the optical receiving component 500, so that an externally input received optical signal is input to the optical receiving component 500 through the optical fiber adapter 700. In some embodiments, a second end and a first end of the optical receiving component 500 may be disposed at opposite ends of the optical receiving component 500 along its length.

[0087] The second end of the optical receiver 500 can be connected to the optical transmitter 400, and the first end of the optical receiver 500 can be connected to one end of the fiber optic adapter 700. The light output direction of the optical transmitter 400 faces the fiber optic adapter 700, so that the transmitted optical signal emitted by the optical transmitter 400 is first transmitted to the optical receiver 500, then transmitted through the optical receiver 500 to the fiber optic adapter 700, and finally output through the fiber optic adapter 700. The optical receiver 500 and the optical transmitter 400 share the fiber optic adapter 700, and thus the uplink and downlink optical signals of the optical module share the same optical fiber 101.

[0088] In some embodiments, the number of emitted light signals (i.e., emitted beams) emitted by the light emitting component 400 in the optical signal incident on the light receiving component 500 is less than the number of externally input received light signals (i.e., received beams). For example, the number of emitted light signals (i.e., emitted beams) emitted by the light emitting component 400 in the optical signal incident on the light receiving component 500 is at least two beams more than the number of externally input received light signals (i.e., received beams) to reduce the difficulty of beam splitting the optical signal within the light receiving component 500.

[0089] Figure 5 This is an assembly diagram of an optical transceiver and fiber optic adapter according to some embodiments. Figure 6 This is an exploded view of an optical transceiver and fiber optic adapter according to some embodiments. Figure 7This is a structural diagram of a first cavity according to some embodiments. Figure 5 , Figure 6 and Figure 7 As shown, in some embodiments, the optical receiving component 500 may include a first cavity. One end of the first cavity may be connected to the optical transmitting component 400. The other end of the first cavity may be connected to the fiber optic adapter 700, so that the first cavity can receive the received optical signal emitted by the fiber optic adapter 700. One end of the first cavity may be connected to the optical transmitting component 400, and the other end of the first cavity may be connected to one end of the fiber optic adapter 700, so that the transmitted optical signal emitted by the optical transmitting component 400 is first transmitted to the first cavity, then transmitted through the first cavity to the fiber optic adapter 700, and finally output through the fiber optic adapter 700.

[0090] like Figure 5 , Figure 6 and Figure 7 As shown, in some embodiments, the optical receiving component 500 may include at least one receiving component. The at least one optical receiving component may be connected to the first cavity so that externally input received optical signals (including optical signals of multiple wavelengths) are input to the first cavity via the fiber optic adapter 700, and then transmitted through the first cavity to the at least one optical receiving component.

[0091] In some embodiments, at least one optical receiving component may include a first optical receiving component 520. The first optical receiving component 520 may receive a first wavelength optical signal, the wavelength of which is in the range of 1284-1288 nm.

[0092] In some embodiments, at least one optical receiving component may include a second optical receiving component 530. The second optical receiving component 530 may receive a second wavelength optical signal, the wavelength of which is in the range of 1260-1280 nm.

[0093] In some embodiments, at least one optical receiving component may include a third optical receiving component 540. The third optical receiving component 540 may receive a third wavelength optical signal, the wavelength of which is in the range of 1290-1330 nm.

[0094] At least one optical receiving component includes a first optical receiving component 520, a second optical receiving component 530, and a third optical receiving component 540, so that the optical receiving component 500 can receive optical signals of three wavelengths with different rates.

[0095] In some embodiments, the first optical receiving component 520, the second optical receiving component 530, and the third optical receiving component 540 each include a receiving cap and a receiving socket. The receiving cap is disposed on the receiving socket to form a receiving cavity. An optical receiving chip is disposed in the receiving cavity, and the optical receiving chip receives optical signals and converts the optical signals into electrical signals.

[0096] The receiver socket is also equipped with receiver pins. One end of the receiver pin is connected to the circuit board 300 via a flexible circuit board to achieve electrical connection between the receiver pin and the circuit board 300. The receiver pin extends upward from the bottom of the receiver socket until it extends beyond the top of the receiver socket, and is wire-connected to the pad where the optical receiver chip is located to achieve electrical connection between the receiver pin and the optical receiver chip, thereby transmitting the electrical signal to the circuit board 300 through the receiver pin.

[0097] In some embodiments, the receiving cap of the optical receiving assembly 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 optical receiving chip inside the receiving cavity.

[0098] In some embodiments, the receiving rates of the optical receiving chips of the first optical receiving component 520, the second optical receiving component 530, and the third optical receiving component 540 may all be different. For example, the receiving rate of the optical receiving chip of the first optical receiving component 520 may be greater than that of the optical receiving chip of the second optical receiving component 530, and also greater than that of the optical receiving chip of the third optical receiving component 540. For instance, the receiving rate of the optical receiving chip of the first optical receiving component 520 may be 25G, the receiving rate of the optical receiving chip of the second optical receiving component 530 may be 10G, and the receiving rate of the optical receiving chip of the third optical receiving component 540 may be 2.5G.

[0099] In some embodiments, the first optical receiving component 520, the second optical receiving component 530, and the third optical receiving component 540 are all located on the same sidewall of the first cavity.

[0100] In some embodiments, the first light receiving component 520 and the second light receiving component 530 may be located on one side wall of the first cavity, and the third light receiving component 540 may be located on the other side wall of the first cavity, so as to reduce the length of the light receiving component 500.

[0101] In some embodiments, the first cavity may include a first connection hole 5111. The first connection hole 5111 may be located at a first end of the first cavity. The first connection hole 5111 may be connected to an optical fiber adapter 700 to connect the optical fiber adapter 700 to the first cavity. For example, one end of a connecting sleeve 710 is inserted into the first connection hole 5111, and the other end of the connecting sleeve 710 is connected to the optical fiber adapter 700 to connect the optical fiber adapter 700 to the first cavity via the connecting sleeve 710.

[0102] In some embodiments, the first cavity may include a second connection hole 5131. The second connection hole 5131 may be located at a second end of the first cavity. The second connection hole 5131 may be connected to the light emitting component 400 so that the light emitting component 400 is connected to the first cavity.

[0103] In some embodiments, the first connecting hole 5111 and the second connecting hole 5131 may be arranged opposite to each other.

[0104] In some embodiments, the first cavity may include a third connection hole 5122. The third connection hole 5122 may be used for the insertion of the first optical receiving component 520 to connect the first optical receiving component 520 to the first cavity.

[0105] In some embodiments, the first cavity may include a fourth connection hole 5121. The fourth connection hole 5121 may be used for the insertion of a second optical receiving component 530 to connect the second optical receiving component 530 to the first cavity.

[0106] In some embodiments, the first cavity may include a fifth connection hole 5141. The fifth connection hole 5141 may be used for the insertion of a third optical receiving component 540 to connect the third optical receiving component 540 to the first cavity.

[0107] In some embodiments, the third connection hole 5122 and the fourth connection hole 5121 may be located on one side wall of the first cavity, and the fifth connection hole 5141 may be located on the other side wall of the first cavity, so that the first light receiving component 520 and the second light receiving component 530 are located on one side wall of the first cavity, and the third light receiving component 540 is located on the other side wall of the first cavity, thereby reducing the length dimension of the first cavity.

[0108] Figure 8 This is an exploded view of a first cavity provided according to some embodiments. Figure 9 This is an exploded view of a first housing and a first optical component according to some embodiments. Figure 8 and Figure 9 As shown, in some embodiments, the first cavity may include a first housing 510.

[0109] In some embodiments, the first cavity may include a first cover plate 515. The first cover plate 515 may cover the first housing 510 to form the first cavity. A first optical component 517 may be disposed in the first cavity. The first optical component 517 may transmit the emitted optical signal to the fiber optic adapter 700, or it may split the received optical signal transmitted from the fiber optic adapter 700 to the first cavity and then incident the split optical signal onto the corresponding optical receiving component.

[0110] During the assembly process, the first optical component 517 is first fixed inside the first housing 510, and then the first cover plate 515 is placed on the first housing 510 to assemble the first optical component 517 into the first cavity.

[0111] Figure 10 This is a cross-sectional view of a first housing provided according to some embodiments. Figure 8 , Figure 9 and Figure 10 As shown, in some embodiments, the first housing 510 is recessed inward to form a receiving cavity 516, i.e., the inner cavity of the first cavity, so that the receiving cavity 516 can communicate with the first connecting hole 5111, the second connecting hole 5131, the third connecting hole 5122, the fourth connecting hole 5121, and the fifth connecting hole 5141. The receiving cavity 516 can accommodate other devices in the first optical assembly 517 except for the first lens 5171.

[0112] In some embodiments, the first housing 510 may include a first sidewall 511. The first sidewall 511 may have a first connection hole 5111. The first connection hole 5111 may extend through the first sidewall 511 so that the first connection hole 5111 can communicate with the inner cavity of the first cavity, thereby allowing optical signals to be transmitted along the first connection hole 5111 inside and outside the first cavity.

[0113] In some embodiments, the first housing 510 may include a second sidewall 512. One end of the second sidewall 512 may be connected to one end of the first sidewall 511.

[0114] In some embodiments, the second sidewall 512 may have a third connection hole 5122. The third connection hole 5122 may extend through the second sidewall 512 so that the third connection hole 5122 can communicate with the inner cavity of the first cavity, thereby allowing the optical signal from the inner cavity of the first cavity to be incident on the optical receiving component connected to the third connection hole 5122.

[0115] In some embodiments, the second sidewall 512 may have a fourth connection hole 5121. The fourth connection hole 5121 may extend through the second sidewall 512 so that the fourth connection hole 5121 can communicate with the inner cavity of the first cavity, thereby allowing the optical signal from the inner cavity of the first cavity to be incident on the optical receiving component connected to the fourth connection hole 5121.

[0116] In some embodiments, the first housing 510 may include a third sidewall 513. One end of the third sidewall 513 may be connected to the other end of the second sidewall 512. The third sidewall 513 may be disposed opposite to the first sidewall 511. The third sidewall 513 may have a second connecting hole 5131. The second connecting hole 5131 may pass through the third sidewall 513 so that the second connecting hole 5131 can communicate with the inner cavity of the first cavity, thereby allowing the emitted light signal emitted by the light emitting component 400 to enter the first cavity along the second connecting hole 5131.

[0117] In some embodiments, the first housing 510 may include a fourth sidewall 514. One end of the fourth sidewall 514 may be connected to one end of the third sidewall 513. The other end of the fourth sidewall 514 may be connected to the other end of the first sidewall 511. The fourth sidewall 514 may be disposed opposite to the second sidewall 512.

[0118] In some embodiments, the fourth sidewall 514 may have a fifth connection hole 5141. The fifth connection hole 5141 may extend through the fourth sidewall 514 so that the fifth connection hole 5141 can communicate with the inner cavity of the first cavity, thereby allowing the optical signal from the inner cavity of the first cavity to be incident on the optical receiving component connected to the fifth connection hole 5141.

[0119] In some embodiments, the first housing 510 may include a base plate 5161. The base plate 5161 may be used to support the first optical component 517. The base plate 5161 may be connected to the bottom of the first sidewall 511, the second sidewall 512, the third sidewall 513, and the fourth sidewall 514, respectively. The first sidewall 511, the second sidewall 512, the third sidewall 513, and the fourth sidewall 514 are connected sequentially and respectively to the base plate 5161 to form a first housing 510 with an opening at the top.

[0120] In some embodiments, the third sidewall 513 may include a first connecting wall 5132. One end of the first connecting wall 5132 may be connected to the second sidewall 512.

[0121] In some embodiments, the third sidewall 513 may include a first support wall 5133. The first support wall 5133 is closer to the first sidewall 511 relative to the first connecting wall 5132. The first support wall 5133 may be connected to the first connecting wall 5132. The first support wall 5133 is more recessed relative to the first connecting wall 5132 so that the first support wall 5133 supports the first cover plate 515.

[0122] In some embodiments, the fourth sidewall 514 may include a second connecting wall 5143. One end of the second connecting wall 5143 may be connected to the first connecting wall 5132. The other end of the second connecting wall 5143 may be connected to the first sidewall 511.

[0123] In some embodiments, the fourth sidewall 514 may include a second support wall 5144. One end of the second support wall 5144 may be connected to the first support wall 5133. The other end of the second support wall 5144 may be connected to the first sidewall 511. The second support wall 5144 may be connected to the second connecting wall 5143. The second support wall 5144 is more recessed relative to the second connecting wall 5143 so that the second support wall 5144 supports the first cover plate 515.

[0124] The first support wall 5133 and the second support wall 5144 can jointly support the first cover plate 515 to increase the contact area between the first cover plate 515 and the first housing 510 and improve the connection stability between the first cover plate 515 and the first housing 510.

[0125] In some embodiments, the second support wall 5144 may include a first support portion 51441. One end of the first support portion 51441 may be connected to the first support wall 5133.

[0126] The diameter of the fifth connecting hole 5141 is equal to the thickness of the second connecting wall 5143. The second support wall 5144 protrudes relative to the second connecting wall 5143, causing the diameter of the fifth connecting hole 5141 to be larger than the thickness of the second support wall 5144. Therefore, the first support portion 51441 can have a clearance hole 5147. The clearance hole 5147 can communicate with the fifth connecting hole 5141 to avoid the fifth connecting hole 5141.

[0127] In some embodiments, the second support wall 5144 may include a second support portion 51444. One end of the second support portion 51444 may be connected to the other end of the first support portion 51441. The width of the second support portion 51444 is smaller than the width of the first support portion 51441, that is, the vertical distance between the second support portion 51444 and the second sidewall 512 is greater than the vertical distance between the first support portion 51441 and the second sidewall 512, so as to provide a receiving space for the first optical component 517.

[0128] In some embodiments, the second support wall 5144 may include a third support portion 51445. One end of the third support portion 51445 may be connected to the other end of the second support portion 51444. The other end of the third support portion 51445 may be connected to the first sidewall 511.

[0129] In some embodiments, the second support wall 5144 may include a support member 51442. One end of the support member 51442 may be connected to the side of the first support portion 51441. The other end of the support member 51442 is not connected to the second side wall 512 to avoid obstructing the first optical assembly 517. One side of the support member 51442 may not be connected to the third side wall 513. The other side of the support member 51442 may not be connected to the first side wall 511.

[0130] In some embodiments, the support member 51442 may have a first light-transmitting hole 51443. The first light-transmitting hole 51443 may penetrate the support member 51442 so that an optical signal can pass through the first light-transmitting hole 514443.

[0131] The support member 51442 and the second support wall 5144 can be an integrally formed structure or two independent structural members.

[0132] In some embodiments, the first light-transmitting hole 51443 may be correspondingly provided with the first connection hole 5111 so that the light signal passes through the first light-transmitting hole 51443 and is incident on the first connection hole 5111.

[0133] In some embodiments, the central axis of the first connecting hole 5111 (e.g.) Figure 9 As shown in Figure e) relative to the central axis of the first sidewall 511 (e.g.) Figure 9 (As shown in f) is closer to the fourth sidewall 514.

[0134] In some embodiments, the fourth sidewall 514 may have a step 5142. The step 5142 can provide sufficient space for the connecting sleeve 710 to increase the contact area between the connecting sleeve 710 and the first sidewall 511, thereby improving the connection stability between the connecting sleeve 710 and the first sidewall 511.

[0135] One side of step 5142 (such as) Figure 9 (as shown on the left) on the other side of step 5142 (as shown on the left) Figure 9 The step 5142 (shown on the right side) is more recessed, and one side of the step 5142 has a fifth connection hole 5141, in which a light receiving component can be disposed. The step 5142 can provide a space for the light receiving component in the fifth connection hole 5141, thereby reducing the width of the light receiving component 500.

[0136] Figure 11 This is an optical path diagram of a first optical component provided according to some embodiments. Figure 12 This is an optical path diagram of another first optical component provided according to some embodiments. For example... Figure 11 and Figure 12As shown, in some embodiments, the first optical component 517 may include a first lens 5171. The first lens 5171 is used to collimate / converge optical signals. For example, the received optical signal transmitted from the first cavity to the fiber optic adapter 700 is converged by the first lens 5171, and the optical signal transmitted from the fiber optic adapter 700 to the first cavity is collimated by the first lens 5171.

[0137] In some embodiments, the first optical component 517 may include a first filter 5173. The first filter 5173 may be located on one side of the first lens 5171 so that the first filter 5173 can reflect the received optical signal collimated by the first lens 5171.

[0138] The first filter 5173 can receive the emitted light signal and transmit the emitted light signal to the first lens 5171.

[0139] In some embodiments, the first filter 5173 is tilted so that the received optical signal can be reflected. For example, the tilt angle of the first filter 5173 is a first preset angle. The first preset angle can be 8° to 13°.

[0140] In some embodiments, the first optical component 517 may include a first reflective sheet 5174. The first reflective sheet 5174 can reflect the received optical signal. The first reflective sheet 5174 may be located in the reflected light path of the first filter 5173, thereby reflecting the received optical signal reflected from the first filter 5173 to the first reflective sheet 5174.

[0141] In some embodiments, the first reflective sheet 5174 is tilted. For example, the tilt angle of the first reflective sheet 5174 is a second preset angle, which can be 32° to 37°.

[0142] like Figure 11 and Figure 12 As shown, in some embodiments, the first optical component 517 may include a second reflector 5175. The second reflector 5175 can reflect the optical signal incident on it. The second reflector 5175 may be located in the reflected light path of the first reflector 5174, so that the received optical signal reflected by the first reflector 5174 to the second reflector 5175 is reflected.

[0143] In some embodiments, the second reflector 5175 is tilted. For example, the tilt angle of the second reflector 5175 is a third preset angle, which may be 45°.

[0144] The first preset angle, the second preset angle, and the third preset angle work together to ensure that the received light signal reflected by the second reflector 5175 can be emitted parallel to the length of the light receiving component 500.

[0145] like Figure 11 and Figure 12 As shown, in some embodiments, the first optical component 517 may include a wavelength division component 5172. The wavelength division component 5172 may be located in the reflected light path of the second reflector 5175, so that the wavelength division component 5172 can receive the received optical signal reflected by the second reflector 5175. The wavelength division component 5172 can split the received optical signal according to wavelength. For example, the wavelength division component 5172 can split a received optical signal including a first wavelength, a second wavelength, and a third wavelength into a first wavelength optical signal, a second wavelength optical signal, and a third wavelength optical signal according to wavelength.

[0146] In some embodiments, the first end of the wavelength division component 5172 has an incident light point. The received optical signal emitted by the fiber optic adapter 700, including a first wavelength, a second wavelength, and a third wavelength, is incident on the incident light point of the first end of the wavelength division component 5172 and reflected by the second end of the wavelength division component 5172.

[0147] In some embodiments, the first end of the wavelength division component 5172 has a first light-emitting point, and the second end of the wavelength division component 5172 has a second light-emitting point and a third light-emitting point. The received optical signal is divided into a first wavelength optical signal, a second wavelength optical signal, and a third wavelength optical signal by the wavelength division component 5172. The first wavelength optical signal is emitted through the first light-emitting point of the first end of the wavelength division component 5172, the second wavelength optical signal is emitted through the second light-emitting point of the second end of the wavelength division component 5172, and the third wavelength optical signal is emitted through the third light-emitting point of the second end of the wavelength division component 5172. This makes the emission direction of the optical signal transmitted through the first light-emitting point opposite to the emission direction of the optical signal transmitted through the second light-emitting point or the third light-emitting point, thereby improving the isolation.

[0148] like Figure 8 , Figure 11 and Figure 12 As shown, the first end of the wave splitter component 5172 can be correspondingly set to the first end of the first housing 510, and the second end of the wave splitter component 5172 can be correspondingly set to the second end of the first housing 510, so that the wave splitter component 5172 can be set along the length direction of the first housing 510.

[0149] The wavelength division multiplexing (WDM) component 5172 can be arranged along the length of the optical receiving component 500, that is, along the length of the first housing 510, to reduce the width of the first housing 510, and thus reduce the width of the optical receiving component 500. When the WDM component 5172 is arranged along the length of the first housing 510, the width of the first housing 510 to accommodate the WDM component 5172 only needs to be reduced to meet the requirements. Since the length of the receiving pins of the optical receiving component is small, the width of the first housing 510 is reduced, and the width of the optical receiving component 500 is also reduced.

[0150] In some embodiments, the first end and the second end of the wavelength division component 5172 are arranged in parallel so that the emitted optical signal incident on the second end of the wavelength division component 5172 and the emitted optical signal emitted through the first end of the wavelength division component 5172 are parallel to each other.

[0151] In some embodiments, the tilt angle of the first end of the wavelength division multiplexing (WDM) component 5172 is a first preset range, so that the received optical signal, including a first wavelength, a second wavelength, and a third wavelength, incident on the WDM component 5172 can be separated into a first wavelength optical signal, a second wavelength optical signal, and a third wavelength optical signal by the WDM component 5172. For example, the first preset range is 8° ± 1°.

[0152] Figure 13 This is a structural diagram of a wavelength division multiplexing (WDM) assembly according to some embodiments. Figure 8 , Figure 11 and Figure 13 As shown, in some embodiments, the wavelength division multiplexing (WDM) assembly 5172 may include a substrate 51721. The substrate 51721 is a block substrate. A first end face of the substrate 51721 corresponds to a first end of the light receiving component 500, and a second end face of the substrate 51721 corresponds to a second end of the light receiving component 500, such that the substrate 51721 is disposed along the length direction of the light receiving component 500. The first end face of the substrate 51721 may face the first connection hole 5111. The second end face of the substrate 51721 may face the second connection hole 5131.

[0153] The first end face and the second end face of the substrate 51721 are arranged parallel to each other so that the light signal incident on the substrate 51721 and the light signal emitted through the substrate 51721 are parallel to each other.

[0154] The first end face of the substrate 51721 can face the first connection hole 5111, and the second end face of the substrate 51721 can face the second connection hole 5131, so that the substrate 51721 can be arranged along the length direction of the first housing 510.

[0155] like Figure 8 , Figure 11 and Figure 13 As shown, in some embodiments, the wavelength division component 5172 may include a light incident point a. The light incident point a may be located on the first end face of the substrate 51721. The light incident point a may be located in the reflected light path of the second reflector 5175, so that the light incident point a can receive the received light signal reflected by the second reflector 5175.

[0156] In some embodiments, the light-incident area a may be a region on the first end face of the substrate 51721 corresponding to the second reflective sheet 5175, on which a waveplate is disposed. This waveplate allows light signals to pass through.

[0157] In some embodiments, the light-receiving area a may be an area on the first end face of the substrate 51721 corresponding to the second reflective sheet 5175 coated with an anti-reflective film. This anti-reflective film allows light signals to pass through.

[0158] The side wall of substrate 51721 near the light entrance a rests against the second side wall 512. There is a gap between the side wall of substrate 51721 away from the light entrance a and the fourth side wall 514 so that the emitted light signal can be transmitted through the gap between substrate 51721 and the fourth side wall 514.

[0159] The vertical distance between the side wall of the substrate 51721 away from the light entrance a and the second side wall 512 is less than the vertical distance between the first light-passing hole 51443 and the second side wall 512, so as to avoid the emitted light signal passing through the substrate 51721.

[0160] like Figure 8 , Figure 11 and Figure 13 As shown, in some embodiments, the wavelength division component 5172 may include a first reflector b. The first reflector b may be located on the second end face of the substrate 51721. The first reflector b may be disposed opposite to the light incident point a, so that the first reflector b can reflect the received light signal incident through the light incident point a.

[0161] In some embodiments, the first reflection point b may be a region on the second end face of the substrate 51721 opposite to the light incident point a, on which a waveplate is disposed. This waveplate does not allow light signals to pass through, but allows light signals to be reflected.

[0162] In some embodiments, the first reflective area b may be a region on the second end face of the substrate 51721 opposite to the light incident area a, coated with a high-reflectivity film. This high-reflectivity film does not allow light signals to pass through, but allows light signals to be reflected.

[0163] like Figure 8 , Figure 11 and Figure 13As shown, in some embodiments, the wavelength division multiplexing assembly 5172 may include a first waveplate 51722. The first waveplate 51722 may be disposed on a first end face of the substrate 51721. The first waveplate 51722 may be disposed adjacent to the light incident point a. The first waveplate 51722 may be connected to the light incident point a to reduce the size of the first end of the wavelength division multiplexing assembly 5172. The first waveplate 51722 may be located in the reflected light path of the first reflection point b, so that the received light signal reflected by the first reflection point b can be incident on the first waveplate 51722.

[0164] In some embodiments, the first waveplate 51722 can be a bandpass filter, which allows signals within a certain frequency range to pass through while blocking signals of other frequencies. For example, the first waveplate 51722 can allow a first wavelength of optical signal to pass through, and can also allow other wavelengths of optical signal to be reflected.

[0165] The first wave plate 51722 serves as the first light-emitting point of the wavelength division component 5172, allowing the first wavelength optical signal within the wavelength division component 5172 to be transmitted through the first wave plate 51722.

[0166] like Figure 8 , Figure 11 and Figure 13 As shown, in some embodiments, the wavelength division component 5172 may include a second waveplate 51723. The second waveplate 51723 may be disposed on the second end face of the substrate 51721. The second waveplate 51723 may be disposed adjacent to the first reflection point b. The second waveplate 51723 may be located in the reflected light path of the first waveplate 51722, so that the received light signal reflected by the first waveplate 51722 can be incident on the second waveplate 51723.

[0167] In some embodiments, the second waveplate 51723 can be a bandpass filter, which allows signals within a certain frequency range to pass through while blocking signals of other frequencies. For example, the second waveplate 51723 can allow a second wavelength of light signal to pass through, or it can allow other wavelengths of light signal to be reflected.

[0168] The second wave plate 51723 serves as the second light output point of the wavelength division component 5172, allowing the second wavelength optical signal within the wavelength division component 5172 to be transmitted through the second wave plate 51723.

[0169] In some embodiments, the wavelength division component 5172 may include a second reflection point c. The second reflection point c may be disposed adjacent to the first waveplate 51722, such that the first waveplate 51722 may be located between the incident light point a and the second reflection point c. The second reflection point c may be located in the reflected light path of the second waveplate 51723, so that the second reflection point c can reflect the received light signal reflected by the second waveplate 51723.

[0170] In some embodiments, the second reflection point c may be a region on the first end face of the substrate 51721 adjacent to the first waveplate 51722 where a waveplate is disposed. This waveplate does not allow light signals to pass through, but allows light signals to be reflected.

[0171] In some embodiments, the second reflective area c may be a region on the first end face of the substrate 51721 adjacent to the first waveplate 51722 coated with a high-reflectivity film. This high-reflectivity film does not allow light signals to pass through, but allows light signals to be reflected.

[0172] In some embodiments, the wavelength division component 5172 may include a third waveplate 51724. The third waveplate 51724 is disposed on the second end face of the substrate 51721. The third waveplate 51724 may be disposed adjacent to the second waveplate 51723. The third waveplate 51724 may be located in the reflected light path at the second reflection point c, so that the received light signal reflected by the second reflection point c can be incident on the third waveplate 51724.

[0173] In some embodiments, the third waveplate 51724 can be a bandpass filter, which allows signals within a certain frequency range to pass through while blocking signals of other frequencies. For example, the third waveplate 51724 can allow a third wavelength of light to pass through, or it can allow other wavelengths of light to be reflected.

[0174] The third waveplate 51724 serves as the third light output point of the wavelength division component 5172, allowing the third wavelength optical signal within the wavelength division component 5172 to be transmitted through the third waveplate 51724.

[0175] In some embodiments, the second waveplate 51723 and the third waveplate 51724 may be connected to reduce the size of the second end face of the substrate 51721.

[0176] Figure 14 This is a cross-sectional view of an optical transceiver component according to some embodiments. Figure 10 and Figure 14 As shown, in some embodiments, a first lens 5171 may be provided in the first connection hole 5111 to reduce the length of the first housing 510.

[0177] In some embodiments, the first lens 5171 may be disposed within the receiving cavity 516.

[0178] In some embodiments, an isolator 518 may be provided within the second connection hole 5131. The isolator 518 may allow the emitted light signal emitted by the light emitting component 400 to be incident on the light receiving component 500, and prevent the emitted light signal incident on the light receiving component 500 from returning to the light emitting component 400.

[0179] In some embodiments, a first optical receiving component 520 may be disposed within the third connection hole 5122.

[0180] In some embodiments, a second light receiving component 530 may be disposed within the fourth connection hole 5121.

[0181] In some embodiments, a third optical receiving component 540 may be disposed within the fifth connection hole 5141.

[0182] In some embodiments, the first optical component 517 may include a third reflector 5176. The third reflector 5176 may be located in the transmission optical path of the first waveplate 51722, so that the third reflector 5176 can receive the first wavelength optical signal transmitted by the first waveplate 51722. The third reflector 5176 can reflect the received first wavelength optical signal. The third connection hole 5122 may be located in the reflection optical path of the third reflector 5176, so that the first light receiving component 520 within the third connection hole 5122 can be located in the reflection optical path of the third reflector 5176, thereby allowing the third reflector 5176 to reflect the first wavelength optical signal to the first light receiving component 520.

[0183] In some embodiments, the third reflector 5176 may include a reflective surface. The reflective surface may be located in the transmission light path of the first waveplate 51722, and the first light receiving component 520 may be located in the reflection light path of the reflective surface, so that the first wavelength light signal transmitted through the first waveplate 51722 is reflected by the reflective surface to the first light receiving component 520.

[0184] In some embodiments, the tilt angle of the reflective surface of the third reflector 5176 is not 45°, so that the first wavelength light signal is reflected by the reflective surface of the third reflector 5176 and then incident obliquely onto the first light receiving component 520, thereby reducing the return of the first wavelength light signal along the original path when it reaches the first light receiving component 520.

[0185] In some embodiments, the third reflector 5176 may include an incident surface. The incident surface may be located between the first waveplate 51722 and the reflecting surface. One end of the incident surface may be connected to one end of the reflecting surface.

[0186] In some embodiments, the third reflector 5176 may include an exit surface. The exit surface may be located between the reflective surface and the first light receiving component 520. One end of the exit surface may be connected to the other end of the reflective surface. The other end of the exit surface may be connected to the other end of the incident surface.

[0187] In some embodiments, the incident or exit surface of the third reflector 5176 is coated with a filter film to filter out received light signals of other wavelengths besides the first wavelength, so that the first wavelength light signal can be incident on the first light receiving component 520, and the second wavelength light signal and the third wavelength light signal are prevented from being incident on the first light receiving component 520.

[0188] Alternatively, in some embodiments, a filter may be provided between the third reflector 5176 and the first wave plate 51722 or between the third reflector 5176 and the first light receiving component 520 to filter out received light signals of wavelengths other than the first wavelength.

[0189] The incident or exit surface of the third reflector 5176 is coated with a filter film, which can effectively reduce the space occupied by the first optical component and thus reduce the space of the first housing compared to setting a filter.

[0190] The first filter 5173 and the first reflector 5174 are both located in opposite directions to the reflected light path of the third reflector 5176, and the first light receiving component 520 is located in the reflected light path of the third reflector 5176 to reduce the size of the light receiving component 500.

[0191] In some embodiments, the first optical component 517 may include a beam splitter 5177. The beam splitter 5177 may include a first reflective surface 51771. The first reflective surface 51771 may be located in the transmission optical path of the second waveplate 51723, so that the first reflective surface 51771 can receive the second wavelength optical signal transmitted by the second waveplate 51723. The fourth connection hole 5121 may be located in the reflection optical path of the first reflective surface 51771, so that the second light receiving component 530 within the fourth connection hole 5121 may be located in the reflection optical path of the first reflective surface 51771, thereby allowing the first reflective surface 51771 to reflect the second wavelength optical signal to the second light receiving component 530.

[0192] In some embodiments, the beam splitter 5177 may include a second reflective surface 51772. The second reflective surface 51772 may be located in the transmission optical path of the third waveplate 51724, so that the second reflective surface 51772 can receive the third wavelength light signal transmitted by the third waveplate 51724. The fifth connection hole 5141 may be located in the reflection optical path of the second reflective surface 51772, so that the third light receiving component 540 within the fifth connection hole 5141 may be located in the reflection optical path of the second reflective surface 51772, thereby allowing the second reflective surface 51772 to reflect the third wavelength light signal to the third light receiving component 540.

[0193] The first reflecting surface 51771 and the second reflecting surface 51772 of the beam splitter 5177 can be connected or not.

[0194] In some embodiments, the beam splitter 5177 may include a first incident surface. The first incident surface may be located between the first reflecting surface 51771 and the second waveplate 51723. One end of the first incident surface may be connected to one end of the first reflecting surface 51771.

[0195] In some embodiments, the beam splitter 5177 may include a first exit surface. The first exit surface may be located between the first reflecting surface and the second light receiving component 530. One end of the first exit surface may be connected to the other end of the first reflecting surface 51771. The other end of the first exit surface may be connected to the other end of the first incident surface.

[0196] In some embodiments, a filter film is coated on the first incident surface or the first exit surface to filter out received optical signals of other wavelengths besides the second wavelength, so that the second wavelength optical signal can be incident on the second optical receiving component 530, and the first wavelength optical signal and the third wavelength optical signal are prevented from being incident on the second optical receiving component 530.

[0197] Alternatively, in some embodiments, a filter may be provided between the beam splitter 5177 and the second waveplate 51723, or between the beam splitter 5177 and the second light receiving component 530, to filter out received light signals of wavelengths other than the second wavelength. For example... Figure 12 As shown, a second filter 5179 is disposed between the beam splitter 5177 and the second waveplate 51723. The second filter 5179 can filter out received light signals of wavelengths other than the second wavelength.

[0198] In some embodiments, the beam splitter 5177 may include a second incident surface. The second incident surface may be located between the second reflecting surface 51772 and the second waveplate 51723. One end of the second incident surface may be connected to one end of the second reflecting surface 51772.

[0199] In some embodiments, the beam splitter 5177 may include a second exit surface. The second exit surface may be located between the second reflecting surface 51772 and the third light receiving component 540. One end of the second exit surface may be connected to the other end of the second reflecting surface 51772. The other end of the second exit surface may be connected to the other end of the second incident surface.

[0200] In some embodiments, a filter film is coated on the second incident surface or the second exit surface to filter out received optical signals of other wavelengths except the third wavelength, so that the third wavelength optical signal can be incident on the third optical receiving component 540, and the second wavelength optical signal and the third wavelength optical signal are prevented from being incident on the third optical receiving component 540.

[0201] Alternatively, in some embodiments, a filter may be provided between the beam splitter 5177 and the third waveplate 51724, or between the beam splitter 5177 and the third light receiving component 540, to filter out received light signals of wavelengths other than the third wavelength. For example... Figure 11 As shown, a third filter 5178 is disposed between the beam splitter 5177 and the third waveplate 51724. The third filter 5178 can filter out received light signals of wavelengths other than the third wavelength.

[0202] like Figure 10 and Figure 14 As shown, a first filter 5173 may be provided on the side of the support member 51442 facing the first sidewall 511. The emitted optical signal is transmitted to the first filter 5173 through the first light-transmitting hole 51443 of the support member 51442, and then transmitted to the first lens 5171 through the first filter 5173. The received optical signal is collimated by the first lens 5171 and then incident on the first filter 5173, and reflected out by the first filter 5173.

[0203] Because the first filter 5173 is tilted, the emitted light signal is incident on the first filter 5173 at an angle. The emitted light signal is refracted on both the light-incident surface and the light-exit surface of the first filter 5173, causing the central axis of the emitted light signal to shift on both the light-incident surface and the light-exit surface of the first filter 5173. Therefore, the central axis of the first connecting hole 5111 is offset relative to the central axis of the first light-transmitting hole 51443.

[0204] Because the first filter 5173 is tilted, in order to increase the connection stability between the first filter 5173 and the support member 51442, in some embodiments, the side of the support member 51442 facing the first sidewall 511 can be parallel to the first filter 5173. That is, the tilt angle of the side of the support member 51442 facing the first sidewall 511 is equal to the tilt angle of the first filter 5173. For example, the tilt angle of the side of the support member 51442 facing the first sidewall 511 is a first preset angle.

[0205] like Figure 10 and Figure 14 As shown, in some embodiments, a first reflective sheet 5174 may be disposed on the side of the third support portion 51445 facing the support member 51442. The side of the third support portion 51445 may be disposed at an angle so that the first reflective sheet 5174 is located on the reflected light path of the first filter 5173.

[0206] Because the first reflective sheet 5174 is tilted, in order to increase the connection stability between the first reflective sheet 5174 and the third support portion 51445, in some embodiments, the side of the third support portion 51445 facing the support member 51442 can be arranged parallel to the first reflective sheet 5174. That is, the tilt angle of the side of the third support portion 51445 facing the support member 51442 is equal to the tilt angle of the first reflective sheet 5174. For example, the tilt angle of the side of the third support portion 51445 facing the support member 51442 is a second preset angle.

[0207] In some embodiments, the receiving rate of the first optical receiving component 520 is greater than that of the second optical receiving component 530 and the third optical receiving component 540, resulting in the receiving photosensitive surface of the first optical receiving component 520 being smaller than that of the second optical receiving component 530 and the third optical receiving component 540. This makes the transmission path of the first wavelength optical signal received by the first optical receiving component 520 the shortest, and the optical receiving chip of the first optical receiving component 520 can receive the first wavelength optical signal with high coupling efficiency.

[0208] like Figure 11 , Figure 12 and Figure 14 As shown, the optical path is as follows:

[0209] The emitted optical signal is transmitted through the first filter 5173 and then focused and coupled to the fiber optic adapter 700 by the first lens 5171.

[0210] The received optical signal is first collimated by the first lens 5171, then reflected sequentially by the first filter 5173, the first reflector 5174, and the second reflector 5175 before entering the incident point a of the wavelength division multiplexing assembly 5172, and is reflected again by the first reflector b. The first wavelength optical signal in the received optical signal is transmitted through the first waveplate 51722 and finally reflected by the third reflector 5176.

[0211] The second wavelength optical signal in the received optical signal is reflected by the first wave plate 51722, transmitted through the second wave plate 51723, and then reflected by the first reflecting surface 51771 of the beam splitter 5177.

[0212] The second wavelength optical signal in the received optical signal is reflected sequentially by the first waveplate 51722, the second waveplate 51723, and the second reflection point c, then transmitted through the third waveplate 51724, and finally reflected by the second reflecting surface 51772 of the beam splitter 5177.

[0213] Figure 15 This is an assembly diagram of an optical transceiver and fiber optic adapter provided according to some embodiments, viewed from another perspective. Figure 16 This is a structural diagram of a light-emitting component according to some embodiments. Figure 5 and Figure 15 As shown, in some embodiments, the light emitting component 400 may include a second cavity. The second cavity may be connected to 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.

[0214] like Figure 15 and Figure 16 As shown, in some embodiments, the second cavity may include a second housing 410.

[0215] like Figure 15 and Figure 16 As shown, in some embodiments, the second cavity may include a second cover plate 415. The second cover plate 415 may cover the second housing 410 to form the second cavity. A second optical component 430 may be disposed within the second cavity. The second optical component 430 may emit at least one optical signal. For example, the second optical component 430 may emit a fourth wavelength optical signal, a fifth wavelength optical signal, and a sixth wavelength optical signal.

[0216] During the assembly process, the second optical component 430 is first fixed inside the second housing 410, and then the second cover plate 415 is placed on the second housing 410 to form the second cavity.

[0217] like Figure 5 and Figure 15 As shown, the openings of the first housing 510 and the second housing 410 face opposite directions. For example, the opening of the first housing 510 faces the upper housing 201, and the opening of the second housing 410 faces the lower housing 202.

[0218] In some embodiments, the openings of the first housing 510 and the second housing 410 face the same direction. For example, the openings of both the first housing 510 and the second housing 410 face the upper housing 201.

[0219] Figure 17 This is an exploded view of a second housing and electrical connection according to some embodiments. Figure 16 and Figure 17 As shown, in some embodiments, the second housing 410 has a notch 417. An electrical connector 420 can be positioned at the notch 417 so that one end of the electrical connector 420 can be connected to the second optical component 430, thereby enabling electrical signal transmission between the electrical connector 420 and the second optical component 430. The other end of the electrical connector 420 can be connected to the circuit board 300, enabling electrical signal transmission between the circuit board 300 and the electrical connector 420.

[0220] A notch 417 is formed in the middle part of the side wall of the second housing 410. The notch 417 does not extend beyond the top and bottom surfaces of the side wall of the second housing 410, so that the notch 417 is not connected to the opening of the second housing 410.

[0221] In some embodiments, the notch 417 does not extend beyond the bottom surface of the side wall of the second housing 410, but extends beyond the top surface of the side wall of the second housing 410, so that the notch 417 communicates with the opening of the second housing 410.

[0222] In some embodiments, the second housing 410 may include a base plate 416. The base plate 416 may be used to support the second optical component 430.

[0223] In some embodiments, the second housing 410 may include a first sidewall 411. The bottom of the first sidewall 411 may be connected to the base plate 416. The first sidewall 411 may be connected to the light receiving component 500. The first sidewall 411 may have a sixth connection hole 4111. The sixth connection hole 4111 may penetrate the first sidewall 411. The sixth connection hole 4111 may communicate with the inner cavity of the second cavity, thereby allowing the emitted light signal emitted by the light emitting component 400 to be transmitted to the light receiving component 500 through the sixth connection hole 4111.

[0224] In some embodiments, the second housing 410 may include a second sidewall 412. The bottom of the second sidewall 412 may be connected to the base plate 416. One end of the second sidewall 412 may be connected to one end of the first sidewall 411.

[0225] In some embodiments, the second housing 410 may include a third sidewall 413. The bottom of the third sidewall 413 may be connected to a base plate. One end of the third sidewall 413 may be connected to the other end of the second sidewall 412. The third sidewall 413 is disposed opposite to the first sidewall 411.

[0226] In some embodiments, the second housing 410 may include a fourth sidewall 414. The bottom of the fourth sidewall 414 may be connected to a base plate. One end of the fourth sidewall 414 may be connected to the other end of the third sidewall 413. The other end of the fourth sidewall 414 may be connected to the other end of the first sidewall 411. The fourth sidewall 414 may be disposed opposite to the second sidewall 412.

[0227] The first sidewall 411, the second sidewall 412, the third sidewall 413 and the fourth sidewall 414 are connected in sequence and are respectively connected to the bottom plate 416 to form a second shell 410 with an opening.

[0228] Figure 18 This is an optical path diagram of a second optical component provided according to some embodiments. Figure 19This is an optical path diagram of another second optical component provided according to some embodiments. For example... Figure 18 and Figure 19 As shown, in some embodiments, the second optical component 430 may include a laser chipset 431. The laser chipset 431 may be connected to an electrical connector 420 to emit an optical signal according to an electrical signal provided by the electrical connector 420.

[0229] In some embodiments, the laser chipset 431 may include a first laser chip 4311. The first laser chip 4311 is connected to an electrical connector 420 so that the first laser chip 4311 emits a fourth wavelength optical signal according to an electrical signal provided by the electrical connector 420.

[0230] Since the output power of the fourth wavelength optical signal is relatively large compared to the fifth and sixth wavelength optical signals, the first laser chip 4311 may include a distributed feedback laser (DFB), an electro-absorption modulator (EAM), and a semiconductor optical amplifier (SOA). The DFB emits the fourth wavelength light, the EAM modulates the fourth wavelength light to obtain the fourth wavelength optical signal, and the SOA amplifies the fourth wavelength optical signal so that the output power of the fourth wavelength optical signal meets the requirements.

[0231] The presence of SOA causes the first laser chip 4311 to be tilted. Although the first laser chip 4311 is tilted, the direction of the fourth wavelength light signal output by the first laser chip 4311 is parallel to the length direction of the second housing 410, so as to reduce the reflection of the light signal at the end face of the output port of the first laser chip 4311, effectively reducing the reflected light signal from entering the first laser chip 4311 and interfering with the emission of the first laser chip 4311.

[0232] In some embodiments, the laser chipset 431 may include a second laser chip 4312. The second laser chip 4312 is connected to an electrical connector 420 so that the second laser chip 4312 emits a fifth wavelength optical signal according to an electrical signal provided by the electrical connector 420.

[0233] The fifth wavelength optical signal has a wavelength of 1480-1500nm, which falls within the low dispersion region of the optical fiber. Chirp-induced dispersion has a relatively small impact on the signal, and the chirp effect of the DFB will not significantly affect the signal quality. Therefore, the second laser chip 4312 is a directly modulated laser (DML). DML is also known as DFB. The circuit board 300 provides a drive signal via electrical connector 420 to enable the DFB to emit the fifth wavelength optical signal.

[0234] In some embodiments, the laser chipset 431 may include a third laser chip 4313. The third laser chip 4313 is connected to the electrical connector 420 so that the third laser chip 4313 emits a sixth wavelength optical signal according to the electrical signal provided by the electrical connector 420.

[0235] The sixth wavelength optical signal has a wavelength of 1575-1580nm. This wavelength falls within the high dispersion region of the optical fiber, where chirp-induced dispersion has a significant impact on the signal. Using an externally modulated laser (EML) can reduce the chirp effect, thereby minimizing the impact of dispersion on the signal and ensuring high-quality signal transmission. Therefore, the third laser chip 4313 is an EML. The EML includes a DFB and an EAM. The circuit board 300 provides a first drive signal and a second drive signal via electrical connector 420. The first drive signal causes the DFB to emit the sixth wavelength light, and the second drive signal causes the EAM to modulate and output the sixth wavelength optical signal.

[0236] In some embodiments, the second optical component 430 may include a lens component 432. The lens component 432 may include a second lens 4321. The second lens 4321 may be located in the output optical path of the first laser chip 4311 so that the second lens 4321 collimates the fourth wavelength optical signal emitted by the first laser chip 4311.

[0237] In some embodiments, the lens assembly 432 may include a third lens 4322. The third lens 4322 may be located in the output light path of the second laser chip 4312 so that the third lens 4322 collimates the fifth wavelength light signal emitted by the second laser chip 4312.

[0238] In some embodiments, the lens assembly 432 may include a fourth lens 4323. The fourth lens 4323 may be located in the output light path of the third laser chip 4313 so that the fourth lens 4323 collimates the sixth wavelength light signal emitted by the third laser chip 4313.

[0239] In some embodiments, the second optical component 430 may include a wavelength multiplexing component 433. The wavelength multiplexing component 433 may include a wavelength division multiplexer. The inlet side of the wavelength multiplexer faces the laser chip group 431, and the outlet side of the wavelength multiplexer faces the sixth connection hole 4111. The wavelength multiplexer combines the fourth wavelength optical signal, the fifth wavelength optical signal, and the sixth wavelength optical signal emitted by the laser chip group 431 into a single emitted optical signal.

[0240] In some embodiments, the beam combiner 433 may include a polarization component and a polarization beam combiner. The polarization component is used to adjust the polarization direction of the optical signal, and the polarization beam combiner combines multiple polarized beams into one beam. By adjusting the polarization direction of the optical signal through the polarization component and then combining multiple polarized beams into one beam through the polarization beam combiner, the light emitting component can achieve beam combining.

[0241] In some embodiments, the multiplexing component 433 may include a plurality of filters that cooperate with each other to combine the fourth wavelength optical signal, the fifth wavelength optical signal and the sixth wavelength optical signal into a single emitted optical signal.

[0242] like Figure 18 and Figure 19 As shown, the beam combiner assembly 433 may include a fourth filter 4331. The fourth filter 4331 may include an incident surface and an exit surface, both of which are located in the collimating optical path of the second lens 4321, that is, between the second lens 4321 and the sixth connecting hole 4111, so that the fourth wavelength optical signal can be incident on the fourth filter 4331 through the incident surface and transmitted out through the exit surface of the fourth filter 4331.

[0243] The beam combiner assembly 433 may include a fifth filter 4332. The fifth filter 4332 may include an incident surface, a filtering surface, and an exit surface. The incident surface and the filtering surface are both located in the collimating optical path of the third lens 4322, and the exit surface is located in the reflected optical path of the filtering surface, so that the fifth wavelength light signal can be incident on the fifth filter 4332 through the incident surface, reflected by the filtering surface of the fifth filter 4332, and finally emitted at the exit surface.

[0244] The exit surface of the fifth filter 4332 is connected to the exit surface of the fourth filter 4331 so that the fifth wavelength light signal is emitted through the exit surface of the fifth filter 4332 and then reflected by the exit surface of the fourth filter 4331.

[0245] The beam combiner assembly 433 may include a sixth filter 4333. The sixth filter 4333 may include an incident surface, a filtering surface, and an exit surface. The incident surface and the filtering surface are both located in the collimating optical path of the fourth lens 4323, and the exit surface is located in the reflected optical path of the filtering surface, so that the sixth wavelength light signal can be incident on the sixth filter 4333 through the incident surface, reflected by the filtering surface of the sixth filter 4333, and finally emitted at the exit surface.

[0246] The exit surface of the sixth filter 4333 is connected to the filter surface of the fifth filter 4332, so that the sixth wavelength light signal is emitted through the exit surface of the sixth filter 4333, transmitted through the filter surface of the fifth filter 4332, emitted through the exit surface of the fifth filter 4332, and finally reflected by the exit surface of the fourth filter 4331.

[0247] The exit surface of the sixth filter 4333 is connected to the filter surface of the fifth filter 4332, and the exit surface of the fifth filter 4332 is connected to the exit surface of the fourth filter 4331 to increase the stability of the multiplexing assembly 433.

[0248] To prevent the emitted light signal incident on the light receiving component 500 from returning to the laser chipset 431, in some embodiments, no isolator is provided within the light emitting component 400, such as... Figure 18 As shown. For example, an isolator 518 is disposed within the optical receiving component 500. The isolator 518 can prevent a beam of emitted optical signal incident on the optical receiving component 500 from returning to the optical emitting component 400, as... Figure 14 As shown.

[0249] like Figure 19 As shown, in some embodiments, the second optical component 430 may include an isolator group 434. The isolator group 434 may include a first isolator 4341. The first isolator 4341 may be located between the second lens 4321 and the fourth filter 4331 to prevent the fourth wavelength optical signal from returning to the first laser chip 4311 via the first isolator 4341.

[0250] In some embodiments, the isolator group 434 may include a second isolator 4342. The second isolator 4342 may be located between the third lens 4322 and the fifth filter 4332 to prevent the fifth wavelength optical signal from returning to the second laser chip 4312 via the second isolator 4342.

[0251] In some embodiments, isolator group 434 may include a third isolator 4343. The third isolator 4343 may be located between the fourth lens 4323 and the sixth filter 4333 to prevent the sixth wavelength optical signal from returning to the third laser chip 4313 via the third isolator 4343.

[0252] The isolator includes a first polarizer, a Faraday plate, and a second polarizer. The Faraday plate rotates in the same direction. Polarized light passing through the first polarizer cannot return to the first polarizer after the Faraday rotation, so that the isolator composed of the first polarizer, the Faraday plate, and the second polarizer has the function of reverse isolation.

[0253] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure, and are not intended to limit them. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this disclosure.

Claims

1. An optical module, characterized in that, include: An optical receiving component, with its first end connected to an optical fiber adapter and its second end connected to an optical transmitting component, includes: First shell; First optical receiving component; The second optical receiving component is located on one side wall of the first housing, along with the first optical receiving component; The third optical receiving component is located on the other side wall of the first housing; Optical components, including: The first filter is located between the light emitting component and the optical fiber adapter to enable the transmission of the emitted optical signal and the reflection of the received optical signal. The first reflective sheet is located on the reflected light path of the first filter; The second reflector is located on the reflected light path of the first reflector; A wavelength division multiplexing (WDM) component has a first end corresponding to the first end of the first housing and a second end corresponding to the second end of the first housing. The first end of the WDM component includes an incident light point and a first exit light point. The incident light point is located on the reflected light path of the second reflector. The incident light point and the first exit light point are adjacent to each other. The second end of the WDM component includes a second exit light point and a third exit light point. The received optical signal is incident on the WDM component through the incident light point and then split into beams. The first wavelength optical signal is transmitted through the first exit light point, the second wavelength optical signal is transmitted through the second exit light point, and the third wavelength optical signal is transmitted through the third exit light point. The third reflector is located on the outgoing light path of the first light-emitting point; the first light-receiving component is located on the reflected light path of the third reflector; the first filter and the first reflector are both located in opposite directions on the reflected light path of the third reflector. A beam splitter includes a first reflecting surface and a second reflecting surface. The first reflecting surface is located on the outgoing light path at the second light-emitting point, and the second light-receiving component is located on the reflected light path of the first reflecting surface. The second reflecting surface is located on the outgoing light path at the third light-emitting point, and the third light-receiving component is located on the reflected light path of the second reflecting surface.

2. The optical module according to claim 1, characterized in that, The first housing includes: The first sidewall is connected to the fiber optic adapter; The second sidewall is connected at one end to one end of the first sidewall; the second sidewall is provided with the first light receiving component and the second light receiving component. The third sidewall is connected at one end to the other end of the second sidewall and is connected to the light emitting component. The fourth sidewall has one end connected to the other end of the third sidewall and the other end connected to the other end of the first sidewall. The fourth sidewall is provided with the third light receiving component, the first filter and the first reflector, so that the first wavelength light signal is reflected by the third reflector and directed to the first light receiving component provided on the second sidewall.

3. The optical module according to claim 1, characterized in that, The tilt angle of the first filter is a first preset angle, the tilt angle of the first reflector is a second preset angle, and the tilt angle of the second reflector is a third preset angle. The first preset angle, the second preset angle, and the third preset angle cooperate with each other to make the received optical signal emitted parallel to the length direction of the optical receiving component.

4. The optical module according to claim 2, characterized in that, The fourth sidewall includes: The first support portion has a connection hole; the third optical receiving component is disposed in the connection hole; The support member has one end connected to the side of the first support portion and the other end not connected to the second sidewall. It is also not connected to the first sidewall on one side and not connected to the third sidewall on the other. The support member has a first light-transmitting hole, which corresponds to a first connection hole on the first sidewall and a second connection hole on the third sidewall, so that the emitted light signal sequentially passes through the second connection hole, the first light-transmitting hole, the first filter, and the first connection hole to enter the fiber optic adapter. The second support portion has one end connected to the other end of the support member; the vertical distance between the second support portion and the second side wall is greater than the vertical distance between the first support portion and the second side wall; The third support part has one end connected to the other end of the second support part and the other end connected to the first sidewall; the surface of the third support part facing the second sidewall is provided with the first reflective sheet.

5. The optical module according to claim 4, characterized in that, The wavelength division component includes a substrate, wherein a sidewall of the substrate near the light-incident point rests against a second sidewall, and the vertical distance between the sidewall of the substrate away from the light-incident point and the second sidewall is less than the vertical distance between the first light-transmitting aperture and the second sidewall, so as to prevent the emitted light signal from passing through the substrate.

6. The optical module according to claim 1, characterized in that, The wavelength division component includes: A substrate has a first end corresponding to the first end of the light receiving component and a second end corresponding to the second end of the light receiving component; the second end of the substrate has a first reflective portion, which allows the received light signal to be reflected; the first end of the substrate has a light incident portion and a second reflective portion, whereby the light incident portion allows the received light signal to be transmitted and the second reflective portion allows the third wavelength light signal to be reflected. A first wave plate is disposed between the light incident point and the second reflection point to allow the transmission of a first wavelength light signal; The second wave plate is disposed adjacent to the first reflection point to allow the transmission of the second wavelength light signal; The third waveplate is disposed adjacent to the second waveplate to allow the transmission of a third wavelength of light signal.

7. The optical module according to claim 1, characterized in that, A first filter is provided between the reflective surface of the third reflective sheet and the first light-emitting point, or between the reflective surface of the third reflective sheet and the first light-receiving component. The first filter is used to filter out the second wavelength light signal and the third wavelength light signal. A second filter is provided between the first reflective surface and the second light-emitting point, or between the first reflective surface and the second light-receiving component. The second filter is used to filter out the first wavelength light signal and the third wavelength light signal. A third filter is disposed between the second reflective surface and the third light-emitting point, or between the second reflective surface and the third light-receiving component, the third filter being used to filter out the first wavelength light signal and the second wavelength light signal.

8. The optical module according to claim 1, characterized in that, An isolator is provided between the light emitting component and the first optical component. The isolator is used to block the emitted light signal from returning along the original path. The emitted light signal includes a fourth wavelength light signal, a fifth wavelength light signal and a sixth wavelength light signal. Alternatively, an isolator array may be provided inside the optical emitting component. The isolator array includes a first isolator, a second isolator, and a third isolator. The first isolator is used to block the fourth wavelength optical signal from returning along the original path, the second isolator is used to block the fifth wavelength optical signal from returning along the original path, and the third isolator is used to block the sixth wavelength optical signal from returning along the original path.

9. An optical module, characterized in that, include: A light-emitting component used to emit light signals; The optical receiving component includes: The first housing includes a first sidewall, a second sidewall, a third sidewall, and a fourth sidewall. The first sidewall is connected to the fiber optic adapter, and the third sidewall is connected to the light emitting component. The first optical receiving component is embedded in the second sidewall; The second optical receiving component is embedded in the second sidewall; The third optical receiving component is embedded in the fourth side wall; The optical component, located within the first housing, includes: A first filter is located between the light emitting component and the optical fiber adapter, and is used to transmit the emitted light signal and reflect the received light signal emitted by the optical fiber adapter. The first reflective sheet and the first filter are both disposed on the fourth sidewall and are used to reflect the received light signal reflected by the first filter; The second reflector is used to reflect the received optical signal reflected by the first reflector; A wavelength division multiplexing (WDM) component is used to receive the received optical signal reflected by the second reflector. The first end of the WDM component is correspondingly disposed with the first end of the first housing, and the second end of the WDM component is correspondingly disposed with the second end of the first housing. The first end of the WDM component includes an incident light point and a first exit light point, which are adjacent to each other. The second end of the WDM component includes a reflection point, a second exit light point, and a third exit light point, with the second exit light point located between the reflection point and the third exit light point. After the received optical signal passes through the incident light point and the reflection point, a first wavelength optical signal is transmitted through the first exit light point, a second wavelength optical signal is transmitted through the second exit light point, and a third wavelength optical signal is transmitted through the third exit light point. The third reflector is used to reflect the first wavelength optical signal to the first optical receiving component; The beam splitter includes a first reflecting surface and a second reflecting surface. The first reflecting surface is used to reflect the second wavelength optical signal to the second optical receiving component, and the second reflecting surface is used to reflect the third wavelength optical signal to the third optical receiving component.

10. The optical module according to claim 9, characterized in that, The first sidewall has a first connecting hole, and the central axis of the first connecting hole is closer to the fourth sidewall than the central axis of the first sidewall.

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