Optical module

Abstract

The utility model discloses an optical module which comprises a laser assembly, polarization assemblies and a polarization wave combining assembly, the laser assembly emits optical signals of multiple wavelengths, the first polarization assembly emits horizontal polarized light, the second polarization assembly emits second vertical polarized light, and the third polarization assembly emits first vertical polarized light. The polarization wave combining assembly comprises a first polarization wave combining piece, a second polarization wave combining piece and a third polarization wave combining piece, the third polarization wave combining piece reflects the first vertical polarized light to the second polarization wave combining piece, and the second polarization wave combining piece transmits the first vertical polarized light to the first polarization wave combining piece and further reflects the second vertical polarized light to the first polarization wave combining piece; the first polarization combiner reflects the first vertical polarized light and the second vertical polarized light and transmits the horizontal polarized light to realize beam combination. According to the invention, the polarization direction of the optical signal is adjusted through the polarization assembly, and then multiple polarized light beams are combined into one beam through the polarization wave combination assembly, so that the light emission part realizes wave combination.

Description

Technical Field

[0001] The present disclosure relates to the technical field of optical fiber communication, and in particular to an optical module. Background Art

[0002] With the development of new services and application models such as cloud computing, mobile Internet, and video, the development and progress of optical communication technology has become increasingly important. In optical communication technology, optical modules are tools for realizing the mutual conversion of optical and electrical signals, and are one of the key components in optical communication equipment. In addition, with the development of optical communication technology, the transmission rate of optical modules is constantly increasing. Utility Model Content

[0003] The present application provides an optical module to achieve beam combining.

[0004] An optical module, comprising:

[0005] Light emitting components, including:

[0006] A laser assembly, configured to emit a first wavelength optical signal, a second wavelength optical signal, and a third wavelength optical signal;

[0007] A polarization component, used for adjusting the polarization direction of an optical signal; the polarization component comprises a first polarization component, a second polarization component and a third polarization component, each of which comprises a first polarizer, a Faraday plate, a second polarizer and a wave plate, the first polarizer, the Faraday plate, the second polarizer and the wave plate are sequentially away from the laser component, a first wavelength optical signal sequentially passes through the first polarizer, the Faraday plate, the second polarizer and the wave plate of the first polarization component to emit horizontal polarized light, a third wavelength optical signal sequentially passes through the first polarizer, the Faraday plate, the second polarizer and the wave plate of the third polarization component to emit first vertical polarized light, and a second wavelength optical signal sequentially passes through the first polarizer, the Faraday plate, the second polarizer and the wave plate of the second polarization component to emit second vertical polarized light;

[0008] A polarization combining component is used to combine multiple polarized light beams into one beam; the polarization combining component includes a first polarization combining component, a second polarization combining component and a third polarization combining component, the third polarization combining component is used to reflect the first vertical polarized light to the second polarization combining component, the second polarization combining component is used to transmit the first vertical polarized light to the first polarization combining component, and also reflect the second vertical polarized light to the first polarization combining component, the first polarization combining component is used to reflect the second vertical polarized light and the first vertical polarized light, and also transmit the horizontal polarized light to achieve beam combining.

[0009] An optical module, comprising:

[0010] Circuit boards;

[0011] The light emitting component is electrically connected to the circuit board and includes:

[0012] A laser assembly, configured to emit a first wavelength optical signal, a second wavelength optical signal, and a third wavelength optical signal;

[0013] A polarization component, used for adjusting the polarization direction of an optical signal; the polarization component comprises a first polarization component, a second polarization component and a third polarization component, each of which comprises a first polarizer, a Faraday plate, a second polarizer and a wave plate, the first polarizer, the Faraday plate, the second polarizer and the wave plate are sequentially away from the laser component, a first wavelength optical signal sequentially passes through the first polarizer, the Faraday plate, the second polarizer and the wave plate of the first polarization component to emit horizontal polarized light, a third wavelength optical signal sequentially passes through the first polarizer, the Faraday plate, the second polarizer and the wave plate of the third polarization component to emit first vertical polarized light, and a second wavelength optical signal sequentially passes through the first polarizer, the Faraday plate, the second polarizer and the wave plate of the second polarization component to emit second vertical polarized light;

[0014] A polarization combining component, used for combining multiple polarized light beams into one beam; the polarization combining component comprises a first polarization combining component, a second polarization combining component and a third polarization combining component, the third polarization combining component is used for reflecting the first vertical polarized light to the second polarization combining component, the second polarization combining component is used for transmitting the first vertical polarized light to the first polarization combining component, and also reflecting the second vertical polarized light to the first polarization combining component, the first polarization combining component is used for reflecting the second vertical polarized light and the first vertical polarized light, and also transmitting the horizontal polarized light, so as to achieve beam combining;

[0015] The optical receiving component is electrically connected to the circuit board and is used for receiving the fourth wavelength optical signal, the fifth wavelength optical signal and the sixth wavelength optical signal.

[0016] Beneficial effects: The present application provides an optical module, including an optical emitting component, the optical emitting component including a laser component, a polarization component and a polarization combining component, the laser component emits optical signals of multiple wavelengths, the polarization component adjusts the polarization direction of the optical signal, and the polarization combining component combines multiple beams of polarized light into one beam. The laser component includes a first laser component, a second laser component and a third laser component, the first laser component emits an optical signal of a first wavelength, the second laser component emits an optical signal of a second wavelength, and the third laser component emits an optical signal of a third wavelength. The polarization component includes a first polarization component, a second polarization component and a third polarization component, the first polarization component adjusts the polarization direction of the optical signal of the first wavelength so that the first polarization component emits horizontally polarized light; the second polarization component adjusts the polarization direction of the optical signal of the second wavelength so that the second polarization component emits a second vertically polarized light; the third polarization component adjusts the polarization direction of the optical signal of the third wavelength so that the third polarization component emits a first vertically polarized light. The polarization combining component includes a first polarization combining component, a second polarization combining component and a third polarization combining component. The third polarization combining component reflects the first vertical polarized light to the second polarization combining component. The second polarization combining component transmits the first vertical polarized light to the first polarization combining component and also reflects the second vertical polarized light to the first polarization combining component. The third polarization combining component reflects both the second vertical polarized light and the first vertical polarized light and also transmits the horizontal polarized light to achieve beam combining. However, since the optical signal after beam combining by the polarization combining component includes a vertical polarization state and a horizontal polarization state, if a structural component for reverse isolation is provided after the polarization combining component, at least two isolators need to be provided after the polarization combining component to achieve reverse isolation. Therefore, an isolator can be provided before the polarization combining component. Since the isolator includes a first polarizer, a Faraday plate and a second polarizer, an isolator is provided before the polarization combining component, and the optical signal emits non-horizontally polarized light and non-vertically polarized light after passing through the isolator. In order to make the optical signal emit horizontally polarized light or vertically polarized light after passing through the polarization component, a wave plate needs to be added after the second polarizer. After the non-horizontally polarized light passes through the wave plate, it emits horizontally polarized light, and after the non-vertically polarized light passes through the wave plate, it emits horizontally polarized light or vertically polarized light. The first polarization component, the second polarization component, and the third polarization component all include a first polarizer, a faraday plate, a second polarizer, and a wave plate. The first polarizer, the faraday plate, the second polarizer, and the wave plate are sequentially away from the laser component. The first wavelength optical signal sequentially passes through the first polarizer, the faraday plate, the second polarizer, and the wave plate of the first polarization component to emit horizontally polarized light. The third wavelength optical signal sequentially passes through the first polarizer, the faraday plate, the second polarizer, and the wave plate of the third polarization component to emit the first vertical polarized light. The second wavelength optical signal sequentially passes through the first polarizer, the faraday plate, the second polarizer, and the wave plate of the second polarization component to emit the second vertical polarized light. In the present application, the polarization direction of the optical signal is adjusted by the polarization component, and then the multiple polarized lights are combined into one beam by the polarization combining component, so that the optical emitting component can realize wave combining. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 is a partial structural diagram of an optical communication system provided according to some embodiments;

[0019] Figure 2 A partial structural diagram of a host computer provided according to some embodiments;

[0020] Figure 3 A structural diagram of an optical module provided according to some embodiments;

[0021] Figure 4 is an exploded view of an optical module provided according to some embodiments;

[0022] Figure 5 An exploded view of an optical transceiver component and a circuit board according to some embodiments;

[0023] Figure 6 An exploded view of an optical transceiver component provided according to some embodiments;

[0024] Figure 7 A structural diagram of an optical fiber adapter and a transceiver cavity provided according to some embodiments;

[0025] Figure 8 An exploded view of an optical fiber adapter and a transceiver cavity provided according to some embodiments;

[0026] Fig. 9 A cross-sectional view of an optical fiber adapter and a transceiver cavity provided according to some embodiments;

[0027] Fig.10 is an exploded view of a transceiver cavity provided according to some embodiments;

[0028] Fig.11 A structural diagram of a transceiver housing provided according to some embodiments;

[0029] Fig.12 is a light path diagram of a second optical component provided according to some embodiments;

[0030] Fig.13 is an exploded view of a light emitting component provided according to some embodiments;

[0031] Fig.14An exploded view of a first optical assembly and a transmitting housing according to some embodiments;

[0032] Fig.15 A structural diagram of a launch housing provided according to some embodiments;

[0033] Fig.16 A light path diagram of a first optical component provided according to some embodiments;

[0034] Fig.17 Another optical path diagram of a first optical component provided according to some embodiments;

[0035] Fig.18 A combined optical path diagram of a first optical component and a second optical component provided according to some embodiments;

[0036] Fig.19 A schematic diagram of the optical axis of a wave plate, the polarization direction of an incident light signal, and the polarization direction of an outgoing light signal provided according to some embodiments;

[0037] Fig. 20 An exploded view of a supporting member, a second polarization combining member, and a third polarization combining member provided according to some embodiments;

[0038] Fig.21 A structural diagram of a supporting member provided according to some embodiments;

[0039] Fig. 22 is a structural diagram of a supporting member provided in accordance with some embodiments at another viewing angle;

[0040] Fig.23 is a cross-sectional view of a supporting member provided according to some embodiments. DETAILED DESCRIPTION

[0041] Some embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. However, the described embodiments are only a part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present disclosure.

[0042] Unless the context requires otherwise, throughout the specification and claims, the term "comprising" is to be interpreted as having an open, inclusive meaning, that is, "including, but not limited to"; the terms "first" and "second" are not to be understood as indicating or implying relative importance or indicating an upper limit on quantity; the term "plurality" means two or more; the term "connected" is to be understood in a broad sense, for example, "connected" can be a fixed connection, a detachable connection, or an integral connection, and can be directly connected or indirectly connected through an intermediate medium; the use of the terms "suitable for" or "configured to" implies open and inclusive language, which does not exclude devices that are suitable for or configured to perform additional tasks or steps; descriptions such as "parallel", "perpendicular", "same", "consistent", and "flush" are not limited to absolute mathematical theoretical relationships, but also include an acceptable error range generated in practice, and also include differences based on the same design concept but due to manufacturing reasons.

[0043] In optical communication technology, in order to establish information transmission between information processing devices, it is necessary to load information onto light and use the propagation of light to achieve information transmission. Here, the light loaded with information is an optical signal. When optical signals are transmitted in information transmission equipment, the loss of optical power can be reduced, so high-speed, long-distance, and low-cost information transmission can be achieved. The signals that information processing equipment can recognize and process are electrical signals. Information processing equipment usually includes optical network terminals (Optical Network Unit, ONU), gateways, routers, switches, mobile phones, computers, servers, tablets, televisions, etc., and information transmission equipment usually includes optical fibers and optical waveguides.

[0044] The optical module can realize the mutual conversion between optical signals and electrical signals between information processing equipment and information transmission equipment. For example, at least one of the optical signal input end or the optical signal output end of the optical module is connected to an optical fiber, and at least one of the electrical signal input end or the electrical signal output end of the optical module is connected to an optical network terminal; the first optical signal from the optical fiber is transmitted to the optical module, and the optical module converts the first optical signal into a first electrical signal, and transmits the first electrical signal to the optical network terminal; the second electrical signal from the optical network terminal is transmitted to the optical module, and the optical module converts the second electrical signal into a second optical signal, and transmits the second optical signal to the optical fiber. Since multiple information processing devices can transmit information through electrical signals, at least one of the multiple information processing devices needs to be directly connected to the optical module, and all information processing devices do not need to be directly connected to the optical module. Here, the information processing device directly connected to the optical module is called the upper computer of the optical module. In addition, the optical signal input end or the optical signal output end of the optical module can be called an optical port, and the electrical signal input end or the electrical signal output end of the optical module can be called an electrical port.

[0045] Figure 1 FIG. 1 is a partial structural diagram of an optical communication system provided 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 .

[0046] One end of the optical fiber 101 extends toward the remote information processing device 1000, and the other end of the optical fiber 101 is connected to the optical module 200 through the optical port of the optical module 200. The optical signal can be totally reflected in the optical fiber 101, and the propagation of the optical signal in the total reflection direction can almost maintain the original optical power. The optical signal undergoes multiple total reflections in the optical fiber 101 to transmit the optical signal from the remote information processing device 1000 to the optical module 200, or to transmit the optical signal from the optical module 200 to the remote information processing device 1000, thereby realizing long-distance, low-power loss information transmission.

[0047] The optical communication system may include one or more optical fibers 101, and the optical fibers 101 are detachably connected 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 working state of the optical module 200.

[0048] The host computer 100 includes a substantially rectangular housing and an optical module interface 102 disposed on the housing. The optical module interface 102 is configured to connect to the optical module 200 so that the host computer 100 and the optical module 200 establish a unidirectional or bidirectional electrical signal connection.

[0049] The host computer 100 also includes an external electrical interface, which can be connected to an electrical signal network. For example, the external electrical interface includes a Universal Serial Bus (USB) interface or a network cable interface 104, and the network cable interface 104 is configured to access the network cable 103 so that the host computer 100 establishes a unidirectional or bidirectional electrical signal connection with the network cable 103. One end of the network cable 103 is connected to the local information processing device 2000, and the other end of the network cable 103 is connected to the host computer 100, 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, the third electrical signal sent by the local information processing device 2000 is transmitted to the host computer 100 through the network cable 103, and the host computer 100 generates a second electrical signal according to the third electrical signal. The second electrical signal from the host computer 100 is transmitted to the optical module 200, and the optical module 200 converts the second electrical signal into a second optical signal, and transmits the second optical signal to the optical fiber 101, and the second optical signal is transmitted to the remote information processing device 1000 in the optical fiber 101. For example, the first optical signal from the remote information processing device 1000 is transmitted through the optical fiber 101, and the first optical signal from the optical fiber 101 is transmitted to the optical module 200, and the optical module 200 converts the first optical signal into a first electrical signal, and the optical module 200 transmits the first electrical signal to the host computer 100, and the host computer 100 generates a fourth electrical signal according to the first electrical signal, and transmits the fourth electrical signal to the local information processing device 2000. It should be noted that the optical module is a tool for realizing the mutual conversion between optical signals and electrical signals. During the conversion process between the optical signals and electrical signals, the information does not change, but the encoding and decoding methods of the information can change.

[0050] In addition to the optical network terminal, the host computer 100 also includes an optical line terminal (OLT), an optical network device (ONT), or a data center server.

[0051] Figure 2 FIG. 1 is a partial structural diagram of a host computer according to some embodiments. In order to clearly show the connection relationship between the optical module 200 and the host computer 100, Figure 2 Only the structure of the host computer 100 related to the optical module 200 is shown. Figure 2 As shown, the host computer 100 further includes a PCB circuit board 105 disposed in 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 access the electrical port of the optical module 200; the heat sink 107 has a protruding structure such as fins to increase the heat dissipation area.

[0052] The optical module 200 is inserted into the cage 106 of the host computer 100, and the cage 106 fixes the optical module 200. The heat generated by the optical module 200 is transferred to the cage 106 and then diffused through the heat sink 107. After the optical module 200 is inserted into the cage 106, the electrical port of the optical module 200 is connected to the electrical connector inside the cage 106, so that the optical module 200 establishes a bidirectional electrical signal connection with the host computer 100. In addition, the optical port of the optical module 200 is connected to the optical fiber 101, so that the optical module 200 establishes a bidirectional optical signal connection with the optical fiber 101.

[0053] Figure 3 is a structural diagram of an optical module provided according to some embodiments, Figure 4 FIG. 1 is an exploded view of an optical module provided according to some embodiments. Figure 3 and Figure 4 As shown, the optical module 200 includes a shell, a circuit board 300 disposed in the shell, a light emitting component 400 and a light receiving component 500. However, the present 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.

[0054] The housing comprises an upper housing 201 and a lower housing 202 . The upper housing 201 covers the lower housing 202 to form the housing having two openings 204 and 205 . The outer contour of the housing is generally a square body.

[0055] In some embodiments, the lower shell 202 includes a bottom plate 2021 and two lower side plates 2022 located on both sides of the bottom plate 2021 and arranged perpendicular to the bottom plate 2021; the upper shell 201 includes a cover plate 2011, and the cover plate 2011 covers the two lower side plates 2022 of the lower shell 202 to form the above-mentioned shell.

[0056] In some embodiments, the lower shell 202 includes a bottom plate 2021 and two lower side plates 2022 located on both sides of the bottom plate 2021 and vertically arranged with the bottom plate 2021; the upper shell 201 includes a cover plate 2011 and two upper side plates located on both sides of the cover plate 2011 and vertically arranged with the cover plate 2011, and the two upper side plates are combined with the two lower side plates 2022 to realize that the upper shell 201 covers the lower shell 202.

[0057] The direction of the line connecting the two openings 204 and 205 may be consistent with the length direction of the optical module 200, or may be inconsistent with the length direction of the optical module 200. For example, the opening 204 is located at the end of the optical module 200 ( Figure 3 The opening 205 is also located at the end of the optical module 200 ( Figure 3Alternatively, the opening 204 is located at the end of the optical module 200, and the opening 205 is located at the side of the optical module 200. The opening 204 is an electrical port, and the gold finger of the circuit board 300 extends from the electrical port and is inserted into the electrical connector of the host computer 100; the opening 205 is an optical port, which is configured to access the 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.

[0058] The upper housing 201 and the lower housing 202 are combined to facilitate the installation of the circuit board 300, the light emitting component 400, the light receiving component 500, etc. into the above housing, and the upper housing 201 and the lower housing 202 can encapsulate and protect the above components. In addition, when assembling the circuit board 300, the light emitting component 400, the light receiving component 500, etc., it is convenient to deploy the positioning components, heat dissipation components, and electromagnetic shielding components of these components, which is conducive to the automated production.

[0059] In some embodiments, the upper shell 201 and the lower shell 202 are made of metal materials to facilitate electromagnetic shielding and heat dissipation.

[0060] In some embodiments, the optical module 200 further includes an unlocking component 600 located outside its housing. The unlocking component 600 is configured to achieve 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.

[0061] 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 snap-fit ​​component that matches the cage 106 of the host computer 100. When the optical module 200 is inserted into the cage 106, the snap-fit ​​component of the unlocking component 600 fixes the optical module 200 in the cage 106; when the unlocking component 600 is pulled, the snap-fit ​​component of the unlocking component 600 moves accordingly, thereby changing the connection relationship between the snap-fit ​​component and the host computer, so as to release the fixation of the optical module 200 and the host computer, so that the optical module 200 can be pulled out of the cage 106.

[0062] The circuit board 300 includes circuit traces, electronic components and chips, etc. The electronic components and chips are connected according to the circuit design through the circuit traces to realize the functions of power supply, electrical signal transmission and grounding. The electronic components may include capacitors, resistors, transistors, metal-oxide-semiconductor field-effect transistors (Metal-Oxide-Semiconductor Field-Effect Transistor, MOSFET), etc. The chips may include microcontroller units (Microcontroller Unit, MCU), laser driver chips, transimpedance amplifiers (Transimpedance Amplifier, TIA), limiting amplifiers (Limiting Amplifier, LIA), clock and data recovery chips (Clock and Data Recovery, CDR), power management chips, and digital signal processing (Digital Signal Processing, DSP) chips.

[0063] The circuit board 300 is generally a rigid circuit board. Due to its relatively hard material, the rigid circuit board can also realize the load-bearing function. For example, the rigid circuit board can stably carry the above-mentioned electronic components and chips; the rigid circuit board can also be inserted into the electrical connector in the cage 106 of the host computer 100.

[0064] The circuit board 300 also includes a gold finger formed on the end surface thereof, and the gold finger is composed of a plurality of independent pins. The circuit board 300 is inserted into the cage 106, and the gold finger is connected to the electrical connector in the cage 106. The gold finger can be provided on the surface of only one side of the circuit board 300 (for example, Figure 4 The upper surface shown in the figure) can also be set on the upper and lower surfaces of the circuit board 300 to provide a larger number of pins, so as to adapt to occasions where the number of pins is large. The gold finger is 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, data signal transmission, etc. Of course, flexible circuit boards are also used in some optical modules. Flexible circuit boards are generally used in conjunction with rigid circuit boards to supplement rigid circuit boards.

[0065] At least one of the light emitting component 400 or the light receiving component 500 is located on a side of the circuit board 300 away from the gold finger.

[0066] 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.

[0067] In some embodiments, at least one of the light emitting component or the light receiving component may be directly disposed on the circuit board 300. For example, at least one of the light emitting component or the light receiving component may be disposed on a surface of the circuit board 300 or a side of the circuit board 300.

[0068] The optical transmitting component and the optical receiving component constitute an optical transceiver component, and the optical transceiver component is electrically connected to the circuit board 300. The optical transmitting component is the transmitting end of the optical transceiver component, and the optical receiving component is the receiving end of the optical transceiver component. Both the transmitting end of the optical transceiver component and the receiving end of the optical transceiver component are electrically connected to the circuit board 300.

[0069] Figure 5 FIG. 1 is an exploded view of an optical transceiver component and a circuit board according to some embodiments. Figure 5 As shown, in some embodiments, the circuit board 300 includes a first circuit board 301 and a second circuit board 302, the first circuit board 301 is a hard circuit board, the second circuit board 302 is a flexible circuit board, and the light emitting component 400 and the light receiving component 500 are both electrically connected to the first circuit board 301 through the second circuit board 302.

[0070] One end of the optical receiving component 500 is connected to the optical fiber adapter 700, and the other end of the optical receiving component 500 is connected to the optical transmitting component 400. The optical signal generated by the optical transmitting component 400 is first transmitted to the optical receiving component 500, then transmitted to the optical fiber adapter 700 through the optical receiving component 500, and finally output through the optical fiber adapter 700; the external input optical signal is input to the optical receiving component 500 through the optical fiber adapter 700, so that the optical receiving component 500 and the optical transmitting component 400 share the optical fiber adapter 700, and then the uplink optical signal and the downlink optical signal of the optical module share the optical fiber 101.

[0071] In some embodiments, the optical emitting component 400 can generate optical signals of multiple wavelengths, and the optical signals of multiple wavelengths are combined into one optical signal, and the optical receiving component 500 can receive optical signals including multiple wavelengths. Exemplarily, the optical emitting component 400 generates optical signals of three wavelengths, and the optical receiving component 500 receives optical signals of three wavelengths.

[0072] Figure 6 FIG. 1 is an exploded view of an optical transceiver component provided according to some embodiments. Figure 6 As shown, the optical receiving component 500 includes a transceiver cavity 510 and a plurality of optical receiving components, and the plurality of optical receiving components are connected to the transceiver cavity 510. For example, the plurality of optical receiving components include a first optical receiving component 520, a second optical receiving component 530 and a third optical receiving component 540.

[0073] In some embodiments, the optical emitting component 400 adopts a micro-optical package, and the first optical receiving component 520, the second optical receiving component 530, and the third optical receiving component 540 adopt a coaxial package. Exemplarily, the receiving optical axes of the first optical receiving component 520, the second optical receiving component 530, and the third optical receiving component 540 are parallel to each other. That is, the first optical receiving component 520, the second optical receiving component 530, and the third optical receiving component 540 each include a receiving tube cap and a receiving tube seat, and the receiving tube cap is covered on the receiving tube seat to form a receiving cavity, and a light receiving chip is arranged in the receiving cavity, and the light receiving chip receives the optical signal and converts the optical signal into an electrical signal.

[0074] The receiving socket is also provided with a receiving pin, one end of which is connected to the first circuit board 301 through the second circuit board 302 to realize electrical connection between the receiving pin and the first circuit board 301. The receiving pin extends upward from the bottom of the receiving socket until it goes beyond the top of the receiving socket, and is wired to the pad where the optical receiving chip is located to realize electrical connection between the receiving pin and the optical receiving chip, thereby transmitting the electrical signal to the first circuit board 301 through the receiving pin.

[0075] In some embodiments, the optical module 200 is used to receive a beam of optical signals including three wavelength ranges and to transmit a beam of optical signals including three wavelength ranges. Exemplarily, the optical emitting component 400 is used to output a beam of optical signals including a first wavelength, a second wavelength and a third wavelength, the first optical receiving component 520 is used to receive an optical signal of a fourth wavelength, the second optical receiving component 530 is used to receive an optical signal of a fifth wavelength, and the third optical receiving component 540 is used to receive an optical signal of a sixth wavelength.

[0076] In some embodiments, the first side of the transceiver cavity 510 is connected to the optical fiber adapter 700, the second side of the transceiver cavity 510 is provided with the first light receiving assembly 520, the second light receiving assembly 530 and the third light receiving assembly 540, and the third side of the transceiver cavity 510 is provided with the light emitting component 400. Exemplarily, the first side of the transceiver cavity 510 is close to the optical port of the optical module, the second side of the transceiver cavity 510 is close to the lower side plate 2022 of the lower housing 202, and the third side of the transceiver cavity 510 is close to the electrical port of the optical module.

[0077] In some embodiments, a first connection hole is provided on the first side of the transceiver cavity 510, a second connection hole, a third connection hole and a fourth connection hole are provided on the second side of the transceiver cavity 510, and a fifth connection hole is provided on the third side of the transceiver cavity 510. The first connection hole, the second connection hole, the third connection hole, the fourth connection hole and the fifth connection hole are connected to the inner cavity of the transceiver cavity 510 respectively. The other end of the optical fiber adapter 700 is connected to the first connection hole; the first light receiving component 520 is connected to the second connection hole, the second light receiving component 530 is connected to the third connection hole, the third light receiving component 540 is connected to the fourth connection hole, and the light emitting component 400 is connected to the fifth connection hole. Exemplarily, the second connection hole, the third connection hole and the fourth connection hole are arranged in sequence on the second side of the transceiver cavity 510.

[0078] Figure 7 The figure is a structural diagram of a fiber optic adapter and a transceiver cavity provided according to some embodiments. Figure 8 The figure is an exploded view of a fiber optic adapter and a transceiver cavity according to some embodiments. Fig. 9 FIG. 1 is a cross-sectional view of an optical fiber adapter and a transceiver cavity according to some embodiments. Figure 7 , Figure 8 and Fig. 9 As shown, in some embodiments, a fiber optic adapter 700 is disposed on the first side of the transceiver cavity 510, one end of the fiber optic adapter 700 is used to connect the optical fiber, and the other end of the fiber optic adapter 700 is connected to the transceiver cavity 510, so that the transceiver cavity 510 is optically connected to the optical fiber through the fiber optic adapter 700. Exemplarily, a first connection hole 5111 is disposed on one side of the transceiver cavity 510, and a connecting sleeve 710 is disposed on the other end of the fiber optic adapter 700. The fiber optic adapter 700 is embedded in one end of the connecting sleeve 710, and the other end of the connecting sleeve 710 is connected to the transceiver cavity 510, so that the fiber optic adapter 700 is connected to the first connection hole 5111, and the fiber optic adapter 700 is conveniently connected to the transceiver cavity 510 through the connecting sleeve 710. Exemplarily, the other end of the fiber optic adapter 700 is embedded in the connecting sleeve 710, and the end of the optical fiber ferrule in the fiber optic adapter 700 is located in the connecting sleeve 710.

[0079] In some embodiments, the first connection hole 5111 extends from the inside of the transceiver cavity 510 to the outside of the transceiver cavity 510, that is, the first connection hole 5111 is a through hole that crosses the first side panel of the transceiver cavity 510, so as to facilitate the transmission of optical signals back and forth between the transceiver cavity 510 and the optical fiber adapter 700 outside the transceiver cavity 510.

[0080] In some embodiments, a fourth lens 5174 is disposed in the first connection hole 5111, and the fourth lens 5174 is used to collimate / converge the optical signal. Exemplarily, the optical signal transmitted from the transceiver cavity 510 to the optical fiber adapter 700 is converged by the fourth lens 5174, and the optical signal transmitted from the optical fiber adapter 700 to the transceiver cavity 510 is collimated by the fourth lens 5174. The fourth lens 5174 is disposed in the first connection hole 5111, which is convenient for saving the space occupied by disposing the fourth lens 5174 in the transceiver cavity 510, which helps to reduce the volume of the optical receiving component 500, and facilitates the assembly of the optical receiving component 500 in the optical module.

[0081] In some embodiments, the second side of the transceiver cavity 510 is provided with a second connection hole 5121, a third connection hole 5122, and a fourth connection hole 5123, the top of the first light receiving assembly 520 is embedded with the second connection hole 5121, the top of the second light receiving assembly 530 is embedded with the third connection hole 5122, and the top of the third light receiving assembly 540 is embedded with the fourth connection hole 5123, so that the first light receiving assembly 520, the second light receiving assembly 530, and the third light receiving assembly 540 are isolated from each other by separating the second connection hole 5121, the third connection hole 5122, and the fourth connection hole 5123, and the high-frequency crosstalk, thermal crosstalk, etc. between the first light receiving assembly 520, the second light receiving assembly 530, and the third light receiving assembly 540 are effectively reduced. Exemplarily, the receiving tube caps of the first light receiving assembly 520, the second light receiving assembly 530, and the third light receiving assembly 540 are respectively embedded with corresponding connection holes.

[0082] In some embodiments, a fifth connecting hole 5131 is provided on the third side of the transceiver cavity 510, one end of the fifth connecting hole 5131 is connected to the inner cavity of the transceiver cavity 510, the other end of the fifth connecting hole 5131 is connected to one end of the connecting part 5132, the other end of the connecting part 5132 is connected to the light emitting component 400, and a fourth through hole 51321 is provided inside the connecting part 5132, the fourth through hole 51321 is connected to the fifth connecting hole 5131, so that the optical signal emitted by the light emitting component 400 can be incident on the interior of the transceiver cavity 510.

[0083] Fig.10 An exploded view of a transceiver cavity provided according to some embodiments. Fig.11 FIG. 1 is a structural diagram of a transceiver housing according to some embodiments. Fig.10 and Fig.11 As shown, in some embodiments, the transceiver cavity 510 includes a transceiver cover 515 and a transceiver housing, and the transceiver cover 515 covers the transceiver housing to form the transceiver cavity 510. A second optical component 517 is disposed in the transceiver cavity 510 to transmit optical signals to the optical fiber adapter 700 and receive optical signals transmitted by the optical fiber adapter 700.

[0084] In some embodiments, the transceiver housing is recessed inward to form a receiving cavity 516 , and the second optical component 517 is disposed in the receiving cavity 516 to accommodate the second optical component 517 .

[0085] In some embodiments, the transceiver housing has an opening. For example, the transceiver housing includes a first transceiver side plate 511, a second transceiver side plate 512, a third transceiver side plate 513 and a fourth transceiver side plate 514, the first transceiver side plate 511, the second transceiver side plate 512, the third transceiver side plate 513 and the fourth transceiver side plate 514 are connected end to end in sequence, and the first transceiver side plate 511, the second transceiver side plate 512, the third transceiver side plate 513 and the fourth transceiver side plate 514 are located at the edge of the accommodating cavity 516; the first transceiver side plate 511 is located on the first side of the transceiver housing, the second transceiver side plate 512 is located on the second side of the transceiver housing, the third transceiver side plate 513 is located on the third side of the transceiver housing, and the fourth transceiver side plate 514 is located on the fourth side of the transceiver housing. Among them, the fourth side of the transceiver housing is close to the lower side plate 2022 of the lower housing 202 and is located on a different side of the transceiver housing from the second side of the transceiver housing. The first transceiver side plate 511 is provided with a first connection hole 5111, the second transceiver side plate 512 is provided with a second connection hole 5121, a third connection hole 5122 and a fourth connection hole 5123, and the third transceiver side plate 513 is provided with a fifth connection hole 5131. Exemplarily, the first transceiver side plate 511, the second transceiver side plate 512, the third transceiver side plate 513 and the fourth transceiver side plate 514 are integrally formed.

[0086] In some embodiments, the third transceiver side panel 513 includes a first sub-transceiver side panel 5133 and a second sub-transceiver side panel 5134, one end of the first sub-transceiver side panel 5133 is connected to the second transceiver side panel 512, the other end of the first sub-transceiver side panel 5133 is connected to one end of the second sub-transceiver side panel 5134, and the other end of the second sub-transceiver side panel 5134 is connected to the fourth transceiver side panel 514, so that the third transceiver side panel 513 has an avoidance notch to avoid the light emitting component 400.

[0087] In some embodiments, the second sub-transceiver side panel 5134 is provided with an avoidance gap 5135, which is formed by the inner wall of the second sub-transceiver side panel 5134 being recessed toward the outer wall of the second sub-transceiver side panel 5134, and the side wall of the avoidance gap 5135 includes one end of the fifth connecting hole 5131.

[0088] In some embodiments, the accommodating cavity 516 includes a first accommodating cavity, a second accommodating cavity 5165 and a third accommodating cavity 5166, and the first accommodating cavity, the second accommodating cavity 5165 and the third accommodating cavity 5166 are interconnected so that the optical signal can be transmitted from the first accommodating cavity to the second accommodating cavity 5165 and from the first accommodating cavity to the third accommodating cavity 5166.

[0089] In some embodiments, the first transceiver side panel 511 and the second transceiver side panel 512 form a second accommodating cavity 5165 , and the first sub-transceiver side panel 5133 and the second transceiver side panel 512 form a third accommodating cavity 5166 .

[0090] In some embodiments, the first accommodating cavity includes a accommodating cavity body 5163, a storage piece 5169, a second storage groove 5162 and a third storage groove 5164, the first connecting hole 5111 is located on the first side of the accommodating cavity body 5163, the third storage groove 5164 is located on the second side of the accommodating cavity body 5163, the storage piece 5169 is located on the third side of the accommodating cavity body 5163, the second storage groove 5162 is located on the fourth side of the accommodating cavity body 5163, the second storage groove 5162 and the third storage groove 5164 are more recessed relative to the accommodating cavity body 5163, and the storage piece 5169 is more protruding relative to the accommodating cavity body 5163.

[0091] The third storage groove 5164 is communicated with the accommodating cavity body 5163, the second accommodating cavity 5165 and the third accommodating cavity 5166 respectively, so that the first accommodating cavity, the second accommodating cavity 5165 and the third accommodating cavity 5166 are communicated with each other.

[0092] In some embodiments, the first end of the placement piece 5169 is connected to the accommodating cavity body 5163, and the second end of the placement piece 5169 is connected to the inner wall of the second sub-transceiver side panel 5134 of the third transceiver side panel 513. The placement piece 5169 is more recessed relative to the second sub-transceiver side panel 5134 to facilitate the mounting of optical components.

[0093] In some embodiments, a first storage groove 5161 is provided on the storage piece 5169. The first storage groove 5161 is located between the accommodating cavity body 5163 and the avoidance gap 5135. The first storage groove 5161 is recessed relative to the storage piece 5169 to facilitate the placement of the optical component.

[0094] In some embodiments, the first storage slot 5161 is located between the accommodating cavity body 5163 and the second sub-transceiver side plate 5134 of the third transceiver side plate 513, the first port of the first storage slot 5161 is connected to the fifth connecting hole 5131, and the second port of the first storage slot 5161 is located at the notch of the first supporting surface 5167, so that the second port of the first storage slot 5161 is connected to the accommodating cavity body 5163, so that the optical signal incident through the fifth connecting hole 5131 can be transmitted along the first storage slot 5161 to the accommodating cavity body 5163.

[0095] In some embodiments, the central axes of the first port of the first storage slot 5161 and the second port of the first storage slot 5161 do not overlap, that is, the first port of the first storage slot 5161 and the second port of the first storage slot 5161 do not overlap on the Y axis.

[0096] In some embodiments, the accommodating cavity body 5163 includes a first side wall and a second side wall, the first side wall of the accommodating cavity body 5163 is arranged opposite to the second side wall of the accommodating cavity body 5163, the second side wall of the accommodating cavity body 5163 is connected to the first end of the storage member 5169, and the second side wall of the accommodating cavity body 5163 includes a first supporting surface 5167, the first supporting surface 5167 is the connecting surface between the first storage groove 5161 and the accommodating cavity body 5163, and the first supporting surface 5167 is used to support part of the second optical component. For example, the first supporting surface 5167 is an inclined surface, and the first supporting surface 5167 is inclined along one end of the inner side wall of the third transceiver side plate 513 to the other end, that is, the central axis of the fifth connecting hole 5131 is not perpendicular to the first supporting surface 5167.

[0097] In some embodiments, the second side wall of the accommodating cavity body 5163 also includes a second supporting surface 5168, which is used to support a portion of the second optical component. The first supporting surface 5167 and the second supporting surface 5168 are connected, and the first supporting surface 5167 and the second supporting surface 5168 are arranged non-parallel to each other, so that the second supporting surface 5168 is arranged parallel to the inner wall of the second sub-transceiver side panel 5134.

[0098] Fig.12 FIG. 4 is a light path diagram of a second optical component provided according to some embodiments. Fig.12 As shown, in some embodiments, the second optical component 517 includes a first displacement prism 5171, a first filter 5172, a second displacement prism 5173, a fourth lens 5174, a first reflector 5175, a wave splitter 5176, a second filter 5177, a third displacement prism 5178 and a fourth displacement prism 5179, the fourth lens 5174 is located in the first connecting hole 5111, and the first displacement prism 5171, the first filter 5172, the second displacement prism 5173, the first reflector 5175, the wave splitter 5176, the second filter 5177, the third displacement prism 5178 and the fourth displacement prism 5179 are located in the accommodating cavity 516.

[0099] The first port of the first storage slot 5161 and the second port of the first storage slot 5161 do not overlap on the Y axis. In order to adjust the position of the optical signal on the Y axis so that the optical signal propagates from the first port of the first storage slot 5161 to the second port of the first storage slot 5161, in some embodiments, a first displacement prism 5171 is disposed in the first storage slot 5161. The optical signal enters the first displacement prism 5171 through the incident surface of the first displacement prism 5171, the optical signal is reflected from the first reflection surface of the first displacement prism 5171 to the second reflection surface of the first displacement prism 5171, the optical signal is reflected from the second reflection surface of the first displacement prism 5171 to the exit surface of the first displacement prism 5171, and the optical signal is emitted through the exit surface of the first displacement prism 5171.

[0100] In some embodiments, the first optical filter 5172 is disposed on the first supporting surface 5167, covering the second port of the first storage slot 5161, and the signal light output by the light emitting component 400 is transmitted to the first optical filter 5172; the first optical filter 5172 is used to transmit the optical signal output by the light emitting component 400 and transmit it to the second displacement prism 5173, and the first optical filter 5172 is also used to reflect the optical signal output from the second displacement prism 5173 to the first reflector 5175. Exemplarily, the first surface of the first optical filter 5172 faces the second displacement prism 5173, and the second surface of the first optical filter 5172 is against the first supporting surface 5167.

[0101] In some embodiments, the second displacement prism 5173 is used to adjust the position of the optical signal in the Y direction of the transceiver housing, so as to adapt to the requirements of the optical module for the assembly position of the optical fiber adapter 700, and to provide sufficient space for setting the first reflector 5175 and the first filter 5172. The optical signal enters the second displacement prism 5173 through the incident surface of the second displacement prism 5173, the optical signal is reflected from the first reflection surface of the second displacement prism 5173 to the second reflection surface of the second displacement prism 5173, the optical signal is reflected from the second reflection surface of the second displacement prism 5173 to the exit surface of the second displacement prism 5173, and the optical signal is emitted through the exit surface of the second displacement prism 5173.

[0102] For the transmitted light signal, the incident surface of the second displacement prism 5173 refers to the side of the second displacement prism 5173 facing the first filter 5172, and the exit surface of the second displacement prism 5173 refers to the side of the second displacement prism 5173 facing the fourth lens 5174. For the received light signal, the incident surface of the second displacement prism 5173 refers to the side of the second displacement prism 5173 facing the fourth lens 5174, and the exit surface of the second displacement prism 5173 refers to the side facing the first filter 5172.

[0103] In some embodiments, the second displacement prism 5173 is located at the edge of the first connection hole 5111, so that the optical signal passing through the first connection hole 5111 is transmitted to the second displacement prism 5173, and the optical signal output by the second displacement prism 5173 is transmitted to the first connection hole 5111. Exemplarily, the first side surface of the second displacement prism 5173 is against the first side wall of the accommodating cavity body 5163 (i.e., the inner side wall of the first transceiver side plate 511), or the first side surface of the second displacement prism 5173 is sealed and connected to the first connection hole 5111.

[0104] In some embodiments, the first side surface of the second displacement prism 5173 is perpendicular or approximately perpendicular to the central axis of the first connecting hole 5111, so that the optical signal incident on the first side surface of the second displacement prism 5173 through the first connecting hole 5111 is transmitted perpendicularly or approximately perpendicularly to the first side surface of the second displacement prism 5173, and the optical signal output from the first side surface of the second displacement prism 5173 can be transmitted to the first connecting hole 5111 along the central axis of the first connecting hole 5111.

[0105] In some embodiments, the first reflector 5175 is disposed in the second placement slot 5162, and the first reflector 5175 is used to reflect the optical signal reflected by the first filter 5172 to the wave splitter 5176. In order to facilitate the first reflector 5175 to reflect the optical signal to the wave splitter 5176, the first reflector 5175 is tiltedly disposed in the first accommodating cavity, that is, the reflection surface of the first reflector 5175 is not parallel to the second side surface of the second displacement prism 5173 and the angle is less than 90°.

[0106] In some embodiments, a side wall of the second storage slot 5162 is the inner side wall of the fourth transceiver side plate 514, the inner side wall of the fourth transceiver side plate 514 is mounted with a first support member 5141, the first side wall of the first support member 5141 is mounted parallel to the inner side wall of the fourth transceiver side plate 514, the second side wall of the first support member 5141 is perpendicular to the first side wall of the first support member 5141, the two ends of the third side wall of the first support member 5141 are respectively connected to the first side wall of the first support member 5141 and the second side wall of the first support member 5141, the third side wall of the first support member 5141 is an inclined surface, that is, one end of the third side wall of the first support member 5141 is close to the first side wall of the first support member 5141 relative to the other end of the third side wall of the first support member 5141. For example, the first reflector 5175 is mounted on the third side wall of the first support member 5141.

[0107] In some embodiments, the side of the wave splitter 5176 is against the second supporting surface 5168 , and the side of the wave splitter 5176 contacts the positioning notch 51681 , and the positioning notch 51681 facilitates the positioning and assembly of the wave splitter 5176 .

[0108] In some embodiments, the wave splitter 5176 is disposed at the bottom of the accommodating cavity body 5163, the light incident side of the wave splitter 5176 faces the first reflector 5175, and the light splitting output side of the wave splitter 5176 faces the second transceiver side plate 512; the wave splitter 5176 is used to split the optical signal reflected by the first reflector 5175 according to the wavelength. Exemplarily, the wave splitter 5176 splits a beam of optical signals including the fourth wavelength, the fifth wavelength, and the sixth wavelength into three beams according to the wavelength.

[0109] In some embodiments, the third displacement prism 5178 is disposed in the second accommodating cavity 5165, and the fourth wavelength optical signal output by the wave splitter 5176 is transmitted to the third displacement prism 5178; the fourth displacement prism 5179 is disposed in the third accommodating cavity 5166, and the sixth wavelength optical signal output by the wave splitter 5176 is transmitted to the fourth displacement prism 5179. The third displacement prism 5178 and the fourth displacement prism 5179 are used to adjust the position of the optical signal in the X direction of the transceiver housing, so that the optical signal after being split by the wave splitter 5176 can be transmitted to the corresponding first optical receiving component 520, the second optical receiving component 530 and the third optical receiving component 540.

[0110] In some embodiments, a plurality of second filters are disposed in the second accommodating cavity 5165 and the third accommodating cavity 5166, such as a second filter disposed at the output end of the third displacement prism 5178 and a second filter disposed at the output end of the fourth displacement prism 5179. The second filter is used for filtering the optical signal before it is input into the corresponding optical accommodating component, reducing the clutter in the optical signal of the corresponding wavelength, and ensuring the receiving quality of the optical signal. Exemplarily, a second filter 5177 is disposed in the third storage slot 5164 and the second filter 5177 is located at the end of the third connecting hole 5122, and the second filter 5177 is located at the light input front end of the second optical receiving component 530. The second filter 5177 is used to filter out clutter in the optical signal that is about to be incident on the second optical receiving component 530, and improve the quality of the optical signal incident on the second optical receiving component 530.

[0111] like Fig.12 As shown, the emission light signal output by the light emitting component 400 is first adjusted in position in the Y direction by the first displacement prism 5171 and then incident on the first filter 5172, then incident on the second displacement prism 5173 through the first filter 5172, then adjusted in position in the Y direction by the second displacement prism 5173 and incident on the fourth lens 5174, and finally converged by the fourth lens 5174.

[0112] A beam of received light signals including the fourth wavelength, the fifth wavelength and the sixth wavelength is firstly collimated by the fourth lens 5174 and then transmitted to the second displacement prism 5173, and then is adjusted in position in the Y direction by the second displacement prism 5173 and is incident on the first filter 5172, and then is reflected by the first filter 5172 and transmitted to the first reflector 5175, and then is reflected by the first reflector 5175 and transmitted to the splitter 5176, and finally the received light signal is split into a fourth wavelength light signal, a fifth wavelength light signal and a sixth wavelength light signal according to the wavelength of the light signal by the splitter 5176.

[0113] The optical signal is reflected from the first reflection surface of the second displacement prism 5173 to the second reflection surface of the second displacement prism 5173 , and then reflected from the second reflection surface of the second displacement prism 5173 to the exit surface of the second displacement prism 5173 , and then emitted from the exit surface of the second displacement prism 5173 .

[0114] The fourth wavelength optical signal is transmitted to the incident surface of the third displacement prism 5178, the optical signal is incident on the first reflection surface of the third displacement prism 5178 through the incident surface of the third displacement prism 5178, the optical signal is reflected from the first reflection surface of the third displacement prism 5178 to the second reflection surface of the third displacement prism 5178, the optical signal is reflected from the second reflection surface of the third displacement prism 5178 to the exit surface of the third displacement prism 5178, and the optical signal is emitted from the exit surface of the third displacement prism 5178 to the first optical receiving component 520. The fifth wavelength optical signal is transmitted to the second optical receiving component 530 through the second filter 5177. The sixth wavelength optical signal is transmitted to the incident surface of the fourth displacement prism 5179. The optical signal is incident on the first reflection surface of the fourth displacement prism 5179 through the incident surface of the fourth displacement prism 5179. The optical signal is reflected from the first reflection surface of the fourth displacement prism 5179 to the second reflection surface of the fourth displacement prism 5179. The optical signal is reflected from the second reflection surface of the fourth displacement prism 5179 to the exit surface of the fourth displacement prism 5179. The optical signal is emitted from the exit surface of the fourth displacement prism 5179 to the third optical receiving component 540.

[0115] The fourth wavelength optical signal is transmitted to the first optical receiving component 520, the fifth wavelength optical signal is transmitted to the second optical receiving component 530, and the sixth wavelength optical signal is transmitted to the third optical receiving component 540. Of course, in some embodiments, the optical signal transmitted to the first optical receiving component 520 is not limited to the fourth wavelength optical signal, and may also include optical signals of other wavelengths, but mainly the fourth wavelength optical signal; the optical signal transmitted to the second optical receiving component 530 is not limited to the fifth wavelength optical signal, and may also include optical signals of other wavelengths, but mainly the fifth wavelength optical signal; the optical signal transmitted to the third optical receiving component 540 is not limited to the sixth wavelength optical signal, and may also include optical signals of other wavelengths, but mainly the sixth wavelength optical signal.

[0116] In some embodiments, the wavelength of the fourth wavelength optical signal is smaller than the wavelength of the fifth wavelength optical signal, and the wavelength of the fifth wavelength optical signal is smaller than the wavelength of the sixth wavelength optical signal. Exemplarily, the wavelength range of the fourth wavelength optical signal received by the first optical receiving component 520 is 1260-1280nm, such as the wavelength of the fourth wavelength optical signal is 1270nm; the wavelength range of the fifth wavelength optical signal received by the second optical receiving component 530 is 1284-1288nm, such as the wavelength of the fifth wavelength optical signal is 1286nm; the wavelength range of the sixth wavelength optical signal received by the third optical receiving component 540 is 1290-1330nm, such as the wavelength of the sixth wavelength optical signal is 1310nm.

[0117] The first optical receiving component 520, the second optical receiving component 530 and the third optical receiving component 540 respectively include photodetectors, which are used to receive optical signals and convert them into electrical signals. In some embodiments, the receiving rate of the photodetector in the second optical receiving component 530 is greater than the receiving rate of the photodetector in the first optical receiving component 520, and the receiving rate of the photodetector in the second optical receiving component 530 is greater than the receiving rate of the photodetector in the third optical receiving component 540, so that the transmission optical path of the fifth wavelength optical signal with the highest transmission rate from the output of the splitter 5176 to the photodetector is relatively short and the optical path is simplest, so that the photodetector in the second optical receiving component 530 can receive the optical signal with high coupling efficiency. Exemplarily, the receiving rate of the photodetector in the first optical receiving component 520 is 10G, the receiving rate of the photodetector in the second optical receiving component 530 is 50G, and the receiving rate of the photodetector in the third optical receiving component 540 is 2.5G.

[0118] In some embodiments, one end of the light emitting component 400 is connected to the second sub-transceiver side panel 5134, and one side edge of the light emitting component 400 is close to the first sub-transceiver side panel 5133, so that the light emitting component 400 is located at the avoidance corner of the transceiver shell, thereby making the assembly of the light emitting component 400 and the light receiving component 500 more compact, effectively reducing the overall size of the light emitting component 400 and the light receiving component 500.

[0119] Fig.13 FIG. 1 is an exploded view of a light emitting component provided according to some embodiments. Fig.14 An exploded view of a second optical assembly and a transmitting housing according to some embodiments. Fig.15 FIG. 1 is a structural diagram of a launch housing provided according to some embodiments. Fig.13 , Fig.14 and Fig.15As shown, the optical emitting component 400 comprises an emitting cover plate 401 and an emitting shell 402, wherein the emitting cover plate 401 covers the emitting shell 402 to form an emitting cavity. A first optical component 403 is arranged in the emitting cavity, and the first optical component 403 is used to emit an optical signal.

[0120] In some embodiments, a third through hole 4211 is provided at the first end of the transmitting shell 402, and a light window is placed in the third through hole 4211, and the light window is used to transmit the transmitted light signal and seal the light hole. The light window is embedded in the third through hole 4211 to seal the third through hole 4211; the light window can be transparent glass. The light window is used to relatively seal the third through hole 4211, which can not only allow the transmitted light signal to pass through, but also seal the third through hole 4211 to ensure the sealing performance of the transmitting shell 402. In some embodiments, the light window can also be embedded in the fourth through hole 51321.

[0121] In some embodiments, the second end of the launch shell 402 is provided with a notch, and the notch runs through the second end of the launch shell 402. One end of the first circuit board 301 is embedded in the notch, that is, one end of the first circuit board 301 passes through the notch and extends into the inner cavity of the launch shell 402.

[0122] In some embodiments, a first optical component 403 is disposed in the inner cavity of the transmitting housing 402, and the first optical component 403 includes a laser component 431, and the laser component 431 is close to one end of the first circuit board 301 to facilitate the electrical connection of the laser component 431 to the first circuit board 301. The laser component 431 is used to transmit multiple optical signals of different wavelengths. Exemplarily, the laser component 431 is connected to the first circuit board 301 by wire bonding.

[0123] In some embodiments, a socket 4234 is provided at the second end of the launch shell 402, and the socket 4234 passes through the second end of the launch shell 402. The first end of the launch pin 405 is connected to the second circuit board 302, and the second end of the launch pin 405 passes through the socket 4234 and extends into the inner cavity of the launch shell 402.

[0124] In some embodiments, a first optical component 403 is disposed in the inner cavity of the transmitting housing 402, and the first optical component 403 includes a laser component 431, and the laser component 431 is close to one end of the transmitting pin 405 to facilitate the electrical connection of the laser component 431 to the transmitting pin 405. The laser component 431 is used to transmit multiple optical signals of different wavelengths. Exemplarily, the laser component 431 is connected to the transmitting pin 405 by wire bonding.

[0125] In some embodiments, the first optical component 403 further includes a lens component 432 , which is disposed on an optical path from the laser component 431 to the wave combiner component, and is used to collimate the optical signal generated by the laser component 431 and transmit it to the wave combiner component.

[0126] In some embodiments, the first optical component 403 further includes a wavelength combining component, which is used to combine multiple optical signals with different wavelengths emitted by the laser component 431 into one emission optical signal.

[0127] like Fig.13 , Fig.14 and Fig.15 As shown, in some embodiments, the second end of the transmitting housing 402 is provided with a plurality of jacks 4234, the plurality of jacks 4234 include a first jack and a second jack, the first jack is closer to the bottom of the transceiver housing 402, the first jack is used to insert the first transmitting pin, and the second jack is used to insert the second transmitting pin, so as to reduce the signal crosstalk between the first transmitting pin and the second transmitting pin. The first transmitting pin is a transmitting pin 405 related to the rate, and the second transmitting pin is a transmitting pin 405 not related to the rate.

[0128] like Fig.13 and Fig.14 As shown, in some embodiments, a first soldering pad 406 is further provided at the second end of the transmitting shell 402, one end of the first soldering pad 406 is welded to the first transmitting pin located on the first socket, and the other end of the first soldering pad 406 is wired to the soldering pad where the laser component 431 is located.

[0129] In some embodiments, the first optical component 403 is fixed in the emission cavity through the substrate 404, and the soldering pad where the laser component 431 is located is connected to the first soldering pad 406 by wire bonding, so that the soldering pad where the laser component 431 is located is flush with the height of the first soldering pad 406, thereby shortening the wire bonding length between the soldering pad where the laser component 431 is located and the first soldering pad 406.

[0130] In some embodiments, the launch housing 402 has an opening. For example, the launch housing 402 includes a first launch side plate 421, a second launch side plate 422, a third launch side plate 423, a fourth launch side plate 424 and a launch bottom plate 425, the first launch side plate 421, the second launch side plate 422, the third launch side plate 423 and the fourth launch side plate 424 are connected end to end, and the first launch side plate 421, the second launch side plate 422, the third launch side plate 423 and the fourth launch side plate 424 are all connected to the launch bottom plate 425 to enclose a launch cavity having an opening.

[0131] The first emitting side plate 421 has a third through hole 4211 .

[0132] The third launching side plate 423 includes a first sub-launching side plate 4231, a second sub-launching side plate 4232 and a third sub-launching side plate 4233. The first sub-launching side plate 4231 is connected to the launching base plate 425. The distances between the first sub-launching side plate 4231, the second sub-launching side plate 4232 and the third sub-launching side plate 4233 and the launching base plate 425 increase sequentially. The first sub-launching side plate 4231, the second sub-launching side plate 4232 and the third sub-launching side plate 4233 are connected sequentially to make the third launching side plate 423 present a stepped shape.

[0133] A first solder pad 406 is provided on a surface of the first sub-emitting side plate 4231 facing the opening of the emission housing 402. A first plug hole is provided on a surface of the second sub-emitting side plate 4232 facing the laser assembly 431, and the first plug hole penetrates the second sub-emitting side plate 4232, so that the first emission pin is inserted from the emission housing 402 into the emission housing 402. A second plug hole is provided on a surface of the third sub-emitting side plate 4233 facing the laser assembly 431, and the second plug hole penetrates the third sub-emitting side plate 4233, so that the second emission pin is inserted from the emission housing 402 into the emission housing 402.

[0134] The first jack passes through the second sub-transmitting side plate 4232, and the second jack passes through the third sub-transmitting side plate 4233. The second sub-transmitting side plate 4232 and the third sub-transmitting side plate 4233 are stepped so as to extend the distance between the first jack and the second jack in the length direction of the transmitting shell 402, thereby reducing the distance between the first jack and the second jack in the height direction of the transmitting shell 402, thereby reducing the signal crosstalk between the first transmitting pin inserted into the first jack and the second transmitting pin inserted into the second jack.

[0135] The fourth transmitting side panel 424 includes a fourth sub-emitting side panel 4241 and a fifth sub-emitting side panel 4242; one side surface of the fourth sub-emitting side panel 4241 is connected to the transmitting bottom panel 425, and the other side surface of the fourth sub-emitting side panel 4241 is connected to the fifth sub-emitting side panel 4242, so that the fourth transmitting side panel 424 is stepped; one end of the fourth sub-emitting side panel 4241 is connected to the first transmitting side panel 421, and the other end of the fourth sub-emitting side panel 4241 is connected to the first sub-emitting side panel 4231; one end of the fifth sub-emitting side panel 4242 is connected to the first transmitting side panel 421, and the other end of the fifth sub-emitting side panel 4242 is connected to the second sub-emitting side panel 4232 and the third sub-emitting side panel 4233.

[0136] One end of the fourth sub-emitting side plate 4241 is connected to the first emitting side plate 421 , and the fourth sub-emitting side plate 4241 is connected to the first sub-emitting side plate 4231 to reduce the storage space of the emitting cavity, thereby limiting the substrate 404 .

[0137] Fig.16A light path diagram of a first optical component provided according to some embodiments. Fig.17 Another optical path diagram of the first optical component provided according to some embodiments. Fig.18 FIG. 4 is a combined optical path diagram of a first optical component and a second optical component provided according to some embodiments. Fig.16 , Fig.17 and Fig.18 As shown, the laser assembly 431 includes a first laser assembly 4311, a second laser assembly 4312 and a third laser assembly 4313; the second laser assembly 4312 is located between the first laser assembly 4311 and the third laser assembly 4313, and the light emitting directions of the first laser assembly 4311, the second laser assembly 4312 and the third laser assembly 4313 are toward the wave combiner assembly. In some embodiments, the first laser assembly 4311 emits a first wavelength optical signal, the second laser assembly 4312 emits a second wavelength optical signal, and the third laser assembly 4313 emits a third wavelength optical signal, and the optical axes of the first wavelength optical signal, the second wavelength optical signal and the third wavelength optical signal are parallel to the length extension direction of the transmitting shell. Exemplarily, the wavelength range of the first wavelength optical signal is 1340-1344nm, such as the wavelength of the first wavelength optical signal is 1342nm; the wavelength range of the second wavelength optical signal is 1480-1500nm, such as the wavelength of the second wavelength optical signal is 1490nm; the wavelength range of the third wavelength optical signal is 1575-1580nm, such as the wavelength of the third wavelength optical signal is 1577nm.

[0138] In some embodiments, the transmission rate of the first laser assembly 4311 is greater than the transmission rate of the third laser assembly 4313, and the transmission rate of the third laser assembly 4313 is greater than the transmission rate of the second laser assembly 4312. Exemplarily, the transmission rate of the first laser assembly 4311 is 50G, the transmission rate of the second laser assembly 4312 is 2.5G, and the transmission rate of the third laser assembly 4313 is 10G.

[0139] In some embodiments, the light-emitting end faces of the first laser assembly 4311, the second laser assembly 4312 and the third laser assembly 4313 are not flush, that is, the light-emitting end faces of the first laser assembly 4311, the second laser assembly 4312 and the third laser assembly 4313 are located on different length surfaces of the emitting shell.

[0140] In some embodiments, the first laser assembly 4311, the second laser assembly 4312, and the third laser assembly 4313 are packaged in a chip on carrier (COC), which can also be called a chip on a ceramic substrate. Therefore, the side profiles of the first laser assembly 4311, the second laser assembly 4312, and the third laser assembly 4313 are relatively regular, such as the side profiles of the first laser assembly 4311, the second laser assembly 4312, and the third laser assembly 4313 are respectively rectangular.

[0141] In some embodiments, the lens assembly 432 includes a first lens 4321, a second lens 4322, and a third lens 4323. The first lens 4321 is disposed on the transmission optical path from the first laser assembly 4311 to the wave-combining assembly, the second lens 4322 is disposed on the transmission optical path from the second laser assembly 4312 to the wave-combining assembly, and the third lens 4323 is disposed on the transmission optical path from the third laser assembly 4313 to the wave-combining assembly. In some embodiments, the first lens 4321, the second lens 4322, and the third lens 4323 are disposed on the substrate 404. Of course, the embodiments of the present disclosure are not limited to the first lens 4321, the second lens 4322, and the third lens 4323 being disposed on the substrate 404.

[0142] In some embodiments, the wavelength combining component includes a wavelength division multiplexer, the inlet side of the wavelength division multiplexer faces the laser component, and the outlet side of the wavelength division multiplexer faces the third through hole 4211. The wavelength division multiplexer combines the optical signal of the first wavelength, the optical signal of the second wavelength, and the optical signal of the third wavelength emitted by the laser component 431 into one optical signal.

[0143] In some embodiments, the wavelength combining component includes a plurality of optical filters, and the plurality of optical filters cooperate with each other to combine the optical signal of the first wavelength, the optical signal of the second wavelength, and the optical signal of the third wavelength into one optical signal.

[0144] In some embodiments, the combining component includes a polarization component 433 and a polarization combining component 434. The polarization component 433 is used to adjust the polarization direction of the optical signal, and the polarization combining component 434 combines multiple polarized light beams into one beam. The polarization direction of the optical signal is adjusted by the polarization component, and then the multiple polarized light beams are combined into one beam by the polarization combining component, so that the optical emitting component realizes combining.

[0145] like Fig.16As shown, in some embodiments, the polarization component 433 includes a first polarization component 4331, a second polarization component 4332, and a third polarization component 4333. The first polarization component 4331 is located in the light-emitting direction of the first laser component 4311. The first polarization component 4331 is used to adjust the deflection direction of the first wavelength optical signal emitted by the first laser component 4311, so that the polarization direction of the first wavelength optical signal is horizontal, that is, horizontal polarized light. The second polarization component 4332 is located in the light-emitting direction of the second laser component 4312. The second polarization component 4332 is used to adjust the deflection direction of the second wavelength optical signal emitted by the second laser component 4312, so that the polarization direction of the second wavelength optical signal is vertical, that is, second vertical polarized light. The third polarization component 4333 is located in the light-emitting direction of the third laser component 4313. The third polarization component 4333 is used to adjust the deflection direction of the third wavelength optical signal emitted by the third laser component 4313, so that the polarization direction of the third wavelength optical signal is vertical, that is, first vertical polarized light.

[0146] like Fig.16 As shown, in some embodiments, the polarization combining component 434 includes a first polarization combining component 4341, a second polarization combining component 4342 and a third polarization combining component 4343. The first polarization combining component 4341 is located on the left side of the first polarization component 4331, and the first polarization combining component 4341 is located between the third through hole 4211 and the first polarization component 4331. The first polarization combining component 4341 is used to transmit the horizontal polarized light (horizontally polarized light) of the first wavelength optical signal, and is also used to reflect the vertical polarized light (second vertical polarized light) of the second wavelength optical signal and the vertical polarized light (first vertical polarized light) of the third wavelength optical signal, and then combine the three into one optical signal. The second polarization combiner 4342 is located on the left side of the second polarization component 4332, and is used to reflect the vertical polarization light (second vertical polarization light) of the second wavelength optical signal to the first polarization combiner 4341, and is also used to transmit the vertical polarization light (first vertical polarization light) of the third wavelength optical signal to the first polarization combiner 4341. The third polarization combiner 4343 is located on the left side of the third polarization component 4333, and is used to reflect the vertical polarization light (first vertical polarization light) of the third wavelength optical signal to the second polarization combiner 4342.

[0147] In some embodiments, the first polarization combining element 4341 is a polarization beam splitter, which can transmit horizontal polarized light and reflect vertical polarized light to achieve beam combining. For example, the first vertical polarized light and the second vertical polarized light are reflected by the polarization beam splitter, and the horizontal polarized light is transmitted by the polarization beam splitter to achieve beam combining.

[0148] In some embodiments, the second polarization combiner 4342 is a filter that can reflect the second wavelength optical signal and transmit the third wavelength optical signal to achieve beam combining. The second polarization combiner 4342 is tilted from the central axis of the second polarization component 4332. For example, the angle between the second polarization combiner 4342 and the central axis of the second polarization component 4332 is 45°.

[0149] In some embodiments, the third polarization combiner 4343 is a reflector that can reflect the third wavelength optical signal. The third polarization combiner 4343 is tilted from the central axis of the third polarization component 4333. For example, the angle between the central axis of the third polarization combiner 4343 and the central axis of the third polarization component 4333 is 45°.

[0150] The launch housing 402 is provided with Fig.16 As shown in the polarization component 433 and the polarization combining component 434, the third through hole 4211 of the transmitting shell 402 is coaxial with the third polarization combining component 4343, and the opening direction of the transmitting shell 402 is opposite to the opening of the transceiver shell, which is downward.

[0151] like Fig.17 As shown, in some embodiments, the first polarization component 4331 is used to adjust the deflection direction of the first wavelength optical signal emitted by the first laser assembly 4311, so that the polarization direction of the first wavelength optical signal is vertical, that is, the first vertical polarized light. The second polarization component 4332 is used to adjust the deflection direction of the second wavelength optical signal emitted by the second laser assembly 4312, so that the polarization direction of the second wavelength optical signal is vertical, that is, the second vertical polarized light. The third polarization component 4333 is used to adjust the deflection direction of the third wavelength optical signal emitted by the third laser assembly 4313, so that the polarization direction of the third wavelength optical signal is horizontal, that is, horizontally polarized light.

[0152] like Fig.17 As shown, in some embodiments, the third polarization combiner 4343 is located between the third through hole 4211 and the third polarization component 4333, the first polarization combiner 4341 is used to reflect the vertical polarization light (first polarization light) of the first wavelength optical signal to the second polarization combiner 4342, the second polarization combiner 4342 is used to reflect the vertical polarization light (second vertical polarization light) of the second wavelength optical signal to the third polarization combiner 4343, and is also used to transmit the vertical polarization light (first polarization light) of the first wavelength optical signal to the third polarization combiner 4343. The third polarization combiner 4343 is used to transmit the horizontal polarization light (horizontal polarization light) of the third wavelength optical signal, and also reflects the vertical polarization light (first polarization light) of the first wavelength optical signal and the vertical polarization light (second vertical polarization light) of the second wavelength optical signal to achieve beam combining.

[0153] In some embodiments, the first polarization combiner 4341 is a reflector that can reflect the first wavelength optical signal. The first polarization combiner 4341 is tilted from the central axis of the first polarization component 4331. For example, the angle between the first polarization combiner 4341 and the central axis of the first polarization component 4331 is 45°.

[0154] In some embodiments, the second polarization combiner 4342 is a filter that can reflect the second wavelength optical signal and transmit the first wavelength optical signal to achieve beam combining. The second polarization combiner 4342 is tilted from the central axis of the second polarization component 4332. For example, the angle between the second polarization combiner 4342 and the central axis of the second polarization component 4332 is 45°.

[0155] In some embodiments, the third polarization combining element 4343 is a polarization beam splitter, which can transmit horizontal polarized light and reflect vertical polarized light to achieve beam combining. For example, the first vertical polarized light and the second vertical polarized light are reflected by the polarization beam splitter, and the horizontal polarized light is transmitted by the polarization beam splitter to achieve beam combining.

[0156] The launch housing 402 is provided with Fig.17 As shown in the polarization component 433 and the polarization combining component 434, the third through hole 4211 of the transmitting shell 402 is coaxial with the third polarization combining component 4343, and the opening direction of the transmitting shell 402 is the same as the opening of the transceiver shell, which is downward.

[0157] like Fig.16As shown, the first wavelength optical signal emitted by the first laser component 4311 is transmitted to the first lens 4321, collimated by the first lens 4321 and transmitted to the first polarization component 4331, and the polarization direction of the first wavelength optical signal is adjusted by the first polarization component 4331 before being transmitted to the first polarization combiner 4341; the second wavelength optical signal emitted by the second laser component 4312 is transmitted to the second lens 4322, collimated by the second lens 4322 and transmitted to the second polarization component 4332, and the polarization direction of the second wavelength optical signal is adjusted by the second polarization component 4332 before being transmitted to the second polarization combiner 4342; the third wavelength optical signal emitted by the third laser component 4313 is transmitted to the third lens 4323, collimated by the third lens 4323 and transmitted to the third polarization component 4333, and the polarization direction of the third wavelength optical signal is adjusted by the third polarization component 4333 before being transmitted to the third polarization combiner 4343. The third polarization combiner 4343 reflects the vertical polarization light of the third wavelength optical signal to the second polarization combiner 4342, the second polarization combiner 4342 reflects the vertical polarization light of the second wavelength optical signal to the first polarization combiner 4341, and transmits the vertical polarization light of the third wavelength optical signal to the first polarization combiner 4341, the first polarization combiner 4341 transmits the horizontal polarization light of the first wavelength optical signal, and reflects the vertical polarization light of the second wavelength optical signal and the third wavelength optical signal, so that the horizontal polarization light of the first wavelength optical signal, the vertical polarization light of the second wavelength optical signal and the vertical polarization light of the third wavelength optical signal are combined into one optical signal.

[0158] like Fig.18 As shown, after the horizontally polarized light of the first wavelength optical signal, the vertically polarized light of the second wavelength optical signal and the third wavelength optical signal are combined into a beam of optical signals, the optical signal is first adjusted in position in the Y direction by the first displacement prism 5171 and then incident on the first filter 5172, then incident on the second displacement prism 5173 through the first filter 5172, then adjusted in position in the Y direction by the second displacement prism 5173 and incident on the fourth lens 5174, and finally converged by the fourth lens 5174.

[0159] Fig.19 FIG. 1 is a schematic diagram of the optical axis of a wave plate, the polarization direction of an incident light signal, and the polarization direction of an outgoing light signal according to some embodiments. Fig.19As shown, a is the polarization direction of the incident light signal, b is the optical axis of the first wave plate, and c is the polarization direction of the outgoing light signal. Figure A is a schematic diagram showing that the polarization direction of the outgoing light signal is horizontal after the incident light signal with a polarization direction of 45° passes through the wave plate, Figure B is a schematic diagram showing that the polarization direction of the outgoing light signal is horizontal after the incident light signal with a polarization direction of 135° passes through the wave plate, Figure C is a schematic diagram showing that the polarization direction of the outgoing light signal is vertical after the incident light signal with a polarization direction of 45° passes through the wave plate, and Figure C is a schematic diagram showing that the polarization direction of the outgoing light signal is vertical after the incident light signal with a polarization direction of 135° passes through the wave plate. Fig.19 As shown, in some embodiments, the wave plate is a half-wave plate, and the incident linear polarized light emits linear polarized light after passing through the half-wave plate. The characteristic of the half-wave plate is that the polarization direction of the incident light and the polarization direction of the outgoing light are symmetrical with respect to the optical axis of the half-wave plate.

[0160] The following is only Fig.16 The polarization component 433 and the polarization combining component 434 shown are used as examples to introduce the beam combining principle of the optical emitting component. Since the optical signal after the polarization combining component combines includes a vertical polarization state and a horizontal polarization state, if a structural component for reverse isolation is provided after the polarization combining component, at least two isolators need to be provided after the polarization combining component to achieve reverse isolation, so an isolator may be provided before the polarization combining component. Since the isolator includes a first polarizer, a Faraday plate, and a second polarizer, an isolator is provided before the polarization combining component, and the optical signal emits non-horizontally polarized light and non-vertically polarized light after passing through the isolator. In order to make the optical signal emit horizontally polarized light or vertically polarized light after passing through the polarization component, a wave plate needs to be added after the second polarizer. The non-horizontally polarized light emits horizontally polarized light after passing through the wave plate, and the non-vertically polarized light emits horizontally polarized light or vertically polarized light after passing through the wave plate. The reverse isolation principle of the isolator is as follows: the Faraday plate rotates in the same direction, and the 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 a reverse isolation effect.

[0161] In some embodiments, the first polarization component 4331, the second polarization component 4332 and the third polarization component 4333 all include a first polarizer, a Faraday plate, a second polarizer and a wave plate. The first polarizer, the Faraday plate, the second polarizer and the wave plate are successively away from the first laser component. The first wavelength light signal emitted by the first laser component passes through the first polarizer, the Faraday plate, the second polarizer and the wave plate in sequence and then is emitted. The angle between the optical axis of the wave plate and the horizontal plane is a preset angle, so that the light signal with the same polarization direction as the second polarizer is adjusted to horizontal polarized light or vertical polarized light after passing through the wave plate. For example, the angle between the optical axis of the wave plate of the first polarization component 4331 and the horizontal plane is a first preset angle, so that the light signal with the same polarization direction as the second polarizer is adjusted to horizontal polarized light after passing through the wave plate; the angle between the optical axis of the wave plate of the second polarization component 4332 and the horizontal plane is a second preset angle, so that the light signal with the same polarization direction as the second polarizer is adjusted to vertical polarized light after passing through the wave plate; the angle between the optical axis of the wave plate of the third polarization component 4333 and the horizontal plane is a third preset angle, so that the light signal with the same polarization direction as the second polarizer is adjusted to vertical polarized light after passing through the wave plate.

[0162] The first preset angle is different from the second preset angle.

[0163] The polarization direction of the second polarizer of the second polarization assembly is the same as the polarization direction of the second polarizer of the third polarization assembly, so that the second preset angle is the same as the third preset angle.

[0164] In some embodiments, the first polarizer is a horizontal polarizer, and the second polarizer is a 45° polarizer. For example, the first polarization component 4331 includes a horizontal polarizer, a Faraday plate, and a 45° polarizer, the second polarization component 4332 includes a horizontal polarizer, a Faraday plate, and a 45° polarizer, and the third polarization component 4333 includes a horizontal polarizer, a Faraday plate, and a 45° polarizer.

[0165] In some embodiments, the first polarizer is a vertical polarizer, and the second polarizer is a 135° polarizer. For example, the first polarization component 4331 includes a vertical polarizer, a Faraday plate, and a 135° polarizer, the second polarization component 4332 includes a vertical polarizer, a Faraday plate, and a 135° polarizer, and the third polarization component 4333 includes a vertical polarizer, a Faraday plate, and a 135° polarizer.

[0166] In some embodiments, the first polarizer, the Faraday plate, and the second polarizer are sequentially connected to form an isolator, the wave plate is located outside the isolator, and the wave plate is mounted on the substrate 404. For example, the horizontal polarizer, the Faraday plate, and the 45° polarizer are sequentially connected to form an isolator; the vertical polarizer, the Faraday plate, and the 135° polarizer form an isolator. In some embodiments, the first polarizer, the Faraday plate, and the second polarizer are sequentially bonded by glue.

[0167] In some embodiments, the first polarizer, the Faraday plate, the second polarizer, and the wave plate are sequentially connected to form an isolator, which is not only convenient for mounting the wave plate, but also can reduce the space of the transmitting housing. For example, the horizontal polarizer, the Faraday plate, the 45° polarizer, and the wave plate are sequentially connected to form an isolator; the vertical polarizer, the Faraday plate, the 135° polarizer, and the wave plate are sequentially connected to form an isolator. In some embodiments, the first polarizer, the Faraday plate, the second polarizer, and the wave plate are sequentially bonded by glue.

[0168] Since the structures of the first polarization component 4331, the second polarization component 4332 and the third polarization component 4333 are the same, except that the optical axis angles of the wave plates are slightly different, each polarization component is not introduced in detail, and only the first polarization component 4331 and the second polarization component 4332 are used as examples to introduce the polarization components.

[0169] Taking the first polarization component 4331 as an example, the first polarization component 4331 includes a horizontal polarizer, a Faraday plate, a 45° polarizer and a first wave plate. The horizontal polarizer, the Faraday plate, the 45° polarizer and the first wave plate are sequentially away from the first laser component 4311. After the optical signal passes through the horizontal polarizer, the Faraday plate and the 45° polarizer, a 45° polarized light is emitted. Fig.19 As shown in A, 45° polarized light (i.e., incident light signal with a polarization direction of 45°) is polarized by the first wave plate to obtain horizontally polarized light (i.e., an outgoing light signal with a horizontal polarization direction). The optical axis of the first wave plate is obtained by rotating the polarization direction of the incident light signal 22.5° clockwise, that is, the angle between the optical axis of the first wave plate and the horizontal plane is a first preset angle, and the first preset angle is 22.5°.

[0170] In some embodiments, the horizontal polarizer, the Faraday plate, and the 45° polarizer are sequentially connected to form a fourth isolator, and the first wave plate is located outside the fourth isolator.

[0171] In some embodiments, a horizontal polarizer, a Faraday plate, a 45° polarizer, and a first wave plate are sequentially connected to form a first isolator.

[0172] In some embodiments, the first polarization component 4331 includes a vertical polarizer, a Faraday plate, a 135° polarizer, and a first wave plate. The vertical polarizer, the Faraday plate, the 135° polarizer, and the first wave plate are sequentially away from the first laser component 4311. After the optical signal passes through the vertical polarizer, the Faraday plate, and the 135° polarizer, a 135° polarized light is emitted. Fig.19As shown in B, 135° polarized light (i.e., incident light signal with a polarization direction of 135°) is polarized by the first wave plate to obtain horizontally polarized light (i.e., an outgoing light signal with a horizontal polarization direction). The optical axis of the first wave plate is obtained by rotating the polarization direction of the incident light signal counterclockwise by 22.5°, that is, the angle between the optical axis of the first wave plate and the horizontal plane is a first preset angle, and the first preset angle is 157.5°.

[0173] In some embodiments, the vertical polarizer, the Faraday plate, and the 135° polarizer are sequentially connected to form a fourth isolator, and the first wave plate is located outside the fourth isolator.

[0174] In some embodiments, a vertical polarizer, a Faraday plate, a 135° polarizer, and a first wave plate are sequentially connected to form a first isolator.

[0175] The above is a structure without considering adjusting the magnetic poles of the first isolator or the fourth isolator. If the magnetic poles of the fourth isolator are adjusted, the fourth isolator includes a vertical polarizer, a Faraday plate, and a 45° polarizer. If the magnetic poles of the first isolator are adjusted, the first isolator includes a vertical polarizer, a Faraday plate, a 45° polarizer, and a first wave plate, and the angle between the optical axis of the first wave plate and the horizontal plane is 22.5°.

[0176] Taking the second polarization component 4332 as an example, the second polarization component 4332 includes a horizontal polarizer, a Faraday plate, a 45° polarizer and a second wave plate. The horizontal polarizer, the Faraday plate, the 45° polarizer and the second wave plate are sequentially away from the second laser component 4312. After the optical signal passes through the horizontal polarizer, the Faraday plate and the 45° polarizer, a 45° polarizer is emitted. Fig.19 As shown in C, 45° polarized light (i.e., incident light signal with a polarization direction of 45°) is polarized by the second wave plate to obtain vertically polarized light (i.e., an outgoing light signal with a vertical polarization direction). The optical axis of the second wave plate is obtained by rotating the polarization direction of the incident light signal counterclockwise by 22.5°, that is, the angle between the optical axis of the second wave plate and the horizontal plane is a second preset angle, and the second preset angle is 67.5°.

[0177] In some embodiments, the horizontal polarizer, the Faraday plate, and the 45° polarizer are sequentially connected to form a fifth isolator, and the second wave plate is located outside the fifth isolator.

[0178] In some embodiments, a horizontal polarizer, a Faraday plate, a 45° polarizer, and a second wave plate are sequentially connected to form a second isolator.

[0179] In some embodiments, the second polarization component 4332 includes a vertical polarizer, a Faraday plate, a 135° polarizer, and a second wave plate. The vertical polarizer, the Faraday plate, the 135° polarizer, and the second wave plate are sequentially away from the second laser component 4312. After the optical signal passes through the vertical polarizer, the Faraday plate, and the 135° polarizer, a 135° polarized light is emitted. Fig.19 As shown in D, 135° polarized light (i.e., incident light signal with a polarization direction of 135°) is polarized by the second wave plate to obtain vertically polarized light (i.e., an outgoing light signal with a vertical polarization direction). The optical axis of the second wave plate is obtained by rotating the polarization direction of the incident light signal 22.5° clockwise, that is, the angle between the optical axis of the second wave plate and the horizontal plane is a second preset angle, and the second preset angle is 112.5°.

[0180] In some embodiments, the vertical polarizer, the Faraday plate, and the 135° polarizer are sequentially connected to form a fifth isolator, and the second wave plate is located outside the fifth isolator.

[0181] In some embodiments, the vertical polarizer, the Faraday plate, the 135° polarizer, and the second wave plate are sequentially connected to form a second isolator.

[0182] The above is a structure without considering adjusting the magnetic poles of the second isolator or the fifth isolator. If the magnetic poles of the fifth isolator are adjusted, the fifth isolator includes a vertical polarizer, a Faraday plate, and a 45° polarizer. If the magnetic poles of the second isolator are adjusted, the second isolator includes a vertical polarizer, a Faraday plate, a 45° polarizer, and a second wave plate, and the angle between the optical axis of the second wave plate and the horizontal plane is 67.5°.

[0183] The third polarization component 4333 may include a sixth isolator and a third wave plate, or may include a third isolator, wherein the third isolator includes a third wave plate, and the angle between the third wave plate and the horizontal plane is a third preset angle. The third polarization component 4333 and the second polarization component 4332 both function to adjust the deflection direction of the optical signal so that the polarization direction of the optical signal is vertical, therefore, the sixth isolator is the same as the fifth isolator, and the third isolator is the same as the second isolator, which will not be described in detail here.

[0184] The sixth isolator is the same as the fifth isolator, which means that the sixth isolator can be any embodiment of the fifth isolator; the third isolator is the same as the second isolator, which means that the third isolator can be any embodiment of the second isolator.

[0185] Fig. 20 FIG. 1 is an exploded view of a supporting member, a second polarization combining member, and a third polarization combining member provided according to some embodiments. Fig. 20As shown, a supporting member 407 is also provided on the substrate 404, one side of the supporting member 407 supports the third polarization combining member 4343, and the other side of the supporting member 407 supports the second polarization combining member 4342. The third polarization combining member 4343 is arranged in parallel with the second polarization combining member 4342. The supporting member 407 is provided with a first through hole, one end of the first through hole is connected to the third polarization combining member 4343, and the other end of the first through hole faces the third polarization component 4333, so that the vertical polarization light of the third wavelength optical signal emitted by the third polarization component 4333 is incident on the third polarization combining member 4343 through the first through hole; the supporting member 407 is also provided with a second through hole, one end of the second through hole is connected to the second polarization combining member 4342, and the other end of the second through hole is connected to the third polarization combining member 4343, so that the third wavelength optical signal reflected by the third polarization combining member 4343 is reflected to the second polarization combining member 4342 through the second through hole.

[0186] Fig.21 It is a structural diagram of a supporting member provided according to some embodiments. Fig. 22 It is a structural diagram of a supporting member provided according to some embodiments at another viewing angle. Fig.23 2 is a cross-sectional view of a support member provided according to some embodiments. Fig.21 , Fig. 22 and Fig.23 As shown, in some embodiments, the side surface of the supporting member 407 includes a first limiting surface 471, a first supporting surface 472, a second limiting surface 473, a first connecting surface 474, a second connecting surface 475, a third limiting surface 476, a second supporting surface 477, a third connecting surface and a fourth connecting surface, and the first limiting surface 471, the first supporting surface 472, the second limiting surface 473, the first connecting surface 474, the second connecting surface 475, the third limiting surface 476, the second supporting surface 477, the third connecting surface and the fourth connecting surface are connected in sequence. The first supporting surface 472 supports the third polarization combining component 4343, and the first limiting surface 471, the first supporting surface 472 and the second limiting surface 473 are connected in sequence to form a recessed limiting groove to limit the third polarization combining component 4343; the first connecting surface 474 is in contact and connected with the fourth sub-emitting side plate 4241 of the fourth emitting side plate 424, and the second connecting surface 475 faces the third polarization component 4333; the second supporting surface 477 supports the second polarization combining component 4342, and the third limiting surface 476 is connected to the second supporting surface 477 to form a recessed limiting groove to limit the second polarization combining component 4342.

[0187] In some embodiments, the first supporting surface 472 and the second supporting surface 477 are arranged in parallel so that the vertically polarized light of the third wavelength optical signal reflected by the third polarization combiner 4343 is reflected to the second polarization combiner 4342 as much as possible.

[0188] like Fig.21 , Fig. 22 and Fig.23 As shown, one end of the first through hole 478 is located at the second connecting surface 475, the other end of the first through hole 478 is located at the first supporting surface 472, one end of the second through hole 479 is located at the first supporting surface 472, the other end of the second through hole 479 is located at the second supporting surface 477, and the first through hole 478 is connected to the second through hole 479, so that the third polarization combiner 4343 receives the vertical polarized light of the third wavelength optical signal through the first through hole 478, and reflects the vertical polarized light of the third wavelength optical signal to the second polarization combiner 4342 through the second through hole 479.

[0189] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. An optical module, characterized in that: include: Light emitting components, including: A laser assembly, configured to emit a first wavelength optical signal, a second wavelength optical signal, and a third wavelength optical signal; A polarization component, used for adjusting the polarization direction of an optical signal; the polarization component comprises a first polarization component, a second polarization component and a third polarization component, wherein the first polarization component, the second polarization component and the third polarization component each comprise a first polarizer, a Faraday plate, a second polarizer and a wave plate, wherein the first polarizer, the Faraday plate, the second polarizer and the wave plate are sequentially away from the laser component, and a first wavelength optical signal sequentially passes through the first polarizer, the Faraday plate, the second polarizer and the wave plate of the first polarization component to emit horizontally polarized light, a third wavelength optical signal sequentially passes through the first polarizer, the Faraday plate, the second polarizer and the wave plate of the third polarization component to emit a first vertically polarized light, and a second wavelength optical signal sequentially passes through the first polarizer, the Faraday plate, the second polarizer and the wave plate of the second polarization component to emit a second vertically polarized light; A polarization combining component is used to combine multiple polarized light beams into one beam; the polarization combining component includes a first polarization combining component, a second polarization combining component and a third polarization combining component, the third polarization combining component is used to reflect the first vertical polarized light to the second polarization combining component, the second polarization combining component is used to transmit the first vertical polarized light to the first polarization combining component, and also reflect the second vertical polarized light to the first polarization combining component, the first polarization combining component is used to reflect the second vertical polarized light and the first vertical polarized light, and also transmit the horizontal polarized light to achieve beam combining.

2. The optical module according to claim 1, characterized in that: The first polarizer, the Faraday plate, the second polarizer and the wave plate are sequentially connected to form an isolator; The angle between the optical axis of the wave plate of the first polarization component and the horizontal plane is a first preset angle, so that the first polarization component emits horizontal polarized light; the angle between the optical axis of the wave plate of the second polarization component and the horizontal plane is a second preset angle, so that the second polarization component emits vertical polarized light; the angle between the optical axis of the wave plate of the third polarization component and the horizontal plane is a third preset angle, so that the third polarization component emits vertical polarized light; The first preset angle is different from the second preset angle; The polarization direction of the second polarizer of the second polarization component is the same as the polarization direction of the second polarizer of the third polarization component, so that the second preset angle is the same as the third preset angle.

3. The optical module according to claim 1, characterized in that: The first polarizer, the Faraday plate and the second polarizer are sequentially connected to form an isolator, and the wave plate is located outside the isolator; The angle between the optical axis of the wave plate of the first polarization component and the horizontal plane is a first preset angle, so that the first polarization component emits horizontal polarized light; the angle between the optical axis of the wave plate of the second polarization component and the horizontal plane is a second preset angle, so that the second polarization component emits vertical polarized light; the angle between the optical axis of the wave plate of the third polarization component and the horizontal plane is a third preset angle, so that the third polarization component emits vertical polarized light; The first preset angle is different from the second preset angle; The polarization direction of the second polarizer of the second polarization component is the same as the polarization direction of the second polarizer of the third polarization component, so that the second preset angle is the same as the third preset angle.

4. The optical module according to claim 1, characterized in that: The first polarizer is a horizontal polarizer, and the second polarizer is a 45° polarizer; the first polarizer is a vertical polarizer, and the second polarizer is a 135° polarizer.

5. The optical module according to claim 1, characterized in that: The light emitting component further comprises a supporting member, the supporting member comprises a first supporting surface and a second supporting surface, the first supporting surface is used to support the third polarization wave combining component, the second supporting surface is used to support the second polarization wave combining component, and the first supporting surface is arranged in parallel with the second supporting surface; The supporting member has a first through hole and a second through hole, one end of the first through hole and one end of the second through hole are both located on the first supporting surface, the other end of the first through hole is located on a side of the supporting member facing the third polarization combining element, the other end of the second through hole is located on the second supporting surface, and the first through hole and the second through hole are connected.

6. The optical module according to claim 5, characterized in that: The optical emitting component further comprises an emitting housing, wherein a third through hole is disposed at the first end of the emitting device, and the third through hole is coaxial with the first polarization combining device, so that the optical signal combined by the first polarization combining device is emitted through the third through hole; The second end of the transmitting shell is provided with a transmitting pin, one end of which is connected to the circuit board, and the other end of which extends into the transmitting shell and is connected to the laser component in the transmitting shell by wire bonding.

7. The optical module according to claim 6, characterized in that: The launching shell includes a first launching side plate, a second launching side plate, a third launching side plate and a fourth launching side plate, the first launching side plate, the second launching side plate, the third launching side plate and the fourth launching side plate are connected end to end, the first launching side plate is provided with a third through hole, the third launching side plate includes a first sub-launching side plate, a second sub-launching side plate and a third sub-launching side plate, the first sub-launching side plate, the second sub-launching side plate and the third sub-launching side plate are stepped, the fourth launching side plate includes a fourth sub-launching side plate and a fifth sub-launching side plate, the fourth sub-launching side plate and the fifth sub-launching side plate are stepped, the first sub-launching side plate is connected to the fourth sub-launching side plate to limit the substrate, wherein the substrate supports the laser assembly.

8. The optical module according to claim 6, characterized in that: Also includes: An optical receiving component, used for receiving multiple optical signals of different wavelengths; A circuit board, comprising a first circuit board and a second circuit board; one end of the second circuit board is connected to the light emitting component and the light receiving component respectively, and the other end of the second circuit board is connected to the first circuit board; Wherein, the light receiving component comprises a transceiver housing, the transceiver housing and the transmitting housing both have an opening, and the opening of the transceiver housing is oriented opposite to the opening of the transmitting housing; The transceiver shell includes a plurality of connection holes, one of which is connected to the light emitting component. A accommodating cavity body and a placement piece are arranged in the transceiver shell. One end of the placement piece is connected to the accommodating cavity body, and the other end of the placement piece is connected to an inner side wall of the transceiver shell. The placement piece has a first placement groove, one port of the first placement groove is connected to the connection hole connected to the light emitting component, and the other port of the first placement groove is connected to the accommodating cavity body. The central axes of one port of the first placement groove and the other port of the first placement groove do not overlap. A first displacement prism is arranged in the first placement groove so that the optical signal emitted by the light emitting component is incident into the accommodating cavity body after passing through the first displacement prism.

9. An optical module, characterized in that: include: Circuit boards; The light emitting component is electrically connected to the circuit board and comprises: A laser assembly, configured to emit a first wavelength optical signal, a second wavelength optical signal, and a third wavelength optical signal; A polarization component, used for adjusting the polarization direction of an optical signal; the polarization component comprises a first polarization component, a second polarization component and a third polarization component, wherein the first polarization component, the second polarization component and the third polarization component each comprise a first polarizer, a Faraday plate, a second polarizer and a wave plate, wherein the first polarizer, the Faraday plate, the second polarizer and the wave plate are sequentially away from the laser component, and a first wavelength optical signal sequentially passes through the first polarizer, the Faraday plate, the second polarizer and the wave plate of the first polarization component to emit a first vertical polarized light, a second wavelength optical signal sequentially passes through the first polarizer, the Faraday plate, the second polarizer and the wave plate of the second polarization component to emit a second vertical polarized light, and a third wavelength optical signal sequentially passes through the first polarizer, the Faraday plate, the second polarizer and the wave plate of the third polarization component to emit a horizontal polarized light; A polarization combining component, used for combining multiple polarized light beams into one beam; the polarization combining component comprises a first polarization combining component, a second polarization combining component and a third polarization combining component, the first polarization combining component is used for reflecting the first vertical polarized light to the second polarization combining component, the second polarization combining component is used for transmitting the first vertical polarized light to the third polarization combining component, and also reflecting the second vertical polarized light to the third polarization combining component, the third polarization combining component is used for reflecting the first vertical polarized light and the second vertical polarized light, and also transmitting the horizontal polarized light, so as to achieve beam combining; The optical receiving component is electrically connected to the circuit board and is used for receiving the fourth wavelength optical signal, the fifth wavelength optical signal and the sixth wavelength optical signal.

10. The optical module according to claim 9, characterized in that: The first polarizer, the Faraday plate, the second polarizer and the wave plate are sequentially connected to form an isolator, or the first polarizer, the Faraday plate and the second polarizer are sequentially connected to form an isolator, and the wave plate is located outside the isolator.

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