Optical module

Abstract

According to the optical module provided by the invention, a light emitting component comprises an emitting base and an emitting cover plate, and a first mounting surface is formed on the edge of the top of the emitting base; the circuit board is provided with a mounting hole. A first connecting layer and a second connecting layer are arranged on the surface of the circuit board at the edge of the mounting hole, the first connecting layer is located on the front of the circuit board, and the second connecting layer is located on the back of the circuit board; the second connecting layer is provided with a first groove, and the first groove penetrates through the second connecting layer to separate the second connecting layer. The transmitting base is embedded in the mounting hole, the mounting surface is connected with the second connecting layer, the second connecting layer can improve the bonding strength of the transmitting base and the circuit board, and the bonding strength of the transmitting base and the circuit board can be balanced by combining the first digging groove, so that damage to the circuit board caused by repairing and dismounting of the transmitting base is reduced. The emission cover plate covers the emission base, the bottom of the emission cover plate is connected with the first connecting layer, and the first connecting layer can improve the bonding strength of the emission cover plate and the circuit board.

Description

[0001] This application claims the priority of the Chinese patent application filed with the China Patent Office on June 30, 2023, with application number 202310798471.0 and invention name “Optical Module”, the entire contents of which are incorporated by reference in this application. Technical Field

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

[0003] Optical communication technology is used in new services and application modes such as cloud computing, mobile Internet, and video. In optical communication technology, optical modules are devices that realize photoelectric signal conversion and are one of the key components in optical communication equipment.

[0004] With the development of optical communication technology, the transmission rate of optical modules has been continuously improved, especially in recent years, 800G optical modules have been gradually introduced to the market. In order to achieve the transmission rate of 800G optical modules, it is necessary to integrate 8 optical transmitters and 8 optical receivers in the QSFP-DD or OSFP package. To achieve the required functions in such a small space, it is a great challenge for high-frequency performance, optical performance, heat dissipation characteristics, structural complexity, manufacturability, etc. Utility Model Content

[0005] The embodiments of the present disclosure provide an optical module, which uses a special structural design and a reasonable assembly process to achieve the function of a high transmission rate optical module in a small space.

[0006] The present disclosure provides an optical module, comprising:

[0007] A circuit board having a mounting hole formed thereon; a first connection layer and a second connection layer are arranged at the edge of the mounting hole, the first connection layer is located on the front side of the circuit board, and the second connection layer is located on the back side of the circuit board; a first groove is arranged on the second connection layer, the first groove penetrates the second connection layer, and the first groove separates the second connection layer;

[0008] The light emitting component is embedded in the mounting hole and is used to generate multi-path optical signals; the light emitting component includes:

[0009] The transmitting base has a first mounting surface formed on the top edge; the transmitting base is embedded in the mounting hole, and the first mounting surface is connected to the second connecting layer;

[0010] The optical transmitting assembly is arranged on the transmitting base and is used to generate multi-channel optical signals;

[0011] The transmitting cover plate is covered on the transmitting base, and the bottom of the transmitting cover plate is connected to the first connecting layer.

[0012] In the optical module provided by the present disclosure, the optical emitting component includes an emitting base and an emitting cover plate, and a first mounting surface is formed at the edge of the top of the emitting base; and a mounting hole is provided on the circuit board. A first connecting layer and a second connecting layer are provided on the surface of the circuit board at the edge of the mounting hole, wherein the first connecting layer is located on the front side of the circuit board, and the second connecting layer is located on the back side of the circuit board; and a first groove is provided on the second connecting layer, and the first groove penetrates the second connecting layer to separate the second connecting layer. The emitting base is embedded in the mounting hole, and the mounting surface is connected to the second connecting layer. The second connecting layer can improve the bonding strength between the emitting base and the circuit board, and the bonding strength between the emitting base and the circuit board can be balanced in combination with the first groove, so as to reduce the damage to the circuit board caused by the repair and removal of the emitting base. The emitting cover plate is covered on the emitting base, and the bottom of the emitting cover plate is connected to the first connecting layer. The first connecting layer can improve the bonding strength between the emitting cover plate and the circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the present disclosure, the following briefly introduces the drawings required to be used in some embodiments of the present disclosure. Obviously, the drawings described below are only drawings of some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can also be obtained based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams, and are not intended to limit the actual size of the product involved in the embodiments of the present disclosure, the actual process of the method, the actual timing of the signal, etc.

[0014] Figure 1 A partial structural diagram of an optical communication system provided according to some embodiments of the present disclosure;

[0015] Figure 2 A partial structural diagram of a host computer provided according to some embodiments of the present disclosure;

[0016] Figure 3 A structural diagram of an optical module provided according to some embodiments of the present disclosure;

[0017] Figure 4 An exploded view of an optical module provided according to some embodiments of the present disclosure;

[0018] Figure 5 A schematic diagram of the internal structure of an optical module provided according to some embodiments of the present disclosure;

[0019] Figure 6 A schematic diagram of the internal structure of another optical module provided according to some embodiments of the present disclosure;

[0020] Figure 7 The internal structure of another optical module provided according to some embodiments of the present disclosure is shown in FIG. Figure 1 ;

[0021] Figure 8 The internal structure of another optical module provided according to some embodiments of the present disclosure is shown in FIG. Figure 2 ;

[0022] Fig. 9 It is an exploded schematic diagram of a light emitting component provided according to some embodiments of the present disclosure;

[0023] Fig.10 A partial schematic diagram of a light emitting component provided according to some embodiments of the present disclosure;

[0024] Fig.11 A schematic diagram of the structure of a launching base provided according to some embodiments of the present disclosure;

[0025] Fig.12 A cross-sectional view of a light emitting component and a circuit board provided according to some embodiments of the present disclosure;

[0026] Fig.13 It is an exploded schematic diagram of another light emitting component provided according to some embodiments of the present disclosure;

[0027] Fig.14 A partial schematic diagram of another light emitting component provided according to some embodiments of the present disclosure;

[0028] Fig.15 A schematic diagram of the structure of a launch cover plate provided according to some embodiments of the present disclosure;

[0029] Fig.16 A diagram showing a use state of a launch cover provided according to some embodiments of the present disclosure;

[0030] Fig.17 A schematic diagram of the structure of another transmitting cover plate provided according to some embodiments of the present disclosure;

[0031] Fig.18 A schematic diagram of another launch cover in use according to some embodiments of the present disclosure;

[0032] Fig.19 A partial schematic diagram of another light emitting component provided according to some embodiments of the present disclosure;

[0033] Fig. 20 A schematic diagram of assembling another light emitting component and a circuit board according to some embodiments of the present disclosure;

[0034] Fig.21 A schematic diagram of the structure of another launching base provided according to some embodiments of the present disclosure;

[0035] Fig. 22It is a schematic structural diagram of a third optical fiber fixing head provided according to some embodiments of the present disclosure;

[0036] Fig.23 is a cross-sectional view of a third optical fiber fixing head provided according to some embodiments of the present disclosure;

[0037] Fig.24 A cross-sectional view of another light emitting component and a circuit board provided according to some embodiments of the present disclosure;

[0038] Fig.25 A schematic diagram of the structure of another transmitting cover plate provided according to some embodiments of the present disclosure;

[0039] Fig.26 A diagram showing another use state of a launch cover provided according to some embodiments of the present disclosure;

[0040] Fig. 27 A partial schematic diagram of another transmitting component provided according to some embodiments of the present disclosure;

[0041] Fig.28 A schematic diagram of assembling another transmitting component and a circuit board according to some embodiments of the present disclosure;

[0042] Fig.29 A schematic diagram of the structure of another launching base provided according to some embodiments of the present disclosure;

[0043] Fig.30 A cross-sectional view of another light emitting component and a circuit board provided according to some embodiments of the present disclosure;

[0044] Fig.31 A schematic diagram of the structure of another transmitting cover plate provided according to some embodiments of the present disclosure;

[0045] Fig.32 A diagram showing another use state of a launch cover provided according to some embodiments of the present disclosure;

[0046] Fig.33 A partially exploded schematic diagram of a first light receiving component provided according to some embodiments of the present disclosure;

[0047] Fig.34 A partial structural schematic diagram of a first light receiving component provided according to some embodiments of the present disclosure;

[0048] Fig.35 A schematic diagram of the structure of a receiving shell provided according to some embodiments of the present disclosure;

[0049] Fig.36 A cross-sectional view of a light receiving component and a circuit board provided according to some embodiments of the present disclosure;

[0050] Fig.37 is an exploded schematic diagram of another first light receiving component provided according to some embodiments of the present disclosure;

[0051] Fig.38 A schematic diagram of the structure of a receiving fixed head provided according to some embodiments of the present disclosure;

[0052] Fig.39 It is an exploded schematic diagram of a receiving fixed head provided according to some embodiments of the present disclosure;

[0053] Fig.40 A cross-sectional view of a receiving fixing head provided according to some embodiments of the present disclosure;

[0054] Fig.41 A schematic diagram of the structure of another receiving fixed head provided according to some embodiments of the present disclosure;

[0055] Fig.42 A partial schematic diagram of a circuit board provided according to some embodiments of the present disclosure Figure 1 ;

[0056] Fig.43 A partial schematic diagram of a circuit board provided according to some embodiments of the present disclosure Figure 2 ;

[0057] Fig.44 A partial schematic diagram of the interior of an optical module provided according to some embodiments of the present disclosure;

[0058] Fig.45 A structural diagram of a fixing bracket provided according to some embodiments of the present disclosure Figure 1 ;

[0059] Fig.46 A structural diagram of a fixing bracket provided according to some embodiments of the present disclosure Figure 2 ;

[0060] Fig.47 A schematic diagram of the structure of a gasket provided according to some embodiments of the present disclosure;

[0061] Fig.48 A diagram showing a state of use of an optical fiber fixing frame provided according to some embodiments of the present disclosure;

[0062] Fig.49 It is a schematic structural diagram of another optical fiber fixing frame provided according to some embodiments of the present disclosure;

[0063] Fig.50 It is a schematic diagram of assembling another optical fiber fixing frame and a gasket according to some embodiments of the present disclosure;

[0064] Fig.51 A partial schematic diagram of a lower housing provided according to some embodiments of the present disclosure;

[0065] Fig.52 A use state of a lower shell provided according to some embodiments of the present disclosure Figure 1 ;

[0066] Fig.53 A use state of a lower shell provided according to some embodiments of the present disclosure Figure 2 ;

[0067] Fig.54 It is a schematic structural diagram of another optical fiber fixing frame provided according to some embodiments of the present disclosure;

[0068] Fig.55 It is a schematic diagram of assembling another optical fiber fixing frame provided according to some embodiments of the present disclosure;

[0069] Fig.56 A schematic diagram of another optical fiber fixing component provided according to some embodiments of the present disclosure Figure 1 ;

[0070] Fig.57 A schematic diagram of another optical fiber fixing component provided according to some embodiments of the present disclosure Figure 2 ;

[0071] Fig.58 A cross-sectional view of another optical fiber fixing component provided according to some embodiments of the present disclosure Figure 1 ;

[0072] Fig.59 A cross-sectional view of another optical fiber fixing component provided according to some embodiments of the present disclosure Figure 2 ;

[0073] Fig.60 A partial schematic diagram of another optical fiber fixing component provided according to some embodiments of the present disclosure;

[0074] Fig.61 A partial schematic diagram of another lower housing provided according to some embodiments of the present disclosure;

[0075] Fig.62 It is a schematic diagram of an exploded structure of a local optical module provided according to some embodiments of the present disclosure;

[0076] Fig.63 A cross-sectional view of an optical module provided according to some embodiments of the present disclosure;

[0077] Fig.64 for Fig.63 A partial enlarged view of the middle A;

[0078] Fig.65 A schematic diagram of a partial structure of another optical module provided according to some embodiments of the present disclosure;

[0079] Fig.66 A partial structure diagram of another optical module provided according to some embodiments of the present disclosure Figure 2 ;

[0080] Fig.67 is an exploded schematic diagram of a fifth optical fiber adapter provided according to some embodiments of the present disclosure;

[0081] Fig.68 It is a structural schematic diagram of a fixing member provided according to some embodiments of the present disclosure;

[0082] Fig.69 A schematic diagram of the structure of a plug pin provided according to some embodiments of the present disclosure;

[0083] Fig.70 It is an exploded schematic diagram of an upper shell and a lower shell provided according to some embodiments of the present disclosure;

[0084] Fig.71 A partial cross-sectional view of an optical module provided according to some embodiments of the present disclosure;

[0085] Fig.72 A partial schematic diagram of another optical module provided according to some embodiments of the present disclosure;

[0086] Fig.73 A schematic diagram of the structure of a wiring harness provided according to some embodiments of the present disclosure;

[0087] Fig.74 A schematic diagram of assembling a wiring harness and a circuit board according to some embodiments of the present disclosure;

[0088] Fig.75 It is a structural schematic diagram of an upper shell provided according to some embodiments of the present disclosure;

[0089] Fig.76 It is an exploded schematic diagram of an upper housing provided according to some embodiments of the present disclosure;

[0090] Fig.77 This is a schematic exploded view of another upper shell provided according to some embodiments of the present disclosure. DETAILED DESCRIPTION

[0091] The following will be combined with the accompanying drawings to clearly and in detail describe the technical solutions in some embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present disclosure.

[0092] 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.

[0093] 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.

[0094] Figure 1 FIG. 1 is a partial structural diagram of an optical communication system provided according to some embodiments of the present disclosure. 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 .

[0095] 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.

[0096] 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.

[0097] 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.

[0098] 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.

[0099] 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.

[0100] Figure 2 1 is a partial structural diagram of a host computer provided according to some embodiments of the present disclosure. 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.

[0101] 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.

[0102] Figure 3 is a structural diagram of an optical module provided according to some embodiments of the present disclosure, Figure 4 FIG. 1 is an exploded view of an optical module provided according to some embodiments of the present disclosure. 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.

[0103] 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 203 and 204 . The outer contour of the housing is generally a square body.

[0104] 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 respect to the bottom plate 2021; the upper shell 201 includes an upper cover plate 2011, and the upper cover plate 2011 covers the two lower side plates 2022 of the lower shell 202 to form the above-mentioned shell.

[0105] 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 an upper cover plate 2011 and two upper side plates 2012 located on both sides of the upper cover plate 2011 and vertically arranged with the upper cover plate 2011, and the two upper side plates 2012 are combined with the two lower side plates 2022 to realize that the upper shell 201 is covered on the lower shell 202.

[0106] The direction of the line connecting the two openings 203 and 204 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 203 is located at the end of the optical module 200 ( Figure 3 The opening 204 is located at the end of the optical module 200 ( Figure 3Alternatively, the opening 203 is located at the end of the optical module 200, and the opening 204 is located at the side of the optical module 200. The opening 203 is an electrical port, and the end of the circuit board 300 extends from the opening 203 and is inserted into the electrical connector of the host computer 100; the opening 204 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.

[0107] The upper shell 201 and the lower shell 202 are combined to facilitate the installation of the circuit board 300, the light emitting component 400, the light receiving component 500, etc. into the above-mentioned shell, and the upper shell 201 and the lower shell 202 can encapsulate and protect the above-mentioned components. In addition, when assembling the circuit board 300, the light emitting component 400, the light receiving component 500, etc., the above-mentioned upper shell 201 and the lower shell 202 are combined to facilitate the deployment of the positioning components, heat dissipation components and electromagnetic shielding components of these components, which is conducive to the automated production.

[0108] In some embodiments, the upper shell 201 and the lower shell 202 are made of metal materials to facilitate electromagnetic shielding and heat dissipation.

[0109] 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 100, or to release the fixed connection between the optical module 200 and the host computer 100.

[0110] 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.

[0111] 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, LA), clock and data recovery chips (Clock and Data Recovery, CDR), power management chips, digital signal processing (Digital Signal Processing, DSP) chips.

[0112] 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.

[0113] The circuit board 300 also includes a gold finger 301 formed on the end surface thereof. The gold finger 301 is composed of a plurality of independent pins. The circuit board 300 is inserted into the cage 106, and the gold finger 301 is connected to the electrical connector in the cage 106. The gold finger 301 can be provided on only one side of the circuit board 300 (e.g. 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 more pins, so as to adapt to occasions where the number of pins is large. The gold finger 301 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.

[0114] The optical emitting component 400 is used to receive the electrical signal transmitted by the circuit board 300, so that the optical emitting component 400 generates an optical signal; the optical receiving component 500 is used to receive the optical signal input from the outside of the optical module and convert it into an electrical signal. At least one of the optical emitting component 400 or the optical receiving component 500 is located on the side of the circuit board 300 away from the gold finger 301.

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

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

[0117] In some embodiments, the optical module 200 also includes an optical transmission component 700, which is disposed in the housing. The optical transmission component 700 is used to establish an optical connection between the optical emitting component 400, the optical receiving component 500 and the external optical fiber 101 (hereinafter referred to as the external optical fiber), so that the optical signal generated by the optical emitting component 400 can be coupled to the external optical fiber, and the optical signal input by the external optical fiber can be coupled to the optical receiving component.

[0118] In some embodiments, the optical transmission component 700 includes an optical fiber adapter and an optical fiber, which optical fiber can also be referred to as an internal optical fiber relative to an external optical fiber. One end of the optical fiber is connected to the optical fiber adapter, and the other end of the optical fiber is connected to the optical emitting component 400 or the optical receiving component 500. Exemplarily, the optical transmission component 700 includes one or more optical fiber adapters, and the optical fiber includes multiple optical fibers. The optical emitting component 400 can be connected to one or more optical fiber adapters via one or more optical fibers, and the optical receiving component 500 can be connected to one or more optical fiber adapters via multiple optical fibers. In the embodiments of the present disclosure, the structural form of the optical fiber adapter is not limited to one, such as the optical fiber adapter can include an LC plug form or an MT plug form.

[0119] In some embodiments, to facilitate the assembly and fixation of the optical fiber adapter in the optical module 200, the optical module 200 further includes an optical fiber fixing component 800. The optical fiber fixing component 800 is disposed in the optical port and fixedly connected to the optical fiber adapter to fix the optical fiber adapter at the optical port.

[0120] Figure 5 FIG. 1 is a schematic diagram of the internal structure of an optical module provided according to some embodiments of the present disclosure. Figure 4 and Figure 5 As shown, in some embodiments, a mounting hole 302 is provided on the circuit board 300, and the light emitting component 400 is assembled and connected to the mounting hole 302. Exemplarily, the light emitting component 400 is embedded in the mounting hole 302. In some embodiments, the mounting hole 302 is a through hole, so that the top of the light emitting component 400 is located above the mounting hole 302 and the bottom of the light emitting component 400 is located below the mounting hole 302.

[0121] In some embodiments, the central axis of the mounting hole 302 is close to the central axis of the circuit board 300 , that is, the mounting hole 302 is located close to the center of the circuit board 300 in the width direction.

[0122] In some embodiments, a DSP chip 303 is disposed on the front of the circuit board 300; the DSP chip 303 is used to transmit a high-frequency signal to the optical emitting component 400. The optical emitting component 400 receives the high-frequency signal transmitted by the DSP chip 303 to generate an optical signal. Among them, the two opposite surfaces on the circuit board 300 are the main bearing surfaces of the circuit board 300, one of which is called the front of the circuit board 300, facing the upper cover 2011; the other surface is the back of the circuit board 300, facing the bottom plate 2021, and the front of the circuit board 300 and the back of the circuit board 300 are opposite surfaces.

[0123] In some embodiments, the optical receiving component 500 includes a first optical receiving component 510 and a second optical receiving component 520, which are disposed on the back of the circuit board 300. The first optical receiving component 510 and the second optical receiving component 520 are respectively used to receive optical signals input from the outside.

[0124] In some embodiments, the DSP chip 303 may be disposed on the back side of the circuit board 300 , and the first light receiving component 510 and the second light receiving component 520 may be disposed on the front side of the circuit board 300 .

[0125] In some embodiments, the first light receiving component 510 is disposed at an end of the light emitting component 400 close to the gold finger 301 , that is, the first light receiving component 510 is closer to the electrical port of the optical module than the light emitting component 400 . The first light receiving component 510 is disposed at the edge of the side of the circuit board 300 .

[0126] In some embodiments, the second light receiving component 520 is disposed at an end of the light emitting component 400 close to the gold finger 301 , that is, the second light receiving component 520 is closer to the electrical port of the optical module than the light emitting component 400 . The second light receiving component 520 is disposed at the edge of the side of the circuit board 300 .

[0127] In some embodiments, the first light receiving component 510 is located at one side of one end of the light emitting component 400, and the second light receiving component 520 is located at the other side of one end of the light emitting component 400. Exemplarily, the first light receiving component 510 is located at the edge of one side of the circuit board 300, and the second light receiving component 520 is located at the edge of the other side of the circuit board 300.

[0128] In some embodiments, the first light receiving component 510 is connected to the light emitting component 400; for example, the bottom support of the light emitting component 400 is connected to the first light receiving component 510. The light emitting component 400 supports the first light receiving component 510, which can not only reduce the space occupied by the first light receiving component 510 on the circuit board 300, but also facilitate the DSP chip 303 to be as close as possible to the light emitting component 400 and the first light receiving component 510, so that the high-frequency signal transmission distance between the DSP chip 303 and the emitting component 400 and the first light receiving component 510 is as short as possible. Exemplarily, the bottom of the light emitting component 400 supports some components in the first light receiving component 510.

[0129] In some embodiments, the second light receiving component 520 is connected to the light emitting component 400; for example, the bottom support of the light emitting component 400 is connected to the second light receiving component 520. The light emitting component 400 supports the second light receiving component 520, which can not only reduce the space occupied by the second light receiving component 520 on the circuit board 300, but also make the DSP chip 303 as close to the light emitting component 400 and the second light receiving component 520 as possible, so that the high-frequency signal transmission distance between the DSP chip 303 and the emitting component 400 and the second light receiving component 520 is as short as possible. Exemplarily, the bottom of the light emitting component 400 supports some components in the second light receiving component 520.

[0130] In some embodiments, the first light receiving component 510 is disposed along the length direction of the circuit board 300 , and the second light receiving component 520 is disposed along the length direction of the circuit board 300 .

[0131] In some embodiments, the optical transmission assembly 700 includes a first transmission group 710, one end of the first transmission group 710 is connected to the optical fiber fixing component 800, and the other end of the first transmission group 710 is connected to the optical emission component 400. Exemplarily, the first transmission group 710 includes a first optical fiber 711, and the end of the first optical fiber 711 is connected to the optical emission component 400. The first optical fiber 711 may include one optical fiber or two optical fibers, etc. In some embodiments, when the number of optical fibers in the first optical fiber 711 is greater than or equal to 4, the first optical fiber 711 may be called a first optical fiber ribbon.

[0132] In some embodiments, the optical transmission assembly 700 includes a second transmission group 720, one end of the second transmission group 720 is connected to the optical fiber fixing component 800, and the other end of the second transmission group 720 is connected to the first optical receiving component 510. Exemplarily, the second transmission group 720 includes a second optical fiber 721, and the end of the second optical fiber 721 is connected to the first optical receiving component 510. The second optical fiber 721 may include one optical fiber or multiple optical fibers. In some embodiments, when the number of optical fibers in the second optical fiber 721 is greater than or equal to 4, the second optical fiber 721 may be called a second optical fiber ribbon.

[0133] In some embodiments, the optical transmission component 700 includes a third transmission group 730, one end of the third transmission group 730 is connected to the optical fiber fixing component 800, and the other end of the third transmission group 730 is connected to the second optical receiving component 520. Exemplarily, the third transmission group 730 includes a third optical fiber 731, and the end of the third optical fiber 731 is connected to the second optical receiving component 520. The third optical fiber 731 may include one optical fiber or multiple optical fibers. In some embodiments, when the number of optical fibers in the third optical fiber 731 is greater than or equal to 4, the third optical fiber 731 may be called a third optical fiber ribbon.

[0134] Figure 6 FIG. 1 is a schematic diagram of the internal structure of another optical module provided according to some embodiments of the present disclosure. Figure 6 As shown, the first light receiving component 510 is tilted so that the first light receiving component 510 is not arranged along the length direction of the circuit board 300. Exemplarily, one end of the first light receiving component 510 for inputting light is closer to the side of the circuit board 300 than the other end of the first light receiving component 510. The tilt angle of the first light receiving component 510 is 8-10°.

[0135] In some embodiments, the second light receiving component 520 is tilted so that the second light receiving component 520 is not disposed along the length direction of the circuit board 300. Exemplarily, one end of the second light receiving component 520 for inputting light is closer to the side of the circuit board 300 than the other end of the second light receiving component 520. The tilt angle of the second light receiving component 520 is 8-10°.

[0136] The first light receiving component 510 or the second light receiving component 520 is tiltedly arranged on the circuit board 300, which can reduce the space between the first light receiving component 510 and the second light receiving component 520 in the length direction of the circuit board 300, and is convenient for controlling the distance between the DSP chip 303 and the light emitting component 400, the first light receiving component 510, and the second light receiving component 520, so that the distance for transmitting high-frequency signals between the DSP chip 303 and the light emitting component 400, the first light receiving component 510, and the second light receiving component 520 is relatively short.

[0137] In some embodiments, the mounting hole 302 is disposed at an end of the circuit board 300 , and one end of the mounting hole 302 is open.

[0138] Figure 7 The internal structure of another optical module provided according to some embodiments of the present disclosure is shown in FIG. Figure 1 , Figure 8 The internal structure of another optical module provided according to some embodiments of the present disclosure is shown in FIG. Figure 2 In some embodiments, Figure 7 and Figure 8As shown, the first light receiving component 510 is disposed on the front side of the circuit board 300. Exemplarily, the first light receiving component 510 and the light emitting component 400 are disposed along the width direction of the circuit board 300, and the first light receiving component 510 is located at the side of the light emitting component 400. Of course, in the embodiment of the present disclosure, the first light receiving component 510 is not limited to being disposed at the side of the light emitting component 400, but may also be disposed at one end of the light emitting component 400.

[0139] In some embodiments, the second light receiving component 520 is disposed on the back of the circuit board 300, and the second light receiving component 520 is located on the side of the bottom of the light emitting component 400. Exemplarily, the second light receiving component 520 is disposed in the projection area of ​​the first light receiving component 510 on the back of the circuit board 300; for example, the second light receiving component 520 is symmetrical to the first light receiving component 510.

[0140] In some embodiments, the optical emitting component 400 is used to generate 2N optical signals, the first optical receiving component 510 is used to receive N optical signals, and the second optical receiving component 520 is used to receive N optical signals. Wherein, N ≥ 1, such as N = 4. When N = 4, the optical emitting component 400 is used to generate 8 optical signals, the first optical receiving component 510 is used to receive 4 optical signals, and the second optical receiving component 520 is used to receive 4 optical signals. In the optical module provided in the embodiment of the present disclosure, the optical emitting component 400 is centrally arranged, and the optical receiving component 500 is separately arranged, so as to facilitate the use of the internal space of the optical module.

[0141] In some embodiments, the 2N optical signals generated by the optical emitting component 400 are coupled to an external optical fiber through two optical fibers. After the optical emitting component 400 generates 2N optical signals, N of the optical signals are combined into one beam of light, and the other N optical signals are combined into one beam of light, and the two combined beams of light are then transmitted through the two optical fibers.

[0142] In some embodiments, the 2N optical signals generated by the optical emitting component 400 are coupled to external optical fibers through 2N optical fibers. After the optical emitting component 400 generates the 2N optical signals, the 2N optical signals are transmitted through the 2N optical fibers.

[0143] In some embodiments, four optical signals are transmitted through one optical fiber (the four optical signals are combined into one beam) to the first optical receiving component 510, which first demultiplexes the light into four optical signals and then receives and converts them into electrical signals respectively.

[0144] In some embodiments, four optical signals are transmitted through one optical fiber (the four optical signals are combined into one beam) to the second optical receiving component 520, which first demultiplexes the light into four beams and then receives and converts them into electrical signals respectively.

[0145] In some embodiments, 4 optical signals are transmitted to the first optical receiving component 510 through 4 optical fibers, and the first optical receiving component 510 receives the 4 lights; the 4 optical signals are transmitted to the second optical receiving component 520 through 4 optical fibers, and the second optical receiving component 520 receives the 4 lights.

[0146] Fig. 9 is an exploded schematic diagram of a light emitting component provided according to some embodiments of the present disclosure, Fig.10 FIG. 1 is a partial schematic diagram of a light emitting component provided according to some embodiments of the present disclosure. Fig. 9 and Fig.10 As shown, the light emitting component 400 includes an emitting base 410 and an emitting cover plate 420 . The emitting base 410 is connected to the mounting hole 302 . The bottom of the emitting base 410 faces the bottom plate 2021 . The emitting cover plate 420 covers the emitting base 410 to form an emitting cavity.

[0147] In some embodiments, the light emitting component 400 includes a light emitting assembly 430, which is disposed on the emitting base 410 and is used to generate a light signal. The light emitting assembly 430 can be wired to the front of the circuit board 300, that is, the front of the light emitting assembly 430 can face the upper cover 2011.

[0148] In some embodiments, the light emitting assembly 430 may include multiple lasers 431, so that the light emitting assembly 430 can generate multiple light signals. Exemplarily, the light emitting assembly 430 includes 2N lasers 431, such as 4 lasers 431 or 8 lasers 431.

[0149] In some embodiments, the light emitting component 400 includes a collimating lens group 440, which is disposed on the emitting base 410 and located on the output light path of the light emitting component 430. The collimating lens group 440 is used to collimate the optical signal generated by the light emitting component 430.

[0150] In some embodiments, the collimating lens group 440 may include a plurality of collimating lenses 441, which are correspondingly arranged on the output optical path of the laser 431, and are used to collimate the optical signal generated by the corresponding laser 431. Exemplarily, the collimating lens group 440 includes 4 collimating lenses 441 or 8 collimating lenses 441, etc.

[0151] In some embodiments, the light emitting component 400 may include a combiner group 450, which is disposed on the emitting base 410 and is disposed on the output light path of the light emitting component 430. Exemplarily, a collimating lens group 440 is disposed on the light path between the combiner group 450 and the light emitting component 430, and the combiner group 450 is used to combine multiple collimated lights.

[0152] In some embodiments, the combiner group 450 includes multiple combiners, and one combiner corresponds to the optical signals output by multiple lasers 431. Exemplarily, the right side of the combiner includes four light input ports for incident signal lights of multiple wavelengths, and each light input port is used to incident signal lights of one wavelength; the left side of the combiner includes a light output port for emitting light. Taking the four wavelengths of λ1, λ2, λ3 and λ4 incident on the combiner as an example, the λ1 signal light enters the combiner through the first light input port, and is reflected six times at six different positions in the combiner to reach the light output port; the λ2 signal light enters the combiner through the second light input port, and is reflected four times at four different positions in the combiner to reach the light output port; the λ3 signal light enters the combiner through the third light input port, and is reflected twice at two different positions in the combiner to reach the light output port; the λ4 signal light enters the combiner through the fourth light input port, and is directly transmitted to reach the light output port. In this way, the combiner can realize that signal lights of different wavelengths are input through different light input ports and output through the same light output port, thereby realizing light combining of signal lights of different wavelengths.

[0153] In some embodiments, the combiner group 450 includes a first combiner 451 and a second combiner 452. The first combiner 451 and the second combiner 452 are arranged side by side on the transmitting base 410. The first combiner 451 corresponds to the optical signal output by the four lasers 431, and the second combiner 452 corresponds to the optical signal output by the four lasers 431.

[0154] In some embodiments, the light emitting component 400 may include a converging lens group 460, which is disposed on the emitting base 410 and is located on the output optical path of the combiner group 450. Exemplarily, the converging lens group 460 includes a plurality of converging lenses.

[0155] In some embodiments, the converging lens group 460 includes a first converging lens 461 and a second converging lens 462 . The first converging lens 461 is located on the output light path of the first combiner 451 , and the second converging lens 462 is located on the output light path of the second combiner 452 .

[0156] In some embodiments, the optical emission component 400 may include an optical fiber fixing assembly 470, which is used to connect the optical transmission component 700 to facilitate coupling the optical signal generated by the optical emission component 400 to the optical transmission component 700. The optical fiber fixing assembly 470 includes an optical fiber fixing head, which connects the optical transmission component 700 and the emission base 410 to connect the optical transmission component 700 to the optical emission component 400. Exemplarily, the optical fiber fixing head is connected to the end of the optical fiber in the optical transmission component 700 to protect the end of the optical fiber and to facilitate fixed connection of the end of the optical fiber, so that the optical signal output by the optical emission component 400 is coupled to the optical transmission component 700.

[0157] In some embodiments, the optical fiber fixing head in the optical fiber fixing assembly 470 can fix the ends of one or more optical fibers. For example, the optical fiber fixing head in the optical fiber fixing assembly 470 can fix the ends of 2, 4, or 8 optical fibers.

[0158] In some embodiments, the optical fiber fixing assembly 470 includes a first optical fiber fixing head 471 and a second optical fiber fixing head 472, wherein the first optical fiber fixing head 471 is connected to the other end of the first transmission group 710, and the second optical fiber fixing head 472 is connected to the other end of the first transmission group 710. Exemplarily, the first optical fiber fixing head 471 is connected to the first optical fiber 711a, and the second optical fiber fixing head 472 is connected to the first optical fiber 711b.

[0159] In some embodiments, the light input end of the first optical fiber fixing head 471 is optically connected to the first combiner 451, and the light input end of the second optical fiber fixing head 472 is optically connected to the second combiner 452. Exemplarily, a first converging lens 461 is disposed between the light input end of the first optical fiber fixing head 471 and the light output port of the first combiner 451, and a second converging lens 462 is disposed between the light input end of the second optical fiber fixing head 472 and the light output port of the second combiner 452.

[0160] In some embodiments, the light emitting component 400 may include a thermoelectric cooler (TEC) component 480. The TEC component 480 is disposed on the emitting base 410, and the top of the TEC component 480 supports the light emitting component 430. The TEC component 480 is used to adjust the temperature around the light emitting component 430.

[0161] In some embodiments, the collimating lens assembly 440 may be disposed on the top of the TEC assembly 480. Exemplarily, the collimating lens assembly 440 further includes a supporting plate 442 disposed on the top of the TEC assembly 480, and the supporting plate 442 fixedly supports the collimating lens 441.

[0162] In some embodiments, TEC assembly 480 includes TEC 481 and substrate 482, which is disposed on the top of TEC 481 and fixedly supports light emitting assembly 430. Substrate 482 is used to facilitate the connection between light emitting assembly 430 and TEC 481 and to adjust the height of the top of light emitting assembly 430.

[0163] In some embodiments, the TEC assembly 480 includes a TEC 481 , and the top of the TEC 481 is fixedly supported to support the light emitting assembly 430 .

[0164] Fig.11 is a schematic diagram of the structure of a launching base provided according to some embodiments of the present disclosure, Fig.121 is a cross-sectional view of a light emitting component and a circuit board according to some embodiments of the present disclosure. Fig.11 and Fig.12 As shown, the launching base 410 includes a first mounting surface 411, and the first mounting surface 411 extends from the left side surface of the launching base 410 to the right side surface. When the launching base 410 is embedded in the mounting hole 302, the first mounting surface 411 is bonded to the back side of the circuit board 300, and the side surface of the launching base 410 can be bonded to the back side of the circuit board 300 by solid glue to realize the fixed connection between the launching base 410 and the circuit board 300.

[0165] A mounting groove 412 is formed at one end of the first mounting surface 411, and the mounting surface in the mounting groove 412 is recessed in the first mounting surface 411. The light emitting component 430 is located in the mounting groove 412, so that the relative height between the top of the light emitting component 430 and the front of the circuit board 300 can be adjusted through the mounting groove 412. For example, the top of the light emitting component 430 is aligned with the front of the circuit board 300 through the mounting groove 412.

[0166] In some embodiments, the TEC assembly 480 is located in the mounting groove 412. Exemplarily, the bottom of the TEC 481 is connected to the mounting surface of the mounting groove 412, so that the relative height between the top of the TEC 481 and the front of the circuit board 300 can be adjusted through the mounting groove 412.

[0167] In some embodiments, the transmitting base 410 includes a second mounting surface 413 , which protrudes from the first mounting surface 411 and is located between the mounting slot 412 and the left side of the transmitting base 410 . The combiner group 450 is disposed on the second mounting surface 413 .

[0168] In some embodiments, a glue guide groove 414 is formed on the second mounting surface 413, and the glue guide groove 414 is recessed in the second mounting surface 413. The combiner is placed on the second mounting surface 413, and then glue is injected into the glue guide groove 414 to achieve bonding and fixing of the combiner and the transmitting base 410 through the glue.

[0169] In some embodiments, two glue guiding grooves 414 are formed on the second mounting surface 413 , one of the glue guiding grooves 414 is covered under the first combiner 451 , and the other of the glue guiding grooves 414 is covered under the second combiner 452 .

[0170] In some embodiments, a first baffle plate 415 and a second baffle plate 416 are formed on the first mounting surface 411 of the launch base 410, and the first baffle plate 415 and the second baffle plate 416 extend from the first mounting surface 411 toward the upper housing 201. Exemplarily, the first baffle plate 415 and the second baffle plate 416 are parallel to the two lower side plates 2022 of the lower housing 202, respectively, and the second mounting surface 413 is located between the first baffle plate 415 and the second baffle plate 416.

[0171] In some embodiments, in the width direction of the launching base 410, the distance between the first baffle 415 and the second baffle 4165 is smaller than the width dimension of the launching base 410, there is a certain distance between the first baffle 415 and the side of the launching base 410 facing a lower side plate 2022, and there is a certain distance between the second baffle 416 and the side of the launching base 410 facing the other lower side plate 2022.

[0172] When the launching base 410 is embedded in the mounting hole 302, the first mounting surface 411 abuts against the back side of the circuit board 300, the first baffle 415 and the second baffle 416 are located in the mounting hole 302, the first baffle 415 abuts against the rear side surface of the mounting hole 302, and the second baffle 416 abuts against the front side surface of the mounting hole 302, so as to limit the launching base 410 by the first baffle 415 and the second baffle 416.

[0173] In some embodiments, two glue guide grooves 414 are formed on the second mounting surface 413. One glue guide groove 414 is formed with an opening on one side of the first baffle plate 415 (the rear side of the first baffle plate 415), and there is a gap between the glue guide groove 414 and the first baffle plate 415, through which glue can be injected into the glue guide groove 414, and the amount of glue in the glue guide groove 414 can be balanced through the gap. The other glue guide groove 414 is formed with an opening on one side of the second baffle plate 416 (the front side of the second baffle plate 416), and there is a gap between the glue guide groove 414 and the second baffle plate 416, through which glue can be injected into the glue guide groove 414, and the amount of glue in the glue guide groove 414 can be balanced through the gap.

[0174] In some embodiments, the rear side of the first combiner 451 abuts against the first baffle 415 to limit the combiner through the first baffle 415 ; the front side of the second combiner 452 abuts against the second baffle 416 to limit the combiner through the second baffle 416 .

[0175] In some embodiments, in order to improve the heat dissipation efficiency, a heat conductor 4101 is provided on the bottom surface of the launching base 410 (the bottom plate 2021 facing the lower shell 202), and the launching base 410 is in contact with the bottom plate 2021 through the heat conductor 4101. The launching base 410 conducts heat to the heat conductor 4101, and the heat is conducted to the lower shell 202 via the heat conductor 4101, so as to improve the heat dissipation efficiency of the launching base 410 through the heat conductor 4101.

[0176] In some embodiments, a mounting platform 417 is formed at one end of the first mounting surface 411 (the left end in the figure), and the mounting platform 417 extends from the first mounting surface 411 toward the upper shell 201. In the width direction of the launching base 410, the width dimension of the mounting platform 417 is smaller than the width dimension of the launching base 410, and the width dimension of the mounting platform 417 is smaller than the distance between the first baffle 415 and the second baffle 416. The distance between the rear side surface of the mounting platform 417 and the rear side surface of the mounting hole 302 is the first width, and the distance between the front side surface of the mounting platform 417 and the front side surface of the mounting hole 302 is the second width. The first width and the second width may be the same.

[0177] In some embodiments, due to the coupling connection between the optical combiner and the optical fiber coupler, the first width and the second width may be different. For example, when the light outlet of the optical combiner is close to the first baffle 415, the first width is smaller than the second width.

[0178] In some embodiments, the mounting platform 417 is formed with a first through hole 4171 and a second through hole 4172, and the first through hole 4171 and the second through hole 4172 penetrate the mounting platform 417 in the left-right direction. The first optical fiber fixing head 471 is inserted into the first through hole 4171, and the second optical fiber fixing head 472 is inserted into the second through hole 4172. Of course, in some embodiments, the top of the mounting platform 417 can directly support and connect the first optical fiber fixing head 471 and the second optical fiber fixing head 472.

[0179] Due to the difference in transmission media, the composite light is easily reflected at the fiber end face in the fiber coupler. Most of the composite light is emitted into the fiber, and a small part of the composite light is reflected at the fiber end face. The reflected composite light may return to the laser along the original path, affecting the light-emitting performance of the laser.

[0180] In order to prevent the reflected light from returning to the laser along the original path, a fiber optic ferrule 4711 and an isolator 4712 are provided in the first fiber optic fixing head 471. The fiber optic ferrule 4711 is used to fix the end of the first optical fiber 711a, and the isolator 4712 is located at one end of the first optical fiber fixing head 471 facing the first converging lens 461. The optical signal output by the first combiner 451 is converged into the first optical fiber fixing head 471 through the first converging lens 461, passes through the isolator 4712 and is coupled to the first optical fiber 711a. When the optical signal is reflected at the end face of the first optical fiber 711a, the reflected optical signal will be isolated by the isolator 4712 and cannot pass through the isolator 4712. In this way, the reflected light cannot return to the laser, thereby ensuring the light-emitting performance of the laser.

[0181] In some embodiments, the structure of the second optical fiber fixing head 472 may refer to the structure of the first optical fiber fixing head 471 .

[0182] Fig.13is an exploded schematic diagram of another light emitting component provided according to some embodiments of the present disclosure, Fig.14 FIG. 1 is a partial schematic diagram of another light emitting component provided according to some embodiments of the present disclosure. Fig.13 and Fig.14 As shown, the transmitting base 410 may include a third mounting surface 418 , which is located at one end of the transmitting base 410 close to the optical port; the third mounting surface 418 supports and connects the first optical fiber fixing head 471 and the second optical fiber fixing head 472 .

[0183] In some embodiments, the mounting platform 417 may be disposed on the third mounting surface 418, and the mounting platform 417 is located between the output optical path of the first combiner 451 and the output optical path of the second combiner 452. The rear side surface of the mounting platform 417 is limitedly connected to the side surface of the first optical fiber fixing head 471, and the front side surface of the mounting platform 417 is limitedly connected to the second optical fiber fixing head 472. This can facilitate the assembly of the first optical fiber fixing head 471 and the second optical fiber fixing head 472, and can also facilitate the disassembly of the first optical fiber fixing head 471 and the second optical fiber fixing head 472, thereby reducing disassembly damage.

[0184] In some embodiments, the transmitting base 410 may include a fourth mounting surface 419, which is located on a side of the second mounting surface 413 close to the third mounting surface 418, and a gap is formed between the fourth mounting surface 419 and the third mounting surface 418. The light input ends of the first optical fiber fixing head 471 and the second optical fiber fixing head 472 extend above the gap, and the gap is convenient for reducing the assembly interference of the first optical fiber fixing head 471 and the second optical fiber fixing head 472, and ensuring the assembly accuracy of the first optical fiber fixing head 471 and the second optical fiber fixing head 472.

[0185] In some embodiments, the fourth mounting surface 419 is higher than the third mounting surface 418, and a step surface 4191 is formed on the side of the fourth mounting surface 419 close to the third mounting surface 418, and the step surface 4191 is located at the edge of the gap between the fourth mounting surface 419 and the third mounting surface 418. The bottom of the light-incoming end of the first optical fiber fixing head 471 and the bottom of the light-incoming end of the second optical fiber fixing head 472 abut against the step surface 4191. The step surface 4191 is used for assembly limiting of the first optical fiber fixing head 471 and the second optical fiber fixing head 472.

[0186] In some embodiments, the outer contours of the first optical fiber fixing head 471 and the second optical fiber fixing head 472 are square, that is, there are multiple planes on the first optical fiber fixing head 471 and the second optical fiber fixing head 472, through which the transmitting base 410 is assembled and connected.

[0187] In some embodiments, the light emitting assembly 430 includes 8 lasers 431, the collimating lens group 440 includes 8 collimating lenses 441, the combiner group 450 includes a first combiner 451 and a second combiner 452, the converging lens group 460 includes a first converging lens 461 and a second converging lens 462, and the first optical fiber 711 includes a first optical fiber 711a and a first optical fiber 711b. The 8 lasers 431 generate 8 optical signals, which are converted into 8 collimated lights through the 8 collimating lenses 441. Among them, 4 collimated lights are transmitted to the first combiner 451, synthesized into one beam through the first combiner 451 and transmitted to the first converging lens 461, and then converged and transmitted to the first optical fiber 711a through the first converging lens 461, so that one optical fiber can transmit four optical signals. The other four collimated lights are transmitted to the second combiner 452 , combined into one beam by the second combiner 452 and transmitted to the second converging lens 462 , converged by the second converging lens 462 and transmitted to the first optical fiber 711 b , so that one optical fiber can transmit four optical signals.

[0188] Fig.15 The structure of a transmitting cover plate provided according to some embodiments of the present disclosure is schematically shown. Fig.16 FIG. 1 is a diagram of a use state of a launch cover provided according to some embodiments of the present disclosure. Fig.15 and Fig.16 As shown, the transmitting cover plate 420 includes a top plate 4200, a first side plate 4201, a second side plate 4202, a third side plate 4203, a fourth side plate 4204, a fifth side plate 4205, a sixth side plate 4207 and a seventh side plate 4208, and the first side plate 4201, the second side plate 4202, the third side plate 4203, the fourth side plate 4204, the fifth side plate 4205, the sixth side plate 4207 and the seventh side plate 4208 are respectively fixedly connected to the inner side surface of the top plate 4200. In some embodiments, the outer side surface of the top plate 4200 contacts the upper cover plate 2011, and the bottoms of the first side plate 4201, the second side plate 4202 and the third side plate 4203 are respectively connected to the front surface of the circuit board 300.

[0189] The second side panel 4202 is located on the right side of the launch cover plate 420, and an opening is formed on the left side of the launch cover plate 420, the first side panel 4201 and the third side panel 4203 are arranged opposite to each other, the fifth side panel 4205 and the sixth side panel 4207 are arranged opposite to each other, the first side panel 4201 and the sixth side panel 4207 are located on the same side, the third side panel 4203 and the fifth side panel 4205 are located on the same side, the fifth side panel 4205 and the sixth side panel 4207 are located on the left side of the launch cover plate 420, and both ends of the second side panel 4202 are respectively connected to the first side panel 4201 and the third side panel 4203, and the distance between the first side panel 4201 and the third side panel 4203 is greater than the distance between the fifth side panel 4205 and the sixth side panel 4207.

[0190] In some embodiments, when the first width between the mounting platform 4016 and the mounting hole 302 is smaller than the second width, the first side panel 4201 is connected to the sixth side panel 4207 through the seventh side panel 4208, and the seventh side panel 4208 is parallel to the second side panel 4202, so that the first side panel 4201 protrudes from the sixth side panel 4207; the third side panel 4203 is connected to the fifth side panel 4205 through the fourth side panel 4204, and the fourth side panel 4204 is inclined so that the third side panel 4203 protrudes from the fifth side panel 4205.

[0191] In some embodiments, when the launch cover 420 is covered on the launch base 410, the inner side surface of the top plate 4200 contacts the top surface of the mounting platform 417, and the first side plate 4201, the second side plate 4202, the third side plate 4203, the fourth side plate 4204, the fifth side plate 4205, the sixth side plate 4207 and the seventh side plate 4208 are connected to the front support of the circuit board 300 to fix and support the launch cover 420 through the circuit board 300.

[0192] Fig.17 is a schematic structural diagram of another transmitting cover plate provided according to some embodiments of the present disclosure, Fig.18 FIG. 1 is a schematic diagram of another use state of a launch cover according to some embodiments of the present disclosure. Fig.17 and Fig.18 As shown, the launch cover plate 420 includes a top plate 4200, an eighth side plate 4209, a ninth side plate 4210, a tenth side plate 4211, an eleventh side plate 4212, a twelfth side plate 4213 and a thirteenth side plate 4214. The tops of the eighth side plate 4209, the ninth side plate 4210, the tenth side plate 4211, the eleventh side plate 4212, the twelfth side plate 4213 and the thirteenth side plate 4214 are respectively fixedly connected to the inner side surface of the top plate 4200. A first spacer 4215 is formed between the eleventh side plate 4212 and the twelfth side plate 4213, and a second spacer 4216 is formed between the twelfth side plate 4213 and the thirteenth side plate 4214.

[0193] In some embodiments, the heights of the eleventh side panel 4212, the twelfth side panel 4213, and the thirteenth side panel 4214 are greater than the height of the eighth side panel 4209, and the heights of the ninth side panel 4210 and the tenth side panel 4211 are equal to the height of the eighth side panel 4209. Exemplarily, the bottoms of the eleventh side panel 4212, the twelfth side panel 4213, and the thirteenth side panel 4214 are flush, and the bottoms of the eighth side panel 4209, the ninth side panel 4210, and the tenth side panel 4211 are flush.

[0194] In some embodiments, when the launch cover plate 420 is covered on the launch base 410, the first spacer 4215 is assembled and connected to the first optical fiber fixing head 471, the second spacer 4216 is assembled and connected to the second optical fiber fixing head 472, and the side of the mounting platform 417 is limitedly connected to the twelfth side plate 4213. The launch base 410 can be assembled with the limited launch cover plate 420 through the mounting platform 417, so as to reduce the launch cover plate 420 from touching the device in the launch cavity when assembling the launch cover plate 420. The front support of the circuit board 300 is connected to the bottom of the eighth side plate 4209, the ninth side plate 4210 and the tenth side plate 4211.

[0195] Fig.19 is a partial schematic diagram of another light emitting component provided according to some embodiments of the present disclosure, Fig. 20 FIG. 1 is a schematic diagram of assembling another light emitting component and a circuit board according to some embodiments of the present disclosure. Fig.19 and Fig. 20 As shown, the optical fiber fixing assembly 470 includes a third optical fiber fixing head 473, which is disposed on the transmitting base 410; the third optical fiber fixing head 473 is fixedly connected to the optical transmission assembly 700. The third optical fiber fixing head 473 is located on the output optical path of the light emitting assembly 430, and the third optical fiber fixing head 473 is used to fix the end of the optical transmission assembly 700 on the output optical path of the light emitting assembly 430, so as to facilitate coupling the optical signal generated by the light emitting assembly 430 to the first transmission group 710.

[0196] In some embodiments, the bottom of the third optical fiber fixing head 473 is fixedly connected to the transmitting base 410, and the middle of the third optical fiber fixing head 473 is connected to the end of the first optical fiber 711, and the first optical fiber 711 is horizontally passed through the third optical fiber fixing head 473. Exemplarily, the first optical fiber 711 includes multiple optical fibers, and the multiple optical signals generated by the light emitting component 430 are correspondingly coupled to the corresponding first optical fibers 711, so that the first transmission group 710 can transmit multiple optical signals. For example, the first optical fiber 711 includes 4 optical fibers or 8 optical fibers.

[0197] In some embodiments, the light reflecting component 400 may include an isolator group 490, which is disposed on the light incident side of the third optical fiber fixing head 473; the isolator group 490 is used to isolate the optical signal reflected back by the optical fiber end face in the first optical fiber 711. Exemplarily, the isolator group 490 includes a plurality of isolators 491, which are located on the side of the third optical fiber fixing head 473, and the transmitting base supports and connects the isolators 491, and the isolators 491 are correspondingly disposed in the direction of the light incident axis of the first optical fiber 711.

[0198] In some embodiments, the isolator group 490 is disposed on the transmission optical path from the collimating lens group 440 to the third optical fiber fixing head 473. The optical signal collimated by the collimating lens group 440 passes through the isolator group 490 and is coupled to the first optical fiber 711 after passing through the isolator group 490. Exemplarily, the optical axis of the collimating lens 441 is coaxial with the optical axis of the first optical fiber 711, and the isolator 491 is located on the optical axis of the corresponding collimating lens 441.

[0199] In some embodiments, the isolator 491 is fixedly connected to the right side surface of the third optical fiber fixing head 473 , and the right side surface of the third optical fiber fixing head 473 is the side surface of the third optical fiber fixing head 473 facing the light emitting assembly 430 .

[0200] In some embodiments, the light emitting component 430 generates multiple light signals, which are transmitted to the collimating lenses 441 in the collimating lens group 440 and are transmitted to the isolator group 490 after being collimated by the corresponding collimating lenses 441, and are coupled to the optical fiber of the optical transmission component 700 through the isolator group 490.

[0201] Fig.21 FIG. 1 is a schematic diagram of the structure of another transmitting base provided according to some embodiments of the present disclosure. Fig.21 As shown, a relief groove 4131 is provided on the left side of the second mounting surface 413, the side of the relief groove 4131 extends to the left end surface of the launch base 410, the front end of the relief groove 4131 extends to the first baffle 415, and the rear end of the relief groove 4131 extends to the second baffle 416. The second mounting surface 413 supports and connects the third optical fiber fixing head 473, and the relief groove 4131 avoids the third optical fiber fixing head 473 to facilitate the assembly and connection between the third optical fiber fixing head 473 and the launch base 410.

[0202] In some embodiments, a pillar array is disposed at the right edge of the second mounting surface 413, and the pillar array extends from the front of the second mounting surface 413 to the rear of the second mounting surface 413. The pillar array includes a plurality of pillars, and there are intervals between adjacent pillars. The isolators 491 in the isolator group 490 are correspondingly disposed in the corresponding intervals, and the side walls of the pillars can support and connect the isolators 491.

[0203] In some embodiments, the front side of the first baffle 415 includes an assembly positioning surface 4151, and the assembly positioning surface 4151 is formed by the front side of the first baffle 415 protruding toward the second baffle 416, and the extension length of the assembly positioning surface 4151 is less than the rear side of the first baffle 415. Exemplarily, the assembly positioning surface 4151 is located in the middle of the front side of the first baffle 415 to form a convex structure on the front side of the first baffle. In this way, the assembly positioning surface 4151 can not only assemble and position the third optical fiber fixing head 473, but also reduce the assembly obstruction of the third optical fiber fixing head 473. When the third optical fiber fixing head 473 is fixed on the transmitting base 410, the rear side of the third optical fiber fixing head 473 is close to the assembly positioning surface 4151.

[0204] In some embodiments, the rear side surface of the second baffle 416 may include an assembly positioning surface, through which the third optical fiber fixing head 473 is assembled and positioned.

[0205] Fig. 22 is a schematic structural diagram of a third optical fiber fixing head provided according to some embodiments of the present disclosure, Fig.23 FIG. 4 is a cross-sectional view of a third optical fiber fixing head provided according to some embodiments of the present disclosure. Fig. 22 and Fig.23 As shown, the third optical fiber fixing head 473 includes an optical fiber support plate 4731 and an optical fiber cover plate 4732, and the optical fiber cover plate 4732 covers and connects the optical fiber support plate 4731, so that the optical fiber cover plate 4732 and the optical fiber support plate 4731 are fixedly connected to the end of the first optical fiber 711. Exemplarily, the optical fiber support plate 4731 supports and connects the end of the first optical fiber 711, and the end of the first optical fiber 711 extends from one end of the optical fiber support plate 4731 to the other end of the optical fiber support plate 4731. When the optical fiber cover plate 4732 covers and connects the optical fiber support plate 4731, the light input end of the end face of the first optical fiber 711 is unobstructed, so that the optical signal generated by the light emitting component 430 can be transmitted to the end face of the first optical fiber 711, and coupled to the first optical fiber 711 through the end face of the first optical fiber 711.

[0206] In some embodiments, Fig. 22 In the direction shown, the left end of the optical fiber support plate 4731 is flush with the left end of the optical fiber cover plate 4732. Of course, in the embodiment of the present disclosure, the left end of the optical fiber cover plate 4732 may also exceed the left end of the optical fiber support plate 4731, that is, the length of the left end of the optical fiber cover plate 4732 is greater than the length of the left end of the optical fiber support plate 4731. When the left end of the optical fiber cover plate 4732 exceeds the left end of the optical fiber support plate 4731, the optical fiber cover plate 4732 effectively reduces the transition bending of the first optical fiber 711 toward the top direction of the third optical fiber fixing head 473, which helps to protect the first optical fiber 711.

[0207] In some embodiments, the first optical fiber 711 includes multiple optical fibers, such as 2, 4, 8, etc.

[0208] In some embodiments, the optical fiber support plate 4731 is an integral structure, and the optical fiber cover plate 4732 is an integral structure. Of course, in some embodiments, the optical fiber support plate 4731 may include multiple support plates, and the optical fiber cover plate 4732 may include multiple cover plates to form a third optical fiber fixing head 473 including multiple splits. Each split fixes a number of optical fibers, such as each split fixes 2 or 4 optical fibers. This makes it convenient to couple and fix the third optical fiber fixing head 473, so as to ensure the coupling efficiency of the optical signal to the first optical fiber 711.

[0209] Fig.24 FIG. 1 is a cross-sectional view of another light emitting component and a circuit board according to some embodiments of the present disclosure. Fig.24 As shown, in some embodiments, the right end of the third optical fiber fixing head 473 is formed with an inclined surface 4733, and the inclined surface 4733 is not perpendicular to the top surface of the third optical fiber fixing head 473. The inclined angle of the inclined surface 4733 can be 2-7 degrees. The isolator 491 is fixedly connected to the inclined surface 4733, so that the isolator 491 is tiltedly arranged on the optical path from the collimating lens 441 to the first optical fiber 711, which helps to ensure the isolation effect of the isolator 491.

[0210] In some embodiments, the light emitting assembly 430 includes 8 lasers 431, the collimating lens group 440 includes 8 collimating lenses 441, the isolator group 490 includes 8 isolators, and the first optical fiber 711 includes 8 optical fibers. The 8 lasers 431 generate 8 optical signals, which are converted into 8 collimated lights through 8 collimating lenses 441. The 8 collimated lights are directly emitted into 8 optical fibers through 8 isolators 491, so that one optical fiber transmits one optical signal.

[0211] Fig.25 is a schematic structural diagram of another transmitting cover plate provided according to some embodiments of the present disclosure, Fig.26 FIG. 1 is a diagram of another use state of a launch cover provided according to some embodiments of the present disclosure. Fig.25 and Fig.26 As shown, the launch cover plate 420 includes a top plate 4200, an eighth side plate 4209, a ninth side plate 4210, a tenth side plate 4211, an eleventh side plate 4212, and a thirteenth side plate 4214. The tops of the eighth side plate 4209, the ninth side plate 4210, the tenth side plate 4211, the eleventh side plate 4212, and the thirteenth side plate 4214 are respectively fixedly connected to the inner side surface of the top plate 4200. A notch 4217 is formed between the eleventh side plate 4212 and the thirteenth side plate 4214. In some embodiments, the notch 4217 extends to the top plate 4200.

[0212] In some embodiments, the bottoms of the eighth side panel 4209 , the ninth side panel 4210 , the tenth side panel 4211 , the eleventh side panel 4212 , and the thirteenth side panel 4214 are flush.

[0213] In some embodiments, a first buckle 4218 is disposed at the bottom of the eleventh side plate 4212, and the first buckle 4218 is located at the edge of the notch 4217. The first buckle 4218 is used to assemble the launch cover 420 to connect with the launch base 410.

[0214] In some embodiments, a second buckle 4219 is disposed at the bottom of the thirteenth side plate 4214, and the second buckle 4219 is located at the edge of the notch 4217. The second buckle 4219 is used to assemble and connect the launch cover 420 to the launch base 410.

[0215] In some embodiments, when the launch cover plate 420 is covered on the launch base 410, the first optical fiber 711 passes through the notch 4217, the first buckle 4218 abuts against the left side of the first baffle 415, and the second buckle 4219 abuts against the left side of the second baffle 416. The first buckle 4218 and the second buckle 4219 are used for the limited connection between the launch cover plate 420 and the launch base 410.

[0216] Fig. 27 is a partial schematic diagram of another transmitting component provided according to some embodiments of the present disclosure, Fig.28 FIG. 1 is a schematic diagram of assembling another transmitting component and a circuit board according to some embodiments of the present disclosure. Fig. 27 and Fig.28 As shown, the optical fiber fixing assembly 470 includes a third optical fiber fixing head 473a and a third optical fiber fixing head 473b, which are arranged side by side on the transmitting base 410; the third optical fiber fixing head 473a and the third optical fiber fixing head 473b are respectively fixedly connected to the optical transmission assembly 700. The third optical fiber fixing head 473a and the third optical fiber fixing head 473b are respectively located on the output optical path of the light emitting assembly 430, and the third optical fiber fixing head 473a and the third optical fiber fixing head 473b are used to fix the end of the optical transmission assembly 700 on the output optical path of the light emitting assembly 430, so as to facilitate coupling the optical signal generated by the light emitting assembly 430 to the first transmission group 710.

[0217] In some embodiments, the third optical fiber fixing head 473a is fixedly connected to four optical fibers in the first optical fiber 711, and the third optical fiber fixing head 473b is fixedly connected to the other four optical fibers in the first optical fiber 711. The light emitting assembly 430 includes eight lasers 431, and the optical signals generated by the four lasers 431 are coupled to the optical fibers fixed by the third optical fiber fixing head 473a, and the optical signals generated by the other four lasers 431 are coupled to the optical fibers fixed by the third optical fiber fixing head 473b.

[0218] In some embodiments, the isolator group 490 may include a first isolator bracket 492 and a second isolator bracket 493. The first isolator bracket 492 is disposed at the light input end of the third optical fiber fixing head 473a, and the second isolator bracket 493 is disposed at the light input end of the third optical fiber fixing head 473b. A plurality of isolators 491 are disposed on the first isolator bracket 492, and the first isolator bracket 492 fixes and supports the isolators 491. A plurality of isolators 491 are disposed on the second isolator bracket 493, and the second isolator bracket 493 fixes and supports the isolators 491.

[0219] In some embodiments, the first isolator bracket 492 fixedly supports four isolators 491, and the second isolator bracket 493 fixedly supports four isolators 491. The optical signals generated by the four lasers 431 are coupled to the optical fiber fixed by the third optical fiber fixing head 473a through the isolators 491 on the first isolator bracket 492, and the optical signals generated by the other four lasers 431 are coupled to the optical fiber fixed by the third optical fiber fixing head 473b through the isolators 491 on the second isolator bracket 493. The first isolator bracket 492 and the second isolator bracket 493 are fixed on the transmitting base 410.

[0220] Fig.29 is a schematic diagram of the structure of another launching base provided according to some embodiments of the present disclosure, Fig.30 FIG. 1 is a cross-sectional view of another light emitting component and a circuit board according to some embodiments of the present disclosure. Fig.29 and Fig.30 As shown, a first support platform 4133 is disposed on the second mounting surface 413 and is located at the edge of the second mounting surface 413 . The first support platform 4133 is formed by the second mounting surface 413 protruding toward the direction of the upper cover plate 2011 . The first support platform 4133 may be located at the edge of the mounting groove 412 .

[0221] In some embodiments, a first limiting column 4134 is disposed at the edge of the first support platform 4133, the top surface position of the first limiting column 4134 is higher than the top surface position of the first support platform 4133, and the right side of the first limiting column 4134 is limitedly connected to the first isolator bracket 492. Exemplarily, the first limiting column 4134 is disposed on the first support platform 4133 and is disposed at the edge of the top surface of the first support platform 4133.

[0222] In some embodiments, a second limiting column 4135 is disposed at the edge of the first support platform 4133, the top surface position of the second limiting column 4135 is higher than the top surface position of the first support platform 4133, and the side surface of the second limiting column 4135 is limitedly connected to the second isolator bracket 493. Exemplarily, the second limiting column 4135 is disposed on the first support platform 4133 and is disposed at the edge of the top surface of the first support platform 4133.

[0223] In some embodiments, the right end face of the third optical fiber fixing head 473a abuts against the first limiting column 4134 to limit the third optical fiber fixing head 473a through the left side face of the first limiting column 4134; the right end face of the third optical fiber fixing head 473b abuts against the second limiting column 4135 to limit the third optical fiber fixing head 473b through the left side face of the second limiting column 4135.

[0224] In some embodiments, there is a gap between the second limiting column 4135 and the first limiting column 4134. Of course, in some embodiments, the rear side of the second limiting column 4135 and the front side of the first limiting column 4134 can be connected.

[0225] In some embodiments, a plurality of second support platforms 4136 are provided on the second mounting surface 413, and the second support platforms 4136 support and connect the third optical fiber fixing head 473. Exemplarily, the second support platforms 4136 can be connected to the third optical fiber fixing head 473 by glue. There is a gap between adjacent second support platforms 4136, and when the third optical fiber fixing head 473 is fixed by glue, the glue can be dispensed into the gap, and the gap can also be used to store overflow glue.

[0226] In some embodiments, the top surface of the second support platform 4136 is lower than the top surface of the first limiting column 4134 , and the top surface of the second support platform 4136 is lower than the top surface of the second limiting column 4135 .

[0227] In some embodiments, the plurality of second support platforms 4136 are arranged in two rows along the length direction of the optical module, with a gap between the two rows of second support platforms 4136; each row of second support platforms 4136 includes a plurality of second support platforms 4136, with a gap between adjacent second support platforms 4136. Exemplarily, the second support platforms 4136 in the left row are located at the left edge of the second mounting surface 413.

[0228] In some embodiments, the first baffle 415 is positioned and connected to the third optical fiber fixing head 473a, and the second baffle 416 is positioned and connected to the third optical fiber fixing head 473b. Exemplarily, the first baffle 415 is fixedly connected to the third optical fiber fixing head 473a by fixing glue, and the second baffle 416 is fixedly connected to the third optical fiber fixing head 473b by fixing glue.

[0229] In some embodiments, two substrates 482 (substrate 482a and substrate 482b) are disposed on the TEC 481, four lasers 431 and four collimating lenses 441 are disposed on one substrate 482a, and another four lasers 431 and four collimating lenses 441 are disposed on another substrate 482b.

[0230] Fig.31 is a schematic structural diagram of another transmitting cover plate provided according to some embodiments of the present disclosure, Fig.32 FIG. 1 is a diagram of another use state of a launch cover provided according to some embodiments of the present disclosure. Fig.31 and Fig.32 As shown, at the edge of the notch 4217, a first notch 4212a is formed on the eleventh side plate 4212, and a second notch 4214a is formed on the thirteenth side plate 4214.

[0231] In some embodiments, when the transmitting cover plate 420 is covered on the transmitting base 410, the transmitting cover plate 420 covers part of the third optical fiber fixing head 473a and the third optical fiber fixing head 473b, the third optical fiber fixing head 473a and the third optical fiber fixing head 473b span the notch 4217, and the ends of the third optical fiber fixing head 473a and the third optical fiber fixing head 473b away from the light-emitting component 430 are located outside the notch 4217.

[0232] In some embodiments, the first notch 4212 a avoids the first baffle 415 , and the second notch 4214 a avoids the second baffle 416 .

[0233] Fig.33 is a partially exploded schematic diagram of a first light receiving component provided according to some embodiments of the present disclosure, Fig.34 is a partial structural schematic diagram of a first light receiving component provided according to some embodiments of the present disclosure, Fig.33 and Fig.34 Schematic diagram of a structure of a first light receiving component 510. In some embodiments, Fig.33 and Fig.34 As shown, the first light receiving component 510 includes an optical collimator 511, an optical splitter 512, a detector group 304 and a transimpedance amplifier group 305. The detector group 304 and the transimpedance amplifier group 305 are arranged on the circuit board 300. The light output end of the optical collimator 511 is connected to the light input end of the optical splitter 512; the output end face of the optical splitter 512 is a reflection surface, which is inclined, and the reflection surface of the optical splitter 512 is located directly above the detector group 304. Exemplarily, the detector group 304 includes a plurality of detectors, such as the detector group 304 includes N detectors, for receiving N optical signals.

[0234] In some embodiments, the detector group 304 and the transimpedance amplifier group 305 may be directly disposed on the circuit board 300. Of course, in the embodiment of the present disclosure, a substrate may be disposed on the circuit board 300, and the detector group 304 may be disposed on the substrate, so that the height of the photosensitive surface of the detector in the detector group 304 is adjusted through the substrate, and then the distance between the photosensitive surface of the detector and the output end face of the optical splitter 512 is adjusted through the substrate.

[0235] In some embodiments, the optical collimator 511 includes a single-mode fiber flange and a collimator. The optical fiber in the optical transmission component 700 is inserted into the optical collimator 511 through the single-mode fiber flange. The optical collimator 511 is arranged on the light-emitting surface of the internal optical fiber. The optical collimator 511 is used to convert the external light transmitted by the internal optical fiber into collimated light. Exemplarily, the second optical fiber 721 is inserted into the optical collimator 511 through the single-mode fiber flange.

[0236] In some embodiments, the second optical fiber 721 may include an optical fiber, and a beam of composite light input from an external optical fiber is transmitted to the optical collimator 511 through the second optical fiber 721, and then transmitted to the optical splitter 512 through the optical collimator 511. One path of composite light is demultiplexed into multi-path split light through the optical splitter 512, and the multi-path split light is reflected at the reflection surface of the optical splitter 512, reflecting the light beam with an optical axis parallel to the circuit board 300 into a light beam with an optical axis perpendicular to the circuit board 300, so that the reflected light beam is projected into the detector group 304 to achieve light reception.

[0237] In some embodiments, the first light receiving component 510 may include a converging lens 515, which is disposed on the reflected light path of the optical splitter 512. The split light reflected by the reflection surface of the optical splitter 512 is converged to the detector through the converging lens 515, so as to ensure the receiving performance of the detector through the converging lens 515.

[0238] In some embodiments, the converging lens 515 is disposed on the optical splitter 512. Exemplarily, the top of the converging lens 515 is connected to the bottom of the optical splitter 512. Of course, the converging lens 515 can be directly disposed on the detector group 304.

[0239] After the detector in the detector group 304 receives the light beam reflected by the optical splitter 512, the detector converts the optical signal into an electrical signal, which is transmitted to the transimpedance amplifier group 305 via bonding wires. After being amplified by the transimpedance amplifier, the electrical signal is transmitted to the gold finger 301 via the signal line. The amplified electrical signal is transmitted to the host computer via the gold finger 301, thereby realizing the reception of multi-path light.

[0240] In some embodiments, when the split light reflected by the output end face of the optical splitter 512 is incident on the detector, due to the difference in transmission media, the split light may be reflected at the photosensitive surface of the detector, and the reflected light may return to the optical splitter 512 along the original path. The reflected light returns to the optical collimator 511 via the optical splitter 512, causing crosstalk between the reflected light and the composite light transmitted by the internal optical fiber in the optical collimator 511.

[0241] In order to avoid optical signal crosstalk, the first light receiving component 510 further includes a support plate 513, the bottom surface of the support plate 513 is mounted on the back of the circuit board 300, the top surface of the support plate 513 is tilted, and the optical splitter 512 is mounted on the top surface of the support plate 513, so that the optical splitter 512 is tilted, that is, along the left and right direction (light receiving direction), the distance between the optical splitter 512 and the back of the circuit board 300 gradually decreases. In this way, the light reflected at the photosensitive surface of the detector returns to the reflection surface of the optical splitter 512, and the reflected light is reflected again at the reflection surface. Since the optical splitter 512 is tilted, the light reflected at the reflection surface is set at a certain angle with the received light transmitted by the optical splitter 512, thereby avoiding crosstalk between the reflected light and the received light.

[0242] In some embodiments, the optical splitter 512 may use an optical splitter device based on arrayed waveguide grating (AWG) technology to achieve optical splitting and coupling effects, and the tilt angle between the optical splitter 512 and the circuit board 300 is 2°.

[0243] In some embodiments, the first light receiving component 510 may include a receiving shell 514, which is covered on the back side of the circuit board 300. A cavity is formed between the receiving shell 514 and the back side of the circuit board 300. Part of the optical splitter 512, the detector group 304 and the transimpedance amplifier group 305 are located in the cavity to protect the detector group 304 and the transimpedance amplifier group 305 through the receiving shell 514.

[0244] Fig.35 Schematic diagram of a receiving housing according to some embodiments of the present disclosure. Fig.35As shown, the receiving shell 514 includes a receiving cover plate 5140, a first receiving side plate 5141, a second receiving side plate 5142 and a third receiving side plate 5143. The outer side of the receiving cover plate 5140 faces the lower shell 202. The first receiving side plate 5141, the second receiving side plate 5142 and the third receiving side plate 5143 are respectively fixedly connected to the receiving cover plate 5140. The second receiving side plate 5142 is the right side of the receiving shell 514. The two ends of the second receiving side plate 5142 are respectively fixedly connected to the first receiving side plate 5141 and the third receiving side plate 5143. The first receiving side plate 5141 and the third receiving side plate 5143 are arranged opposite to each other. In this way, the receiving cover plate 5140, the first receiving side plate 5141, the second receiving side plate 5142 and the third receiving side plate 5143 form a shell with an upper side and a left side opening.

[0245] When the receiving shell 514 is buckled onto the back side of the circuit board 300, the first receiving side plate 5141, the second receiving side plate 5142 and the third receiving side plate 5143 are supported and connected to the back side of the circuit board 300. The first receiving side plate 5141, the second receiving side plate 5142 and the third receiving side plate 5143 are respectively bonded to the back side of the circuit board 300 by solid glue to achieve a fixed connection between the receiving shell 514 and the circuit board 300.

[0246] In some embodiments, a first positioning claw 5144 is formed on the first receiving side plate 5141, and the first positioning claw 5144 extends from the inner side of the first receiving side plate 5141 toward the third receiving side plate 5143, and the left side of the first positioning claw 5144 is flush with the left side of the first receiving side plate 5141. The first positioning claw 5144 is used to receive the housing 514 to position and connect the circuit board 300.

[0247] In some embodiments, a second positioning claw 5145 is formed on the third receiving side plate 5143, and the second positioning claw 5145 extends from the inner side of the third receiving side plate 5143 toward the first receiving side plate 5141, and the left side of the second positioning claw 5145 is flush with the left side of the third receiving side plate 5143. The second positioning claw 5145 is used to receive the housing 514 to position and connect the circuit board 300.

[0248] The receiving shell 514 is buckled on the circuit board 300, and the reflecting surface of the optical splitter 512, the converging lens 515, the detector group 304 and the transimpedance amplifier group 305 are located in the cavity formed by the receiving shell 514 and the circuit board 300, so as to protect the detector group 304 and the transimpedance amplifier group 305 etc. through the cavity.

[0249] Fig.36 1 is a cross-sectional view of a light receiving component and a circuit board according to some embodiments of the present disclosure. Fig.36As shown, the light input end of the optical collimator 511 is connected to the second optical fiber 721, and the light output end of the optical collimator 511 is fixedly connected to the light input end of the optical splitter 512; the detector group 304 and the transimpedance amplifier group 305 are arranged on the surface of the circuit board 300, the transimpedance amplifier group 305 is located on the right side of the detector group 304, and the support plate 513 is arranged on the surface of the circuit board 300 and on the left side of the detector group 304; the optical splitter 512 is connected to the support plate 513, so that the optical splitter 512 is tilted through the support plate 513. One path of composite light is input to the optical collimator 511 through the second optical fiber 721, and is transmitted to the optical splitter 512 through the optical collimator 511. The optical splitter 512 splits the one path of composite light into multiple split lights, and the multiple split lights are reflected by the reflection surface of the optical splitter 512. The reflected split lights are converged to the corresponding detectors in the detector group 304 through the converging lens 515.

[0250] Fig.37 FIG. 1 is a schematic diagram of another exploded view of a first light receiving component provided according to some embodiments of the present disclosure. Fig.37 As shown, the first light receiving component 510 includes a receiving fixed head 516, and the receiving fixed head 516 is fixedly connected to the second optical fiber 721; the light output end of the receiving fixed head 516 is located above the detector group 304, and the second optical fiber 721 passes through the receiving fixed head 516, so that the end face of the second optical fiber 721 extends to the top of the detector group 304. The optical signal transmitted by the second optical fiber 721 is transmitted to the top of the detector group 304, and is reflected by the optical fiber end face in the second optical fiber 721 and transmitted to the corresponding detector in the detector group 304.

[0251] In some embodiments, a positioning column 5146 is disposed at the bottom of the third receiving side plate 5143 , and the positioning column 5146 is used to receive the housing 514 to position and connect the circuit board 300 . Exemplarily, the positioning column 5146 is located at the front end of the third receiving side plate 5143 .

[0252] In some embodiments, a positioning column may also be disposed at the bottom of the first receiving side plate 5141 . The disposition of the positioning column on the first receiving side plate 5141 may refer to the disposition of the positioning column 5146 on the third receiving side plate 5143 .

[0253] In some embodiments, the second optical fiber 721 includes multiple optical fibers for transmitting multiple optical signals. The light output end of the receiving fixed head 516 is located above the detector group 304, and the detector group 304 includes multiple detectors. The multiple optical signals transmitted by the second optical fiber 721 are transmitted to the detector group 304, and are reflected by the optical fiber end face of the second optical fiber 721 to the detector group 304 and then transmitted to the corresponding detectors in the detector group 304.

[0254] Fig.38is a schematic diagram of a structure of a receiving fixed head provided according to some embodiments of the present disclosure, Fig.39 is an exploded schematic diagram of a receiving fixed head provided according to some embodiments of the present disclosure, Fig.40 1 is a cross-sectional view of a receiving fixing head provided according to some embodiments of the present disclosure. Figure 38-Figure 40 As shown, the receiving fixed head 516 includes a fiber support portion 5161 and a fiber fixing portion 5162, the end of the second optical fiber 721 extends from one end of the fiber support portion 5161 to the other end of the fiber support portion 5161, and the fiber support portion 5161 supports and connects the second optical fiber 721. The fiber fixing portion 5162 covers the fiber support portion 5161, so as to fix the end of the second optical fiber 721 through the fiber support portion 5161 and the fiber fixing portion 5162.

[0255] In some embodiments, a reflective end face 7211 is provided at the end of the optical fiber in the second optical fiber 721, and the reflective end face 7211 is located above the detector group 304. The reflective end face 7211 is used to reflect and change the transmission direction of the optical signal transmitted by the second optical fiber 721, so as to reflect the optical signal transmitted by the second optical fiber 721 to the corresponding detector in the detector group 304.

[0256] In some embodiments, the reflection end face 7211 is an inclined face, and the received optical signal transmitted by the second optical fiber 721 is totally reflected at the reflection end face 7211. Exemplarily, the inclination angle of the reflection end face 7211 is 46-50°, such as 48°.

[0257] In some embodiments, the second optical fiber 721 passes through one end of the optical fiber support portion 5161 and extends to the outside of the other end of the optical fiber support portion 5161, so that the reflective end surface 7211 is located outside the other end of the optical fiber support portion 5161. One end of the optical fiber fixing portion 5162 is connected to one end of the optical fiber support portion 5161, and the other end of the optical fiber fixing portion 5162 is located outside the other end of the optical fiber support portion 5161. The other end of the optical fiber fixing portion 5162 is fixedly connected to the end of the second optical fiber 721 to support the end of the second optical fiber 721. In this way, the other end of the optical fiber support portion 5161 is shorter than the other end of the optical fiber fixing portion 5162, which facilitates the receiving fixing head 516 to avoid the detector group 304 and ensures the adaptability of the receiving fixing head 516.

[0258] In some embodiments, a protective surface 5163 is formed at the other end of the optical fiber fixing portion 5162, and the protective surface 5163 surrounds the side of the reflective end surface 7211 to protect the reflective end surface 7211. Exemplarily, the protective surface 5163 is an inclined surface, and the inclination angle of the protective surface 5163 is 46-50°, such as the inclination angle of the protective surface 5163 is 48°.

[0259] In some embodiments, the second optical fiber 721 includes four optical fibers, which are arranged side by side on the optical fiber support 5161. The detector group 304 includes four detectors, and four optical signals are transmitted through the four optical fibers of the second optical fiber 721, and the four optical signals are reflected to the corresponding detectors through the corresponding reflection end faces 7211.

[0260] In some embodiments, the bottom of the optical fiber support part 5161 is connected to the circuit board 300. Of course, in some embodiments, a support plate 513 is provided on the circuit board 300, and the support plate 513 supports and connects the optical fiber support part 5161.

[0261] Fig.41 FIG. 1 is a schematic diagram of another structure of a receiving fixed head provided according to some embodiments of the present disclosure. Fig.41 As shown, the first light receiving component 510 may include a lens matrix 517, which is arranged on the optical path from the reflective end surface 7211 to the detector group 304, and is used to converge and transmit the optical signal reflected by the reflective end surface 7211.

[0262] In some embodiments, a lens mounting surface 5164 is provided at the bottom of the other end of the optical fiber support portion 5161, the lens mounting surface 5164 is located above the detector group 304, and the lens matrix 517 is fixedly connected to the lens mounting surface 5164. Exemplarily, the lens mounting surface 5164 is an inclined surface, so that the normal line of the lens mounting surface 5164 is not perpendicular to the extension direction of the second optical fiber 721. The inclination angle of the lens mounting surface 5164 is 5-10°, such as the inclination angle of the lens mounting surface 5164 is 8°.

[0263] In some embodiments, the other end of the optical fiber support portion 5161 extends beyond the reflective end surface 7211 to provide sufficient space for setting the lens mounting surface 5164.

[0264] In some embodiments, the second light receiving component 520 includes N detectors for receiving N optical signals. The structure of the second light receiving component 520 may be the same as or similar to that of the first light receiving component 510. The specific structure of the second light receiving component 520 may refer to the first light receiving component 510 provided in the above embodiment.

[0265] In some embodiments, the second light receiving component 520 receives an optical signal transmitted through a third optical fiber 731 , and the configuration of the third optical fiber 731 may refer to the configuration of the second optical fiber 721 in the above example.

[0266] Fig.42 A partial schematic diagram of a circuit board provided according to some embodiments of the present disclosure Figure 1 In some embodiments, Fig.42As shown, the edge of the mounting hole 302 is provided with a first connection layer 310, and the first connection layer 310 is attached to the top surface of the circuit board 300. The emission cover plate 420 is bonded to the first connection layer 310 by glue, so that the emission cover plate 420 is fixedly connected to the circuit board 300. The first connection layer 310 is convenient for reinforcing the connection between the emission cover plate 420 and the circuit board 300, so as to ensure the bonding firmness between the emission cover plate 420 and the circuit board 300.

[0267] In some embodiments, the first connection layer 310 may be a metal layer attached to the top surface of the circuit board 300 , such as a copper layer, a gold layer, etc. attached to the top surface of the circuit board 300 .

[0268] In some embodiments, the edge of the mounting hole 302 is provided with a first connection layer 310a and a first connection layer 310b, the first connection layer 310a is located on one side of the mounting hole 302 in the length direction, and the first connection layer 310b is located on the other side of the mounting hole 302 in the length direction. The first connection layer 310a and the first connection layer 310b are respectively bonded and connected to the bottom of the side plate of the transmitting cover plate 420.

[0269] In some embodiments, the first connection layer 310 may be a metal layer attached to the surface of the circuit board 300 , such as a copper layer.

[0270] Fig.43 A partial schematic diagram of a circuit board provided according to some embodiments of the present disclosure Figure 2 In some embodiments, Fig.43 As shown, the second connection layer 320 is provided at the edge of the mounting hole 302, and the second connection layer 320 is attached to the back of the circuit board 300. The transmitting base 410 is bonded to the second connection layer 320 by glue, so that the transmitting base 410 is fixedly connected to the circuit board 300. The second connection layer 320 is convenient for reinforcing the connection between the transmitting base 410 and the circuit board 300, so as to ensure the bonding firmness between the transmitting base 410 and the circuit board 300. Exemplarily, the second connection layer 320 is a metal layer attached to the back of the circuit board 300, such as a copper layer, a gold layer, etc. attached to the top surface of the circuit board 300.

[0271] In some embodiments, the second connection layer 320 is provided with a first groove 330, the bottom of the first groove 330 extends into the circuit board 300, and the first groove 330 is used to separate the second connection layer 320. Exemplarily, the second connection layer 320 is provided with a plurality of first grooves 330, and the intervals between adjacent first grooves 330 are equal or similar. The first groove 330 is provided in the second connection layer 320, so as to reduce the flatness of the second connection layer 320, facilitate relatively reducing the bonding force of the second connection layer 320 fixedly connected to the launch base 410, and reduce the damage to the circuit board 300 caused by repairing and removing the launch base 410.

[0272] In some embodiments, the width of the first grooves 330 and the intervals between adjacent first grooves 330 are equal to or similar to each other, so as to balance the bonding strength between the transmitting base 410 and the circuit board 300 .

[0273] In some embodiments, the second connection layer 320a, the second connection layer 320b and the second connection layer 320c are disposed at the edge of the mounting hole 302. Fig.43 In the direction shown, the second connection layer 320a is located on the upper side of the mounting hole 302, the second connection layer 320b is located on the right side of the mounting hole 302, and the second connection layer 320c is located on the lower side of the mounting hole 302. The second connection layer 320a, the second connection layer 320b, and the second connection layer 320c are respectively bonded and connected to the first mounting surface 411 of the transmitting base 410.

[0274] In some embodiments, the second connection layer 320a, the second connection layer 320b, or the second connection layer 320c is provided with a first groove 330. Of course, in some embodiments, the second connection layer 320a, the second connection layer 320b, and the second connection layer 320c are all provided with a first groove 330, and the second connection layer 320a, the second connection layer 320b, and the second connection layer 320c are respectively continuous; so as to better balance the bonding force between the transmitting base 410 and the circuit board 300.

[0275] In some embodiments, a groove may be provided on the first connection layer 310. For example, grooves may be provided on the first connection layer 310a and the first connection layer 310b respectively.

[0276] In some embodiments, a third connection layer 340 is further disposed on the back of the circuit board 300, and the third connection layer 340 is located in the projection area of ​​the first light receiving component 510 in the direction of the circuit board 300. Exemplarily, the third connection layer 340 is bonded to connect the optical splitter 512, the support plate 513 or the receiving fixing head 516, etc. In the embodiment of the present disclosure, the third connection layer 340 can be disposed on the front of the circuit board 300.

[0277] In some embodiments, a second groove 350 is provided on the third connection layer 340, and the bottom of the second groove 350 extends into the circuit board 300, and the second groove 350 is used to separate the third connection layer 340. Exemplarily, the second groove 350 extends along the length direction of the circuit board 300. The second groove 350 is used to balance the bonding force between the optical splitter 512, the support plate 513 or the receiving fixed head 516 and the circuit board 300, and effectively reduce the damage to the circuit board 300 caused by the repair and removal of the optical splitter 512, the support plate 513 or the receiving fixed head 516. The second groove 350 may include a plurality of grooves, which are arranged side by side and extend along the length direction of the circuit board 300.

[0278] In some embodiments, the third connection layer 340 includes a welding portion 341, which is located at a side of the third connection layer 340 away from the mounting hole 302. The welding portion 341 connects the detector group 304 and the transimpedance amplifier group 305 by welding.

[0279] In some embodiments, a blocking groove 360 ​​may be provided on the third connection layer 340, and the blocking groove 360 ​​is located at the edge of the welding portion 341 to prevent the glue from overflowing and flowing toward the welding portion 341. Exemplarily, the blocking groove 360 ​​extends from the edge of the welding portion 341 in a direction away from the welding portion 341, so that the blocking groove 360 ​​extends to the edge of the third connection layer 340, so as to prevent the glue from overflowing and flowing to the area outside the third connection layer 340 through the blocking groove 360.

[0280] In some embodiments, the width of the blocking groove 360 ​​is smaller than the width of the second cut groove 350. Exemplarily, the blocking groove 360 ​​is intermittently surrounded by the side of the second cut groove 350, and there is a gap between the second cut groove 350, so as to balance the bonding force between the third connecting layer 340 and the support plate 513, etc., and reduce the glue overflowing outside the third connecting layer 340 area.

[0281] In some embodiments, the edge of the third connection layer 340 is provided with a first positioning groove 306 and a second positioning groove 307, the first positioning groove 306 is located on one side of the third connection layer 340, and the second positioning groove 307 is located on the other side of the third connection layer 340. The first positioning groove 306 and the second positioning groove 307 are used to position and connect the receiving shell 514, such as the first positioning groove 306 is positioned to connect the first positioning claw 5144 or the positioning column 5146.

[0282] In some embodiments, the first positioning groove 306 or the second positioning groove 307 is a circular groove or a waist groove. Exemplarily, the first positioning groove 306 is located at the edge of the circuit board 300.

[0283] In some embodiments, a fourth connection layer 370 is further disposed on the back of the circuit board 300, and the fourth connection layer 370 is located in the projection area of ​​the second light receiving component 520 in the direction of the circuit board 300. The structural form of the fourth connection layer 370 can refer to the third connection layer 340. In some embodiments, the third positioning groove 308 and the fourth positioning groove 309 are disposed at the edge of the fourth connection layer 370.

[0284] Fig.44 The figure is a partial schematic diagram of the interior of an optical module provided according to some embodiments of the present disclosure. Fig.44, a use state of an adapter fixing component is shown in FIG. In some embodiments, the first transmission group 710 may include a first optical fiber adapter 712, and the first optical fiber adapter 712 is connected to a portion of the optical fibers in the first optical fiber 711. The first optical fiber adapter 712 is connected to the optical fiber fixing component 800, so that the first optical fiber adapter 712 is fixed to the optical port of the optical module through the optical fiber fixing component 800. A portion of the optical fibers in the first optical fiber 711 is optically connected to the external optical fiber through the first optical fiber adapter 712, and the optical signal transmitted by the first optical fiber 711 is coupled to the external optical fiber at the first optical fiber adapter 712.

[0285] In some embodiments, the first transmission group 710 may include a second optical fiber adapter 713, and the second optical fiber adapter 713 is connected to a portion of the first optical fiber 711. The second optical fiber adapter 713 is connected to the optical fiber fixing component 800, so that the second optical fiber adapter 713 is fixed to the optical port of the optical module through the optical fiber fixing component 800. A portion of the optical fiber in the first optical fiber 711 is optically connected to the external optical fiber through the second optical fiber adapter 713, and the optical signal transmitted by the first optical fiber 711 is coupled to the external optical fiber through the second optical fiber adapter 713.

[0286] In some embodiments, the second transmission group 720 may include a third optical fiber adapter 722, and the third optical fiber adapter 722 is connected to the second optical fiber 721. The third optical fiber adapter 722 is connected to the optical fiber fixing component 800, so that the third optical fiber adapter 722 is fixed to the optical port of the optical module through the optical fiber fixing component 800. The second optical fiber 721 is optically connected to the external optical fiber through the third optical fiber adapter 722, and the optical signal transmitted by the external optical fiber is coupled to the second optical fiber 721 at the third optical fiber adapter 722.

[0287] In some embodiments, the third transmission group 730 may include a fourth optical fiber adapter 732, and the fourth optical fiber adapter 732 is connected to the third optical fiber 731. The fourth optical fiber adapter 732 is connected to the optical fiber fixing component 800, so as to fix the third optical fiber adapter 722 to the optical port of the optical module through the optical fiber fixing component 800. The third optical fiber 731 is optically connected to the external optical fiber through the fourth optical fiber adapter 732, and the optical signal transmitted by the external optical fiber is coupled to the third optical fiber 731 at the fourth optical fiber adapter 732.

[0288] In some embodiments, the optical fiber fixing component 800 may include an optical fiber fixing frame 810, and the first optical fiber adapter 712 and the like are fixedly connected to the optical fiber fixing frame 810. The optical fiber fixing frame 810 is assembled at the optical port of the optical module, such as the optical fiber fixing frame 810 is fixedly connected to the lower housing 202 and the like, so that the optical port of the optical module such as the first optical fiber adapter 712 and the like is connected to the optical fiber fixing frame 810.

[0289] In some embodiments, the optical fiber fixing component 800 may include a gasket 820, which is assembled and connected to the first optical fiber adapter 712, etc., so that the first optical fiber adapter 712, etc. is sealed and connected to the housing of the optical module. For example, the first optical fiber adapter 712, etc. is sealed and connected to the lower housing 202 through the gasket 820 to fix the first optical fiber adapter 712, etc., and reduce the movement of the first optical fiber adapter 712, etc. when plugging and unplugging the external optical fiber.

[0290] In some embodiments, the gasket 820 can be called a shielding plate, such as the gasket 820 can be a shielding gasket to shield electromagnetic radiation. The electrical components on the circuit board 300, the optical components of the optical emitting component 400, and the electrical components of the optical receiving component 500 may have various electromagnetic wave radiation problems when working, which may easily cause the electromagnetic interference (EMI) of the optical module to exceed the standard. A shielding gasket is set on the first optical fiber adapter 712, etc., so as to achieve electromagnetic compatibility (EMC) shielding of the optical module through the shielding gasket.

[0291] Fig.45 A structural diagram of a fixing bracket provided according to some embodiments of the present disclosure Figure 1 , Fig.46 A structural diagram of a fixing bracket provided according to some embodiments of the present disclosure Figure 2 In some embodiments, the optical fiber fixing frame 810 includes a fixing plate 811, and the fixing plate 811 is used to connect the first optical fiber adapter 712, etc. A first assembly hole 812 is formed on the fixing plate 811, and the first assembly hole 812 passes through the fixing plate 811, and the first assembly hole 812 is used to assemble and connect the optical fiber adapter 712, etc. A slit 813 is formed on the edge of the fixing plate 811, and the slit 813 is connected to the first assembly hole 812. Exemplarily, a plurality of first assembly holes 812 are formed on the fixing plate 811, and a plurality of slits 813 are formed on the edge of the fixing plate 811, and the slits 813 are connected to the corresponding first assembly holes 812. The slit 813 can be located at the left edge, the right edge, the upper edge or the lower edge of the fixing plate 811.

[0292] In some embodiments, the width of the slit 813 is less than one quarter of the inner diameter of the first assembly hole 812 .

[0293] In some embodiments, a first row of assembly holes 812a and a second row of assembly holes 812b are provided on the fixing plate 811, wherein the first row of assembly holes 812a is located on the left side of the fixing plate 811, and the second row of assembly holes 812b is located on the right side of the fixing plate 811. Exemplarily, the first row of assembly holes 812a and the second row of assembly holes 812b include two first assembly holes 812 respectively, so as to form four first assembly holes 812 arranged in two rows on the fixing plate 811.

[0294] In some embodiments, a first row of slits 813a is provided at the left edge of the fixing plate 811, and a second row of slits 813b is provided at the right edge of the fixing plate 811. The slits in the first row of slits 813a correspond to the first assembly holes 812 in the first row of assembly holes 812a, and the slits in the second row of slits 813b correspond to the first assembly holes 812 in the second row of assembly holes 812b.

[0295] In some embodiments, the optical fiber fixing frame 810 may include a connecting plate 814, which is located on one side of the bottom of the fixing plate 811 and connected to the fixing plate 811. The connecting plate 814 is assembled and connected to the lower shell 202, so that the optical fiber fixing frame 810 can be seated in the lower shell 202 through the connecting plate 814, thereby facilitating the assembly of the optical fiber fixing frame 810 in the lower shell 202.

[0296] In some embodiments, a relief groove 8141 is provided on the top surface of the connecting plate 814, and the bottom surface of the connecting plate 814 is assembled with the connecting bottom plate 2021. One end of the relief groove 8141 is located below the first assembly hole 812 and passes through the connecting plate 814. The relief groove 8141 is used to avoid the optical fiber adapter.

[0297] In some embodiments, the first assembly hole 812 includes a fixing portion 8121 and a limiting portion 8122, the fixing portion 8121 is located at the front end of the limiting portion 8122, a step surface 8123 is formed between the fixing portion 8121 and the limiting portion 8122, an assembly bevel 8124 is provided on the fixing portion 8121, and the step surface 8123 and the assembly bevel 8124 cooperate to assemble and connect the optical fiber adapter.

[0298] In some embodiments, the optical fiber fixing frame 810 may include a first fixing arm 815 and a second fixing arm 816, and the first fixing arm 815 and the second fixing arm 816 are used to connect the optical fiber fixing frame 810 to the lower housing 202. Exemplarily, one end of the first fixing arm 815 is connected to the left side of the fixing plate 811, one end of the second fixing arm 816 is connected to the right side of the fixing plate 811, and the other end of the first fixing arm 815 and the other end of the second fixing arm 816 are assembled with the lower side plate 2022.

[0299] In some embodiments, a first positioning protrusion 8151 is disposed on the outer side of the other end of the first fixed arm 815 , the first positioning protrusion 8151 protrudes from the outer side surface of the first fixed arm 815 , and the first positioning protrusion 8151 is limitedly connected to the inner wall of the lower side plate 2022 .

[0300] In some embodiments, a first limiting protrusion 8152 is formed on the top of the first fixing arm 815. The first limiting protrusion 8152 is formed by the top surface of the first fixing arm 815 protruding outward, and the top surface position of the first limiting protrusion 8152 is higher than the position of the slit 813. The first limiting protrusion 8152 is used to limit the optical fiber to bind the optical fiber to the inner side of the first fixing arm 815 to prevent the optical fiber from extending to the outer side of the first fixing arm 815 and causing damage to the optical fiber. The first limiting protrusion 8152 is located at the middle and rear part of the first fixing arm 815.

[0301] In some embodiments, a second positioning protrusion 8161 is provided on the outer side of the other end of the second fixed arm 816 , the second positioning protrusion 8161 protrudes from the outer side surface of the second fixed arm 816 , and the second positioning protrusion 8161 is limitedly connected to the inner wall of the lower side plate 2022 .

[0302] In some embodiments, a second limiting protrusion 8162 is formed on the top of the second fixed arm 816. The second limiting protrusion 8162 is formed by the top surface of the second fixed arm 816 protruding outward, and the top surface position of the second limiting protrusion 8162 is higher than the position of the slit 813. The second limiting protrusion 8162 is used to limit the optical fiber to bind the optical fiber to the inner side of the second fixed arm 816 to prevent the optical fiber from extending to the outer side of the second fixed arm 816 and causing damage to the optical fiber. The second limiting protrusion 8162 is located at the middle and rear part of the second fixed arm 816.

[0303] In some embodiments, one end of the first fixed arm 815 is located between the first row of slits 813a. Exemplarily, the slits 813 in the first row of slits 813a are arranged along the upper and lower sides of the first fixed arm 815, which can facilitate the processing of the slits 813 and ensure the connection strength between the first fixed arm 815 and the fixed plate 811.

[0304] In some embodiments, one end of the second fixed arm 816 is located between the second row of slits 813b. Exemplarily, the slits 813 in the second row of slits 813b are arranged along the upper and lower sides of the second fixed arm 816, which can facilitate the processing of the slits 813 and ensure the connection strength between the second fixed arm 816 and the fixed plate 811.

[0305] In some embodiments, the fixing plate 811 includes a mounting surface 8111 , and the mounting surface 8111 is used to contact the connection pad 820 .

[0306] In some embodiments, a limiting platform is formed on the fixing plate 811 . The limiting platform is disposed on an edge of the fixing plate 811 . The limiting platform is formed by the edge of the mounting surface 8111 protruding outward.

[0307] In some embodiments, a first limiting platform 8112 and a second limiting platform 8113 are formed on the fixing plate 811, the first limiting platform 8112 is located at the left edge of the fixing plate 811, and the second limiting platform 8113 is located at the right edge of the fixing plate 811. The first limiting platform 8112 and the second limiting platform 8113 are used to limit the side of the connecting gasket 820. Exemplarily, the first column of slits 813a passes through the first limiting platform 8112, and the second column of slits 813b passes through the second limiting platform 8113.

[0308] In some embodiments, a third limiting platform 8114 is formed on the fixing plate 811 , and the third limiting platform 8114 is located at the upper edge of the mounting surface 8111 and between the first row of assembly holes 812 a and the second row of assembly holes 812 b . The third limiting platform 8114 is used to limit the connection gasket 820 .

[0309] In some embodiments, a fourth limiting platform 8115 is formed on the fixing plate 811 , and the fourth limiting platform 8115 is located at the lower edge of the mounting surface 8111 and between the first column of assembly holes 812a and the second column of assembly holes 812b . The fourth limiting platform 8115 is used to limit the connection gasket 820 .

[0310] Fig.47 is a schematic structural diagram of a gasket provided according to some embodiments of the present disclosure, Fig.48 FIG. 1 is a diagram showing the use status of an optical fiber fixing frame provided according to some embodiments of the present disclosure. Fig.47 As shown, a second assembly hole 821 is formed on the gasket 820, and the second assembly hole 821 passes through the gasket 820. The second assembly hole 821 is used to assemble and connect the optical fiber adapter. Exemplarily, a plurality of second assembly holes 821 are formed on the gasket 820; for example, four second assembly holes 821 are formed on the gasket 820 in pairs.

[0311] In some embodiments, the upper edge of the gasket 820 is provided with a first slot 822, which penetrates the gasket 820. The first slot 822 is assembled and connected to the third limiting platform 8114. Exemplarily, the height of the third limiting platform 8114 is less than or equal to the thickness of the gasket 820.

[0312] In some embodiments, the lower edge of the gasket 820 is provided with a second slot 823, which penetrates the gasket 820. The second slot 823 is assembled and connected to the fourth limiting platform 8115. Exemplarily, the height of the fourth limiting platform 8115 is less than or equal to the thickness of the gasket 820.

[0313] In some embodiments, the assembly process of the optical fiber adapter, the optical fiber fixing frame 810 and the gasket 820 is as follows: first, the optical fiber at the tail of the optical fiber adapter is installed into the first assembly hole 812 through the slit 813, and then the optical fiber is dragged to make the optical fiber adapter cooperate with the step surface 8123 and the assembly bevel 8124 of the first assembly hole 812, and then the gasket 820 is put on the optical fiber adapter, and finally the gasket 820 is pushed toward the fixing plate 811 so that the gasket 820 is located between the first limit platform 8112 and the second limit platform 8113, the first card slot 822 is assembled and connected to the third limit platform 8114, and the second card slot 823 is assembled and connected to the fourth limit platform 8115.

[0314] Fig.49 is a schematic structural diagram of another optical fiber fixing frame provided according to some embodiments of the present disclosure, Fig.50 FIG. 1 is a schematic diagram of assembling another optical fiber fixing frame and a gasket according to some embodiments of the present disclosure. Fig.49 and Fig.50 As shown, the outer side wall of the other end of the first fixed arm 815 is convexly formed with a first assembly portion 8153, and the first assembly portion 8153 is assembled and connected to the inner side wall of the lower side plate 2022. The thickness of the other end of the first fixed arm 815 is greater than the thickness of one end of the first fixed arm 815, which is convenient for improving the strength of the other end of the first fixed arm 815. Exemplarily, the first assembly portion 8153 is formed by the expansion of the other end of the first fixed arm 815 to the left and right sides of the first fixed arm 815. The first assembly portion 8153 is convenient for increasing the assembly firmness of the first fixed arm 815 and the lower side plate 2022, reducing the possibility of loosening of the optical fiber fixing frame, and the first assembly portion 8153 is also convenient for the molding of the first fixed arm 815.

[0315] In some embodiments, the other end of the second fixing arm 816 is formed with a second assembly portion 8163, the thickness of the second assembly portion 8163 is greater than the thickness of one end of the second fixing arm 816, and the second assembly portion 8163 is assembled and connected to the inner wall of the lower side plate 2022. Exemplarily, the second assembly portion 8163 is formed by the other end of the second fixing arm 816 expanding to the left and right sides of the second fixing arm 816. The second assembly portion 8163 is convenient for increasing the assembly firmness of the second assembly portion 8163 and the lower side plate 2022, reducing the possibility of loosening of the optical fiber fixing frame, and the second assembly portion 8163 is also convenient for the molding of the second fixing arm 816.

[0316] Fig.51 is a partial schematic diagram of a lower housing provided according to some embodiments of the present disclosure, Fig.52 A use state of a lower shell provided according to some embodiments of the present disclosure Figure 1 , Fig.53 A use state of a lower shell provided according to some embodiments of the present disclosure Figure 2 In some embodiments, Figure 51-Figure 53 As shown, a card seat 2023 is formed at one end of the lower shell 202, and the card seat 2023 extends from the left side of the lower shell 202 to the right side. A plug hole 2024 is formed on the card seat 2023, and the plug hole 2024 connects the optical port of the optical module and the inner cavity of the lower shell 202. The front end of the optical fiber adapter is assembled with the connecting plug hole 2024. Exemplarily, a plurality of plug holes 2024 are formed on the card seat 2023; for example, four plug holes 2024 are formed in a row of two on the card seat 2023. The gasket 820 is located between the card seat 2023 and the optical fiber fixing frame 810; for example, the optical fiber fixing frame 810 squeezes and fixes the gasket 820 between the optical fiber fixing frame 810 and the card seat 2023.

[0317] In some embodiments, a first positioning groove 2025 is formed on the lower side plate 2022 at one side of the lower housing 202, and the first positioning groove 2025 is formed by the inner side wall of the lower side plate 2022 being recessed toward the outer side of the lower side plate 2022. The first positioning groove 2025 is assembled and connected to the other end of the first fixed arm 815. Exemplarily, the first positioning protrusion 8151 is assembled and connected to the first positioning groove 2025, or the first assembly portion 8153 is assembled and connected to the first positioning groove 2025.

[0318] In some embodiments, a second positioning groove 2026 is formed on the lower side plate 2022 on the other side of the lower housing 202, and the second positioning groove 2026 is formed by the inner side wall of the lower side plate 2022 being recessed toward the outer side of the lower side plate 2022. The second positioning groove 2026 is assembled and connected to the other end of the second fixed arm 816. Exemplarily, the second positioning protrusion 8161 is assembled and connected to the second positioning groove 2026, or the second assembly portion 8163 is assembled and connected to the second positioning groove 2026.

[0319] Fig.54 is a schematic structural diagram of another optical fiber fixing frame provided according to some embodiments of the present disclosure, Fig.55 FIG. 1 is a schematic diagram of assembling another optical fiber fixing frame according to some embodiments of the present disclosure. Fig.54 and Fig.55 As shown, the lower edge of the fixing plate 811 is provided with a mounting groove 817, and the mounting groove 817 penetrates the fixing plate 811. Exemplarily, the extending direction of the mounting groove 817 is the same as the extending direction of the first mounting hole 812. The lower shell 202 is provided with a mounting column 2027, and the mounting column 2027 is assembled and connected to the mounting groove 817; for example, the mounting column 2027 is provided on the bottom plate 2021. Of course, in some embodiments, the mounting column can be provided on the fixing plate 811, and the mounting groove can be provided on the bottom plate 2021.

[0320] In some embodiments, a fixing hole 818 is provided on the fixing plate 811 , the fixing hole 818 is connected to the assembly slot 817 , and a screw passes through the fixing hole 818 to be fixedly connected to the mounting column 2027 , so that the optical fiber fixing frame 810 is fixedly connected to the lower housing 202 .

[0321] In some embodiments, a fifth limiting platform 8116 is formed on the upper edge of the fixing plate 811 , one end of the fifth limiting platform 8116 is connected to the first limiting platform 8112 , and the other end of the fifth limiting platform 8116 is connected to the second limiting platform 8113 . The fifth limiting platform 8116 limits the upper side of the connection gasket 820 .

[0322] In some embodiments, a sixth limiting platform 8117 is formed at the lower edge of the fixing plate 811, one end of the sixth limiting platform 8117 is connected to the first limiting platform 8112, the other end of the sixth limiting platform 8117 is connected to the second limiting platform 8113, and the assembly groove 817 passes through the sixth limiting platform 8117. The sixth limiting platform 8117 limits the lower side of the connection gasket 820.

[0323] Fig.56 A schematic diagram of another optical fiber fixing component provided according to some embodiments of the present disclosure Figure 1 , Fig.57 A schematic diagram of another optical fiber fixing component provided according to some embodiments of the present disclosure Figure 2 , Fig.58 A cross-sectional view of another optical fiber fixing component provided according to some embodiments of the present disclosure Figure 1 In some embodiments, Figure 56-Figure 58 As shown, the optical fiber fixing component 800 may include an optical fiber bracket 830, and the optical fiber bracket 830 includes a bracket plate 831. A first support group 831a is provided on the upper side of the end of the bracket plate 831, and the first support group 831a is assembled with a connecting optical fiber adapter. A second support group 831b is provided on the lower side of the end of the bracket plate 831, and the second support group 831b is assembled with a connecting optical fiber adapter.

[0324] In some embodiments, the first support group 831a includes a first support plate 832, a second support plate 833, and a third support plate 834, which are arranged in sequence on the upper side of the end of the bracket plate 831. There is a gap between the first support plate 832 and the second support plate 833, and there is a gap between the second support plate 833 and the third support plate 834. The first support plate 832, the second support plate 833, and the third support plate 834 are assembled and connected with the optical fiber adapter to ensure the assembly stability of the bracket plate 831 and the optical fiber adapter.

[0325] In some embodiments, the tops of the first support plate 832 , the second support plate 833 , and the third support plate 834 may be flush.

[0326] In some embodiments, the second support group 831b includes a fourth support plate 835, a fifth support plate 836, and a sixth support plate 837, which are sequentially arranged side by side on the lower side of the end of the bracket plate 831. There is a gap between the fourth support plate 835 and the fifth support plate 836, and there is a gap between the fifth support plate 836 and the sixth support plate 837. The fourth support plate 835, the fifth support plate 836, and the sixth support plate 837 are assembled and connected to the optical fiber adapter to ensure the assembly stability of the bracket plate 831 and the optical fiber adapter.

[0327] In some embodiments, the height of the fourth support plate 835 is greater than the height of the fifth support plate 836 , and the tops of the fifth support plate 836 and the sixth support plate 837 may be flush.

[0328] In some embodiments, the first support plate 832 and the fourth support plate 835 are arranged back to back, the second support plate 833 and the fifth support plate 836 are arranged back to back, and the third support plate 834 and the sixth support plate 837 are arranged back to back. The first support plate 832, the second support plate 833 and the third support plate 834 are equipped with connecting optical fiber adapters, and the fourth support plate 835, the fifth support plate 836 and the sixth support plate 837 are equipped with connecting optical fiber adapters, so that the optical fiber bracket 830 can fix the optical fiber adapters in layers.

[0329] In some embodiments, a first assembly port 8321 is provided on the first support plate 832, a second assembly port 8331 is provided on the second support plate 833, and a third assembly port 8341 is provided on the third support plate 834. The first assembly port 8321, the second assembly port 8331, and the third assembly port 8341 are arranged in a series to assemble and connect the optical fiber adapter. Exemplarily, multiple series of assembly ports, such as two series, can be formed on the first support plate 832, the second support plate 833, and the third support plate 834.

[0330] In some embodiments, a first limiting groove 8332 is formed on one side of the second assembly opening 8331 close to the first assembly opening 8321, and the first limiting groove 8332 is assembled and connected to the optical fiber adapter. Exemplarily, a first limiting surface 8333 is formed on the side of the first limiting groove 8332, and the first limiting surface 8333 limits the assembly of the optical fiber adapter, making it convenient for the first limiting groove 8332 to assemble and connect the optical fiber adapter.

[0331] In some embodiments, a first notch 8322 is formed on the first support plate 832 , and the first notch 8322 is located at a side of the first assembly opening 8321 . Exemplarily, the first notch 8322 may be connected to the first assembly opening 8321 .

[0332] In some embodiments, a fourth assembly port 8351 is provided on the fourth support plate 835, and a second limiting groove 8361 is provided on the fifth support plate 836. The fourth assembly port 8351 and the second limiting groove 8361 are arranged in a series to assemble and connect the optical fiber adapter. Of course, in the embodiment of the present disclosure, multiple series of assembly ports can be formed on the fourth support plate 835, the fifth support plate 836, and the sixth support plate 837, and a limiting surface can also be formed on the second limiting groove 8361.

[0333] In some embodiments, a second notch 8352 is formed on the fourth support plate 835 , and the second notch 8352 is located at a side of the fourth support plate 835 . The second notch 8352 may not be connected to the fourth assembly port 8351 .

[0334] In some embodiments, the optical fiber bracket 830 may include a first assembly column 8381, which is disposed on the upper side of the bracket plate 831 and located on the side of the first support plate 832. The first assembly column 8381 is used to assemble the housing connected to the optical module, and the first assembly column 8381 may also increase the strength of the optical fiber bracket 830. Exemplarily, the first assembly column 8381 extends from the edge of the bracket plate 831 to the first support plate 832, and the height of the first assembly column 8381 may be higher than the height of the first support plate 832. The left side of the first assembly column 8381 may be assembled and connected to the lower housing 202, and the top side of the first assembly column 8381 may be assembled and connected to the upper housing.

[0335] In some embodiments, the optical fiber bracket 830 may include a second assembly column 8382, which is disposed on the lower side of the bracket plate 831 and located on the side of the fourth support plate 835. The second assembly column 8382 is used to assemble and connect the lower housing 202, and the second assembly column 8382 can also increase the strength of the optical fiber bracket 830. Exemplarily, the second assembly column 8382 extends from the edge of the bracket plate 831 to the fourth support plate 835, and the height of the second assembly column 8382 can be lower than the height of the fourth support plate 835.

[0336] In some embodiments, a first positioning hole 8383 is provided on the second assembly column 8382 , and the first positioning hole 8383 is used for positioning and connecting the lower shell 202 .

[0337] In some embodiments, the optical fiber bracket 830 may include a third assembly column 8384, and the third assembly column 8384 is located on the side of the sixth support plate 837. Exemplarily, the top of the third assembly column 8384 extends to the side of the third support plate 834.

[0338] In some embodiments, a second positioning hole 8385 is provided on the third assembly column 8384 , and the second positioning hole 8385 is used for positioning and connecting the lower shell 202 .

[0339] In some embodiments, the structure of the first support group 830a may be the same as the structure of the second support group 830b provided in the above embodiments; or, the structure of the second support group 830b may be the same as the structure of the first support group 830a provided in the above embodiments.

[0340] Fig.59 A cross-sectional view of another optical fiber fixing component provided according to some embodiments of the present disclosure Figure 2 , Fig.60 FIG. 1 is a partial schematic diagram of another optical fiber fixing component provided according to some embodiments of the present disclosure. Fig.59 and Fig.60 As shown, the optical fiber fixing component 800 may include a first gasket 840, and the first gasket 840 is embedded in the gap between the first support plate 832 and the second support plate 833. Exemplarily, the bottom of the first gasket 840 is embedded in the gap between the first support plate 832 and the second support plate 833. The first gasket 840 is provided with a first adapting hole 841, so as to connect the optical fiber adapter through the first adapting hole 841.

[0341] In some embodiments, the first gasket 840 is a strip-shaped gasket, and a plurality of first adapting holes 841 are provided on the first gasket 840 along the length direction of the first gasket 840, such as two first adapting holes 841. The first gasket 840 can be a shielding gasket, and the first gasket 840 is interference-connected with the first support plate 832 and the second support plate 833. The first gasket 840 can not only shield electromagnetic radiation, but also strengthen the assembly of the optical fiber adapter, and reduce the movement of the optical fiber adapter caused by plugging and unplugging the external optical fiber.

[0342] In some embodiments, the optical fiber fixing component 800 may include a second gasket 850, and the second gasket 850 is embedded in the gap between the fourth support plate 835 and the fifth support plate 836. Exemplarily, the top of the second gasket 850 is embedded in the gap between the fourth support plate 835 and the fifth support plate 836. The second gasket 850 is provided with a second fitting hole 851, so as to connect the optical fiber adapter through the second fitting hole 851.

[0343] In some embodiments, the second gasket 850 is a strip-shaped gasket, and a plurality of second adapting holes 851 are provided on the second gasket 850 along the length direction of the second gasket 850, such as two second adapting holes 851. The second gasket 850 can be a shielding gasket, and the second gasket 850 is interference-connected with the fourth support plate 835 and the fifth support plate 836. The second gasket 850 can not only shield electromagnetic radiation, but also strengthen the assembly of the optical fiber adapter, and reduce the movement of the optical fiber adapter caused by plugging and unplugging the external optical fiber.

[0344] Fig.61 FIG. 1 is a partial schematic diagram of another lower housing provided according to some embodiments of the present disclosure. Fig.61As shown, the seventh support plate 2041, the eighth support plate 2042 and the ninth support plate 2043 are arranged side by side in the optical port of the lower housing 202, and there is a gap between the seventh support plate 2041 and the eighth support plate 2042, and there is a gap between the eighth support plate 2042 and the ninth support plate 2043. The seventh support plate 2041, the eighth support plate 2042 and the ninth support plate 2043 are assembled and connected with the optical fiber adapter.

[0345] In some embodiments, the seventh support plate 2041 is provided with a seventh assembly port 2044, the eighth support plate 2042 is provided with an eighth assembly port 2045, and the ninth support plate 2043 is provided with a ninth assembly port 2046. The seventh assembly port 2044, the eighth assembly port 2045 and the ninth assembly port 2046 are arranged in a series to assemble and connect the optical fiber adapter. Exemplarily, multiple series of assembly ports, such as two series, can be formed on the seventh support plate 2041, the eighth support plate 2042 and the ninth support plate 2043.

[0346] In some embodiments, a partition 2047 may be disposed in the optical port of the lower housing 202, the end of the partition 2047 is connected to the seventh support plate 2041, and the top side support of the end of the partition 2047 is connected to the second assembly column 8382. A first positioning column 2048 is disposed on the partition 2047, and the first positioning column 2048 is assembled and connected to the first positioning hole 8383.

[0347] In some embodiments, a first assembly plate 2049 is formed at an edge of the seventh support plate 2041 , and the first assembly plate 2049 is assembled and connected to the second notch 8352 .

[0348] In some embodiments, a support platform 2028 is formed on the top of the bottom plate 2021 , and a second positioning column 2029 is disposed on the support platform 2028 . The support platform 2028 supports and connects the third assembly column 8384 , and the second positioning column 2029 is assembled and connected to the second positioning hole 8385 .

[0349] Fig.62 FIG. 1 is a schematic diagram of a partial structure of an optical module provided according to some embodiments of the present disclosure. Fig.62 As shown, the optical fiber adapter includes an adapter body 701, on which a protrusion 702 is provided, which is formed by a partial side surface of the adapter body 701 protruding outward. A second limiting surface 703 is provided on the protrusion 702, and the second limiting surface 703 is used for assembling and connecting with the first limiting surface 8333 and the like.

[0350] The first gasket 840 is sleeved on two optical fiber adapters, and the second gasket 850 is sleeved on two optical fiber adapters. The side surface of the first gasket 840 and the side surface of the second gasket 850 are in contact with and connected to the side surface of the protrusion 702 on the corresponding optical fiber adapter.

[0351] Fig.63 is a cross-sectional view of an optical module provided according to some embodiments of the present disclosure, Fig.64 for Fig.63 In some embodiments, as Fig.63 and Fig.64 As shown, a first extrusion plate 2013, a second extrusion plate 2014 and a third extrusion plate 2015 are arranged side by side in the optical port of the upper cover plate 2011. There is a gap between the first extrusion plate 2013 and the second extrusion plate 2014, and there is a gap between the second extrusion plate 2014 and the third extrusion plate 2015. The first extrusion plate 2013, the second extrusion plate 2014 and the third extrusion plate 2015 are assembled and connected to the optical fiber adapter.

[0352] In some embodiments, multiple strings of assembly ports can be formed on the first extrusion plate 2013, the second extrusion plate 2014 and the third extrusion plate 2015, and the assembly ports in the strings are assembled and connected to the optical fiber adapters. The structure of the assembly ports on the first extrusion plate 2013 and the like can refer to the structure of the assembly ports on the seventh support plate 2041 and the like.

[0353] The first gasket 840 and the second gasket 850 are respectively assembled and connected with the optical fiber adapter, and the optical fiber bracket 830 is assembled and connected with the lower shell 202, and the upper shell 201 is covered to fix the upper shell 201 and the lower shell 202. The first gasket 840, the second gasket 850, the optical fiber bracket 830, etc. press the optical fiber adapters against each other to fix multiple optical fiber adapters to the optical ports of the optical module; and the optical fiber adapters are firmly fixed, and the optical fiber adapters are not easily loosened when plugging and unplugging the external optical fiber. The first gasket 840, the second gasket 850, the optical fiber bracket 830, etc. press against each other to fix the optical fiber bracket 830 to the optical port of the optical module, so that the optical fiber bracket 830 is easy to assemble, and thus the optical fiber adapter is easy to fix and assemble.

[0354] Fig.65 FIG. 1 is a partial structural diagram of another optical module provided according to some embodiments of the present disclosure. Fig.65 As shown, the optical transmission component 700 may include a fifth optical fiber adapter 740, which connects the first optical fiber 711, the second optical fiber 721, and the third optical fiber 731, so as to couple and connect the external optical fiber to the first optical fiber 711 through the fifth optical fiber adapter 740. Exemplarily, the ends of the first optical fiber 711, the second optical fiber 721, and the third optical fiber 731 are sequentially connected to the fifth optical fiber adapter 740 in parallel, that is, the width direction of the fifth optical fiber adapter 740 is arranged along the width direction of the optical module.

[0355] In some embodiments, the fifth optical fiber adapter 740 is disposed laterally at the optical port of the optical module.

[0356] Fig.66A partial structure diagram of another optical module provided according to some embodiments of the present disclosure Figure 2 In some embodiments, Fig.66 As shown, the optical transmission component 700 may include a sixth optical fiber adapter 750 and a seventh optical fiber adapter 760. The sixth optical fiber adapter 750 connects a portion of the first optical fiber 711 and the second optical fiber 721, so as to couple and connect the external optical fiber and the second optical fiber 721 through the sixth optical fiber adapter 750, etc. The seventh optical fiber adapter 760 connects a portion of the first optical fiber 711 and the third optical fiber 731, so as to couple and connect the external optical fiber and the third optical fiber 731 through the seventh optical fiber adapter 760, etc.

[0357] In some embodiments, the sixth fiber optic adapter 750 and the seventh fiber optic adapter 760 are arranged side by side at the optical port of the optical module. For example, the sixth fiber optic adapter 750 and the seventh fiber optic adapter 760 are arranged vertically at the optical port of the optical module, that is, the width direction of the sixth fiber optic adapter 750 and the seventh fiber optic adapter 760 are arranged along the height direction of the optical module.

[0358] In some embodiments, the optical fiber fixing component 800 may include a third gasket 860, which is sleeved on the tail end of the fifth optical fiber adapter 740, the sixth optical fiber adapter 750 or the seventh optical fiber adapter 760 and fixedly connected to the housing of the optical module. The third gasket 860 may be a shielding gasket to shield electromagnetic radiation.

[0359] In some embodiments, the upper shell 201 and the lower shell 202 are provided with corresponding gasket assembly grooves. When the upper shell 201 and the lower shell 202 are covered, the corresponding gasket assembly grooves form a gasket accommodating cavity, and the third gasket 860 is assembled and connected to the gasket accommodating cavity. Exemplarily, the third gasket 860 is connected to the gasket assembly groove by interference, so as to achieve electromagnetic shielding of the optical port of the optical module. The third gasket 860 is a conductive rubber, which is sealed and connected to the upper shell 201 and the lower shell 202.

[0360] Fig.67 Schematic diagram of an exploded view of a fifth optical fiber adapter provided according to some embodiments of the present disclosure. In some embodiments, the fifth optical fiber adapter 740 includes a clamping claw 741 and an optical fiber plug 742. A through hole is formed in the clamping claw 741. The optical fiber plug 742 is inserted into one end of the through hole, and the optical fiber end of the first optical fiber 711 is inserted into the optical fiber plug 742. An external optical fiber is inserted into the other end of the through hole, and the external optical fiber is optically coupled to the first optical fiber 711.

[0361] In some embodiments, the fifth fiber optic adapter 740 may include a fiber optic connector 745 , the fiber optic ribbon in the optical module is inserted into the fiber optic connector 745 , and the fiber optic connector 745 is inserted into the fiber optic plug 742 to achieve coupling connection between the fiber optic ribbon and the fiber optic plug 742 through the fiber optic connector 745 .

[0362] In some embodiments, the fifth optical fiber adapter 740 may include a fixing member 743 and a pin 744, one end of the fixing member 743 contacts the end surface of the optical fiber plug 742, and the other end of the fixing member 743 is clamped and fixed with the claw 741, so that the optical fiber plug 742 is clamped in the claw 741 through the fixing member 743. In this way, the fixing member 743 and the pin 744 facilitate the insertion of the optical fiber plug 742 into the claw 741 and the positioning and connection of the external optical fiber and the optical fiber plug 742.

[0363] In some embodiments, a second elastic buckle 7413 is provided at one end of the claw 741 facing the circuit board 300, and the second elastic buckle 7413 extends from the right side 7412 of the claw 741 toward the direction of the circuit board 300, and the second elastic buckle 7413 is fixedly connected to the right side 7412, and the through hole 7411 passes through the right side 7412, so that the optical fiber plug 742 can be inserted into the claw 741 through the through hole 7411, and the optical fiber plug 742 is limited in the left and right directions by the right side 7412.

[0364] In some embodiments, the second elastic buckle 7413 can rotate within a preset angle range, so that the second elastic buckle 743 can be clamped inward to fix the optical fiber plug 742, and can also be bent outward to remove the optical fiber plug 742.

[0365] In some embodiments, the optical fiber plug 742 includes an insert core and a fixing portion, and the outer wall of the fixing portion protrudes from the outer wall of the insert core. When the optical fiber plug 742 is inserted into the through hole 7411 of the claw 741, the insert core is inserted into the through hole 7411, and the right side surface 7412 of the claw 741 abuts against the connecting surface of the insert core and the fixing portion to limit the optical fiber plug 742 so that the fixing portion is located outside the through hole 7411.

[0366] The right side surface of the fixing part is in contact with the left side surface of the fixing piece 743, that is, the core of the optical fiber plug 742 is inserted into the claw 741, and the fixing piece 743 is abutted against the right side surface of the fixing part, and the right end surface of the fixing piece 743 is pressed against by the second elastic buckle 7413 to apply force to the fixing piece 743 and the optical fiber plug 742, so that the optical fiber plug 742 and the fixing piece 743 are fixed in the claw 741.

[0367] Fig.68 Schematic diagram of a structure of a fixing member provided according to some embodiments of the present disclosure. Fig.68 As shown, an avoidance hole 7433 is formed on the fixing member 743 , and the optical fiber connector 745 passes through the avoidance hole 7433 and is inserted into the optical fiber plug 742 to achieve the connection between the optical fiber ribbon and the optical fiber plug 742 .

[0368] In some embodiments, a pinhole is formed on the optical fiber plug 742, and the pinhole passes through the left and right sides of the optical fiber plug 742; a plurality of sockets are formed on the fixing member 743, each of which includes a first socket 7431 and a second socket 7432, the first socket 7431 is connected to the second socket 7432, and the diameter of the first socket 7431 is larger than the diameter of the second socket 7432.

[0369] Fig.69 Schematic diagram of a pin structure provided according to some embodiments of the present disclosure. Fig.69 As shown, the insertion pin 744 includes an insertion portion 7441, a connecting portion 7442 and an exposed portion 7443. The exposed portion 7443 is connected to the insertion portion 7441 through the connecting portion 7442, and the diameter of the exposed portion 7443 is greater than or equal to the diameter of the insertion portion 7441, and the diameter of the insertion portion 7441 is greater than the diameter of the connecting portion 7442.

[0370] The diameter of the first plug hole 7301 is greater than or equal to the diameter of the insertion portion 7441 , the diameter of the second plug hole 7302 is smaller than the diameter of the insertion portion 7441 , and the diameter of the second plug hole 7302 is greater than or equal to the diameter of the connection portion 7442 .

[0371] In some embodiments, in order to facilitate the taking of the plug pin 744, the diameter of the exposed portion 7443 may be larger than the diameter of the first plug hole 7431. In this way, when the plug pin 744 is inserted into the plug hole of the optical fiber plug 742 through the first plug hole 7431, the exposed portion 7443 is exposed outside the fixing member 743, and the insertion portion 7441 is inserted into the plug hole through the first plug hole 7431, and the plug pin 744 can move left and right in the plug hole and the first plug hole 7431; then the fixing member 743 is moved to clamp the connecting portion 7442 into the second plug hole 7432, and the plug pin 744 cannot move left and right in the second plug hole 7432, so that the plug pin 744 is clamped on the fixing member 743.

[0372] In some embodiments, the fiber optic plug 742 may be a MT male connector, and the plug of the external optical fiber is a corresponding MT female connector, that is, after the pin 744 is fixed to the fiber optic plug 742, one end of the pin 744 facing away from the exposed portion 7443 protrudes from the fiber optic plug 742, so that when the external optical fiber is inserted into the claw 741, the protruding pin 744 is inserted into the jack of the external optical fiber to achieve the positioning connection between the fiber optic plug 742 and the external optical fiber.

[0373] In some embodiments, the structures of the sixth fiber optic adapter 750 and the seventh fiber optic adapter 760 are the same as or similar to the fifth fiber optic adapter 740. The structures of the sixth fiber optic adapter 750 and the seventh fiber optic adapter 760 can refer to the structure of the fifth fiber optic adapter 740 disclosed in the above embodiments.

[0374] Fig.70 Schematic diagram of an exploded view of an upper shell and a lower shell provided according to some embodiments of the present disclosure. Fig.70 As shown, the electrical port end of the upper shell 201 is provided with a first connection boss 2031, the first connection boss 2031 extends from the inner side of the upper cover plate 2011 toward the circuit board 300, a first connection groove 2032 is formed on the first connection boss 2031, and an opening is formed on the left side of the first connection groove 2032. The electrical port end of the lower shell 202 is provided with a second connection boss 2033, the second connection boss 2033 extends from the inner side of the bottom plate 2021 toward the circuit board 300, a second connection groove 2034 is formed on the second connection boss 2033, and an opening is formed on the left side of the second connection groove 2034.

[0375] In some embodiments, a plurality of assembly grooves are correspondingly provided at the optical port end of the upper housing 201 and the optical port end of the lower housing 202, so as to fix the fifth optical fiber adapter 740 and the like at the optical port of the optical module through the assembly grooves.

[0376] Fig.71 FIG. 1 is a partial cross-sectional view of an optical module provided according to some embodiments of the present disclosure. Fig.71 As shown, a first shielding strip 205 is arranged on the front side of the circuit board 300, the first shielding strip 205 is arranged along the width direction of the circuit board 300, and the first shielding strip 205 is located between the gold finger 301 and the light emitting component 400; a second shielding strip 206 is arranged on the back side of the circuit board 300, the second shielding strip 206 is arranged along the width direction of the circuit board 300, and the second shielding strip 206 is located between the gold finger 301 and the light receiving component.

[0377] When the circuit board 300 is installed in the lower housing 202, the second shielding strip 206 is embedded in the second connection groove 2034, so that the lower housing 202 and the circuit board 300 are sealed at the electrical port through the second shielding strip 206. When the upper housing 201 is covered on the lower housing 202, the first shielding strip 205 is embedded in the first connection groove 2032, so that the upper housing 201 and the circuit board 300 are sealed at the electrical port through the first shielding strip 205. The first shielding strip 205 and the second shielding strip 206 on the circuit board 300 improve the EMI shielding effect at the electrical port of the optical module, but the electromagnetic waves inside the optical module can escape through the optical port of the optical module, affecting the EMI shielding effect of the optical module.

[0378] Fig.72 FIG. 1 is a partial schematic diagram of another optical module provided according to some embodiments of the present disclosure. Fig.72As shown, a wire binding member 380 is disposed in the optical module 200 , and the wire binding member 380 is used to bind the second optical fiber 721 and the third optical fiber 731 .

[0379] In some embodiments, the wiring harness 380 is connected to the circuit board 300 , and the wiring harness 380 binds the second optical fiber 721 to one side of the transmitting base 410 and binds the third optical fiber 731 to the other side of the transmitting base 410 .

[0380] Fig.73 is a schematic diagram of the structure of a wiring harness provided according to some embodiments of the present disclosure, Fig.74 FIG. 1 is a schematic diagram of assembling a wiring harness and a circuit board according to some embodiments of the present disclosure. Fig.73 and Fig.74 As shown, the wiring harness 380 includes a bridging plate 381, a first support arm 382 and a second support arm 383. The two ends of the bridging plate 381 are respectively connected to the first support arm 382 and the second support arm 383. The bridging plate 381 is located below the circuit board 300. The top surfaces of the first support arm 382 and the second support arm 383 are bonded to the back side of the circuit board 300 to fix the wiring harness 380 on the back side of the circuit board 300.

[0381] In some embodiments, a support plate 384 is formed on the bridging plate 381, and the support plate 384 extends from the top surface of the bridging plate 381 toward the front direction of the circuit board 300, and the support plate 384 is located between the first support arm 382 and the second support arm 383; a first limiting arm 385 and a second limiting arm 386 are formed on the support plate 384, and the two ends of the support plate 384 are respectively connected to the first limiting arm 385 and the second limiting arm 386, and the first limiting arm 385 and the second limiting arm 386 extend from the support plate 384 toward the upper shell 201, and the distance between the first limiting arm 385 and the second limiting arm 386 is smaller than the distance between the first support arm 382 and the second support arm 383, so that there is a gap between the first limiting arm 385 and the first support arm 382, ​​and there is a gap between the second limiting arm 386 and the second support arm 383. The support plate 384 can reinforce the connection between the first limiting arm 385 and the second limiting arm 386 and the bridging plate 381 respectively. The support plate 384 can also limit and support the first optical fiber 711 to reduce the bending angle of the first optical fiber 711, thereby effectively avoiding damage to the first optical fiber 711 due to excessive bending.

[0382] The support plate 384 , the first limiting arm 385 and the second limiting arm 386 are embedded in the mounting hole 302 , and the optical fiber connected to the light emitting component 400 is placed on the support plate 384 , and the optical fiber is supported by the support plate 384 .

[0383] The first limiting arm 385 abuts against the front side wall of the mounting hole 302, and the second limiting arm 386 abuts against the rear side wall of the mounting hole 302. The first limiting arm 385 and the second limiting arm 386 limit and restrain the second optical fiber 721 and the third optical fiber 731. The first limiting arm 385 and the second limiting arm 386 limit the second optical fiber 721 and the third optical fiber 731 in the front, back, left and right directions to protect the second optical fiber 721 and the third optical fiber 731 and reduce the risk of the second optical fiber 721 and the third optical fiber 731 being bent or squeezed.

[0384] In some embodiments, a first hook 387 is formed on the top surface of the first limiting arm 385, and the first hook 387 protrudes toward the first support arm 382; a second hook 388 is formed on the top surface of the second limiting arm 386, and the second hook 388 protrudes toward the second support arm 383. When the cable tie 380 is inserted into the mounting hole 302 from bottom to top, the first hook 387 and the second hook 388 are engaged with the front surface of the circuit board 300 to limit the cable tie 380 in the up and down directions.

[0385] Fig.75 is a schematic structural diagram of an upper housing provided according to some embodiments of the present disclosure, Fig.76 Schematic diagram of an exploded upper housing provided according to some embodiments of the present disclosure. Fig.75 and Fig.76 As shown, a heat dissipation component 207 is disposed on the top of the upper housing 201. The heat dissipation component 207 increases the heat dissipation area of ​​the upper cover plate 2011.

[0386] In some embodiments, the heat dissipation component 207 includes heat dissipation fins 2072 and a heat dissipation cover plate 2071, the heat dissipation fins 2072 are connected to the heat dissipation cover plate 2071, and the bottom of the heat dissipation fins 2072 is welded to the top of the upper housing 201. The heat dissipation fins 2072 are long, ridge-shaped protrusions formed on the bottom surface of the heat dissipation cover plate 2071. Exemplarily, the heat dissipation component 207 includes a plurality of heat dissipation fins 2072, the heat dissipation fins 2072 extend along the length direction of the upper housing 201, and form a plurality of heat dissipation channels with the heat dissipation cover plate 2071, and both ends of the heat dissipation channels are open to allow air to flow in and out of the heat dissipation channels.

[0387] In some embodiments, the heat dissipation fins 2072 and the heat dissipation cover plate 2071 can be integrally formed, and the heat dissipation fins 2072 and the upper shell 201 are not integrally formed, so that the heat dissipation component 207 has a good effect of improving the heat dissipation effect of the upper shell 201, and can also facilitate the production of the heat dissipation component 207 and ensure that the top of the optical module is flat. The bottom of the heat dissipation fins 2072 is connected to the top of the upper shell 201, and the heat dissipation cover plate 2071 is set on the top of the heat dissipation fins 2072, so that the top of the upper shell 201 is provided with heat dissipation fins, which can not only increase the heat dissipation area of ​​the top of the upper shell 201, but also form a heat dissipation channel with the function of limiting the flow direction of the air flow, so that the upper shell 201 has a higher heat dissipation efficiency. Of course, in the embodiment of the present disclosure, the heat dissipation fins 2072 can be integrally formed with the upper shell 201.

[0388] In some embodiments, the heat dissipation fins 2072 are straight fins, and the heat dissipation fins 2072 extend from one end of the heat dissipation cover plate 2071 to the other end of the heat dissipation cover plate 2071. Exemplarily, the length of the heat dissipation cover plate 2071 is greater than half of the total length of the upper housing 201. Of course, in some embodiments of the present disclosure, the length of the heat dissipation cover plate 2071 is less than or equal to half of the total length of the upper housing 201.

[0389] In some embodiments, a first limiting plate 2017 is disposed on one side of the top of the upper housing 201, and the first limiting plate 2017 is limitedly connected to the heat dissipation component 207. Exemplarily, the first limiting plate 2017 is limitedly connected to one side of the heat dissipation cover plate 2071.

[0390] In some embodiments, a second limiting plate 2018 is disposed on the other side of the top of the upper housing 201, and the second limiting plate 2018 is limitedly connected to the heat dissipation component 207. Exemplarily, the second limiting plate 2018 is limitedly connected to the other side of the heat dissipation cover plate 2071.

[0391] In some embodiments, the upper housing 201 may include an inclined plate 2016, which is located at the optical port end of the upper housing 201, and the inclined plate 2016 is connected to the upper cover plate 2011. The inclined plate 2016 is inclined toward the direction where the lower housing 202 is located, so that the height of one end of the inclined plate 2016 is higher than the height of the other end of the inclined plate 2016. The inclined plate 2016 can adjust the height of each part of the optical port end of the upper housing 201, and can also guide air so that the air flow flows to the heat dissipation component 207 more efficiently.

[0392] In some embodiments, the other end of the inclined plate 2016 extends to the channel opening of the heat dissipation channel on the heat dissipation component 207 , and the top surface of the inclined plate 2016 is inclined to allow air flow to flow into the heat dissipation channel of the heat dissipation component 207 more effectively.

[0393] In some embodiments, the bottom of one end of the first limiting plate 2017 is connected to one side of the inclined plate 2016, and the bottom of one end of the second limiting plate 2018 is connected to the other side of the inclined plate 2016. Therefore, at the inclined plate 2016, the first limiting plate 2017 and the second limiting plate 2018 can form a guide channel to guide the air flow, so that the air flow flows along the top surface of the inclined plate 2016 to the heat dissipation channel of the heat dissipation component 207.

[0394] Fig.77 FIG. 1 is a schematic diagram of another upper housing according to some embodiments of the present disclosure. Fig.77 As shown, the heat dissipation component 207 may include a heat dissipation base plate 2073 , and the heat dissipation base plate 2073 is connected to the heat dissipation fins 2072 .

[0395] In some embodiments, a welding protrusion 2019 is disposed on the top of the upper cover plate 2011, and the welding protrusion 2019 is welded to the heat dissipation base plate 2073. Exemplarily, the welding protrusion 2019 forms a "field"-shaped pattern.

[0396] 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: A circuit board having a mounting hole formed thereon; a first connection layer and a second connection layer are arranged at the edge of the mounting hole, the first connection layer is located on the front side of the circuit board, and the second connection layer is located on the back side of the circuit board; a first groove is arranged on the second connection layer, the first groove penetrates the second connection layer, and the first groove separates the second connection layer; A light emitting component is embedded in the mounting hole; the light emitting component comprises: The transmitting base has a first mounting surface formed on the top edge; the transmitting base is embedded in the mounting hole, and the first mounting surface is connected to the second connecting layer; The optical transmitting assembly is arranged on the transmitting base and is used to generate an optical signal; The transmitting cover plate is covered on the transmitting base, and the bottom of the transmitting cover plate is connected to the first connecting layer.

2. The optical module according to claim 1, characterized in that: The second connection layer at the three side edges of the mounting hole is provided with a plurality of first grooves, and the intervals between adjacent first grooves are equal or close; The first connection layer is a copper layer attached to the surface of the circuit board, and the second connection layer is a copper layer attached to the surface of the circuit board.

3. The optical module according to claim 1, characterized in that: Also included is a light receiving component, the light receiving component including a first light receiving component; A third connection layer is arranged on the circuit board, and a second groove is formed on the third connection layer; the third connection layer is connected to the first light receiving component.

4. The optical module according to claim 3, characterized in that: The first light receiving component includes a detector group; The third connection layer comprises a welding portion, the welding portion is located at a side of the third connection layer away from the mounting hole, and the detector group is arranged at the welding portion; A blocking groove is formed on the third connection layer, and the blocking groove is located at the edge of the welding portion; the blocking groove extends from the edge of the welding portion to a direction away from the third connection layer and away from the welding portion; The width of the blocking groove is smaller than the width of the second cut groove.

5. The optical module according to claim 1, characterized in that: A first baffle and a second baffle are formed on the first mounting surface, and the outer side surface of the first baffle and the outer side surface of the second baffle are assembled and connected to the mounting hole; A second mounting surface is formed between the first baffle plate and the second baffle plate, and the second mounting surface supports and connects an optical fiber fixing head or a combiner group.

6. The optical module according to claim 5, characterized in that: The combiner group includes a first combiner and a second combiner, and the first combiner and the second combiner are arranged side by side on the second mounting surface; The optical module further includes a first optical fiber, and the optical emitting component further includes a first optical fiber fixing head and a second optical fiber fixing head, wherein the first optical fiber fixing head and the second optical fiber fixing head are respectively connected to the first optical fiber; A mounting platform is formed at one end of the first mounting surface; the edge of the mounting platform forms a third mounting surface; the third mounting surface is fixedly connected to the first optical fiber fixing head and the second optical fiber fixing head, one side edge of the mounting platform is limitedly connected to the first optical fiber fixing head, and the other side edge of the mounting platform is limitedly connected to the second optical fiber fixing head.

7. The optical module according to claim 1, characterized in that: The light emitting component further comprises a TEC component and a collimating lens group; a mounting groove is formed at one end of the first mounting surface, the TEC component is arranged in the mounting groove, the light emitting component and the collimating lens group are arranged on the top of the TEC component, and the collimating lens group is located on the output light path of the light emitting component; The optical module further includes a first optical fiber, and the optical emitting component further includes a third optical fiber fixing head, and the third optical fiber fixing head is connected to the first optical fiber; A second mounting surface is also formed on the transmitting base, and a plurality of second supporting platforms are arranged on the second mounting surface. The second supporting platforms support and connect the third optical fiber fixing head.

8. The optical module according to claim 7, characterized in that: A first support platform is formed on the second mounting surface, and a first limiting column and a second limiting column are arranged on the edge of the first support platform, and the first limiting column and the second limiting column are limitedly connected to the third optical fiber fixing head; The optical emission component further includes an isolator group, which includes a first isolator bracket and a second isolator bracket, a plurality of isolators are respectively arranged on the first isolator bracket and the second isolator bracket, and the isolators are located on the optical path from the optical emission component to the first optical fiber; The first limiting column is connected to the first isolator bracket in a limiting manner, and the second limiting column is connected to the second isolator bracket in a limiting manner.

9. The optical module according to claim 5, characterized in that: The combiner group includes a first combiner and a second combiner, and the first combiner and the second combiner are arranged side by side on the second mounting surface; The optical module further includes a first optical fiber, and the optical emitting component further includes a first optical fiber fixing head and a second optical fiber fixing head, wherein the first optical fiber fixing head and the second optical fiber fixing head are respectively connected to the first optical fiber; A mounting platform is formed at one end of the first mounting surface, a first through hole and a second through hole are formed on the mounting platform, the first optical fiber fixing head is inserted into the first through hole, and the second optical fiber fixing head is inserted into the second through hole; The first optical fiber fixing head is located on the output optical path of the first combiner, and the second optical fiber fixing head is located on the output optical path of the second combiner.

10. The optical module according to claim 5, characterized in that: An assembly positioning surface is formed on the side surface of the first baffle, and the assembly positioning surface is convex toward the second baffle; The optical emitting component further comprises a third optical fiber fixing head, and the third optical fiber fixing head is connected to the first optical fiber; the assembly positioning surface is assembled and connected to the third optical fiber fixing head.

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