Optical module

Abstract

The invention provides an optical module, which comprises an upper shell, a lower shell, a circuit board, an optical component and an optical connecting component arranged on the circuit board, and is characterized in that a cavity formed by the upper shell and the lower shell is only provided with an opening for placing the optical connecting component and a golden finger on the circuit board; a mounting hole for embedding the optical component and a bonding pad group positioned on one side of the mounting hole are formed on the circuit board, and an optical device of the optical component is electrically connected with the bonding pad group through routing; the optical connection part comprises an optical fiber fixing part, a plug connector and an insertion core assembly connected with the plug connector, the optical fiber fixing part comprises a connecting part and an insertion part which are connected, a containing cavity for the plug connector to be inserted is formed in the connecting part, a cavity communicated with the containing cavity is formed in the insertion part, and the insertion core assembly is inserted into the cavity through the plug connector. And an optical fiber connected with the optical component passes through the accommodating cavity and is optically connected with the insertion core assembly. According to the optical module, the optical connection part and the golden finger are arranged on the same side, so that synchronous connection of the photoelectric port and the upper computer is realized, and the coupling precision of the optical port is improved.

Description

Technical Field

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

[0002] Optical communication technology is used in new services and application modes such as cloud computing, mobile Internet, and video. In optical communication, the optical module is a device that realizes the conversion of optical and electrical signals and is one of the key components in optical communication equipment.

[0003] One end of a traditional optical module is connected to an external optical fiber as an optical port, and the other end is connected to a host computer as an electrical port. In the communication docking system, the optical signal has much higher requirements on coupling accuracy than the electrical signal. During the plugging and unplugging of traditional optical modules, the electrical port is first connected to the host computer, and then the optical port is connected to the external optical fiber for a second time, which makes the docking process of the optical module complicated and affects the coupling accuracy of the optical port of the optical module. Summary of the invention

[0004] The embodiments of the present disclosure provide an optical module to solve the problem of low optical port coupling accuracy of the optical module.

[0005] In a first aspect, the present disclosure provides an optical module, comprising:

[0006] Lower housing;

[0007] An upper shell, covering the lower shell, the upper shell and the lower shell forming a cavity, the cavity having only one opening;

[0008] A circuit board is located in the cavity, a gold finger is formed at one end of the circuit board, a mounting hole and a pad group are formed on the circuit board, and the pad group is located on one side of the mounting hole;

[0009] An optical component, embedded in the mounting hole, wherein the optical device of the optical component is electrically connected to the pad group through wire bonding, and the optical component is used to generate or receive an optical signal;

[0010] An optical connection component is mounted on the circuit board, the optical connection component and the gold finger are located at the opening, the optical component is optically connected to the optical connection component through an optical fiber, and the optical connection component is used to transmit an optical signal; wherein the optical connection component includes:

[0011] The optical fiber fixing part comprises a connecting part and an inserting part connected to each other, wherein the connecting part is mounted on the circuit board, and the inserting part is not connected to the circuit board; a receiving cavity is formed in the connecting part, and sockets are formed at both ends of the receiving cavity; a cavity with two ends opened is formed in the inserting part, and the cavity is connected to the receiving cavity;

[0012] A ferrule assembly is inserted into the cavity through the socket, the ferrule assembly is not connected to the circuit board, and the optical fiber passes through the accommodating cavity and is optically connected to the ferrule assembly;

[0013] A connector is inserted into the accommodating cavity through the socket, the connector is not connected to the circuit board, the connector is plugged and fixed to the core assembly, and the connector is fixed in the accommodating cavity so that the core assembly can be installed in the cavity through the connector.

[0014] In a second aspect, the present disclosure provides an optical module, including:

[0015] Lower housing;

[0016] An upper shell, covering the lower shell, the upper shell and the lower shell forming a cavity, the cavity having only one opening;

[0017] A circuit board is located in the cavity, a gold finger is formed at one end of the circuit board, a mounting hole and a pad group are formed on the circuit board, and the pad group is located on one side of the mounting hole;

[0018] An optical component, embedded in the mounting hole, wherein the optical device of the optical component is electrically connected to the pad group through wire bonding, and the optical component is used to generate or receive an optical signal;

[0019] An optical connection component is mounted on the circuit board, the optical connection component and the gold finger are located at the opening, the optical component is connected to the optical connection component through an optical fiber, and the optical connection component is used to transmit an optical signal; wherein the optical connection component includes:

[0020] An optical fiber fixing member, comprising a connecting portion and an inserting portion connected to each other, wherein the connecting portion is fixed to the upper housing, the inserting portion is not connected to the circuit board, a receiving cavity is formed in the connecting portion, and sockets are formed at both ends of the receiving cavity, and a cavity with openings at both ends is formed in the inserting portion, and the cavity is connected to the receiving cavity;

[0021] A ferrule assembly is inserted into the cavity through the socket, the ferrule assembly is not connected to the circuit board, and the optical fiber passes through the accommodating cavity and is connected to the ferrule assembly;

[0022] A connector is inserted into the accommodating cavity through the socket, the connector is not connected to the circuit board, the connector is plugged and fixed to the core assembly, and the connector is fixed in the accommodating cavity so that the core assembly can be installed in the cavity through the connector.

[0023] It can be seen from the above embodiments that the optical module provided by the embodiments of the present disclosure includes an upper shell, a lower shell, a circuit board, an optical component and an optical connecting component, the upper shell is covered on the lower shell, the upper shell and the lower shell form a cavity, and the cavity has only one opening; the circuit board is located in the cavity, and a gold finger is formed at one end of the circuit board, and the gold finger is located at the opening; a mounting hole is formed on the circuit board, and the optical component is embedded in the mounting hole to achieve connection between the optical component and the circuit board; a pad group is provided on the circuit board, and the pad group is located on one side of the mounting hole, and the optical device of the optical component is electrically connected to the pad group through wiring to achieve electrical connection between the optical device and the circuit board, so that the optical component generates or receives an optical signal; the optical connecting component is installed on the circuit board, and the optical connecting component and the gold finger are located at the opening, so that the optical port and the electrical port of the optical module are located on the same side, and when the optical module is inserted into the host computer, the optoelectronic connection between the optical module and the host computer can be achieved at the same time; The optical connection component includes an optical fiber fixing part, a plug-in connector and a core plug assembly. The optical fiber fixing part includes a connecting part and an inserting part that are connected to each other. The connecting part is installed on the circuit board, and the inserting part is not connected to the circuit board. When the optical module is inserted into the host computer, the circuit board is inserted into the electrical connector of the host computer, and the inserting part of the optical connection component is inserted into the optical connector of the host computer to realize the optoelectronic connection between the optical module and the host computer; an accommodating cavity is formed in the connecting part, and sockets are formed at both ends of the accommodating cavity. A cavity with two ends open is formed in the inserting part, and the cavity is connected to the accommodating cavity. The core plug assembly is inserted into the cavity via the socket, and the plug-in connector is inserted into the accommodating cavity via the socket. The core plug assembly and the plug-in connector are plugged and fixed, so that the core plug assembly can be installed in the cavity through the plug-in connector, so as to facilitate the connection of the core plug assembly with the optical connector of the host computer; the optical fiber connecting the optical component passes through the accommodating cavity and is optically connected to the core plug assembly to realize the optical connection between the optical component and the optical connection component.

[0024] In the optical module provided by the present invention, the optical port and the electrical port are arranged at the same opening of the optical module. When the optical module is inserted into a host computer, the optical port and the electrical port are respectively connected to the host computer. One-time plugging and unplugging realizes the optoelectronic connection between the optical module and the host computer, which can avoid the coupling of the optical port and the optical fiber, making the coupling process between the optical port of the optical module and the host computer simple, thereby improving the coupling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] 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.

[0026] Figure 1A partial structural diagram of an optical communication system provided according to some embodiments of the present disclosure;

[0027] Figure 2 A partial structural diagram of a host computer provided according to some embodiments of the present disclosure;

[0028] Figure 3 A structural diagram of an optical module provided according to some embodiments of the present disclosure;

[0029] Figure 4 An exploded view of an optical module provided according to some embodiments of the present disclosure;

[0030] Figure 5 A partial structural diagram of an optical module provided according to some embodiments of the present disclosure;

[0031] Figure 6 A partial exploded view of an optical module provided according to some embodiments of the present disclosure;

[0032] Figure 7 A structural diagram of a circuit board in an optical module provided according to some embodiments of the present disclosure;

[0033] Figure 8 A partial exploded view of a light emitting component and a circuit board in an optical module provided according to some embodiments of the present disclosure;

[0034] Fig. 9 A structural diagram of a light emitting component in an optical module provided according to some embodiments of the present disclosure;

[0035] Fig.10 A partial structural diagram of a light emitting component in an optical module provided according to some embodiments of the present disclosure;

[0036] Fig.11 A structural diagram of a fixed base in an optical module provided according to some embodiments of the present disclosure;

[0037] Fig.12 A partial top view of a light emitting component in an optical module provided according to some embodiments of the present disclosure;

[0038] Fig.13 A cross-sectional view of an assembly of a light emitting component and a circuit board in an optical module according to some embodiments of the present disclosure Figure 1 ;

[0039] Fig.14 A cross-sectional view of an assembly of a light emitting component and a circuit board in an optical module according to some embodiments of the present disclosure Figure 2 ;

[0040] Fig.15A structural diagram of an optical connection component in an optical module provided according to some embodiments of the present disclosure;

[0041] Fig.16 An exploded view of an optical connection component in an optical module provided according to some embodiments of the present disclosure;

[0042] Fig.17 A structure of an optical fiber fixing member in an optical module according to some embodiments of the present disclosure Figure 1 ;

[0043] Fig.18 A structure of an optical fiber fixing member in an optical module according to some embodiments of the present disclosure Figure 2 ;

[0044] Fig.19 A structure of an optical fiber fixing member in an optical module according to some embodiments of the present disclosure Figure 3 ;

[0045] Fig. 20 A structural diagram of a ferrule assembly in an optical module provided according to some embodiments of the present disclosure;

[0046] Fig.21 A structural diagram of a connector in an optical module provided according to some embodiments of the present disclosure;

[0047] Fig. 22 A partial cross-sectional view of an optical fiber connection component in an optical module provided according to some embodiments of the present disclosure Figure 1 ;

[0048] Fig.23 A partial cross-sectional view of an optical fiber connection component in an optical module provided according to some embodiments of the present disclosure Figure 2 ;

[0049] Fig.24 A structural diagram of a support frame in an optical module provided according to some embodiments of the present disclosure;

[0050] Fig.25 A cross-sectional view of an assembly of an optical fiber connection component and a circuit board in an optical module according to some embodiments of the present disclosure Figure 1 ;

[0051] Fig.26 A cross-sectional view of an assembly of an optical fiber connection component and a circuit board in an optical module according to some embodiments of the present disclosure Figure 2 . DETAILED DESCRIPTION

[0052] Some embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. However, the described embodiments are only a part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present disclosure.

[0053] Unless the context requires otherwise, throughout the specification and claims, the term "comprising" is to be interpreted as having an open, inclusive meaning, that is, "including, but not limited to"; the terms "first" and "second" are not to be understood as indicating or implying relative importance or indicating an upper limit on quantity; the term "plurality" means two or more; the term "connected" is to be understood in a broad sense, for example, "connected" can be a fixed connection, a detachable connection, or an integral connection, and can be directly connected or indirectly connected through an intermediate medium; the use of the terms "suitable for" or "configured to" implies open and inclusive language, which does not exclude devices that are suitable for or configured to perform additional tasks or steps; descriptions such as "parallel", "perpendicular", "same", "consistent", and "flush" are not limited to absolute mathematical theoretical relationships, but also include an acceptable error range generated in practice, and also include differences based on the same design concept but due to manufacturing reasons.

[0054] 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.

[0055] 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.

[0056] 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 .

[0057] 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.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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, a light receiving component 500 and an optical connecting component 900. However, the present disclosure is not limited thereto, and in some embodiments, the optical module 200 includes one of the light emitting component 400 and the light receiving component 500.

[0065] The shell comprises an upper shell 201 and a lower shell 202. The upper shell 201 covers the lower shell 202 to form the above shell with at least one end open (right end opening 204 and / or left end opening); the outer contour of the shell is generally a square body.

[0066] In some embodiments, the lower shell 202 includes a bottom plate 2021 and two lower side plates 2022 located on both sides of the bottom plate 2021 and arranged perpendicular to the bottom plate 2021; the upper shell 201 includes a cover plate 2011, and the cover plate 2011 covers the two lower side plates 2022 of the lower shell 202 to form the above-mentioned shell.

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

[0068] The direction of the line connecting the two openings may be consistent with the length direction of the optical module 200, or may be inconsistent with the length direction of the optical module 200. For example, the opening 204 is located at the end of the optical module 200 ( Figure 3 The opening formed by the optical connecting component 900 is also located at the end of the optical module 200 ( Figure 3 The right end of the optical module 200, that is, the optical module 200 has only one opening 204, the opening 204 is an electrical port, the gold finger 301 of the circuit board 300 extends from the electrical port and is inserted into the electrical connector of the host computer 100; the opening 204 is also an optical port, which is configured to be inserted into the optical connector of the host computer 100, so that the optical components in the optical module 200 are connected to the optical connector in the host computer 100.

[0069] 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, the optical connecting component 900, 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, the optical connecting component 900, 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.

[0070] In some embodiments, the upper shell 201 and the lower shell 202 are made of metal materials to facilitate electromagnetic shielding and heat dissipation.

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

[0072] For example, the unlocking component 600 is located on the outside of the two lower side plates 2022 of the lower housing 202, and includes a 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.

[0073] 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). The chip may include a microcontroller unit (Microcontroller Unit, MCU), a laser driver chip, a transimpedance amplifier (Transimpedance Amplifier, TIA), a limiting amplifier (Limiting Amplifier, LA), a clock and data recovery chip (Clock and Data Recovery, CDR), a power management chip, and a digital signal processing (Digital Signal Processing, DSP) chip.

[0074] 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.

[0075] 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.

[0076] At least one of the light emitting component 400 or the light receiving component 500 is located on a side of the circuit board 300 away from the gold finger 301 .

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

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

[0079] Figure 5 is a partial structural diagram of an optical module provided according to some embodiments of the present disclosure, Figure 6 FIG. 1 is a partial exploded view of an optical module provided according to some embodiments of the present disclosure. Figure 5 and Figure 6 As shown, the cavity formed by the upper shell 201 and the lower shell 202 has only one opening 204, and the gold finger 301 is located at the opening 204. The light emitting component 400 and the light receiving component 500 can be arranged on the circuit board 300 along the left and right directions. The light emitting component 400 is located at the end of the circuit board 300 away from the gold finger 301, and the light receiving component 500 is located between the light emitting component 400 and the gold finger 301. The optical connecting component 900 is located at the end of the circuit board 300 close to the gold finger 301. The light emitting component 400 and the light receiving component 500 are connected through the optical fiber ribbon and the optical connecting component 900 to realize the optoelectronic synchronization of the optical module 200.

[0080] The electrical connector in the host computer 100 is electrically connected to the gold finger 301 on the circuit board 300. The host computer 100 transmits an electrical signal to the circuit board 300. The optical emitting component 400 generates an optical signal driven by the electrical signal transmitted by the circuit board 300. The optical signal is transmitted to the optical connecting component 900 via the optical fiber ribbon. The optical connecting component 900 is optically connected to the optical connector in the host computer 100. In this way, the optical signal generated by the optical emitting component 400 is transmitted to the host computer 100 via the optical fiber ribbon and the optical connecting component 900 to realize light emission.

[0081] The external optical signal transmitted by the host computer 100 is transmitted to the optical receiving component 500 via the optical connecting component 900 and the optical fiber ribbon. The optical receiving component 500 converts the optical signal into an electrical signal, which is transmitted to the host computer 100 via the gold finger 301 on the circuit board 300 to realize light reception.

[0082] In some embodiments, to avoid mutual interference between the optical fiber ribbons connecting the light emitting component 400 and the light receiving component 500, the central axis of the light emitting component 400 and the central axis of the light receiving component 500 do not coincide, so that the light emitting component 400 and the light receiving component 500 are staggered.

[0083] In some embodiments, the light receiving component 500 can be replaced by a light emitting component, that is, the optical module includes two light emitting components, and the two light emitting components and the optical connecting component 900 are arranged on the circuit board 300 along the left and right directions. The two light emitting components are respectively connected to the optical connecting component 900 through the optical fiber ribbon, and the optical signals emitted by the two light emitting components are transmitted to the optical connector of the host computer 100 via the optical connecting component 900 to realize the emission of multi-path light.

[0084] In some embodiments, to avoid mutual interference between the optical fiber ribbons connecting the two light emitting components, the central axes of the two light emitting components do not overlap, so that the two light emitting components are staggered.

[0085] The light emitting component 400 can also be replaced by a light receiving component, that is, the optical module includes two light receiving components, and the two light receiving components and the optical connecting component 900 are arranged on the circuit board 300 along the left and right directions. The two light receiving components are connected by optical fiber ribbons and the optical connecting component 900, respectively. The external optical signal transmitted by the upper computer 100 is transmitted to the two light receiving components via the optical connecting component 900 and the optical fiber ribbon. The two light receiving components convert the external optical signal into an electrical signal, and the electrical signal is transmitted to the upper computer 100 via the circuit board 300 to realize the reception of multi-path light.

[0086] In some embodiments, to avoid mutual interference between the optical fiber ribbons connecting the two light receiving components, the central axes of the two light receiving components do not overlap, so that the two light receiving components are staggered.

[0087] In some embodiments, optical components, such as a light emitting component 400 and a light receiving component 500, or two light emitting components, or two light receiving components can be directly set on the circuit board 300, and the laser of the light emitting component 400 and / or the detector of the light receiving component 500 are electrically connected to the circuit board 300 through wiring, so that the light emitting component 400 generates an optical signal and the light receiving component 500 receives an optical signal.

[0088] In some embodiments, when optical components, such as a light emitting component 400 and a light receiving component 500, or two light emitting components, or two light receiving components are directly arranged on the circuit board 300, it is easy to cause the layout space of the circuit board 300 to become smaller, which may affect the layout of electrical components on the circuit board 300. In order to ensure the layout space on the circuit board 300, the optical components and the circuit board 300 can be separated, and the optical components can be electrically connected to the circuit board 300 through a flexible circuit board.

[0089] Figure 7 is a structural diagram of a circuit board in an optical module provided according to some embodiments of the present disclosure, Figure 8 FIG. 1 is a partial exploded view of a light emitting component and a circuit board in an optical module provided according to some embodiments of the present disclosure. Figure 7 and Figure 8 As shown, when the optical component is directly set on the circuit board 300, in order to reduce the wiring length between the circuit board 300 and the optical component, a mounting hole is formed on the circuit board 300, and the optical component is embedded in the mounting hole so that the wiring surface of the laser or detector of the optical component is flush with the front side of the circuit board 300, so as to reduce the loss of the optical module.

[0090] When the optical module 200 includes a first light emitting component and a second light emitting component, a first mounting hole 303 and a second mounting hole 305 are formed on the circuit board 300. The first mounting hole 303 and the second mounting hole 305 pass through the front and back sides of the circuit board 300. The first mounting hole 303 and the second mounting hole 305 are not connected. The first light emitting component is embedded in the first mounting hole 303, and the second light emitting component is embedded in the second mounting hole 305, so that the wiring surface of the laser of the first light emitting component and the wiring surface of the laser of the second light emitting component are flush with the front side of the circuit board 300.

[0091] In some embodiments, a first solder pad group 306 is provided on the circuit board 300 at the edge near the first mounting hole 303, and the laser of the first light emitting component embedded in the first mounting hole 303 is electrically connected to the first solder pad group 306 through wire bonding to achieve electrical connection between the laser and the circuit board 300, so as to drive the first light emitting component to generate multiple laser beams.

[0092] A second solder pad group 307 is provided on the circuit board 300 at the edge near the second mounting hole 305. The laser of the second light emitting component embedded in the second mounting hole 305 is electrically connected to the second solder pad group 307 through wire bonding to realize the electrical connection between the laser and the circuit board 300, so as to drive the second light emitting component to generate multiple laser beams.

[0093] In some embodiments, when the first light emitting component is embedded in the first mounting hole 303 and the second light emitting component is embedded in the second mounting hole 305, the first light emitting component can be completely embedded in the first mounting hole 303 and the second light emitting component can be completely embedded in the second mounting hole 305. The first light emitting component can also be partially embedded in the first mounting hole 303 and the second light emitting component can also be partially embedded in the second mounting hole 305.

[0094] When the first light emitting component is partially embedded in the first mounting hole 303 and the second light emitting component is partially embedded in the second mounting hole 305, in order to limit the first light emitting component and the second light emitting component, a first limiting hole 302 and a second limiting hole 304 may also be formed on the circuit board 300, the first mounting hole 303 is located between the first limiting hole 302 and the second mounting hole 305, the second limiting hole 304 is located between the first mounting hole 303 and the second mounting hole 305, the first solder pad group 306 is located between the first limiting hole 302 and the first mounting hole 303, the limiting component of the first light emitting component is embedded in the first limiting hole 302, and the light emitting component of the first light emitting component is embedded in the first mounting hole 303, so as to limit the first light emitting component through the first limiting hole 302, thereby shortening the distance between the laser of the first light emitting component and the first solder pad group 306 on the circuit board 300.

[0095] The second solder pad group 307 is located between the second limiting hole 304 and the second mounting hole 305, the limiting component of the second light receiving component is embedded in the second limiting hole 304, and the light emitting component of the second light emitting component is embedded in the second mounting hole 305, so as to limit the second light emitting component through the second limiting hole 304, thereby shortening the distance between the laser of the second light emitting component and the second solder pad group 307 on the circuit board 300.

[0096] Reference Figure 8 When the first light emitting component is partially embedded in the first mounting hole 303, the first light emitting component is placed under the circuit board 300, and then the first light emitting component is moved from bottom to top so that the limiting component of the first light emitting component is embedded in the first limiting hole 302, and the light emitting component of the first light emitting component is embedded in the first mounting hole 303 until the shell of the first light emitting component is bonded and fixed to the back of the circuit board 300.

[0097] When the second light emitting component is partially embedded in the second mounting hole 305, the second light emitting component is placed under the circuit board 300, and then the second light emitting component is moved from bottom to top so that the limiting component of the second light emitting component is embedded in the second limiting hole 304, and the light emitting component of the second light emitting component is embedded in the second mounting hole 305 until the shell of the second light emitting component is bonded and fixed to the back of the circuit board 300.

[0098] In some embodiments, the width dimension of the first mounting hole 303 (the dimension perpendicular to the left-right direction) may be larger than the width dimension of the first limiting hole 302, the length dimension of the first mounting hole 303 (the dimension along the left-right direction) may be larger than the length dimension of the first limiting hole 302, the width dimension of the second mounting hole 305 may be larger than the width dimension of the second limiting hole 304, and the length dimension of the second mounting hole 305 may be larger than the length dimension of the second limiting hole 304.

[0099] The width dimension of the first mounting hole 303 may also be equal to the width dimension of the second mounting hole 305, the length dimension of the first mounting hole 303 may also be equal to the length dimension of the second mounting hole 305, the width dimension of the first limiting hole 302 may also be equal to the width dimension of the second limiting hole 304, and the length dimension of the first limiting hole 302 may also be equal to the length dimension of the second limiting hole 304.

[0100] Fig. 9 is a structural diagram of a light emitting component in an optical module provided according to some embodiments of the present disclosure, Fig.10 FIG. 1 is a partial structural diagram of a light emitting component in an optical module provided according to some embodiments of the present disclosure. Fig. 9 and Fig.10 As shown, when the optical module 200 includes a first light emitting component and a second light emitting component, the first light emitting component and the second light emitting component have the same structure. The first light emitting component includes a fixed base 401, a cover shell 402 and a light emitting component, the cover shell 402 covers the fixed base 401 to form a emitting cavity, and the light emitting component is located in the emitting cavity.

[0101] The width dimension of the fixed base 401 can be less than or equal to the width dimension of the first mounting hole 303. A limiting boss 409 is set at one end of the fixed base 401 away from the gold finger 301. The limiting boss 409 is embedded in the first limiting hole 302. The right end of the fixed base 401 is embedded in the first mounting hole 303. The side surface of the fixed base 401 can be bonded and fixed to the side wall of the first mounting hole 303, so that the light emitting component installed on the fixed base 401 is located in the first mounting hole 303.

[0102] In some embodiments, the top surface of the fixed base 401 can also be fixed on the back of the circuit board 300, that is, the width of the fixed base 401 is greater than the width of the first mounting hole 303, and part of the top surface of the fixed base 401 is exposed through the first mounting hole 303, so that the light emitting component can be installed on the exposed fixed base 401, so that the light emitting component is embedded in the first mounting hole 303. A limiting boss 409 is provided at one end (left end) of the fixed base 401 away from the gold finger 301, and the limiting boss 409 protrudes from the top surface of the fixed base 401, and the limiting boss 409 is embedded in the first limiting hole 302, so that the first light emitting component is limited by the limiting boss 409.

[0103] The light emitting component includes a laser group 403, a collimating lens group 404 and an optical fiber bracket 407. The laser group 403, the collimating lens group 404 and the optical fiber bracket 407 are installed on the fixed base 401 in sequence along the left-right direction. The laser group 403 is located on the left side of the fixed base 401. The laser group 403 is close to the limiting boss 409, and there is a gap between the laser group 403 and the limiting boss 409 in the left-right direction. The gap is set corresponding to the gap between the first limiting hole 302 and the first mounting hole 303, so that the laser group 403 is close to the first solder pad group 306.

[0104] The top surface of the fixed base 401 is bonded and fixed to the back surface of the circuit board 300, the limiting boss 409 is embedded in the first limiting hole 302, and the light emitting component installed on the fixed base 401 is embedded in the first mounting hole 303. The laser group 403 is close to the first solder pad group 306, and the wiring surface of the laser group 403 is flush with the top surface of the circuit board 300, so as to facilitate the electrical connection between the laser group 403 and the first solder pad group 306 through wiring.

[0105] The optical fiber bracket 407 is fixedly installed on the right side of the fixed base 401, and an emitting optical fiber ribbon 408 is fixed in the optical fiber bracket 407. The optical signal generated by the laser group 403 is transmitted from left to right to the emitting optical fiber ribbon 408 in the optical fiber bracket 407. The emitting optical fiber ribbon 408 is optically connected to the optical connecting component 900, so that the optical signal is transmitted to the optical connecting component 900 via the emitting optical fiber ribbon.

[0106] The collimating lens group 404 is located in the light emitting direction of the laser group 403 . The multi-path signal lights generated by the laser group 403 are converted into multi-path collimated lights by the collimating lens group 404 . The multi-path collimated lights are emitted into the transmitting optical fiber ribbon 408 in the optical fiber bracket 407 .

[0107] The laser group 403 includes multiple lasers, and the collimating lens group 404 includes multiple collimating lenses. Each laser emits a laser beam, and each collimating lens is arranged in the light emitting direction of each laser. The collimating lens converts the laser beam emitted by the laser into a collimated beam. Each collimated beam is transmitted to an optical fiber of the transmitting optical fiber belt 408, thereby realizing the emission of multiple light paths.

[0108] In some embodiments, the laser group 403 can emit multiple signal lights of the same wavelength, which are transmitted to the host computer 100 via the transmitting optical fiber ribbon 408 and the optical connecting component 900; the laser group 403 can also emit signal lights of multiple different wavelengths, which are transmitted to the host computer 100 via the transmitting optical fiber ribbon 408 and the optical connecting component 900.

[0109] To facilitate the transmission of the collimated light beam to the optical fiber of the transmitting optical fiber ribbon 408, the optical transmission component also includes a converging lens group 405, which is located between the collimating lens group 404 and the optical fiber bracket 407. The converging lens group 405 includes a plurality of converging lenses, each of which is arranged in the direction of the output light of each collimating lens. The converging lens converges the collimated light beam output by the collimating lens into the transmitting optical fiber ribbon 408 in the optical fiber bracket 407.

[0110] In some embodiments, when the multi-path convergent light beam emitted by the convergent lens group 405 is coupled to the optical fiber, part of the light beam may be reflected at the end face of the optical fiber, and the reflected light may return to the laser group 403 along the original path, affecting the light emitting performance of the laser. In order to prevent the light reflected from the end face of the optical fiber from returning along the original path, the optical emission component also includes an isolator group 406, which is located between the convergent lens group 405 and the optical fiber bracket 407. The isolator group 406 includes a plurality of isolators. The convergent light beam output by the convergent lens is injected into the optical fiber through the isolator, and part of the light beam is reflected at the end face of the optical fiber. The reflected light is isolated by the isolator and cannot pass through the isolator. In this way, the reflected light will not return to the laser group 403 along the original path, thereby ensuring the light emitting performance of the laser group 403.

[0111] In some embodiments, the laser group 403 also includes a semiconductor cooler (Thermoelectric cooler, TEC) 410, TEC410 is attached to the top surface of the fixed base 401, TEC410 is used to support the fixed substrate, and the substrate is used to support the fixed laser group 403 and the collimating lens group 404. In this way, the heat generated by the laser is transferred to the substrate and TEC410 in turn, and the heat dissipation of the laser is effectively achieved through TEC410, thereby preventing the temperature of the laser from affecting the wavelength of the emitted light beam.

[0112] In some embodiments, each laser of the laser group 403 can be mounted on a laser heat sink, the laser heat sink is mounted on a substrate, the substrate is mounted on a cooling surface of TEC410, and the heating surface of TEC410 is mounted on the top surface of the fixed base 401 to adjust the temperature of the laser through TEC410.

[0113] TEC410 can adjust the temperature of the laser and also raise the installation height of the laser so that the installation height of the laser is the same as the front height of the circuit board 300 to shorten the bonding length between the laser and the pad group on the circuit board 300.

[0114] In some embodiments, when TEC410 is installed on the top surface of the fixed base 401, there is a preset gap between the left end surface of TEC410 and the right end surface of the limiting boss 409, so that the gap between the first limiting hole 302 and the first mounting hole 303 is placed within the preset gap to ensure that the limiting boss 409 is embedded in the first limiting hole 302, and the laser group 403 and TEC410 are embedded in the first mounting hole 303.

[0115] In some embodiments, a positioning groove can be set on the top surface of the fixed base 401, and the positioning groove is close to the limiting boss 409. There is a preset gap between the left side of the positioning groove and the right end surface of the limiting boss 409. TEC410 is installed in the positioning groove to facilitate the installation of TEC410 on the fixed base 401 and ensure that there is a preset gap between TEC410 and the limiting boss 409.

[0116] Fig.11 FIG. 1 is a structural diagram of a fixing base in an optical module according to some embodiments of the present disclosure. Fig.11 As shown, in order to enable the fixed base 401 to install the fixed light emitting component, a mounting boss 412 is formed on the top surface of the fixed base 401, the top surface of the mounting boss 412 protrudes from the top surface of the fixed base 401, the top surface of the limiting boss 409 protrudes from the top surface of the mounting boss 412, and the converging lens group 405 and the isolator group 406 are installed on the top surface of the mounting boss 412.

[0117] Since the laser group 403 and the collimating lens group 404 are installed on TEC410, the installation height of the laser group 403 and the collimating lens group 404 is raised by TEC410. In order to ensure the coupling accuracy of the laser beam, the central axes of the laser group 403, the collimating lens group 404, the converging lens group 405, the isolator group 406 and the transmitting optical fiber ribbon 408 need to coincide. Therefore, the installation height of the converging lens group 405 and the isolator group 406 is raised by installing the boss 412, and the transmitting optical fiber ribbon 408 is fixed and raised by the optical fiber bracket 407.

[0118] Since the width of the first limiting hole 302 is smaller than that of the first mounting hole 303 , the limiting boss 409 is embedded in the first limiting hole 302 and the fixing base 401 is embedded in the first mounting hole 303 . Therefore, the width of the limiting boss 409 is smaller than that of the fixing base 401 .

[0119] In some embodiments, since the top surface of the fixing base 401 is bonded and fixed to the back surface of the circuit board 300 and the mounting boss 412 is embedded in the first mounting hole 303 , the width of the mounting boss 412 is smaller than the width of the fixing base 401 .

[0120] In some embodiments, a glue guide groove 414 is also formed on the top surface of the fixed base 401, and the glue guide groove 414 is located between the right side surface of the mounting boss 412 and the right side surface of the fixed base 401. The optical fiber bracket 407 is adhered to the glue guide groove 414 by glue. The staff injects glue into the glue guide groove 414, and then places the optical fiber bracket 407 on the fixed base 401. The glue in the glue guide groove 414 fills the gap between the optical fiber bracket 407 and the top surface of the fixed base 401, so that the optical fiber bracket 407 is adhered to the top surface of the fixed base 401.

[0121] In some embodiments, the optical fiber bracket 407 is pasted on the top surface of the fixed base 401, and the isolator group 406 is installed on the mounting boss 412. If the output end face of the isolator group 406 is in direct contact with the optical fiber end face, the optical coupling accuracy will be affected. In order to avoid direct contact between the isolator group 406 and the optical fiber end face, a avoidance boss 413 is provided on the mounting boss 412. The avoidance boss 413 extends from the right end face of the mounting boss 412 to the direction of the glue guide groove 414. The width dimension of the avoidance boss 413 is less than or equal to the width dimension of the mounting boss 412, and the height dimension of the avoidance boss 413 is less than the height dimension of the mounting boss 412, so as to facilitate the positioning and installation of the isolator group 406.

[0122] In some embodiments, for the convenience of processing, the avoidance boss 413 and the installation boss 412 are an integrated structure, and a notch is formed downwardly from the top surface of the integrated boss, and the isolator group 406 is positioned and installed through the notch.

[0123] When the optical fiber holder 407 is pasted on the top surface of the fixed base 401, the left end surface of the optical fiber holder 407 is in contact with the right end surface of the avoidance boss 413, so that there is a gap between the left end surface of the optical fiber holder 407 and the light-emitting end surface of the isolator group 406 to ensure the coupling efficiency of the optical fiber.

[0124] In some embodiments, an identification surface 415 is formed on the right end face of the fixed base 401. The identification surface 415 is tilted so that the fixed base 401 is missing a corner. The identification surface 415 is used for direction identification to facilitate identification of the direction in which the fixed base 401 is embedded in the first mounting hole 303, thereby facilitating identification of the emission direction of the laser beam.

[0125] Fig.12 is a partial top view of a light emitting component in an optical module provided according to some embodiments of the present disclosure, Fig.13 A cross-sectional view of an assembly of a light emitting component and a circuit board in an optical module according to some embodiments of the present disclosure Figure 1 , Fig.14 A cross-sectional view of an assembly of a light emitting component and a circuit board in an optical module according to some embodiments of the present disclosure Figure 2 .like Fig.12, Fig.13 and Fig.14 As shown, TEC10 is pasted on the top surface of the fixed base 401, the substrate is pasted on the cooling surface of TEC410, the laser group 403 is pasted on the substrate, and the collimating lens group 404 is pasted on the substrate along the light emitting direction of the laser; then the converging lens group 405 and the isolator group 406 are pasted on the mounting boss 412, and the optical fiber bracket 407 is pasted on the glue guide groove 414, so that there is a gap between the optical fiber bracket 407 and the isolator group 406; then the light emitting component on the fixed base 401 is embedded in the first mounting hole 303 from bottom to top, and the limiting boss 409 on the fixed base 401 is embedded in the first limiting hole 302, and then the top surface of the fixed base 401 is pasted and fixed to the back of the circuit board 300, so that the fixed base 401 and the light emitting component installed on the fixed base 401 are fixed on the circuit board 300.

[0126] Then, the laser is connected to the first pad group 306 by bonding wires, and the circuit board 300 transmits electrical signals to the laser group 403 through the first pad group 306 and the bonding wires, so that the laser group 403 generates multiple laser beams.

[0127] Multiple laser beams are converted into multiple collimated beams through the collimating lens group 404, and the multiple collimated beams are converted into multiple convergent beams through the converging lens group 405. The multiple convergent beams are directly coupled to the transmitting optical fiber ribbon 408 in the optical fiber bracket 407 through the isolator group 406. The multiple optical signals are transmitted to the optical connection component 900 through the transmitting optical fiber ribbon 408, so as to transmit the multiple optical signals to the host computer 100 through the optical connection component 900, thereby realizing the transmission of multiple lights.

[0128] In some embodiments, the optical emission component may not include the optical fiber bracket 407 and the emission optical fiber ribbon 408. The optical emission component includes a laser group 403, a collimating lens group 404, an optical multiplexer, an isolator, a converging lens and an optical connector. The optical multiplexer is located between the collimating lens group and the isolator. The laser group 403 generates multiple laser light beams driven by the electrical signal transmitted by the circuit board 300. The multiple laser light beams are converted into multiple collimated light beams by the collimating lens group 404. The multiple collimated light beams are multiplexed into one composite light by the optical multiplexer. The composite light is transmitted to the converging lens through the isolator. The composite light is converged to the optical connector through the converging lens. The optical connector is optically connected to the optical connecting component 900 through the emission optical fiber to realize the optical connection between the optical emission component and the optical connecting component 900.

[0129] Reference Figure 8, and then the cover shell 402 is covered on the fixed base 401, so that the optical emission assembly is located in the emission cavity formed by the fixed base 401 and the cover shell 402. The cover shell 402 includes a top plate and four side plates connected to the top plate, the four side plates can be placed on the top surface of the fixed base 401, and the bottom surfaces of the four side plates can be bonded to the top surface of the fixed base 401, so as to support the fixed cover shell 402 through the fixed base 401.

[0130] A first avoidance groove is formed on the side plate of the cover shell 402 facing the limiting boss 409, and the limiting boss 409 is embedded in the first avoidance groove to achieve bonding and fixation of the limiting boss 409 and the cover shell 402; a second avoidance groove is formed on the side plate of the cover shell 402 facing away from the limiting boss 409, and the second avoidance groove is used to avoid the optical fiber bracket 407, so that the transmitting optical fiber ribbon 408 fixed in the optical fiber bracket 407 passes through the second avoidance groove.

[0131] In some embodiments, when the limiting boss 409 is embedded in the first avoidance groove, the top plate of the cover shell 402 can be flush with the top surface of the limiting boss 409, and the top plate of the cover shell 402 can also be recessed in the top surface of the limiting boss 409, and the groove wall of the first avoidance groove can be bonded and fixed to the side of the limiting boss 409 to achieve a sealed connection between the cover shell 402 and the limiting boss 409.

[0132] In some embodiments, the fixed base 401 can also be first embedded in the first mounting hole 303, and the limiting boss 409 on the fixed base 401 can be embedded in the first limiting hole 302, so that the top surface of the fixed base 401 is bonded and fixed to the back surface of the circuit board 300; then the TEC410 is pasted on the top surface of the fixed base 401, and the laser group 403 and the collimating lens group 404 are bonded to the cooling surface of the TEC410 through the substrate, and there is a preset gap between the laser group 403 and the limiting boss 409.

[0133] Then, the converging lens group 405 and the isolator group 406 are pasted on the mounting boss 412 of the fixed base 401, and the optical fiber bracket 407 is pasted on the glue guide groove 414 on the fixed base 401; then, the laser in the laser group 403 is electrically connected to the first solder pad group 306 on the circuit board 300 through wire bonding to drive the laser group 403 to generate multiple laser beams; then, the cover shell 402 is covered on the fixed base 401 to place the laser group 403, the collimating lens group 404, the converging lens group 405, the isolator group 406 and the optical fiber bracket 407 in the emission cavity formed by the fixed base 401 and the cover shell 402.

[0134] Multiple laser beams are converted into multiple collimated beams via the collimating lens group 404, and the multiple collimated beams are converted into multiple convergent beams via the converging lens group 405. The multiple convergent beams are converged into the transmitting optical fiber in the optical fiber holder 407 via the isolator group 406, and the multiple beams are transmitted to the optical connection component 900 via the transmitting optical fiber belt, and the multiple beams are then transmitted to the host computer 100 via the optical connection component 900, thereby realizing the emission of multiple lights.

[0135] Reference Fig.10 In some embodiments, in order to monitor the light emitting power of the laser, the light emitting assembly further includes a photodetector group 411, and the photodetector group 411 includes a plurality of photodetectors, each of which is located in the light emitting direction of the back side of each laser, and the photodetector collects the emitted light emitted from the back side of the laser. Since the light power of the light emitted from the front side of the laser is the same as the light power of the light emitted from the back side, the light power emitted from the front side of the laser can be obtained according to the light power emitted from the back side of the laser, and the light power emitted from the laser can be adjusted according to the actual situation.

[0136] The photodetector includes a bottom surface, a top surface and a slope, and the bottom surface is pasted on the substrate to paste the photodetector on the substrate; an anode and a cathode are formed on the top surface, and the anode and the cathode are electrically connected to the first pad group 306 on the circuit board 300 through gold wires respectively. The photodetector converts the collected emission light into an electrical signal, and the electrical signal is transmitted to the circuit board 300 through the first pad group 306. The electrical signal is calculated by the electrical device on the circuit board 300 to obtain the emission light power of the laser.

[0137] In some embodiments, a groove is formed on the inclined surface of the photodetector, and an opening is formed in the groove at one end facing the laser. A photosensitive surface is formed in the groove. When the laser beam emitted from the back of the laser enters the photosensitive surface, the laser beam enters the photodetector through the photosensitive surface, and part of the laser beam may be reflected on the photosensitive surface.

[0138] In some embodiments, the photosensitive surface is tilted. If the photosensitive surface is perpendicular to the top surface of the photodetector, when the laser beam is reflected on the photosensitive surface, the reflected beam will return to the laser along the incident optical path of the laser beam, affecting the luminous performance of the laser. When the photosensitive surface is tilted, when the laser beam is reflected on the photosensitive surface, the reflected beam is set at a certain angle to the incident beam, and the reflected beam will not return to the laser along the incident optical path, thus ensuring the luminous performance of the laser.

[0139] Reference Fig.12In some embodiments, the photodetector is not located on the front or back side of the laser. Since the laser beam emitted from the back side of the laser is divergent light, the receiving direction of the photodetector is set at a preset angle to the light emitting direction from the back side of the laser, so that part of the laser beam emitted from the back side of the laser enters the photodetector to further prevent the reflected light of the laser beam on the photosensitive surface from returning to the laser.

[0140] In some embodiments, the photodetector is offset from the light emitting direction of the back side of the laser, and the offset distance between the photodetector and the light emitting direction of the back side of the laser is 2 to 3 mm, so that 1% of the laser beam emitted from the back side of the laser enters the photodetector, so as to monitor the emitted light power of the laser in real time through the photodetector.

[0141] In some embodiments, in the optical module provided by the embodiments of the present disclosure, the light emitting component and / or the light receiving component are embedded in the circuit board 300 through the mounting hole, and the light emitting component and / or the light receiving component are connected to the optical connecting component 900 through the optical fiber, and the optical connecting component 900 and the gold finger 301 are located on the same side (right side) of the optical module. When the optical module 200 is inserted into the host computer 100, the gold finger 301 on the circuit board 300 is inserted into the electrical connector of the host computer 100 to transmit the electrical signal from the host computer 100 to the circuit board 300 through the gold finger 301; the optical connecting component 900 of the optical module is inserted into the optical connector of the host computer 100 to transmit the optical signal emitted by the light emitting component to the host computer 100 through the optical connecting component 900, so that the host computer 100 has optoelectronic functions at the same time.

[0142] Fig.15 is a structural diagram of an optical connection component in an optical module provided according to some embodiments of the present disclosure, Fig.16 FIG. 1 is an exploded view of an optical connection component in an optical module provided according to some embodiments of the present disclosure. Fig.15 and Fig.16As shown, the optical connection component 900 includes an optical fiber fixing member 902, a support frame 903, a plug-in member 904 and a core assembly 905. The optical fiber fixing member 902 is fixed to the right side of the circuit board 300, and the optical fiber fixing member 902 is located above the gold finger 301; the support frame 903 is pasted on the circuit board 300, and the support frame 903 supports the optical fiber fixing member 902, so that the optical fiber fixing member 902 is fixed to the circuit board 300 through the support frame 903; the plug-in member 904 is located on the optical fiber fixing member 90 2, and the plug-in component 904 is fixed in the optical fiber fixing component 902, and the core assembly 905 is inserted into the optical fiber fixing component 902 through the plug-in component 904, so that the core assembly 905 is not connected to the plug-in component 904 and the circuit board 300, so that when the optical connection component 900 is inserted into the optical connector of the host computer 100, the core assembly 905 is connected to the plug in the optical connector to achieve optical connection between the optical connection component 900 and the optical connector, thereby achieving optical connection between the optical module 200 and the host computer 100.

[0143] Connect the core assembly 905 and the connector 904 together, and then insert the connector 904 and the core assembly 905 into the optical fiber fixing part 902 from left to right, so that the connector 904 and the optical fiber fixing part 902 are fixedly connected, so that the core assembly 905 can be installed in the optical fiber fixing part 902 through the connector 904, so as to facilitate the connection between the core assembly 905 and the optical connector in the upper computer 100; then bond the support frame 903 to the preset position on the circuit board 300, and then install the optical fiber fixing part 902 with the connector 904 and the core assembly 905 on the circuit board 300, and support the optical fiber fixing part 902 through the support frame 903, so as to realize the assembly connection between the optical connection component 900 and the circuit board 300.

[0144] Install the optical connecting component 900 on the right side of the circuit board 300, embed the first light emitting component and the second light emitting component into the mounting hole of the circuit board 300, and optically connect the first light emitting component and the second light emitting component to the optical connecting component 900 through the optical fiber ribbon, then install the assembled circuit board 300, the first light emitting component, the second light emitting component and the optical connecting component 900 in the lower shell 202, and finally cover the upper shell 201 on the lower shell 202 so that the upper shell 201 is pressed on the optical fiber fixing part 902 to ensure the assembly sealing of the optical module.

[0145] In some embodiments, the optical connection component 900 may also include a cover body, which is covered on the circuit board 300. The optical fiber fixing component 902 is wrapped by the cover body. When the upper shell 201 is covered on the lower shell 202, the upper shell 201 is pressed on the cover body to ensure the installation stability of the optical fiber fixing component 902 through the cover body.

[0146] Fig.17A structure of an optical fiber fixing member in an optical module according to some embodiments of the present disclosure Figure 1 , Fig.18 A structure of an optical fiber fixing member in an optical module according to some embodiments of the present disclosure Figure 2 , Fig.19 A structure of an optical fiber fixing member in an optical module according to some embodiments of the present disclosure Figure 3 .like Fig.17 , Fig.18 and Fig.19 As shown, the optical fiber fixing member 902 includes a connecting portion 9020 and an inserting portion 9021, the connecting portion 9020 faces the optical emitting component, the inserting portion 9021 faces the gold finger 301, the connecting portion 9020 is fixed on the circuit board 300, the inserting portion 9021 is fixedly connected to the connecting portion 9020, and the inserting portion 9021 is not connected to the circuit board 300. When the optical connecting component 900 is inserted into the optical connector of the host computer 100, the inserting portion 9021 is inserted into the optical connector.

[0147] The connecting portion 9020 includes a top plate 9022, a first side plate 9023, a second side plate 9024, a third side plate 9025 and a fourth side plate 9028. The first side plate 9023, the second side plate 9024, the third side plate 9025 and the fourth side plate 9028 are respectively fixedly connected to the inner side surface of the top plate 9022. The first side plate 9023 and the second side plate 9024 are arranged opposite to each other, and the third side plate 9025 and the fourth side plate 9028 are arranged opposite to each other. In this way, the top plate 9022, the first side plate 9023, the second side plate 9024, the third side plate 9025 and the fourth side plate 9028 form a accommodating cavity 9029, and the left and right sides of the accommodating cavity 9029 are formed with sockets, that is, the fourth side plate 9028 of the connecting part 9020 is formed with a socket, and the optical fiber ribbon connecting the first light emitting component and the second light emitting component passes through the sockets on the left and right sides of the accommodating cavity 9029 and is inserted into the insertion part 9021.

[0148] The connecting portion 9020 is provided with a socket on the bottom plate facing the circuit board 300 . When the optical fiber fixing member 902 is installed on the circuit board 300 from top to bottom, the support frame 903 is inserted into the accommodating cavity 9029 through the socket on the bottom plate to support and fix the optical fiber fixing member 902 through the support frame 903 .

[0149] Reference Fig.17A cavity 910 with openings at both ends is formed in the insertion portion 9021, and the cavity 910 is connected to the accommodating cavity 9029 in the connecting portion 9020. The core assembly 905 is inserted into the cavity 910 through the sockets on the left and right sides of the connecting portion 9020. The plug-in component 904 is installed in the accommodating cavity 9029 through the socket on the left side of the connecting portion 9020, and the core assembly 905 is blocked in the cavity 910 by the plug-in component 904, so that when the insertion portion 9021 is inserted into the optical connector of the host computer 100, the core assembly 905 is connected to the plug in the optical connector.

[0150] In some embodiments, the right end surface of the ferrule assembly 905 may be located in the cavity 910, and the right end surface of the ferrule assembly 905 may also be flush with the right end surface of the insertion portion 9021, that is, the ferrule assembly 905 does not protrude from the insertion portion 9021; the right end surface of the ferrule assembly 905 may also protrude from the right end surface of the insertion portion 9021, so that the ferrule assembly 905 protrudes from the insertion portion 9021.

[0151] When the optical fiber fixing member 902 is installed on the circuit board 300, the bottom surfaces of the first side panel 9023, the second side panel 9024 and the third side panel 9025 (facing the side of the circuit board 300) are bonded and fixed to the front surface of the circuit board 300 to achieve a fixed connection between the optical fiber fixing member 902 and the circuit board 300.

[0152] In some embodiments, a first positioning column 9026 is provided on the side of the first side plate 9023 facing the circuit board 300, a second positioning column 9027 is provided on the side of the second side plate 9024 facing the circuit board 300, and a third positioning column and a fourth positioning column are provided on the side of the third side plate 9025 facing the circuit board 300; a plurality of positioning holes are formed on the circuit board 300, and the first positioning column 9026, the second positioning column 9027, the third positioning column and the fourth positioning column are respectively inserted into the positioning holes, and the optical fiber fixing member 902 is fixedly connected to the plurality of positioning holes and the circuit board 300 through the first positioning column 9026, the second positioning column 9027, the third positioning column and the fourth positioning column to realize the fixed connection between the optical fiber fixing member 902 and the circuit board 300.

[0153] In some embodiments, the top surface of the insertion portion 9021 may be recessed in the top plate 9022, and the optical fiber fixing component 902 may also be fixed on the upper shell 201, that is, the top plate 9022 of the optical fiber fixing component 902 is fixedly connected to the inner side surface of the upper shell 201, and when the upper shell 201 is covered on the lower shell 202, the positioning column on the optical fiber fixing component 902 is inserted into the positioning hole on the circuit board 300 to realize the positioning connection between the optical fiber fixing component 902 and the circuit board 300.

[0154] Fig. 20 FIG. 1 is a structural diagram of a ferrule assembly in an optical module according to some embodiments of the present disclosure. Fig. 20As shown, the ferrule assembly 905 includes a ferrule 9050 and a fiber optic sleeve 9051. The fiber optic sleeve 9051 is fixedly connected to the left end face of the ferrule 9050. The fiber optic sleeve 9051 is connected to the inner cavity of the ferrule 9050. A transmitting fiber optic ribbon 408 is inserted into the ferrule 9050 through the fiber optic sleeve 9051.

[0155] Two pin holes 9052 are formed on the ferrule 9050 and penetrate the left and right sides. The optical fiber sleeve 9051 is located between the two pin holes 9052. The pins on the connector 904 are respectively inserted into the two pin holes 9052 of the ferrule assembly 905. The left side surface of the ferrule 9050 contacts the right side surface of the connector 904 to fix the connector 904 and the ferrule assembly 905 in connection.

[0156] After the connector 904 is fixedly connected to the ferrule assembly 905, the ferrule assembly 905 is inserted into the cavity 910, and the connector 904 is fixed in the optical fiber fixing member 902, so that the ferrule assembly 905 is placed in the insertion part 9021 through the connector 904, thereby raising the height of the ferrule assembly 905 through the optical fiber fixing member 902, so as to facilitate the connection of the ferrule assembly 905 with the optical connector in the upper computer 100.

[0157] Fig.21 FIG. 1 is a structural diagram of a connector in an optical module according to some embodiments of the present disclosure. Fig.21 As shown, in order to facilitate the insertion of the core assembly 905 into the insertion part 9021 of the optical fiber fixing part 902, the connector 904 includes a connecting plate 9040, a first mounting platform 9041 and a second mounting platform 9042, the first mounting platform 9041 and the second mounting platform 9042 are respectively fixed on the connecting plate 9040, the first mounting platform 9041 and the second mounting platform 9042 are respectively close to the two lower side plates 2022 of the lower shell 202, and there is an avoidance gap 9045 between the first mounting platform 9041 and the second mounting platform 9042, and the optical fiber ribbon connecting the two light emitting components passes through the avoidance gap 9045 and is inserted into the core assembly 905 to avoid the emitting optical fiber ribbon through the avoidance gap 9045.

[0158] A first pin 9046 is provided on the right side surface of the first mounting platform 9041 (the side facing the gold finger 301), and the first pin 9046 extends from the right side surface of the first mounting platform 9041 toward the gold finger 301; a second pin 9047 is provided on the right side surface of the second mounting platform 9042, and the second pin 9047 extends from the right side surface of the second mounting platform 9042 toward the gold finger 301.

[0159] Fig. 22 A partial cross-sectional view of an optical fiber connection component in an optical module provided according to some embodiments of the present disclosure Figure 1 .like Fig. 22As shown, when the plug connector 904 is connected to the plug core assembly 905, the first plug pin 9046 and the second plug pin 9047 are inserted into the two plug pin holes 9052 of the plug core assembly 905, so as to realize the connection between the plug connector 904 and the plug core assembly 905 through the first plug pin 9046, the second plug pin 9047 and the plug pin holes 9052. After the plug core assembly 905 is placed in the cavity 910, the plug connector 904 is fixed to the socket on the other side of the cavity 910, so as to fix the plug core assembly 905 in the cavity 910 through the plug connector 904.

[0160] Reference Fig. 20 A boss 9053 is formed on the side of the ferrule 9050 facing the light emitting component, the top surface of the boss 9053 protrudes from the top surface of the ferrule 9050, the optical fiber sleeve 9051 is fixed on the boss 9053, and the pinhole 9052 passes through the boss 9053 and the ferrule 9050. In some embodiments, the inner diameter of the accommodating cavity 9029 is greater than the inner diameter of the cavity 910, a connecting wall is provided between the accommodating cavity 9029 and the cavity 910, and the top surface of the boss 9053 protrudes from the inner wall of the cavity 910, so as to limit the boss 9053 through the connecting wall between the cavity 910 and the accommodating cavity 9029.

[0161] When fixing the ferrule assembly 905 in the cavity 910 through the plug connector 904, the ferrule assembly 905 is first inserted into the cavity 910, and then the first pin 9046 and the second pin 9047 on the plug connector 904 are inserted into the two pin holes 9052 on the ferrule assembly 905, and then the plug connector 904 drives the ferrule assembly 905 to move rightward. Since the top surface of the boss 9053 protrudes from the inner wall of the cavity 910, the plug connector 904 moves rightward until the right end surface of the boss 9053 abuts against the inner wall of the cavity 910, so that the ferrule assembly 905 is blocked in the cavity 910 through the plug connector 904.

[0162] When the ferrule assembly 905 is blocked in the cavity 910 by the plug-in component 904, in order to ensure the installation stability of the ferrule assembly 905, the plug-in component 904 is fixed in the accommodating cavity 9029 of the optical fiber fixing component 902, thereby realizing the fixed installation of the optical fiber fixing component 902, the plug-in component 904 and the ferrule assembly 905.

[0163] Fig.23 A partial cross-sectional view of an optical fiber connection component in an optical module provided according to some embodiments of the present disclosure Figure 2 .like Fig.21 and Fig.23As shown, when the connector 904 is fixed in the optical fiber fixing part 902, a first platform 9043 is formed on the side of the first mounting platform 9041 facing the lower side plate 2022, and the first platform 9043 extends from the side of the first mounting platform 9041 toward the direction of the lower side plate 2022. The size of the first platform 9043 in the left and right direction may be the same as the size of the first mounting platform 9041 in the left and right direction, or the size of the first platform 9043 in the left and right direction may be different from the size of the first mounting platform 9041 in the left and right direction.

[0164] A second inserting platform 9044 is formed on the side of the second mounting platform 9042 facing the other lower side plate 2022, and the second inserting platform 9044 extends from the side of the second mounting platform 9042 toward the other lower side plate 2022. The size of the second inserting platform 9044 in the left-right direction may be the same as the size of the second mounting platform 9042 in the left-right direction, or the size of the second inserting platform 9044 in the left-right direction may be different from the size of the second mounting platform 9042 in the left-right direction.

[0165] Reference Fig.19 In some embodiments, a first slot 9082 is formed on the inner side surface of the first side plate 9023, the first slot 9082 is arranged along the left-right direction, and an opening is formed on the left side surface of the first slot 9082; a second slot 9081 is formed on the inner side surface of the second side plate 9024, the second slot 9081 is arranged along the left-right direction, and an opening is formed on the left side surface of the second slot 9081.

[0166] After the connector 904 is inserted into the accommodating cavity 9029 through the left socket, the connector 904 is moved to the right so that the first plug platform 9043 is inserted into the first slot 9082 and the second plug platform 9044 is inserted into the second slot 9081. Then it continues to move to the right so that the first pin 9046 and the second pin 9047 on the connector 904 are inserted into the pin hole 9052 on the core assembly 905, until the connector 904 pushes the boss 9053 on the core assembly 905 to rest against the inner wall of the cavity 910, thereby realizing the assembly of the optical fiber fixing 902, the connector 904 and the core assembly 905.

[0167] After completing the assembly of the optical fiber fixing part 902, the connector 904 and the core assembly 905, when the assembled optical fiber fixing part 902 is fixedly connected to the circuit board 300 through the positioning columns and the positioning holes, in order to ensure the stability of the optical fiber fixing part 902, the support frame 903 can be placed in the accommodating cavity 9029 of the connecting part 9020, and the support frame 903 is adhered to the circuit board 300, and the optical fiber fixing part 902 is supported and fixed by the support frame 903.

[0168] Fig.24 FIG. 1 is a structural diagram of a support frame in an optical module provided according to some embodiments of the present disclosure. Fig.24As shown, the support frame 903 includes a support body 9030, the bottom surface of the support body 9030 can be pasted on the circuit board 300, and an avoidance groove 9035 is formed on the top surface of the support body 9030 and runs through the left and right sides. The transmitting optical fiber ribbon connected to the light emitting component passes through the avoidance groove 9035 and is inserted into the core assembly 905 to support the transmitting optical fiber ribbon through the avoidance groove 9035.

[0169] In some embodiments, the bottom surface of the bracket body 9030 may be provided with a first support platform 9033 and a second support platform 9034, and there is a gap between the first support platform 9033 and the second support platform 9034. The first support platform 9033 and the second support platform 9034 are fixedly connected to the surface of the circuit board 300, so that there is a gap 9036 between the bottom surface of the bracket body 9030 and the circuit board 300, and electrical components and wiring can be arranged in the gap 9036, thereby saving the layout space of the circuit board 300.

[0170] The bracket body 9030 includes a first side surface 9031 and a second side surface 9032, and the first side surface 9031 and the second side surface 9032 are respectively facing the two lower side plates 2022 of the lower shell 202, and the top surface of the first support platform 9033 is connected to the first side surface 9031, and the first support platform 9033 extends from the first side surface 9031 to the direction of the lower side plate 2022; the top surface of the second support platform 9034 is connected to the second side surface 9032, and the second support platform 9034 extends from the second side surface 9032 to the direction of the lower side plate 2022.

[0171] Fig.25 A cross-sectional view of an assembly of an optical fiber connection component and a circuit board in an optical module according to some embodiments of the present disclosure Figure 1 .like Fig.19 and Fig.25 As shown, a first notch 906 is formed on the bottom surface of the first side plate 9023 , and the first notch 906 is located between the first positioning column 9026 and the third side plate 9025 ; a second notch 907 is formed on the bottom surface of the second side plate 9024 , and the second notch 907 is located between the second positioning column 9027 and the third side plate 9025 .

[0172] A socket is formed on the bottom surface of the accommodating cavity 9029. When the optical fiber fixing component 902 is fixed on the circuit board 300 through the positioning column and the positioning hole, the support frame 903 installed on the circuit board 300 is embedded in the accommodating cavity 9029, and the top surface of the bracket body 9030 abuts against the inner side surface of the top plate 9022. The first support platform 9033 is inserted into the first notch 906, and the top surface of the first support platform 9033 is in contact with the top surface of the first notch 906. The second support platform 9034 is inserted into the second notch 907, and the top surface of the second support platform 9034 is in contact with the top surface of the second notch 907, thereby supporting the optical fiber fixing component 902 through the support frame 903.

[0173] When the support frame 903 is placed in the accommodating cavity 9029 , the support frame 903 is located between the connector 904 and the fourth side plate 9028 of the connecting portion 9020 . There may be a gap between the support frame 903 and the connector 904 , and the support frame 903 may also be connected to the connector 904 .

[0174] In some embodiments, when the support frame 903 is fixed on the circuit board 300 and the optical fiber fixing component 902 is supported by the support frame 903, a positioning mark can be set on the circuit board 300, and the positioning mark is located between two positioning holes on the side of the circuit board 300 facing the lower side plate 4022. The support frame 903 is installed on the circuit board 300 through the positioning mark to facilitate placing the first notch 906 of the optical fiber fixing component 902 on the first support platform 9033 of the support frame 903, and placing the second notch 907 of the optical fiber fixing component 902 on the second support platform 9034 of the support frame 903.

[0175] Fig.26 A cross-sectional view of an assembly of an optical fiber connection component and a circuit board in an optical module according to some embodiments of the present disclosure Figure 2 .like Fig.26 As shown, in some embodiments, when assembling the optical connection component 900, the connector 904 and the core assembly 905 are first fixedly connected through the pin and the pin hole, and then the connector 904 and the core assembly 905 are inserted through the socket on the left side of the optical fiber fixing component 902, so that the core assembly 905 is inserted into the cavity 910 of the optical fiber fixing component 902, and the connector 904 is fixed in the accommodating cavity 9029 of the optical fiber fixing component 902 through the plug-in platform and the slot, thereby realizing the assembly of the optical fiber fixing component 902, the connector 904 and the core assembly 905.

[0176] After completing the assembly of the optical fiber fixing part 902, the connector 904 and the core assembly 905, the support frame 903 is fixedly installed on the circuit board 300, and then the positioning column at the bottom of the optical fiber fixing part 902 is inserted into the positioning hole on the circuit board 300. The support frame 903 is placed in the accommodating cavity 9029 through the socket on the bottom surface of the accommodating cavity 9029 until the top surface of the support frame 903 abuts against the inner side surface of the top plate 9022, so as to support the optical fiber fixing part 902 through the support frame 903, thereby realizing the fixation of the optical fiber fixing part 902 and the circuit board 300.

[0177] In some embodiments, after the connector 904 is fixed in the optical fiber fixture 902 through the socket and the slot, in order to ensure the installation stability of the connector 904 and the core assembly 905, the left side of the connector 904 can be adhered to the right side of the support frame 903 to fix the connector 904 through the support frame 903.

[0178] After completing the assembly of the optical connection component 900, the first transmitting optical fiber ribbon connected to the first optical emitting component and the second transmitting optical fiber ribbon connected to the second optical emitting component are respectively inserted into the core assembly 905 through the support frame 903 and the connector 904, thereby realizing the optical connection between the first optical emitting component, the second optical emitting component and the optical connection component 900.

[0179] The first light emitting component is installed on the circuit board 300 through the first limiting hole 302 and the first mounting hole 303, and the first light emitting component is electrically connected to the first solder pad group 306 on the circuit board 300 through wiring, so that the first light emitting component generates multiple optical signals; the second light emitting component is installed on the circuit board 300 through the second limiting hole 304 and the second mounting hole 305, and the second light emitting component is electrically connected to the second solder pad group 307 on the circuit board 300 through wiring, so that the second light emitting component generates multiple optical signals.

[0180] The optical connection component 900 is installed on the circuit board 300, the optical connection component 900 and the gold finger 301 are located on the same side of the circuit board 300, and the optical connection component 900 can be located above the gold finger 301, the first light emitting component is connected to the optical connection component 900 through the first emitting optical fiber ribbon, and the second light emitting component is connected to the optical connection component 900 through the second emitting optical fiber ribbon.

[0181] The assembled circuit board 300, the first light emitting component, the second light emitting component and the optical connecting component 900 are then installed in the lower shell 202, and then the upper shell 201 is covered in the lower shell 202 to install the circuit board 300, the first light emitting component, the second light emitting component and the optical connecting component 900 in the cavity formed by the upper shell 201 and the lower shell 202, thereby completing the assembly of the optical module.

[0182] In some embodiments, the top plate 9022 of the optical fiber fixing part 902 may also be fixed on the inner side surface of the upper shell 201. When assembling the optical connection component 900, the connector 904 and the core assembly 905 are first fixedly connected through the pin and the pin hole, and then the connector 904 and the core assembly 905 are inserted through the socket on the left side of the optical fiber fixing part 902, so that the core assembly 905 is inserted into the insertion part 9021 of the optical fiber fixing part 902. The connector 904 is fixed in the optical fiber fixing part 902 through the plug-in table and the slot, thereby realizing the assembly of the upper shell 201, the optical fiber fixing part 902, the connector 904 and the core assembly 905.

[0183] The support frame 903 is fixedly installed on the circuit board 300. After the first light emitting component and the second light emitting component are installed on the circuit board 300 through the mounting holes, the circuit board 300, the first light emitting component and the second light emitting component are installed in the lower shell 202, and then the upper shell 201 fixed with the optical fiber fixing part 902 is placed above the circuit board 300, and then the first transmitting optical fiber ribbon connected to the first light emitting component and the second transmitting optical fiber ribbon connected to the second light emitting component are respectively inserted into the core assembly 905 through the connector 904 to realize the optical connection between the first light emitting component, the second light emitting component and the optical connecting component 900.

[0184] The upper shell 201 is then covered on the lower shell 202 so that the positioning column on the optical fiber fixing part 902 fixed on the upper shell 201 is inserted into the positioning hole of the circuit board 300, and the optical fiber fixing part 902 is supported by the support frame 903 to realize the assembly of the upper shell 201, the optical connecting component 900, the circuit board 300 and the lower shell 202.

[0185] In some embodiments, positioning columns may not be provided on the side (bottom surface) of the first side plate 9023, the second side plate 9024 and the third side plate 9025 of the connecting portion 9020 of the optical fiber fixing member 902 facing the circuit board 300, and positioning holes are not provided on the circuit board 300. When the upper shell 201 is covered on the lower shell 202, the bottom surfaces of the first side plate 9023, the second side plate 9024, the third side plate 9025 and the fourth side plate 9028 may be in contact and connected with the front side of the circuit board 300 to achieve sealing at the electrical port of the optical module.

[0186] After completing the assembly of the optical module 200, the optical module 200 is inserted into the host computer, the gold finger 301 on the circuit board 300 is electrically connected to the electrical connector in the host computer, and the optical connection component 900 is optically connected to the optical connector in the host computer, realizing the optoelectronic connection between the optical module and the host computer.

[0187] The optical module provided by the embodiment of the present disclosure includes an upper shell, a lower shell, a circuit board, a first light emitting component, a second light emitting component and an optical connecting component, the upper shell is covered on the lower shell, the upper shell and the lower shell form a cavity, and the cavity has only one opening; the circuit board is located in the cavity formed by the upper shell and the lower shell, and the gold finger on the right side of the circuit board is located at the opening of the cavity; the optical connecting component is installed on the circuit board, and the optical connecting component is located at the opening, that is, the optical connecting component and the gold finger are located on the same side of the circuit board, so that the optical port and the electrical port of the optical module are located at the same opening; the first light emitting component and the second light emitting component are installed on the circuit board through the mounting hole, and the first light emitting component and the second light emitting component are arranged in the left and right directions, and the electrical signal transmitted by the upper computer is transmitted to the first light emitting component and the second light emitting component through the circuit board, so that the first light emitting component and the second light emitting component generate optical signals.

[0188] The first optical emitting component is optically connected to the optical connecting component through the first transmitting optical fiber ribbon, and the second optical emitting component is optically connected to the optical connecting component through the second transmitting optical fiber ribbon. When the optical module is inserted into the host computer, the optical connecting component is optically connected to the optical connector in the host computer to transmit the optical signal generated by the first optical emitting component and the second optical emitting component to the host computer. The host computer can use the optical signal as a signal source for its own use, or it can separate an optical fiber from itself to transmit the optical signal to other devices.

[0189] The optical module provided by the embodiment of the present disclosure sets the optical port and the electrical port at the same opening of the optical module. When the optical module is inserted into a host computer, the optical port and the electrical port are respectively connected to the host computer. One-time plugging and unplugging realizes the optoelectronic connection between the optical module and the host computer, avoiding the coupling of the optical port with the optical fiber, making the coupling process between the optical port of the optical module and the host computer simple and improving the coupling efficiency.

[0190] 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: Lower housing; An upper shell, covering the lower shell, the upper shell and the lower shell forming a cavity, the cavity having only one opening; A circuit board is located in the cavity, a gold finger is formed at one end of the circuit board, a mounting hole and a pad group are formed on the circuit board, and the pad group is located on one side of the mounting hole; An optical component, embedded in the mounting hole, wherein the optical device of the optical component is electrically connected to the pad group through wire bonding, and the optical component is used to generate or receive an optical signal; An optical connection component is mounted on the circuit board, the optical connection component and the gold finger are located at the opening, the optical component is optically connected to the optical connection component through an optical fiber, and the optical connection component is used to transmit an optical signal; wherein the optical connection component includes: The optical fiber fixing part comprises a connecting part and an inserting part connected to each other, wherein the connecting part is mounted on the circuit board, and the inserting part is not connected to the circuit board; a receiving cavity is formed in the connecting part, and sockets are formed at both ends of the receiving cavity; a cavity with two ends opened is formed in the inserting part, and the cavity is connected to the receiving cavity; A ferrule assembly is inserted into the cavity through the socket, the ferrule assembly is not connected to the circuit board, and the optical fiber passes through the accommodating cavity and is optically connected to the ferrule assembly; A connector is inserted into the accommodating cavity through the socket, the connector is not connected to the circuit board, the connector is plugged and fixed to the core assembly, and the connector is fixed in the accommodating cavity so that the core assembly can be installed in the cavity through the connector.

2. The optical module according to claim 1, characterized in that: The connecting portion comprises: A top plate, facing the upper shell, the top plate being in contact with and connected to the upper shell; A first side plate, connected to the top plate for support, and the first side plate is fixedly connected to the circuit board; A second side plate is supported and connected to the top plate, the second side plate is fixedly connected to the circuit board, and the second side plate is arranged opposite to the first side plate; A third side plate is supported and connected to the top plate, the third side plate is fixedly connected to the circuit board, the insertion portion is connected to the third side plate, and a socket is formed on the third side plate; The fourth side plate is supported and connected to the top plate, the fourth side plate is fixedly connected to the circuit board, the fourth side plate is arranged opposite to the third side plate, another socket is formed on the fourth side plate, and the top plate, the first side plate, the second side plate, the third side plate and the fourth side plate form a accommodating cavity with the sockets at both ends.

3. The optical module according to claim 2, characterized in that: A first positioning post is provided on the side of the first side plate facing the circuit board, a second positioning post is provided on the side of the second side plate facing the circuit board, and a third positioning post and a fourth positioning post are provided on the side of the third side plate facing the circuit board. The first positioning post, the second positioning post, the third positioning post and the fourth positioning post are inserted into the positioning holes on the circuit board to realize the connection between the connecting part and the circuit board.

4. The optical module according to claim 3, characterized in that: The optical connection component also includes: A support frame is installed on the circuit board. The support frame is inserted into the accommodating cavity via a socket at the bottom of the accommodating cavity. The support frame supports and connects the top plate.

5. The optical module according to claim 4, characterized in that: A first notch is formed on a side of the first side plate facing the circuit board, and the first notch is located between the first positioning column and the third side plate; A second notch is formed on a side of the second side plate facing the circuit board, and the second notch is located between the second positioning column and the third side plate; The top surface of the support frame abuts against the inner side surface of the top plate, and the bottom end of the support frame is inserted into the first notch and the second notch.

6. The optical module according to claim 2, characterized in that: The plug-in connector comprises: Connecting plate; A first mounting platform is located on the connecting plate, a first pin is arranged on a side of the first mounting platform facing the gold finger, and the first pin is inserted into the plug core assembly; a first plug platform is formed on one side of the first mounting platform, and the first plug platform is inserted into a first slot on the inner side surface of the first side plate; A second mounting platform is located on the connecting plate, with a gap between the second mounting platform and the first mounting platform; a second pin is provided on the side of the second mounting platform facing the gold finger, and the second pin is inserted into the plug core assembly; a second plugging platform is formed on one side of the second mounting platform, the first mounting platform and the second mounting platform are located between the first plugging platform and the second plugging platform, and the second plugging platform is inserted into the second slot on the inner side surface of the second side panel.

7. The optical module according to claim 1, characterized in that: A first mounting hole and a second mounting hole are formed on the circuit board, the first mounting hole is far away from the gold finger, and the second mounting hole is located between the first mounting hole and the gold finger; a first solder pad group and a second solder pad group are provided on the circuit board, the first solder pad group is located on one side of the first mounting hole, and the second solder pad group is located on one side of the second mounting hole; The optical component includes a first light emitting component and a second light emitting component. The first light emitting component is embedded in the first mounting hole, and the optical device of the first light emitting component is electrically connected to the first pad group through wire bonding. The second light emitting component is embedded in the second mounting hole, and the optical device of the second light emitting component is electrically connected to the second pad group through wire bonding.

8. The optical module according to claim 7, characterized in that: The central axis of the first mounting hole along the light emission direction, the central axis of the second mounting hole along the light emission direction, and the central axis of the circuit board along the light emission direction do not coincide with each other.

9. An optical module, characterized in that: include: Lower housing; An upper shell, covering the lower shell, the upper shell and the lower shell forming a cavity, the cavity having only one opening; A circuit board is located in the cavity, a gold finger is formed at one end of the circuit board, a mounting hole and a pad group are formed on the circuit board, and the pad group is located on one side of the mounting hole; An optical component, embedded in the mounting hole, wherein the optical device of the optical component is electrically connected to the pad group through wire bonding, and the optical component is used to generate or receive an optical signal; An optical connection component is mounted on the circuit board, the optical connection component and the gold finger are located at the opening, the optical component is connected to the optical connection component through an optical fiber, and the optical connection component is used to transmit an optical signal; wherein the optical connection component includes: An optical fiber fixing member, comprising a connecting portion and an inserting portion connected to each other, wherein the connecting portion is fixed to the upper housing, the inserting portion is not connected to the circuit board, a receiving cavity is formed in the connecting portion, and sockets are formed at both ends of the receiving cavity, and a cavity with openings at both ends is formed in the inserting portion, and the cavity is connected to the receiving cavity; A ferrule assembly is inserted into the cavity through the socket, the ferrule assembly is not connected to the circuit board, and the optical fiber passes through the accommodating cavity and is connected to the ferrule assembly; A connector is inserted into the accommodating cavity through the socket, the connector is not connected to the circuit board, the connector is plugged and fixed to the core assembly, and the connector is fixed in the accommodating cavity so that the core assembly can be installed in the cavity through the connector.

10. The optical module according to claim 9, characterized in that: The inner diameter of the accommodating cavity is greater than the inner diameter of the hollow cavity, and a connecting wall is provided between the accommodating cavity and the hollow cavity; A boss is arranged at one end of the plug core assembly facing the plug connector, and the boss abuts against the connecting wall to limit the position of the plug core assembly.

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