PCBA board of optical module and optical module

Abstract

The utility model discloses a PCBA board of an optical module and the optical module, the PCBA board of the optical module comprises a circuit board, the circuit board is provided with a first abdicating opening used for abdicating the installation of a first metal shell or a second metal shell, the circuit board is provided with an electrical interface circuit, a DSP chip, a Driver electrical chip and a TIA electrical chip, the DSP chip is electrically connected with the electrical interface circuit, the Driver electrical chip is electrically connected with the Driver electrical chip, and the TIA electrical chip is electrically connected with the Driver electrical chip. The output end of the DSP chip is electrically connected with the input end of the Driver electric chip, the output end of the Driver electric chip is used for being electrically connected with a laser, the input end of the DSP chip is connected with the output end of the TIA electric chip, and the input end of the TIA electric chip is used for being electrically connected with a PD detector. The optical module comprises a base and a light emitting engine and further comprises a metal shell and a PCBA board, the PCBA board is installed on the base, and the metal shell is embedded in a first receding opening of the PCBA board. According to the utility model, the design and processing of the PCBA board are completed according to the design requirements. Through the combination of the PCBA provided by the utility model and two sets of optical paths (a 400G FR4 optical path and a 400G DR4 optical path), two types of modules can be formed.

Description

Technical Field

[0001] The utility model belongs to the technical field of optical communication, and in particular relates to a PCBA board of an optical module and an optical module. Background Art

[0002] In recent years, the construction of data centers has gradually increased, and the data exchange within and between data centers has also increased. The two 400G optical modules in the related technology, namely 400G FR4 and 400G DR4 optical modules, are used in this scenario. In terms of transmission distance, 400G DR4 can transmit 6 kilometers, and 400G DR4 can transmit 500 meters. Inside the module, the two optical modules have the same interface, both of which are standard QSFP-DD packages. The circuit design of the two modules is basically the same, but the optical path is different. Therefore, this field urgently needs to consider designing a PCBA board structure to be compatible with the production of the two modules, even if the two modules use the same PCBA board structure. Utility Model Content

[0003] The utility model aims to overcome at least one defect in the prior art and provides a PCBA board of an optical module and an optical module.

[0004] The technical solution of the utility model is implemented as follows: the utility model discloses a PCBA board of an optical module, including a circuit board, the circuit board is provided with a first make way opening for making way for the installation of a first light emission engine mounting shell or a second light emission engine mounting shell, the circuit board is provided with an electrical interface circuit, a DSP chip, a Driver electrical chip and a TIA electrical chip, the DSP chip is electrically connected to the electrical interface circuit, the output end of the DSP chip is electrically connected to the input end of the Driver electrical chip, the output end of the Driver electrical chip is used to be electrically connected to a laser, the input end of the DSP chip is connected to the output end of the TIA electrical chip, and the input end of the TIA electrical chip is used to be electrically connected to a PD detector.

[0005] Furthermore, the PCBA board is provided with an installation area for installing a DEMUX splitter or a second optical fiber array;

[0006] Or / and, the circuit board is further provided with a second clearance opening for making way for the installation of the DEMUX splitter;

[0007] Or / and, the first clearance opening is located at one side of the circuit board and passes through the side wall of the circuit board;

[0008] Or / and, the electrical interface circuit is located at one end of the circuit board, and the DSP chip is located between the electrical interface circuit and the first clearance opening;

[0009] Or / and, an MCU is also provided on the circuit board, and the MCU is electrically connected to the DSP chip and the electrical interface circuit.

[0010] The utility model also discloses an optical module, including a base and a first optical emission engine, and also including a first optical emission engine mounting shell and the PCBA board as described above, wherein the PCBA board is mounted on the base, and the first optical emission engine mounting shell is embedded in a first clearance opening of the PCBA board, and the first optical emission engine includes a MUX combiner and an optical emission component, and the optical emission component and the MUX combiner are mounted in the first optical emission engine mounting shell, so that the multi-channel laser energy emitted by the optical emission component is incident on the MUX combiner, and after being combined by the MUX combiner, is combined and enters the first optical fiber.

[0011] Further, one end of the first optical fiber is connected to a TOSA adapter, the TOSA adapter is fixedly mounted on an LC optical interface on a base, and the other end of the first optical fiber is connected to a first optical fiber connector, which is fixedly mounted in a mounting housing of the first optical transmission engine;

[0012] Or / and, the first light emission engine mounting housing is a metal housing.

[0013] Furthermore, an isolator is installed in the first optical transmission engine installation housing, and the isolator is located on the optical path between the first optical fiber connector and the MUX combiner.

[0014] Furthermore, the optical module of the utility model also includes a first optical receiving engine, which includes a second optical fiber, a DEMUX splitter and a multi-channel PD detector. The multi-channel lasers in the second optical fiber are split by the DEMUX splitter and divided into multiple channels of light, which enter the multi-channel PD detector one by one.

[0015] The DEMUX splitter is bonded to the mounting area on the PCBA board.

[0016] Furthermore, the first optical emission engine includes four lasers LD1 to LD4, and the emitted four lasers are combined by MUX and then merged into one optical fiber.

[0017] Furthermore, the first optical receiving engine includes 4 PD detectors. The four laser beams in the optical fiber are demultiplexed by DeMUX and divided into four beams that enter PD1 to PD4 respectively, completing the conversion of optical signals into electrical signals.

[0018] Furthermore, one end of the second optical fiber is connected to a ROSA adapter, the ROSA adapter is mounted on an LC optical interface on a base, the other end of the second optical fiber is connected to a second optical fiber connector, and the second optical fiber connector is connected to a DEMUX splitter.

[0019] The utility model also discloses an optical module, including a base and a second light emitting engine, and also including a second light emitting engine mounting shell and the PCBA board as described above, wherein the PCBA board is mounted on the base, and the second light emitting engine mounting shell is embedded in a first clearance opening of the PCBA board, and the second light emitting engine includes a first optical fiber array and an optical emission component, and the optical emission component and the first optical fiber array are mounted in the second light emitting engine mounting shell, so that the multi-channel laser energy emitted by the optical emission component is respectively incident on the end face of the first optical fiber array in a one-to-one correspondence, and the pigtail of the first optical fiber array is connected to the optical fiber component.

[0020] Furthermore, the optical module of the utility model also includes a second optical receiving engine, which includes a second optical fiber array and a multi-channel PD detector, the second optical fiber array is used to receive multi-channel lasers and transmit them to the multi-channel PD detectors one by one, and the pigtail of the second optical fiber array is connected to the optical fiber assembly;

[0021] Or / and, the optical fiber assembly is connected to the MPO interface provided on the base.

[0022] The second optical fiber array is bonded to the mounting area on the PCBA board.

[0023] Furthermore, the second optical emission engine includes four lasers, and the lights emitted by the four lasers respectively enter the first optical fiber array (four optical fibers), and the first optical fiber array is connected to the optical fiber interface MPO.

[0024] Furthermore, the second optical receiving engine includes 4-channel PD detectors, and the 4-channel light at the receiving end enters the 4-channel PD respectively from the second optical fiber array (four-channel optical fiber) to complete the conversion of optical signals into electrical signals.

[0025] Furthermore, the optical module of the utility model also includes a cover plate, which is fixedly connected to the base, and the PCBA board is arranged between the base and the cover plate.

[0026] The utility model has at least the following beneficial effects: the PCBA board of the optical module of the utility model includes a circuit board, the circuit board is provided with a first clearance opening for making way for the installation of a first optical emission engine installation shell or a second optical emission engine installation shell, the circuit board is provided with an electrical interface circuit, a DSP chip, a Driver electrical chip and a TIA electrical chip, the DSP chip is electrically connected to the electrical interface circuit, the output end of the DSP chip is electrically connected to the input end of the Driver electrical chip, the output end of the Driver electrical chip is used to be electrically connected to a laser, the input end of the DSP chip is connected to the output end of the TIA electrical chip, and the input end of the TIA electrical chip is used to be electrically connected to a PD detector. The utility model designs the PCBA board according to the optical paths of 400G FR4 and 400GDR4 optical modules, so that it can be compatible with the production of the two modules, even if the two modules can use the same PCBA board structure.

[0027] By combining the PCBA of the utility model with two sets of optical paths (the optical path of 400G FR4 and the optical path of 400G DR4), two modules can be formed, that is, the utility model can use the same PCBA to make 400G FR4 and 400GDR4 optical modules. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 A schematic diagram of the structure of a PCBA board of an optical module provided in one embodiment of the utility model (the circuit on the PCBA board is not shown);

[0030] Figure 2 A schematic diagram of the PCBA and optical path of a 400G FR4 optical module provided in one embodiment of the utility model;

[0031] Figure 3 A schematic diagram of the structure of a 400G FR4 optical module provided by an embodiment of the utility model;

[0032] Figure 4 A schematic diagram of the structure of a 400G FR4 optical module provided in another embodiment of the present utility model;

[0033] Figure 5 for Figure 4 A partial enlarged view of

[0034] Figure 6 A schematic diagram of the PCBA and optical path of a 400G DR4 optical module of an optical module provided in an embodiment of the utility model;

[0035] Figure 7 A schematic diagram of the structure of a 400G DR4 optical module of an optical module provided by an embodiment of the utility model;

[0036] Figure 8 A schematic diagram of the structure of a 400G DR4 optical module of an optical module provided by another embodiment of the utility model;

[0037] Fig. 9 for Figure 8 A partial enlarged view of

[0038] Fig.10 Functional block diagram for compatible 400G FR4 optical module and 400G DR4 optical module;

[0039] Fig.11 A schematic diagram of a 400G FR4 transmitting optical path provided by an embodiment of the utility model;

[0040] Fig.12 A schematic diagram of the optical path of a 400G FR4 receiving portion provided by an embodiment of the utility model;

[0041] Fig.13 A schematic diagram of the optical path of a 400G DR4 transmission part provided in one embodiment of the utility model;

[0042] Fig.14 A schematic diagram of the optical path of a 400G DR4 receiving portion provided in one embodiment of the utility model.

[0043] In the accompanying drawings, 1 is a PCBA board, 1a is a circuit board, 1b is a first clearance opening, 1c is a second clearance opening, 1d is an installation area, 2 is a first optical launch engine installation shell, 3 is a second optical launch engine installation shell, 4 is a base, 5 is a MUX combiner, 6 is an optical launch assembly, 7 is a first optical fiber, 8 is a TOSA adapter, 9 is a DEMUX splitter, 10 is a second optical fiber, 11 is a ROSA adapter, 12 is, 13 is a pull ring, 14 is a first optical fiber array, 15 is a second optical fiber array, 16 is an optical fiber assembly, 17 is an MPO interface, 18 is a first optical fiber connector, 19 is a second optical fiber connector, 20 is a DSP chip, and 21 is an electrical interface circuit. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0045] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0046] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; in the description of the present utility model, unless otherwise specified, "multiple" and "several" mean two or more.

[0047] Embodiment 1

[0048] See also Figures 1 to 9 The embodiment of the utility model provides a PCBA board of an optical module, including a circuit board 1a, wherein the circuit board 1a is provided with a first clearance opening 1b for making way for the installation of a first light emission engine mounting shell 2 or a second light emission engine mounting shell 3, and the circuit board 1a is provided with an electrical interface circuit 21 (i.e., a gold finger), a DSP chip 20, a Driver electrical chip and a TIA electrical chip, wherein the DSP chip 20 is electrically connected to the electrical interface circuit 21, the output end of the DSP chip 20 is electrically connected to the input end of the Driver electrical chip, the output end of the Driver electrical chip is used to be electrically connected to a laser, the input end of the DSP chip 20 is connected to the output end of the TIA electrical chip, and the input end of the TIA electrical chip is used to be electrically connected to a PD detector.

[0049] An MCU is also provided on the circuit board 1 a , and the MCU is electrically connected to the DSP chip 20 and the electrical interface circuit 21 .

[0050] In some embodiments, the PCBA board 1 is provided with a mounting area 1d for bonding the DEMUX splitter 9 or the second optical fiber array 15 .

[0051] In some embodiments, the circuit board 1 a is further provided with a second clearance opening 1 c for accommodating the DEMUX splitter 9 .

[0052] In some embodiments, the first clearance opening 1 b is located on one side of the circuit board 1 a and passes through the side wall of the circuit board 1 a .

[0053] In some embodiments, the electrical interface circuit 21 is located at one end of the circuit board 1 a , and the DSP chip 20 is located between the electrical interface circuit 21 and the first clearance opening 1 b .

[0054] The electrical signals of the 400G FR4 optical module and the 400G DR4 optical module are both 8-channel 53Gbps high-speed electrical signals, and the optical signals are 4-channel 106Gbps optical signals. There is a DSP inside, which acts as a gear box.

[0055] The optical path of 400G FR4 is to combine or split 4 CWDM4 light waves through MUX / DEMUX, and the transmission medium is 2 single-mode optical fibers, one for the transmitter and one for the receiver. The optical path of 400G DR4 is 4 parallel 1310nm light waves, which need to be transmitted in parallel using 8 single-mode optical fibers.

[0056] Embodiment 2

[0057] See also Figures 2 to 5 This embodiment also discloses an optical module, including a base 4 and a first optical emission engine, and also including a first optical emission engine mounting shell 2 and a PCBA board 1 as described in Example 1, wherein the PCBA board 1 is mounted on the base 4, and the first optical emission engine mounting shell 2 is embedded in the first clearance opening 1b of the PCBA board 1, and the first optical emission engine includes a MUX combiner 5 and an optical emission component 6, and the optical emission component 6 and the MUX combiner 5 are mounted in the first optical emission engine mounting shell 2, so that the multi-channel laser energy emitted by the optical emission component 6 is incident on the MUX combiner 5, and after being combined by the MUX combiner 5, it is combined and enters the first optical fiber 7.

[0058] The first light emission engine mounting housing 2 is required to have good heat dissipation and be not easily deformed. Preferably, the first light emission engine mounting housing 2 is a metal housing.

[0059] The shape of the first light emission engine installation housing 2 is adapted to the first clearance opening 1b. The internal structure of the first light emission engine installation housing 2 is designed according to the optical path required to be set, and is used to install the internal optical elements.

[0060] The first light emission engine installation housing 2 is fixedly connected to the PCBA board 1. The first light emission engine installation housing 2 may be provided with a slot, and the PCBA board 1 is embedded in the slot of the first light emission engine installation housing 2.

[0061] A collimating lens is provided between the optical emitting component 6 and the MUX combiner 5 . The collimating lens corresponds to the laser one by one. The laser is used to emit laser light and emit it to the MUX combiner 5 after being collimated by the corresponding collimating lens.

[0062] In some embodiments, one end of the first optical fiber 7 is connected to a TOSA adapter 8, and the TOSA adapter 8 is fixedly mounted on the LC optical interface 12 on the base 4. The other end of the first optical fiber 7 is connected to a first optical fiber connector 18, and the first optical fiber connector 18 is fixedly mounted in the first optical transmission engine mounting housing 2.

[0063] In some embodiments, an isolator is further installed in the first optical transmission engine mounting housing 2 , and the isolator is located on the optical path between the first optical fiber connector 18 and the MUX combiner 5 .

[0064] In some embodiments, the optical module of the utility model also includes a first optical receiving engine, which includes a second optical fiber 10, a DEMUX splitter 9 and a multi-channel PD detector. The multi-channel lasers in the second optical fiber 10 are split by the DEMUX splitter 9 and divided into multiple channels of light, which enter the multi-channel PD detector one by one.

[0065] The DEMUX splitter 9 is bonded to the mounting area 1d on the PCBA board 1. The second light emission engine mounting housing 3 is fixedly connected to the PCBA board 1. The second light emission engine mounting housing 3 may be provided with a slot, and the PCBA board 1 is embedded in the slot of the second light emission engine mounting housing 3.

[0066] In some embodiments, one end of the second optical fiber 10 is connected to a ROSA adapter 11, and the ROSA adapter 11 is mounted on an LC optical interface 12 on a base 4; the other end of the second optical fiber 10 is connected to a second optical fiber connector 19, and the second optical fiber connector 19 is connected to a DEMUX splitter 9.

[0067] In some embodiments, the optical module of the present invention further includes a cover plate, which is fixedly connected to the base 4 , and the PCBA board 1 is disposed between the base 4 and the cover plate.

[0068] Fig.11 This is a block diagram of the optical path of the 400G FR4 transmission part. The four lasers on the right send four lights that enter the MUX and are then combined into one optical fiber for transmission.

[0069] Fig.12 This is the optical path diagram of the receiving part of 400G FR4. After passing through the DeMUX, the 4 light paths in the optical fiber are divided into 4 light paths and enter the 4 PDs respectively to complete the conversion of electrical signals to optical signals.

[0070] Embodiment 3

[0071] See also Figures 6 to 9 The present embodiment also discloses an optical module, including a base 4 and a second optical emission engine, and also including a second optical emission engine mounting shell 3 and a PCBA board 1 as described in the first embodiment, wherein the PCBA board 1 is mounted on the base 4, and the second optical emission engine mounting shell 3 is embedded in the first clearance opening 1b of the PCBA board 1, and the second optical emission engine includes a first optical fiber array 14 and an optical emission component 6, wherein the optical emission component 6 and the first optical fiber array 14 are mounted in the second optical emission engine mounting shell 3, so that the multi-channel laser energy emitted by the optical emission component 6 is incident on the end face of the first optical fiber array 14 one by one, and the pigtail of the first optical fiber array 14 is connected to the optical fiber component 16.

[0072] The second light emission engine installation housing 3 is required to have good heat dissipation and be not easily deformed. Preferably, the second light emission engine installation housing 3 is a metal housing.

[0073] The shape of the second light emission engine installation housing 3 is adapted to the first clearance opening 1b. The internal structure of the second light emission engine installation housing 3 is designed according to the optical path required to be set, and is used to install the internal optical elements.

[0074] The second light emission engine mounting housing 3 is fixedly connected to the PCBA board 1 .

[0075] In some embodiments, the optical module of the present invention also includes a second light receiving engine, which includes a second optical fiber array 15 and a multi-channel PD detector. The second optical fiber array 15 is used to receive multi-channel lasers and transmit them one by one to the multi-channel PD detector. The pigtail of the second optical fiber array 15 is connected to the optical fiber assembly 16.

[0076] The second optical fiber array 15 is bonded to the mounting area 1 d on the PCBA board 1 .

[0077] The optical fiber assembly 16 is connected to the MPO interface 17 provided on the base 4. The optical fiber assembly 16 is inserted into the MPO interface 17.

[0078] In some embodiments, the optical module of the utility model further comprises a cover plate, the cover plate is fixedly connected to the base 4, and the PCBA board 1 is arranged between the base 4 and the cover plate. The optical module further comprises a pull ring 13, the pull ring 13 is connected to the base 4.

[0079] Fig.13 This is the optical path diagram of the transmission part of 400G DR4. The light emitted by the four lasers enters their respective optical fibers and is directly emitted through the MPO interface 17. Fig.14 This is the optical path diagram of the receiving part of 400G DR4. Four light beams come in from the MPO optical interface, pass through their respective optical fibers, and then enter the PD to complete the conversion from optical signals to electrical signals.

[0080] For 400G FR4 and DR4, the electrical PCBA including all electrical chips are the same. So to make 400G FR4, the optical path of FR4 and PCBA are assembled together; to make DR4, the optical path of DR4 and PCBA are assembled together.

[0081] See also Fig.10 , Fig.10 The upper part is the transmitting end of the module. The 8-channel 53Gbps signal is processed by DSP into 4-channel 106Gbps high-speed signal and input to the Driver. The Driver drives the 4-channel laser to emit light and converts the electrical signal into 4-channel 106Gbps optical signal. Fig.10 The lower part is the receiving end of the module. The four 106Gbps optical signals are converted into electrical signals by the PD, and then input into the DSP through the TIA. After being processed by the DSP, they are output as eight 53Gbps electrical signals.

[0082] The design method of the optical module of the utility model includes:

[0083] Step 1: Complete the design and processing of PCBA according to the design requirements.

[0084] Step 2: If you want to make a 400G FR4 module, follow Fig.10 way, Fig.11 and Fig.12 The optical path and PCBA shown complete the assembly.

[0085] If you want to make a 400G DR4 module, follow Fig.10 way, Fig.13 and Fig.14 The optical path and PCBA shown complete the assembly.

[0086] Step 3: Install the light engine assembled in step 2 into the structural housing to complete the assembly of the module.

[0087] The transmitting part of the optical path and the receiving part of the optical path are arranged side by side.

[0088] The utility model adopts the above solution to complete the design of two modules. Based on the COB process, two modules can be formed by combining the PCBA of the utility model and two sets of optical paths.

[0089] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A PCBA board of an optical module, comprising a circuit board, characterized in that: The circuit board is provided with a first clearance opening for making way for the installation of a first light emission engine mounting shell or a second light emission engine mounting shell. The circuit board is provided with an electrical interface circuit, a DSP chip, a Driver electrical chip and a TIA electrical chip. The DSP chip is electrically connected to the electrical interface circuit, the output end of the DSP chip is electrically connected to the input end of the Driver electrical chip, the output end of the Driver electrical chip is used to be electrically connected to a laser, the input end of the DSP chip is connected to the output end of the TIA electrical chip, and the input end of the TIA electrical chip is used to be electrically connected to a PD detector.

2. The PCBA board of the optical module according to claim 1, characterized in that: The PCBA board is provided with an installation area for installing a DEMUX splitter or a second optical fiber array; Or / and, the circuit board is further provided with a second clearance opening for making way for the installation of the DEMUX splitter; Or / and, the first clearance opening is located at one side of the circuit board and passes through the side wall of the circuit board; Or / and, the electrical interface circuit is located at one end of the circuit board, and the DSP chip is located between the electrical interface circuit and the first clearance opening; Or / and, an MCU is also provided on the circuit board, and the MCU is electrically connected to the DSP chip and the electrical interface circuit.

3. An optical module, comprising a base and a first optical emission engine, characterized in that: It also includes a first optical emission engine installation shell and a PCBA board as described in claim 1 or 2, wherein the first optical emission engine installation shell is embedded in a first clearance opening of the PCBA board, and the PCBA board is installed on the base. The first optical emission engine includes a MUX combiner and an optical emission component, and the optical emission component and the MUX combiner are installed in the first optical emission engine installation shell so that the multi-channel laser energy emitted by the optical emission component is incident on the MUX combiner, and after being combined by the MUX combiner, it is combined and enters the first optical fiber.

4. The optical module according to claim 3, wherein: One end of the first optical fiber is connected to a TOSA adapter, the TOSA adapter is fixedly mounted on an LC optical interface on a base, and the other end of the first optical fiber is connected to a first optical fiber connector, the first optical fiber connector is fixedly mounted in a mounting housing of the first optical transmission engine; Or / and, the first light emission engine mounting housing is a metal housing.

5. The optical module according to claim 4, wherein: An isolator is also installed in the first optical transmission engine installation housing, and the isolator is located on the optical path between the first optical fiber connector and the MUX combiner.

6. The optical module according to claim 3, wherein: It also includes a first optical receiving engine, which includes a second optical fiber, a DEMUX splitter and a multi-channel PD detector. The multi-channel lasers in the second optical fiber are split by the DEMUX splitter and divided into multiple channels of light that enter the multi-channel PD detector one by one.

7. The optical module according to claim 6, wherein: One end of the second optical fiber is connected to a ROSA adapter, and the ROSA adapter is mounted on an LC optical interface on a base. The other end of the second optical fiber is connected to a second optical fiber connector, and the second optical fiber connector is connected to a DEMUX splitter.

8. An optical module, comprising a base and a second optical emission engine, characterized in that: It also includes a second light emitting engine mounting shell and a PCBA board as described in claim 1 or 2, wherein the PCBA board is mounted on the base, and the second light emitting engine mounting shell is embedded in a first clearance opening of the PCBA board, and the second light emitting engine includes a first optical fiber array and an optical emission component, and the optical emission component and the first optical fiber array are mounted in the second light emitting engine mounting shell, so that the multi-channel laser energy emitted by the optical emission component is incident on the end face of the first optical fiber array respectively and one by one, and the pigtail of the first optical fiber array is connected to the optical fiber component.

9. The optical module according to claim 8, wherein: It also includes a second optical receiving engine, which includes a second optical fiber array and a multi-channel PD detector, the second optical fiber array is used to receive multi-channel lasers and transmit them to the multi-channel PD detectors one by one, and the pigtail of the second optical fiber array is connected to the optical fiber assembly; Or / and, the optical fiber assembly is connected to an MPO interface provided on the base; Or / and, the second light emission engine mounting housing is a metal housing.

10. The optical module according to claim 3 or 8, characterized in that: It also includes a cover plate, which is fixedly connected to the base, and a PCBA board is arranged between the base and the cover plate.

Images