Optical interface network card and optical transmission device

Abstract

The application discloses an optical interface network card suitable for an optical cable unit, which comprises a carrier plate, a network chip arranged on the carrier plate, an optical adapter arranged on the carrier plate and used for connecting the optical cable unit, a photonic integrated circuit arranged on the carrier plate and comprising a signal transmission part, and an optical coupling assembly arranged on the carrier plate and connected between the optical adapter and the signal transmission part of the photonic integrated circuit, so that the utilization of the limited internal space in a data processing device is improved.

Description

Technical Field

[0001] This invention relates to the field of optical adapter technology, and more particularly to optical interface network cards and optical transmission devices. Background Technology

[0002] Generally, data processing devices such as switches and servers are equipped with fiber optic network interface cards (NICs) for network connectivity. Typically, the backplane of a fiber optic NIC provides one or more ports for connecting cables, such as straight-through cables (DACs) with Small Form-Pluggable (SFP) connectors or Active Optical Cables (AOCs), serving as the medium for optical signal transmission. The connectors for these cables are equipped with optical transceivers, making them larger than traditional Ethernet NICs. In other words, traditional fiber optic NICs must be designed with larger slots to accommodate these cable connectors. However, the limited internal space of data processing devices and the larger size of traditional fiber optic NICs hinder the placement of other components and impede the optimization of their operating efficiency. Summary of the Invention

[0003] The purpose of this application is to provide a compact optical interface network card.

[0004] Another objective of this application is to provide an optical interface network card that is compatible with external light sources.

[0005] Another object of this application is to provide an optical transmission device that enables direct optical connection between an optical interface network and an optical cable unit without the need for optical transceiver interconnection.

[0006] To achieve the above objectives, this application provides an optical interface network card suitable for optical cable units, including a carrier board; a network chip disposed on the carrier board; an optical adapter disposed on the carrier board for connecting the optical cable unit; a photonic integrated circuit disposed on the carrier board, which includes a signal transmission section; and an optical coupling component disposed on the carrier board and connected between the signal transmission section of the optical adapter and the photonic integrated circuit.

[0007] Optionally, the optical coupling assembly includes an optical fiber array unit, which includes a connector, a ferrule, and multiple optical fibers connected between the connector and the ferrule. The connector is connected to the optical adapter, and the ferrule is disposed corresponding to the signal transmission section of the photonic integrated circuit, such that the multiple optical fibers are optically connected to the signal transmission section.

[0008] Optionally, the optical coupling assembly further includes an optical connector, a connector disposed on the photonic integrated circuit, and a waveguide substrate. The optical connector includes the ferrule element and is detachably connected to the connector, and the waveguide substrate is disposed on the connector and optically aligned between the plurality of optical fibers and the signal transmission section of the photonic integrated circuit.

[0009] Optionally, the waveguide substrate extends integrally from the photonic integrated circuit.

[0010] Optionally, the optical interface network card further includes a light source, which includes a light-emitting module and an optical transmission module. The light-emitting module is disposed on the carrier board and spaced apart from the photonic integrated circuit, and the optical transmission module is connected between the light-emitting module and the ferrule element for transmitting light from the light-emitting module to the photonic integrated circuit.

[0011] Optionally, the optical coupling assembly includes a connector connected between the optical adapter and the photonic integrated circuit, and a waveguide substrate disposed within the connector and optically aligned with the signal transmission section of the optical cable unit and the photonic integrated circuit.

[0012] Optionally, the optical interface network card further includes a light source, which includes a light-emitting module and an optical transmission module. The light-emitting module is disposed on the carrier board and spaced apart from the photonic integrated circuit, and the optical transmission module is connected between the light-emitting module and the optical cable unit for transmitting light from the light-emitting module to the photonic integrated circuit.

[0013] Optionally, the optical interface network card further includes a sub-optical adapter, which is disposed on the carrier board and used to connect the optical transmission module. The optical cable unit includes an optical cable, a plug device disposed at one end of the optical cable and detachably inserted into the optical adapter, and an extension cable assembly. The extension cable assembly includes: one end extending away from the sub-optical adapter and along the optical cable and bent toward the optical cable to connect to the plug device, and the other end detachably inserted into the sub-optical adapter.

[0014] Optionally, the waveguide substrate extends integrally from the photonic integrated circuit.

[0015] Optionally, the carrier plate includes a positioning groove that is close to the optical adapter and extends through the opposite surface of the carrier plate, such that the optical adapter is located within the positioning groove.

[0016] This application also provides an optical transmission device, including an optical interface network card and an optical cable unit. The optical interface network card includes: a carrier board, a network chip disposed on the carrier board, an optical adapter disposed on the carrier board, a photonic integrated circuit including a signal transmission section disposed on the carrier board, and an optical coupling component disposed on the carrier board and connected between the optical adapter and the signal transmission section. The optical cable unit is detachably inserted into the optical adapter and is optically connected to the photonic integrated circuit through the optical coupling component.

[0017] Optionally, the optical coupling assembly includes an optical fiber array unit, which includes a connector, a ferrule, and multiple optical fibers connected between the connector and the ferrule. The connector is connected to the optical adapter, and the ferrule is disposed corresponding to the signal transmission section of the photonic integrated circuit, such that the multiple optical fibers are optically connected to the signal transmission section.

[0018] Optionally, the optical coupling assembly further includes an optical connector, a connector disposed on the photonic integrated circuit, and a waveguide substrate. The optical connector includes the ferrule element and is detachably connected to the connector, and the waveguide substrate is disposed on the connector and optically aligned between the plurality of optical fibers and the signal transmission section of the photonic integrated circuit.

[0019] Optionally, the optical transmission device further includes a light source, which includes a light-emitting module and an optical transmission module. The light-emitting module is disposed on the carrier plate and spaced apart from the photonic integrated circuit, and the optical transmission module is connected between the light-emitting module and the ferrule element for transmitting light from the light-emitting module to the photonic integrated circuit.

[0020] Optionally, the waveguide substrate extends integrally from the photonic integrated circuit.

[0021] Optionally, the optical coupling assembly includes a connector connected between the optical adapter and the photonic integrated circuit, and a waveguide substrate disposed within the connector and optically aligned with the signal transmission section of the optical cable unit and the photonic integrated circuit.

[0022] Optionally, the optical cable unit includes an optical cable and a plug device disposed at one end of the optical cable and detachably inserted into the optical adapter.

[0023] Optionally, the optical transmission device further includes a sub-optical adapter disposed on the carrier plate, and a light source, the light source including a light-emitting module and an optical transmission module. The optical cable unit further includes an extension cable assembly, one end of which is located away from the sub-optical adapter and extends along the optical cable and bends toward the optical cable to connect to the plug device, and the other end is detachably inserted into the sub-optical adapter. The light-emitting module is located on the carrier plate and spaced apart from the photonic integrated circuit, and the optical transmission module is connected between the light-emitting module and the sub-optical adapter for transmitting light sequentially from the light-emitting module to the photonic integrated circuit through the extension cable assembly and the optical cable.

[0024] Optionally, the carrier plate includes a positioning groove that is close to the optical adapter and extends through the opposite surface of the carrier plate, such that the optical adapter is located within the positioning groove.

[0025] In this application, the optical interface network card and the optical transmission device use photonic integrated circuits as the optical signal transmission medium, eliminating the need for a traditional optical transceiver (not shown) connected to the optical cable, thus making the optical interface network card more compact and efficient. Furthermore, the independent light source of the photonic integrated circuit can provide higher power, optimizing the size and efficiency of the entire optical interface network card and optical transmission device, thereby improving the utilization of limited internal space in data processing equipment. Attached Figure Description

[0026] To describe the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments are briefly introduced below. The accompanying drawings in the following description only show some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without creative effort.

[0027] Figure 1 This is a three-dimensional schematic diagram of an optical interface network card according to an embodiment of this application.

[0028] Figure 2 This is a three-dimensional schematic diagram of an optical interface network card according to an embodiment of this application.

[0029] Figure 3 This is a three-dimensional schematic diagram of an optical interface network card according to an embodiment of this application.

[0030] Figure 4 This is a three-dimensional schematic diagram of an optical interface network card according to an embodiment of this application.

[0031] Figure 5 This is a three-dimensional schematic diagram of an optical interface network card according to an embodiment of this application.

[0032] Figure 6 This is a three-dimensional schematic diagram of an optical interface network card according to an embodiment of this application.

[0033] Figure 7 yes Figure 6 Another 3D view of the optical interface network card shown. Detailed Implementation

[0034] The following embodiments will be used to illustrate specific embodiments of this application with reference to the accompanying drawings. The directional terms described in this application, such as up, down, front, back, left, right, inside, outside, and side, are merely directional terms used with reference to the accompanying drawings. Therefore, the directional terms used are intended to describe and understand this application, but this application is not limited thereto.

[0035] It should be understood that although the terms first, second, etc., may be used herein to describe various components, these components should not be limited by these terms. Unless otherwise stated, these terms are used only to distinguish one component from another. Thus, for example, a first component, first part, or first portion discussed below may be referred to as a second component, second part, or second portion without departing from the teachings of this application. Furthermore, reference numerals and / or letters may be repeated in various examples within this application. Such repetition is for simplicity and clarity and does not in itself determine the relationship between the various embodiments and / or configurations discussed.

[0036] This application provides an optical interface network card and an optical transmission device, which can provide optical transmission functionality for servers, switches, or other data processing devices equipped with serial bus interfaces, such as Peripheral Component Interconnect (PCIe) buses, so as to be used in conjunction with the optical interface network card. Figure 1 The diagram shown is a perspective view of an optical interface network card 1A according to an embodiment of this application. The optical interface network card 1A includes a carrier board 11, a plurality of optical adapters 10 disposed on the carrier board 11 and spaced apart from each other, a plurality of optical coupling components 30 disposed on the carrier board 11 and corresponding in number to the optical adapters 10, a plurality of photonic integrated circuits 51a disposed on the carrier board 11, and network chips 53 disposed spaced apart from the photonic integrated circuits 51a on the carrier board 11. In some embodiments, a strip-shaped bracket 13 is mounted on the carrier board 11 to form a plurality of connection ports for positioning the optical adapters 10. In other embodiments, the optical adapters 10 can be directly disposed on the carrier board 11. Each optical coupling component 30 is composed of a plurality of elements connected between the optical adapter 10 and the signal transmission section 511 of the photonic integrated circuit 51a. Specifically, the signal transmission section 511 is configured to realize optical signal transmission between the optical coupling component 30 and the photonic integrated circuit 51a.

[0037] like Figure 1As shown, each optical coupling component 30 includes a connector 303, a ferrule 305, and a plurality of optical fibers 301, which together constitute an optical fiber array unit 300. It should be noted that, for clarity, a portion of the optical fiber 301 is not shown in the figure. Specifically, the connector 303 is disposed at one end of each optical fiber 301 and can be inserted into an optical adapter 10. The ferrule 305 is disposed at the other end of the optical fiber 301 and corresponds to the signal transmission unit 511. In this embodiment, the ferrule 305 is configured to be permanently and directly connected to the signal transmission unit 511 of the photonic integrated circuit 51a.

[0038] Continue to refer to Figure 1 Multiple optical fiber units 60 are detachably inserted into corresponding optical adapters 10. The optical fiber units 60 and the optical interface network card 1A together constitute the optical transmission device 100A. Specifically, each optical fiber unit 60 includes an optical fiber 61 and a plug device 63. In this embodiment, the plug device 63 has a multi-core push-fit (MPO) structure. Accordingly, optical signals can be transmitted between the optical fiber unit 60 and the photonic integrated circuit 51a via the optical coupling component 30.

[0039] In this embodiment, the photonic integrated circuit 51a and the network chip 53 can be connected to the carrier board 11 via wire bonding. The photonic integrated circuit 51a is configured for photoelectric signal conversion and electro-optic signal conversion. In some embodiments, the photonic integrated circuit 51a is preferably a silicon photonic integrated circuit and can be made of silicon-based materials. Specifically, the photonic integrated circuit 51a may include at least one optical detection module, a light source module, and multiple active and passive components, such as, but not limited to, filters or multiplexing structures, optical power distribution structures, fiber optic output and input structures, and optical modulation structures. Since the features of this application do not involve the detailed structures of active and passive optical components known to those skilled in the art, these components will not be described in detail here. Figure 1 In the embodiment shown, each photonic integrated circuit 51a is equipped with a built-in light source that emits light toward the fiber array unit 300.

[0040] By using the cascaded configuration of the optical coupling component 30 and the photonic integrated circuit 51a disposed on the carrier board 11, the size of the optical interface network card 1A can be reduced because it does not require space to accommodate a conventional optical transceiver (not shown) connected to the optical cable 61, thus making the optical interface network card 1A more compact and efficient.

[0041] Reference Figure 2The figure shows an optical interface network card 1B according to another embodiment of this application. The main difference between optical interface network card 1B and optical interface network card 1A is that the photonic integrated circuit 51b of optical interface network card 1B does not contain a built-in light source, but relies on an external light source. It should be noted that the structure of optical interface network card 1B, which is similar in structure to optical interface network card 1A, will not be described in detail here. Figure 2 As shown, multiple light sources 40 are provided as external light sources for the photonic integrated circuit 51b. Specifically, each light source 40 includes a light-emitting module 41 and a light-transmitting module 43. The light-emitting module 41 is disposed on the carrier plate 11 and spaced apart from the photonic integrated circuit 51b. The light-transmitting module 43 is connected between the light-emitting module 41 and the ferrule element 305 and is used to transmit light from the light-emitting module 41 to the photonic integrated circuit 51b.

[0042] In some embodiments, the light-emitting module 41 may include a module housing (not labeled) and a light emitter (not labeled) disposed within the module housing. Specifically, the module housing is disposed on the carrier plate 11, and the light emitter is detachably inserted into the module housing. Preferably, the light emitter is a laser diode. Figure 2 As shown, the optical transmission module 43 includes a first signal transmission component 431 and a second signal transmission component 433, which are respectively configured together with the optical fiber 301 of the optical fiber array unit 300. Both the first signal transmission component 431 and the second signal transmission component 433 include optical fibers for transmitting optical signals between the light-emitting module 41 and the photonic integrated circuit 51b.

[0043] Continue to refer to Figure 2 Multiple optical cable units 60 can be detachably inserted into the corresponding optical adapters 10. Figure 2 The optical cable unit 60 shown is Figure 1 The structure of the optical cable unit 60 shown is basically the same, and will not be described again here. Figure 2 As shown, the optical cable unit 60 and the optical interface network card 1B together constitute the optical transmission device 100B.

[0044] By using the light source 40 as an external light source for the photonic integrated circuit 51b, the size of the photonic integrated circuit 51b can be reduced, and a higher-power independent light source 40 can be designed, thereby optimizing the size and efficiency of the entire optical interface network card 1B.

[0045] Reference Figure 3 This is a perspective view of an optical interface network card 2A according to another embodiment of this application. The main difference between optical interface network card 2A and optical interface network card 1A lies in the structure of the optical coupling component 30. Figure 3As shown, each optical coupling assembly 30 includes multiple optical fibers 301, a connector 303, an optical connector 31, a connector base 32, and a waveguide substrate 33. Specifically, the optical connector 31 includes a ferrule element 305' and a fastener 311 movably assembled to the ferrule element 305', and the connector base 32 includes a coupling member 321. The ferrule element 305' is located at the end of the optical fiber 301, away from the connector 303, and is detachably connected to the connector base 32. The fastener 311 is configured to detachably engage with the coupling member 321 to further ensure the connection between the ferrule element 305' and the connector base 32. The waveguide substrate 33 is disposed in the connector base 32 and is optically aligned between the optical fiber 301 and the signal transmission section 511 of the photonic integrated circuit 51a.

[0046] In some embodiments, the waveguide substrate 33 may be made of silicon dioxide or silicon, depending on specific requirements. The waveguide substrate 33 may include a planar optical waveguide (PLC), which can be configured in various ways, including but not limited to linear optical paths, splitter optical paths, arrayed waveguide grating wavelength multiplexers, and cross-connected optical paths. In the waveguide substrate 33 of this application, different types of waveguide optical paths or devices can be used as planar optical waveguides. In the optical interface network card 2A, each photonic integrated circuit 51a is equipped with a built-in light source that emits light to the optical connector 31.

[0047] Continue to refer to Figure 3 A bridging element 34 is provided on the connector 32. Specifically, a portion of the bridging element 34 is located on the waveguide substrate 33, and another portion of the bridging element 34 is located on the photonic integrated circuit 51a. The use of the bridging element 34 can enhance the structural strength of the photonic integrated circuit 51a and provide structural force to connect the photonic integrated circuit 51a and the waveguide substrate 33. In some embodiments, the waveguide substrate 33 can be integrally extended from the photonic integrated circuit 51a, which eliminates the need for an additional waveguide conversion substrate for optical coupling, thereby simplifying the structure.

[0048] exist Figure 3 In the illustrated embodiment, the photonic integrated circuit 51a and the network chip 53 can be mounted onto the carrier board 11 using a flip-chip method. It should be noted that, based on the detachable connection between the optical connector 31 and the photonic integrated circuit 51a, the assembly of the photonic integrated circuit 51a and the waveguide substrate 33 with the carrier board 11 can be performed using reflow soldering or other back-end processes at high temperatures. In this case, the optical fiber 301 and the optical connector 31 are separated from the photonic integrated circuit 51a. Therefore, the optical fiber 301 will not be damaged by the high temperatures encountered during the aforementioned process.

[0049] Reference Figure 3 Multiple optical cable units 60 can be detachably inserted into the corresponding optical adapters 10. Figure 3 The optical cable unit 60 shown is Figure 1The structure of the optical cable unit 60 shown is basically the same, and will not be described again here. Figure 3 As shown, the optical cable unit 60 and the optical interface network card 2A together constitute the optical transmission device 200A.

[0050] Reference Figure 4 This is a perspective view of an optical interface network card 2B according to another embodiment of the fundamental application. The main difference between optical interface network card 2B and optical interface network card 2A is that the photonic integrated circuit 51b of optical interface network card 2B does not contain a built-in light source, but relies on an external light source. Figure 4 As shown, multiple light sources 40 are provided, each serving as an external light source for the photonic integrated circuit 51b. It should be noted that... Figure 4 The light source 40 shown is Figure 2 The structure of the light source 40 shown is basically the same.

[0051] like Figure 4 As shown, each light source 40 includes a light-emitting module 41 and a light transmission module 43. The light-emitting module 41 is disposed on the carrier plate 11 and spaced apart from the photonic integrated circuit 51b. The light transmission module 43 is connected between the light-emitting module 41 and the optical connector 31 for transmitting light from the light-emitting module 41 to the photonic integrated circuit 51b. Specifically, the light transmission module 43 includes a first signal transmission component 431 and a second signal transmission component 433 configured together with the optical fiber 301. Both the first signal transmission component 431 and the second signal transmission component 433 include optical fibers for transmitting optical signals between the light-emitting module 41 and the photonic integrated circuit 51b.

[0052] like Figure 4 As shown, multiple optical cable units 60 are detachably inserted into corresponding optical adapters 10. Figure 4 The optical cable unit 60 shown is Figure 1 The structure of the optical cable unit 60 shown is basically the same, and will not be described again here. Figure 4 As shown, the optical cable unit 60 and the optical interface network card 2B together constitute the optical transmission device 200B.

[0053] Reference Figure 5 This is a perspective view of an optical interface network card 3A according to another embodiment of this application. In this embodiment, the optical coupling component 30 of the optical interface network card 3A omits the fiber array unit 300 and the optical connector 31, but retains the connector 32. Similarly, the waveguide substrate 33 is disposed in the connector 32 and is optically aligned with the signal transmission section 511 of the photonic integrated circuit 51a. In this embodiment, each photonic integrated circuit 51a of the optical interface network card 3A is equipped with a built-in light source. Since the fiber array unit 300 and the optical connector 31 are omitted, the size of the optical interface network card 3A can be significantly reduced, making it more compact. It should be noted that... Figure 5The structure of the optical interface network card 3A shown is basically the same as that of the optical interface network cards 1A and 2A, and will not be described again here.

[0054] In some embodiments, the carrier board 11 of the optical interface network card 3A defines a positioning groove 111, which is close to the optical adapter 10 and extends through the opposite surface of the carrier board 11. Accordingly, the optical adapter 10 is located in the positioning groove 111, so that the plug device 63 can be inserted into the optical adapter 10, thereby enabling optical signals to be transmitted directly from the waveguide substrate 33 to the plug device 63.

[0055] like Figure 5 As shown, the plug device 63 of the optical cable unit 60 is a high-speed connector, which can improve signal transmission performance. In this embodiment, multiple plug devices 63 (high-speed connectors) of the optical cable unit 60 are respectively inserted into the optical adapter 10 to directly connect to the waveguide substrate 33. Therefore, since the fiber array unit 300 and the optical connector 31 are removed, the signal transmission distance between the waveguide substrate 33 and the optical cable unit 60 can be shortened. In this embodiment, the optical interface network card 3A and the optical cable unit 60 together constitute the optical transmission device 300A.

[0056] See Figure 6 and Figure 7 These are perspective schematic diagrams of optical interface network card 3B according to another embodiment of this application. The main difference between optical interface network card 3B and optical interface network card 3A is that the photonic integrated circuit 51b of optical interface network card 3B does not contain a built-in light source, but relies on an external light source. Figure 6 As shown, the optical interface network card 3B includes two light sources 40, each light source 40 including a light-emitting module 41 and an optical transmission module 43. The light-emitting module 41 is disposed on the carrier board 11, spaced apart from the photonic integrated circuit 51b, and the optical transmission module 43 is connected between the light-emitting module 41 and the optical cable unit 60, used to transmit light from the light-emitting module to the photonic integrated circuit 51b. In this embodiment, the optical interface network card 3B and the optical cable unit 60 together constitute the optical transmission device 300B.

[0057] like Figure 6As shown, bracket 13 is mounted on carrier plate 11. Multiple optical adapters 10 and sub-optical adapters 12 are alternately arranged on bracket 13, with each optical adapter 10 grouped with a sub-optical adapter 12. Each optical cable unit 60 includes an optical cable 61, a plug device 63 located at the end of the optical cable 61 and detachably inserted into the optical adapter 10, and an extension cable assembly 65. Specifically, the extension cable assembly 65 includes one end extending away from the sub-optical adapter 12 along the optical cable 61 and bent toward the optical cable 61 to connect to the plug device 63, and the other end detachably inserted into the sub-optical adapter 12 to connect to the optical transmission module 43. Specifically, the extension cable assembly 65 includes an optical plug 66, a first signal line 661, and a second signal line 662. The optical plug 66 is inserted into one end of the sub-optical adapter 12 outside the carrier plate 11, and the first signal transmission component 431 and the second signal transmission component 433 are connected to the other end of the sub-optical adapter 12 opposite to the optical plug 66.

[0058] Continue to refer to Figure 6 One end of the first signal line 661 and the second signal line 662 are connected to the optical connector 66, and the other end is integrated with the optical cable 61. In some embodiments, the light-emitting module 41 emits light, which enters the first signal line 661 outside the carrier board 11 from the optical transmission module 43 along a first direction (indicated by arrow A1). Then, the light is redirected to the optical cable 61 (indicated by arrow A2) and propagates along a second direction opposite to the first direction (indicated by arrow A3) to the first direction, reaching the connector 63. Finally, the light enters the photonic integrated circuit 51b through the waveguide substrate 33. In this way, the optical connection point between the optical transmission module 43 and the optical cable 61 is located outside the carrier board 11, thereby further reducing the size of the optical interface network card 3B.

[0059] This application also provides an optical transmission device, comprising: a carrier board; a network chip disposed on the carrier board; an optical adapter disposed on the carrier board; a photonic integrated circuit disposed on the carrier board, the photonic integrated circuit including a signal transmission section; an optical coupling component disposed on the carrier board and connected between the optical adapter and the signal transmission section; and an optical cable unit detachably inserted into the optical adapter and optically connected to the photonic integrated circuit through the optical coupling component.

[0060] Therefore, the optical interface network card and the optical transmission device use photonic integrated circuits as the optical signal transmission medium, eliminating the need for a traditional optical transceiver (not shown) connected to the optical cable, thus making the optical interface network card more compact and efficient. Furthermore, the independent light source of the photonic integrated circuit can provide higher power, optimizing the size and efficiency of the entire optical interface network card and optical transmission device, thereby improving the utilization of limited internal space in data processing equipment.

[0061] Although this application has been disclosed in conjunction with a description of certain embodiments, including those currently considered preferred embodiments, the detailed description is intended to be illustrative and should not be construed as limiting the scope of this application. Those skilled in the art will understand that other embodiments besides those described in detail herein are also included in this application. Modifications and variations can be made to the described embodiments without departing from the scope of this application.

Claims

1. An optical interface network card, suitable for optical cable units, characterized in that, include: Carrier plate; The network chip is mounted on the carrier board; An optical adapter, mounted on the carrier board, is used to connect the optical cable unit; A photonic integrated circuit is disposed on the carrier board and includes a signal transmission section; and An optical coupling component is disposed on the carrier board and connected between the optical adapter and the signal transmission section of the photonic integrated circuit.

2. The optical interface network card as described in claim 1, characterized in that, The optical coupling assembly includes an optical fiber array unit, which includes a connector, a ferrule, and multiple optical fibers connected between the connector and the ferrule. The connector is connected to the optical adapter, and the ferrule is disposed corresponding to the signal transmission section of the photonic integrated circuit, such that the multiple optical fibers are optically connected to the signal transmission section.

3. The optical interface network card as described in claim 2, characterized in that, The optical coupling assembly further includes an optical connector, a connector disposed on the photonic integrated circuit, and a waveguide substrate, wherein the optical connector includes the ferrule element and is detachably connected to the connector, and the waveguide substrate is disposed on the connector and optically aligned between the plurality of optical fibers and the signal transmission section of the photonic integrated circuit.

4. The optical interface network card as described in claim 3, characterized in that, The waveguide substrate extends integrally from the photonic integrated circuit.

5. The optical interface network card as described in claim 2, characterized in that, It also includes a light source, which includes a light-emitting module and a light transmission module. The light-emitting module is disposed on the carrier plate and spaced apart from the photonic integrated circuit. The light transmission module is connected between the light-emitting module and the ferrule element for transmitting light from the light-emitting module to the photonic integrated circuit.

6. The optical interface network card as described in claim 1, characterized in that, The optical coupling assembly includes a connector that connects the optical adapter and the photonic integrated circuit, and a waveguide substrate disposed within the connector and optically aligned with the signal transmission section of the optical cable unit and the photonic integrated circuit.

7. The optical interface network card as described in claim 6, characterized in that, It also includes a light source, which includes a light-emitting module and a light transmission module. The light-emitting module is disposed on the carrier plate and spaced apart from the photonic integrated circuit. The light transmission module is connected between the light-emitting module and the optical cable unit for transmitting light from the light-emitting module to the photonic integrated circuit.

8. The optical interface network card as described in claim 7, characterized in that, It also includes a sub-optical adapter, which is disposed on the carrier board and used to connect the optical transmission module. The optical cable unit includes an optical cable, a plug device disposed at one end of the optical cable and detachably inserted into the optical adapter, and an extension cable assembly. One end of the extension cable assembly is away from the sub-optical adapter and extends along the optical cable and bends toward the optical cable to connect to the plug device, and the other end is detachably inserted into the sub-optical adapter.

9. The optical interface network card as described in claim 6, characterized in that, The waveguide substrate extends integrally from the photonic integrated circuit.

10. The optical interface network card as described in claim 6, characterized in that, The carrier plate includes a positioning groove that is close to the optical adapter and extends through the opposite surface of the carrier plate, such that the optical adapter is located within the positioning groove.

11. An optical transmission device, characterized in that, include: Optical interface network cards, including: Carrier plate; The network chip is mounted on the carrier board; An optical adapter is mounted on the carrier board; A photonic integrated circuit, disposed on the carrier board, includes a signal transmission section; and An optical coupling assembly is disposed on the carrier board and connected between the optical adapter and the signal transmission unit; The optical cable unit is detachably inserted into the optical adapter and optically connected to the photonic integrated circuit via the optical coupling component.

12. The optical transmission device as claimed in claim 11, characterized in that, The optical coupling assembly includes an optical fiber array unit, which includes a connector, a ferrule, and multiple optical fibers connected between the connector and the ferrule. The connector is connected to the optical adapter, and the ferrule is disposed corresponding to the signal transmission section of the photonic integrated circuit, such that the multiple optical fibers are optically connected to the signal transmission section.

13. The optical transmission device as claimed in claim 12, characterized in that, The optical coupling assembly further includes an optical connector, a connector disposed on the photonic integrated circuit, and a waveguide substrate, wherein the optical connector includes the ferrule element and is detachably connected to the connector, and the waveguide substrate is disposed on the connector and optically aligned between the plurality of optical fibers and the signal transmission section of the photonic integrated circuit.

14. The optical transmission device as claimed in claim 12, characterized in that, It also includes a light source, which includes a light-emitting module and a light transmission module. The light-emitting module is disposed on the carrier plate and spaced apart from the photonic integrated circuit. The light transmission module is connected between the light-emitting module and the ferrule element for transmitting light from the light-emitting module to the photonic integrated circuit.

15. The optical transmission device as claimed in claim 13, characterized in that, The waveguide substrate extends integrally from the photonic integrated circuit.

16. The optical transmission device as claimed in claim 11, characterized in that, The optical coupling assembly includes a connector that connects the optical adapter and the photonic integrated circuit, and a waveguide substrate disposed within the connector and optically aligned with the signal transmission section of the optical cable unit and the photonic integrated circuit.

17. The optical transmission device as claimed in claim 11, characterized in that, The optical cable unit includes an optical cable and a plug device disposed at one end of the optical cable and detachably inserted into the optical adapter.

18. The optical transmission device as claimed in claim 17, characterized in that, It also includes a sub-optical adapter disposed on the carrier plate, and a light source, the light source including a light-emitting module and a light transmission module, wherein the optical cable unit further includes an extension cable assembly, one end of the extension cable assembly being away from the sub-optical adapter and extending along the optical cable and bending toward the optical cable to connect to the plug device, and the other end being detachably inserted into the sub-optical adapter, wherein the light-emitting module is located on the carrier plate and spaced apart from the photonic integrated circuit, and the light transmission module is connected between the light-emitting module and the sub-optical adapter for transmitting light sequentially from the light-emitting module to the photonic integrated circuit through the extension cable assembly and the optical cable.

19. The optical transmission device as claimed in claim 16, characterized in that, The carrier plate includes a positioning groove that is close to the optical adapter and extends through the opposite surface of the carrier plate, such that the optical adapter is located within the positioning groove.

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