Signal transmission method and device, storage medium, and electronic device

Abstract

Embodiments of the present application provide a signal transmission method and device, a non-volatile readable storage medium, and an electronic device. The method comprises: when a first light emitting component obtains a first electrical signal, converting the first electrical signal into a first optical signal, inputting the first optical signal into a first optical switching unit, and outputting the first optical signal to an output port of the first optical switching unit by means of a first optical path, wherein the first electrical signal is an electrical signal of a first type, and the output port is connected to an optical fiber; and when a second light emitting component obtains a second electrical signal, converting the second electrical signal into a second optical signal by means of the second light emitting component, inputting second optical signal into the first optical switching unit, and outputting the second optical signal to the output port of the first optical switching unit by means of a second optical path in the first optical switching unit, wherein the second electrical signal is an electrical signal of a second type.

Description

Signal transmission method and device, storage medium and electronic device

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on November 29, 2023, with application number 202311615383.9 and application name “Signal Transmission Method and Device, Storage Medium and Electronic Device”, all contents of which are incorporated by reference into this application. Technical Field

[0003] The embodiments of the present application relate to the field of computers, and more specifically, to a signal transmission method and device, a non-volatile readable storage medium, and an electronic device. Background Art

[0004] Currently, to meet the demand for high-speed interconnection, low-loss optical interconnection methods are needed to construct transmission paths for data signals. Traditional optoelectronic conversion modules convert only high-speed data signals into optical signals for transmission via optical fiber. However, some links (such as PCIe (Peripheral Component Interconnect Express, a high-speed serial computer expansion bus standard) links) require the transmission of low-speed auxiliary signals in addition to high-speed data signals. These low-speed auxiliary signals are essential for supporting link training, link establishment, and link state switching. To transmit these low-speed auxiliary signals over optical fiber links, it is necessary to enable the low-speed auxiliary signals to pass through the optical module.

[0005] Conventional technologies typically transmit high-speed data signals and low-speed auxiliary signals by adding additional modules (such as chips or FPGAs (Field Programmable Gate Arrays)) or by using top-modulation technology to modulate the signals. However, adding additional modules not only increases device cost but also reduces the device's effective data bandwidth, thereby impacting signal transmission efficiency. While using top-modulation technology to modulate auxiliary signals onto separate data channels can reduce costs, it also lowers the signal-to-noise ratio and reduces the sensitivity of the optical module's receiver, further impacting signal transmission efficiency.

[0006] Therefore, the signal transmission method in the prior art has the problem of low signal transmission efficiency.

[0007] Summary of the Invention

[0008] The embodiments of the present application provide a signal transmission method and device, a non-volatile readable storage medium and an electronic device, so as to at least solve the problem of low signal transmission efficiency in the signal transmission method in the prior art.

[0009] According to one embodiment of the present application, a signal transmission method is provided, comprising: when a first optical transmission component obtains a first electrical signal sent by a first device, converting the first electrical signal into a first optical signal through the first optical transmission component, inputting the first optical signal into a first optical switching switch unit, and outputting the first optical signal to an output port of the first optical switching switch unit through a first optical path in the first optical switching switch unit, wherein the first optical transmission component is configured to convert a first type of electrical signal into an optical signal, the first electrical signal is a first type of electrical signal, and the output port is connected to an optical fiber; when a second optical transmission component obtains a second electrical signal sent by the first device, converting the second electrical signal into a second optical signal through the second optical transmission component, inputting the second optical signal into the first optical switching switch unit, and outputting the second optical signal to the output port of the first optical switching switch unit through a second optical path in the first optical switching switch unit, wherein the second optical transmission component is configured to convert the second type of electrical signal into an optical signal, and the second electrical signal is a second type of electrical signal.

[0010] According to another embodiment of the present application, a signal transmission device is provided, comprising: a first optical transmission component, configured to, when the first optical transmission component obtains a first electrical signal sent by a first device, convert the first electrical signal into a first optical signal, and input the first optical signal into a first optical switching switch unit, wherein the first optical transmission component is configured to convert a first type of electrical signal into an optical signal, and the first electrical signal is a first type of electrical signal; a second optical transmission component, configured to, when the second optical transmission component obtains a second electrical signal sent by the first device, convert the second electrical signal into a second optical signal, and input the second optical signal into the first optical switching switch unit. The optical switching switch unit comprises a first optical switching switch unit and a second optical switching switch unit, wherein the second optical transmitting component is configured to convert the second type of electrical signal into an optical signal, and the second electrical signal is an electrical signal of the second type; the first optical switching switch unit is connected to the first optical transmitting component and the second optical transmitting component respectively, and is configured to output the first optical signal to the output port of the first optical switching switch unit through the first optical path in the first optical switching switch unit when the first optical signal is input to the first optical switching switch unit, wherein the output port is configured to be connected to the optical fiber; and output the second optical signal to the output port through the second optical path in the first optical switching switch unit when the second optical signal is input to the first optical switching switch unit.

[0011] According to another embodiment of the present application, a computer non-volatile readable storage medium is provided, in which a computer program is stored, wherein the computer program is configured to execute the steps of any of the above method embodiments when running.

[0012] According to another embodiment of the present application, an electronic device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor is configured to run the computer program to execute the steps in any one of the above method embodiments.

[0013] Through the present application, a method of selectively switching and transmitting two types of signals through the same transmission link is adopted. According to the signal type of the acquired electrical signal to be transmitted, the optical switching unit is switched to the corresponding optical path, so that the optical signal converted from the electrical signal is transmitted to the output port through the switched optical path. There is no need to establish separate optical fiber channels for the two signals, which can reduce the transmission cost. In addition, the selective switching and transmission of the two types of signals through the same transmission link can avoid the mutual influence of the two types of signals, improve the sensitivity of the receiving end to the signal, and improve the transmission efficiency of the signal. Therefore, it can solve the problem of low signal transmission efficiency in the signal transmission method in the existing technology and achieve the technical effect of signal transmission efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] FIG1 is a schematic diagram of a hardware environment of a signal transmission method according to an embodiment of the present application.

[0015] FIG2 is a schematic flow chart of a signal transmission method according to an embodiment of the present application.

[0016] FIG3 is a schematic diagram of a signal transmission device according to an embodiment of the present application.

[0017] FIG4 is a schematic diagram of an optical switching switch unit according to an embodiment of the present application.

[0018] FIG5 is a schematic diagram of another signal transmission method according to an embodiment of the present application.

[0019] FIG6 is a schematic diagram of another signal transmission method according to an embodiment of the present application.

[0020] FIG7 is a schematic diagram of another signal transmission method according to an embodiment of the present application.

[0021] FIG8 is a flowchart of another signal transmission method according to an embodiment of the present application.

[0022] FIG9 is a schematic diagram of another signal transmission method according to an embodiment of the present application.

[0023] FIG10 is a schematic diagram of another optical switching switch unit according to an embodiment of the present application.

[0024] FIG11 is a schematic diagram of another signal transmission method according to an embodiment of the present application.

[0025] FIG12 is a schematic diagram of a signal transmission system according to an embodiment of the present application.

[0026] FIG13 is a flow chart of another signal transmission method according to an embodiment of the present application.

[0027] FIG14 is a flow chart of another signal transmission method according to an embodiment of the present application. DETAILED DESCRIPTION

[0028] The embodiments of the present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0029] It should be noted that the terms "target", "second", etc. in the description and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0030] The method embodiments provided in the embodiments of the present application can be executed in a server device or a similar computing device. Taking operation on a server device as an example, FIG1 is a hardware structure block diagram of a server device of a signal transmission method in an embodiment of the present application. As shown in FIG1 , the server device may include one or more (only one is shown in FIG1 ) processors 102 (the processor 102 may include but is not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA) and a memory 104 for storing data, wherein the above-mentioned server device may also include a transmission device 106 and an input and output device 108 for communication functions. It will be understood by those skilled in the art that the structure shown in FIG1 is only for illustration, and it does not limit the structure of the above-mentioned server device. For example, the server device may also include more or fewer components than those shown in FIG1 , or have a configuration different from that shown in FIG1 .

[0031] The memory 104 can be configured to store computer programs, for example, software programs and modules of application software, such as the computer program corresponding to the signal transmission method in the embodiment of the present application. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, that is, implementing the above-mentioned method. The memory 104 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include a memory remotely located relative to the processor 102, and these remote memories may be connected to a server device via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0032] The transmission device 106 is configured to receive or transmit data via a network. A specific example of the aforementioned network may include a wireless network provided by a communication provider of the server device. In one embodiment, the transmission device 106 includes a network interface controller (NIC), which can be connected to other network devices via a base station to enable communication with the Internet. In one embodiment, the transmission device 106 may be a radio frequency (RF) module for wireless communication with the Internet.

[0033] A signal transmission method is provided in this embodiment. FIG2 is a flow chart of the signal transmission method according to the embodiment of the present application. As shown in FIG2 , the flow chart includes the following steps.

[0034] Step S202: When the first optical transmission component obtains the first electrical signal sent by the first device, the first electrical signal is converted into a first optical signal through the first optical transmission component, the first optical signal is input into the first optical switching switch unit, and the first optical signal is output to the output port of the first optical switching switch unit through the first optical path in the first optical switching switch unit, wherein the first optical transmission component is configured to convert the first type of electrical signal into an optical signal, the first electrical signal is a first type of electrical signal, and the output port is connected to the optical fiber.

[0035] Step S204, when the second optical transmission component obtains the second electrical signal sent by the first device, the second electrical signal is converted into a second optical signal through the second optical transmission component, the second optical signal is input into the first optical switching switch unit, and the second optical signal is output to the output port of the first optical switching switch unit through the second optical path in the first optical switching switch unit, wherein the second optical transmission component is configured to convert the second type of electrical signal into an optical signal, and the second electrical signal is an electrical signal of the second type.

[0036] The signal transmission method in this embodiment can be applied to the scenario of transmitting PCIe data signals. PCIe is a high-speed serial computer expansion bus standard, which is mainly used to expand the data throughput of the computer system bus and improve the communication speed of the device. Currently, PCIe data signals are mainly constructed through electrical interconnection to build a transmission path, including PCB board-level copper wires and copper cables. With the continuous updating of the PCIe protocol, the loss problem caused by electrical interconnection has become increasingly prominent, and the signal transmission distance that can be achieved by electrical interconnection has gradually decreased. For PCIe5.0 rate signals, traditional external copper cables can only achieve m-level length interconnection. Faced with the current high-speed interconnection requirements across cabinet levels in data centers or supercomputing centers, low-loss optical interconnection is currently the best solution.

[0037] Because the corresponding optical module standards were not developed for the PCIe protocol, some settings in the PCIe protocol are incompatible with existing optical module standards. This results in failure when directly using optical modules to build PCIe optical interconnects. Traditional optoelectronic conversion modules only convert high-speed data signals into optical signals for transmission over optical fiber. However, PCIe links, in addition to transmitting high-speed data signals, also need to transmit low-speed auxiliary signals. These low-speed auxiliary signals are necessary to support PCIe link training, link establishment, and link state switching. Traditional copper cables can directly transmit low-speed auxiliary signals, but to transmit such low-speed auxiliary signals over optical fiber links, they must be able to pass through optical modules. The built-in DSP chips of high-speed optoelectronic conversion devices generally only support high-speed signals at specific rates and are unable to transmit these low-speed auxiliary signals.

[0038] In the related art, PCIe link signal transmission is often carried out in the following ways: as an optional embodiment, low-speed auxiliary signals such as clocks are compiled into higher-speed LVDS (Low-Voltage Differential Signaling) through a conversion chip, and then transmitted using an independent optical module and optical fiber link; as an optional embodiment, a method of transmitting PCIe auxiliary signals through top modulation technology, when the sending end sends the auxiliary signal, controls the optical module laser driver in the data link through a controller to convert the auxiliary signal into a small-amplitude low-frequency sine or cosine modulated signal, and superimposes it on the corresponding pre-set high-speed data signal. After the opposite-end optical module parses the modulated signal, it can obtain the corresponding auxiliary signal information; as an optional embodiment, FPGA is used to compile the low-speed auxiliary signal to a higher rate, and then the redundant laser of the CXP (a hot-swappable high-density parallel optical module standard) optical module is used to perform electro-optical conversion on the auxiliary signal compiled by the FPGA and then transmit it through optical fiber.

[0039] However, using conversion chips or FPGAs to process auxiliary signals before transmitting them over independent optical links requires additional electro-optical signal conversion devices and optical fiber channels, which not only increases component cost but also reduces the device's effective data bandwidth. Using top modulation to modulate auxiliary signals onto separate data channels does eliminate the need for independent devices and optical fiber channels, but this approach can reduce the signal-to-noise ratio and the sensitivity of the optical module receiver. In particular, in the PCIe 6.0 protocol, which uses PAM4 (4-Level Pulse Amplitude Modulation) for high-speed data signals, top modulation significantly increases the bit error rate, making it unusable.

[0040] In order to solve at least some of the above problems, in this embodiment, a high-speed optical transmission component can be used in combination with a low-speed optical transmission component to realize the optical signal conversion of high-speed data signals and low-speed auxiliary signals in the PCIe protocol. The low-speed auxiliary signal transmission uses the optical fiber link for high-speed data signal transmission, which can effectively reduce the cost of the optical fiber link. The selective switching transmission of high-speed data signals and low-speed auxiliary signals is realized through the optical switching switch unit, which can avoid the degradation of signal quality due to the operation of high-speed data electrical signals, improve the sensitivity of the optical module receiver, and thus improve the efficiency of signal transmission.

[0041] It should be noted that the optical switching switch unit in this embodiment can be a silicon-based optical switching switch unit, the first type of electrical signal can be a high-speed data signal (i.e., a signal with a transmission frequency greater than a preset threshold), and the second type of electrical signal can be a low-speed auxiliary electrical signal (i.e., a signal with a transmission frequency less than a preset threshold). The preset threshold here can be 100MHz. Correspondingly, the first optical transmission component can be a high-speed optical transmission component, and the second transmission component can be a low-speed optical transmission component. The output port corresponds to the transmission inlet of the optical fiber. The high-speed optical transmission component can be a high-bandwidth high-speed optical transmission device, and the low-speed optical transmission component can be a low-bandwidth low-speed optical transmission component.

[0042] Optionally, a MCU (Microcontroller Unit) may be used to determine whether the currently acquired electrical signal is a signal of the first type or the second type.

[0043] As shown in Figure 3, Figure 3 is a schematic diagram of equipment for transmitting PCIe protocol optical signals. 301 is the optoelectronic conversion module, 302 is the electrical link, and 303 is the external optical fiber link. In the optoelectronic conversion module, 3011 is the optical transmitter, 3012 is the optical receiver, 3013 is the silicon-based optical switching unit on the transmitter side, 3014 is the silicon-based optical switching unit on the receiver side, 3015 is the high-speed optical transmitter assembly, 3016 is the low-speed optical transmitter assembly, 3017 is the high-speed optical receiver assembly, 3018 is the low-speed optical receiver assembly, and 3019 is the MCU microcontroller. In the electrical link, 3021 is the high-speed signal electrical link on the optical transmitter side, 3022 is the low-speed signal electrical link on the optical transmitter side, 3023 is the high-speed signal electrical link on the optical receiver side, and 3024 is the low-speed signal electrical link on the optical receiver side. In the external optical fiber link, 3031 is the optical fiber on the optical transmitter side, and 3032 is the optical fiber on the optical receiver side.

[0044] When a device sends a high-speed data signal or a low-speed auxiliary signal of the PCIe protocol via an optical fiber link, the MCU microcontroller detects the low-speed signal electrical link to determine whether the current link is transmitting a low-speed auxiliary signal. If no low-speed auxiliary electrical signal is detected in the low-speed signal electrical link, the MCU microcontroller controls the driver in the silicon-based optical switching unit at the transmitting end to transmit the high-speed data optical signal transmitted via the high-speed optical transmitting component outward through the optical fiber. If a low-speed auxiliary electrical signal is detected in the low-speed signal electrical link, the MCU microcontroller controls the driver in the silicon-based optical switching unit at the transmitting end to switch the optical path and transmit the low-speed auxiliary optical signal transmitted via the low-speed optical transmitting component outward through the optical fiber.

[0045] It should be noted that the first optical path in this embodiment corresponds to the optical transmission path of the high-speed data signal, and the second optical path corresponds to the optical transmission path of the low-speed auxiliary signal. As shown in Figure 4, there can be two optical paths in the optical switching switch unit, black and light gray correspond to the first optical path, and dark gray and light gray correspond to the second optical path.

[0046] Optionally, the method further includes: when outputting the first optical signal to the output port through the first optical path, controlling the second optical path to be in a disconnected state.

[0047] Optionally, the method further includes: when outputting the second optical signal to the output port through the second optical path, controlling the first optical path to be in a disconnected state.

[0048] It should be noted that the aforementioned disconnected state may refer to a lack of connection between the optical path and the output port. In an optical path in the disconnected state, the optical signal cannot be transmitted to the output port (i.e., the optical fiber input). As shown in FIG5 , in part (a) of FIG5 , a first optical signal can be output to the output port via the first optical path. At this time, the second optical path is in the disconnected state, and the optical signal cannot be output to the output port via the second optical path. In part (b) of FIG5 , a second optical signal can be output to the output port via the second optical path. At this time, the first optical path is in the disconnected state, and the optical signal cannot be output to the output port via the first optical path.

[0049] By combining high-speed and low-speed optical components in a co-packaged design, on the one hand, it can prevent low-speed signals from occupying additional optoelectronic conversion modules; on the other hand, it can prevent low-speed signals from being superimposed on high-speed signal transmission and affecting the quality of high-speed signals.

[0050] Optionally, the high-speed optical transmitting component and the low-speed optical transmitting component are used to convert electrical signals into optical signals, and may be components of the same performance or components of different performance. The high-speed optical receiving component and the low-speed optical receiving component are used to convert optical signals into electrical signals, and may be components of the same performance or components of different performance. The optical transmitting unit and the transmitting-end silicon-based optical switching switch unit may be directly coupled or coupled via optical fiber to achieve the transmission of optical signals. The optical receiving unit and the receiving-end silicon-based optical switching switch unit may be directly coupled or coupled via optical fiber to achieve the transmission of optical signals. The number of high-speed optical transmitting components and the number of low-speed optical transmitting components in the optical transmitting unit may be the same or different. The number of high-speed optical receiving components and the number of low-speed optical receiving components in the optical receiving unit may be the same or different.

[0051] The packaging form of the optoelectronic conversion device can adopt the packaging of the existing optical module, or it can be designed as an on-board optical module. The number of high-speed and low-speed components in the optical transmitting unit / optical receiving unit inside the optoelectronic conversion device is relatively flexible, which is convenient for expansion and is conducive to the interconnection of optical signals between PCIe protocol devices.

[0052] Optionally, the method in this embodiment can also be used for the transmission of high-speed serial protocol optical signals such as CXL (Compute Express Link, an open industrial standard for high-bandwidth, low-latency device interconnection) and UCIe (Universal Chiplet Interconnect Express).

[0053] Through the above steps, when the first optical transmission component obtains the first electrical signal sent by the first device, the first electrical signal is converted into a first optical signal through the first optical transmission component, the first optical signal is input into the first optical switching switch unit, and the first optical signal is output to the output port of the first optical switching switch unit through the first optical path in the first optical switching switch unit, wherein the first optical transmission component is configured to convert the first type of electrical signal into an optical signal, the first electrical signal is a first type of electrical signal, and the output port is connected to the optical fiber; when the second optical transmission component obtains the second electrical signal sent by the first device, the second electrical signal is converted into a second optical signal through the second optical transmission component, the second optical signal is input into the first optical switching switch unit, and the second optical signal is output to the output port of the first optical switching switch unit through the second optical path in the first optical switching switch unit, wherein the second optical transmission component is configured to convert the second type of electrical signal into an optical signal, the second electrical signal is a second type of electrical signal, which solves the problem of low signal transmission efficiency in the signal transmission method in the prior art and improves the efficiency of signal transmission.

[0054] The execution entity of the above steps may be a server, a terminal, etc., but is not limited thereto.

[0055] In an exemplary embodiment, the above method further includes steps S11-S12.

[0056] S11, when the first optical transmission component obtains the first electrical signal sent by the first device and the second optical transmission component obtains the second electrical signal sent by the first device, the second optical signal is input into the first optical switching switch unit, and it is determined whether the second electrical signal is fully output to the output port.

[0057] S12 : When it is determined that all the second electrical signals are output to the output port, input the first optical signal into the first optical switching unit.

[0058] In order to avoid frequent switching of the states of the first optical path and the second optical path by the optical switching switch unit, in this embodiment, when it is detected that the second electrical signal exists in the electrical signal sent by the first device, the second electrical signal can be transmitted first and the first optical path can be interrupted. After it is determined that the second electrical signal has been fully transmitted (that is, there is no second electrical signal in the electrical signal sent by the first device), the second optical path can be interrupted and the transmission of the first electrical signal can be started.

[0059] It should be noted that for the optoelectronic conversion module that emits optical signals, the method for determining whether there is a second electrical signal in the electrical signal can be to use the MCU to detect whether an electrical signal is transmitted in the low-speed signal electrical link, or to use the MCU to directly detect the transmission frequency of the electrical signal sent by the currently acquired device.

[0060] Through this embodiment, when it is detected that the device sends a high-speed data signal and a low-speed auxiliary signal at the same time, it can first switch to the optical path that transmits the low-speed auxiliary signal, and then transmit the high-speed data signal after the low-speed auxiliary signal is transmitted, thereby avoiding frequent switching of the first optical path and the second optical path states by the optical switching switch unit.

[0061] In an exemplary embodiment, outputting the first optical signal to the output port of the first optical switch unit through the first optical path in the first optical switch unit includes step S21.

[0062] S21, controlling the first optical path to be in an on state, and outputting the first optical signal to the output port through the first optical path.

[0063] It should be noted that the above-mentioned conductive state may mean that the optical path is connected to the output port, or that the optical signal can be transmitted along the entire distance of the corresponding optical path. In the optical path in the conductive state, the optical signal can be transmitted to the output port along the entire distance of the corresponding optical path.

[0064] It should be noted that the above-mentioned conductive state may mean that the optical path is connected to the output port, or that the optical signal can be transmitted along the entire distance of the corresponding optical path. In the optical path in the conductive state, the optical signal can be transmitted to the output port along the entire distance of the corresponding optical path.

[0065] Optionally, controlling the first optical path to be in a conducting state includes: controlling a first group of optical waveguides on the first optical path to be in a straight-through state, wherein when the first group of optical waveguides is in the straight-through state, the first optical path is in a conducting state, and the first group of optical waveguides includes one or more optical waveguides.

[0066] It should be noted that the transmission of the optical signal in the optoelectronic conversion module in this embodiment can be carried out through an optical waveguide. As shown in Figure 6, the optical signal can be continuously reflected in the optical waveguide to achieve transmission of the optical signal. The first optical path can be composed of a first group of optical waveguides. As shown in Figure 4, the first group of optical waveguides can include one optical waveguide, that is, the paths indicated by 4-1, 4-2, and 4-5 in Figure 4 are composed of one optical waveguide. The first group of optical waveguides can also include multiple optical waveguides, that is, the paths indicated by 4-1 and 4-2 in Figure 4 correspond to two optical waveguides respectively, and the path indicated by 4-5 corresponds to one optical waveguide.

[0067] The straight-through state may refer to a transmission state corresponding to when the optical signal propagates in the optical waveguide in the same direction as it entered the optical waveguide. The straight-through state of the first group of optical waveguides may refer to the optical signal propagating in the first group of optical waveguides in the same direction as it entered the optical waveguide.

[0068] Optionally, the method further includes: when controlling the first group of optical waveguides on the first optical path to be in a straight-through state, controlling the optical waveguides other than the first target optical waveguide in the second group of optical waveguides on the second optical path to be in a straight-through state, wherein the first target optical waveguide is an optical waveguide included in both the first group of optical waveguides and the second group of optical waveguides, and when the second group of optical waveguides is in the straight-through state, the second optical path is in a disconnected state; or

[0069] When the first group of optical waveguides on the first optical path is controlled to be in a straight-through state, at least part of the optical waveguides in the second group of optical waveguides on the second optical path, except the first target optical waveguide, is controlled to be in a deflected state, wherein when at least part of the optical waveguides in the second group of optical waveguides are in the deflected state, the second optical path is in a disconnected state.

[0070] It should be noted that the second optical path may be composed of a second group of optical waveguides. As shown in FIG4 , the second group of optical waveguides may include multiple optical waveguides. That is, the paths indicated by 4-3 and 4-4 in FIG4 correspond to two optical waveguides, respectively, and the path indicated by 4-5 corresponds to one optical waveguide. The first target optical waveguide may be an optical waveguide included in both the first group of optical waveguides and the second group of optical waveguides, that is, an optical waveguide corresponding to the path indicated by 4-5 in FIG4 .

[0071] When it is necessary to control the first group of optical waveguides on the first optical path to be in a straight-through state, the second group of optical waveguides on the second optical path can also be controlled to be in a straight-through state. Since the optical waveguides in the straight-through state can only transmit optical signals in the direction in which the optical signals enter the optical waveguides, when the second group of optical waveguides is in the straight-through state, the second optical signal transmitted by the second optical transmitting assembly can only be transmitted in part of the optical waveguides in the second group of optical waveguides, and cannot enter the optical waveguide corresponding to 4-4 in the second group of optical waveguides connected to the target optical waveguide as shown in Figure 4, and therefore cannot enter the target optical waveguide for transmission, and the second optical path is in a disconnected state.

[0072] In addition, when the first group of optical waveguides on the first optical path is controlled to be in a straight-through state, in order to prevent the second group of optical waveguides from transmitting part of the second optical signal to the output port, thereby affecting the transmission quality of the first optical signal, it is also possible to control the first group of optical waveguides on the first optical path to be in a straight-through state and control at least part of the optical waveguides in the second group of optical waveguides on the second optical path, except for the first target optical waveguide, to be in a deflected state.

[0073] The deflection state described above may refer to a transmission state corresponding to when the direction of the optical signal propagating through the optical waveguide is different from the direction in which the optical signal enters the optical waveguide. When at least some of the optical waveguides in the second group of optical waveguides are in the deflection state, optical signals entering the second group of optical waveguides may be deflected to other waveguides that are not connected to the output port.

[0074] Optionally, controlling the first group of optical waveguides on the first optical path to be in a straight-through state includes: when the first group of optical waveguides includes N optical waveguides and N drivers and N resonators are provided in the first optical switching switch unit, controlling the N drivers to be in a non-working state, wherein N is a positive integer greater than or equal to 1, and when the i-th driver among the N drivers is in the non-working state, the i-th driver is configured to stop driving the i-th resonator of the N resonators, so that the i-th optical waveguide among the N optical waveguides is in a straight-through state, and i is a positive integer greater than or equal to 1 and less than or equal to N.

[0075] In this embodiment, the optical waveguide can be switched between a straight-through state and a deflected state using a driver and a resonator. A driver can drive a resonator to place the optical waveguide in a deflected state. When the resonator is deflected, the transmission direction of the optical signal can change. The resonator can be a microring resonator. Microring resonators and optical waveguides have ultrafast response characteristics. Leveraging these ultrafast response characteristics, the impact of transmission channel switching on signal transmission can be minimized, thereby improving signal transmission efficiency.

[0076] As shown in part a of FIG5 , the MCU microcontroller controls the driver in the transmitting-end silicon-based optical switching unit 3013 (the icon D (Drive) identical to the driver 502 in FIG5 corresponds to the driver at different optical waveguides), driving the first microring resonator 505 and the second microring resonator 504 to put the first optical waveguide 501 in a straight-through state, thereby transmitting the high-speed data optical signal transmitted through the high-speed optical transmission component outward through the optical fiber 3031.

[0077] Optionally, controlling at least some of the optical waveguides other than the first target optical waveguide in the second group of optical waveguides on the second optical path to be in a deflected state includes: when the optical waveguides other than the first target optical waveguide in the second group of optical waveguides include M optical waveguides, and the first optical switch unit is provided with M drivers and M resonators, controlling P drivers among the M drivers to be in an operating state, wherein M is a positive integer greater than or equal to 1, P is a positive integer greater than or equal to 1 and less than or equal to M, and when the j-th driver among the M drivers is in an operating state, When the driver is in an operating state, the j-th driver is configured to drive the j-th resonator among the M resonators to put the j-th optical waveguide among the M optical waveguides into a deflection state, where j is a positive integer greater than or equal to 1 and less than or equal to M; wherein at least part of the optical waveguides include P optical waveguides among the M optical waveguides, and when one of the P drivers is in an operating state, one of the P drivers is configured to drive one of the P resonators among the M resonators to put one of the P optical waveguides into a deflection state.

[0078] It should be noted that the driver in the working state can drive the resonator to put the optical waveguide into a deflected state. The optical waveguide in the deflected state is shown in Figure 7, and the transmission direction of the optical signal can be deflected. The driver in the non-working state can drive the resonator to put the optical waveguide into a straight-through state.

[0079] This embodiment utilizes the small size and fast response of the resonator composed of the microring resonator and the optical waveguide to facilitate the integrated deployment of the optoelectronic conversion device, and can achieve rapid switching control of the transmission path of the optical signal. Only the optical fiber required for high-speed optical signal transmission is required, saving the optical fiber required for low-speed auxiliary signal transmission.

[0080] In an exemplary embodiment, outputting the second optical signal to the output port of the first optical switch unit through the second optical path in the first optical switch unit includes step S31.

[0081] S31, controlling the second optical path to be in an on state, and outputting the second optical signal to the output port through the second optical path.

[0082] In this embodiment, when the second optical signal is output to the output port of the first optical switch unit through the second optical path in the first optical switch unit, the second optical path needs to be controlled to be in an on state. Correspondingly, the first optical path corresponding to the first optical signal can be in an off state at this time.

[0083] Optionally, controlling the second optical path to be in a conducting state includes: controlling a second group of optical waveguides on the second optical path to be in a deflected state, wherein when the second group of optical waveguides is in the deflected state, the second optical path is in a conducting state, and the second group of optical waveguides includes one or more optical waveguides.

[0084] It should be noted that the deflection state of the second group of optical waveguides in this embodiment may be different from the deflection state of at least some of the optical waveguides in the second group of optical waveguides except the first target optical waveguide in the aforementioned embodiment, that is, the two previous and next deflection states can respectively change the transmission direction of the optical signal into different directions.

[0085] As shown in part b of FIG5 , when a low-speed auxiliary electrical signal is detected to be transmitted in a low-speed signal electrical link, the MCU microcontroller controls the driver in the silicon-based optical switching switch unit 3013 at the transmitting end, drives the microring resonator to deflect the optical waveguide, switches the optical waveguide path, and transmits the low-speed auxiliary optical signal transmitted through the low-speed optical transmitting component outward through the optical fiber. The low-speed auxiliary optical signal enters the optical fiber 3031 under the action of the third microring resonator 503 and the second microring resonator 504.

[0086] Optionally, controlling the second group of optical waveguides on the second optical path to be in a deflected state includes: when the second group of optical waveguides includes K optical waveguides and K drivers and K resonators are provided in the first optical switching switch unit, controlling the K drivers to be in an operating state, wherein K is a positive integer greater than 1, and when the t-th driver among the K drivers is in an operating state, the t-th driver is configured to drive the t-th resonator of the K resonators to make the t-th optical waveguide among the K optical waveguides in a deflected state, and t is a positive integer greater than or equal to 1 and less than or equal to K.

[0087] It should be noted that the K optical waveguides include M optical waveguides and a first target optical waveguide, the optical waveguides in the second group of optical waveguides excluding the first target optical waveguide include M optical waveguides, and the first target optical waveguide is an optical waveguide included in both the first group of optical waveguides and the second group of optical waveguides.

[0088] The K resonators may correspond to the third microring resonator 503 and the second microring resonator 504 in FIG. 5 .

[0089] Optionally, the above method further includes: when controlling the second group of optical waveguides on the second optical path to be in a deflected state, controlling at least part of the optical waveguides in the first group of optical waveguides on the first optical path except for the first target optical waveguide to be in a deflected state, wherein the first target optical waveguide is an optical waveguide included in both the first group of optical waveguides and the second group of optical waveguides, and when at least part of the optical waveguides in the first group of optical waveguides except for the first target optical waveguide are in a deflected state, the first optical path is in a disconnected state.

[0090] It should be noted that, in order to prevent interference between the first and second optical signals when transmitting the second optical signal, while controlling the second group of optical waveguides on the second optical path to be in a deflected state to transmit the second optical signal, it is also necessary to control at least some of the optical waveguides in the first group of optical waveguides on the first optical path, excluding the first target optical waveguide, to be in a deflected state. As shown in FIG5 , the first optical signal, under the action of the first microring resonator 505, enters an optical waveguide that is not connected to the optical fiber 3031. The deflection state here can be similar to that described in the previous embodiment and is not further described in this embodiment.

[0091] At least some of the optical waveguides in the first group of optical waveguides except the first target optical waveguide are in a deflected state in order to control the first optical path to be in a disconnected state, that is, to prevent the first optical signal from being transmitted to the first target optical waveguide.

[0092] Optionally, controlling at least some of the optical waveguides other than the first target optical waveguide in the first group of optical waveguides on the first optical path to be in a deflected state includes: when the optical waveguides other than the first target optical waveguide in the first group of optical waveguides include T optical waveguides, and the first optical switch unit is provided with T drivers and T resonators, controlling Q drivers among the T drivers to be in an operating state, wherein T is a positive integer greater than or equal to 1, Q is a positive integer greater than or equal to 1 and less than or equal to T, and when the kth driver among the T drivers is in an operating state When the driver is in an operating state, the kth driver is configured to drive the kth resonator among the T resonators so that the kth optical waveguide among the T optical waveguides is in a deflection state, where k is a positive integer greater than or equal to 1 and less than or equal to T; wherein at least part of the optical waveguides include Q optical waveguides among the T optical waveguides, and when one of the Q drivers is in an operating state, one of the Q drivers is configured to drive one of the Q resonators among the T resonators so that the one of the Q optical waveguides is in a deflection state.

[0093] In this embodiment, the process of switching the signal transmission at the transmitting end may be steps S802 to S808 in the flowchart shown in FIG8 .

[0094] In step S802 , the low-speed auxiliary electrical signal is transmitted to the photoelectric conversion module via the electrical link, and the MCU detects that the low-speed auxiliary electrical signal is transmitted to the photoelectric conversion module.

[0095] In step S804, the MCU controls the driver in the silicon-based optical switching unit at the transmitting end to adjust the working state of the microring resonator. At the same time, the low-speed auxiliary electrical signal is transmitted to the optical transmitting unit and converted into an optical signal through the low-speed optical transmitting component.

[0096] In step S806 , the high-speed optical signal transmitted through the optical waveguide is deflected under the coupling of the microring resonator and cannot be transmitted to the external optical fiber through the optical waveguide; the low-speed optical signal transmitted through the optical waveguide is deflected twice under the coupling of the optical waveguide and is then transmitted to the external optical fiber through the optical waveguide.

[0097] In step S808, the MCU detects that no low-speed auxiliary electrical signal is input, determines that the transmission of the low-speed auxiliary electrical signal is completed, and controls the sending-end silicon-based optical switching unit through the MCU to restore the optical waveguide through state.

[0098] Through this embodiment, when transmitting the second optical signal, the second group of optical waveguides on the second optical path is controlled to be in a deflected state to connect the second optical path, and at least some of the optical waveguides in the first group of optical waveguides, except for the first target optical waveguide, are controlled to be in a deflected state to disconnect the first optical path. This can avoid interference between the two different types of optical signals and improve the success rate of signal transmission.

[0099] In an exemplary embodiment, the above method further includes steps S41 - S42 .

[0100] S41. When a third optical signal transmitted through an optical fiber is received at an input port of the second optical switching switch unit, the third optical signal is output to the first optical receiving component through a third optical path in the second optical switching switch unit, and the third optical signal is converted into a third electrical signal through the first optical receiving component, wherein the first optical receiving component is configured to convert the optical signal into an electrical signal of a first type, and the third electrical signal is an electrical signal of the first type.

[0101] S42. When the input port of the second optical switching switch unit receives a fourth optical signal transmitted through the optical fiber, the fourth optical signal is output to the second optical receiving component through a fourth optical path in the second optical switching switch unit, and the fourth optical signal is converted into a fourth electrical signal by the second optical receiving component, wherein the second optical receiving component is configured to convert the optical signal into an electrical signal of the second type, and the fourth electrical signal is an electrical signal of the second type.

[0102] It should be noted that a device can both send and receive signals via a photoelectric conversion module. The photoelectric conversion module that sends signals can be the same module as the photoelectric conversion module that receives signals (as shown in Figure 3, where the light emitting unit and light receiving unit are in the same module), or they can be different modules. The light emitting unit and light receiving unit can each correspond to an optical switching unit.

[0103] Furthermore, the optical receiving unit, like the optical transmitting unit, can include receiving components that process different types of signals. Because the bandwidth and hardware requirements for the two types differ, to ensure efficient signal processing, after receiving an optical signal, the second optical switching unit corresponding to the optical receiving unit can determine whether to transmit the optical signal to the corresponding optical receiving component based on the type of optical signal.

[0104] The third optical path may be a path from the optical switching unit to the optical receiving component corresponding to the first type of electrical signal. When the first type is a high-speed data signal, the third optical path is the path of the optical signal from the optical switching unit to the high-speed optical receiving component, i.e., a high-speed data link. The fourth optical path may be a path from the optical switching unit to the optical receiving component corresponding to the second type of electrical signal. When the second type is a low-speed auxiliary signal, the fourth optical path is the path of the optical signal from the optical switching unit to the low-speed optical receiving component, i.e., a low-speed control link.

[0105] Through this embodiment, high-speed data signals use high-bandwidth high-speed optical transmission devices for optical signal conversion, and low-speed auxiliary signals use low-bandwidth low-speed optical transmission components for optical signal conversion, which can effectively reduce the cost of optoelectronic conversion equipment.

[0106] In an exemplary embodiment, the above method further includes steps S51 - S54 .

[0107] S51, when the input port of the second optical switching switch unit receives a target optical signal transmitted through the optical fiber, the target optical signal is output to the first optical receiving component through the third optical path, and the target optical signal is converted into a target electrical signal by the first optical receiving component.

[0108] S52: Acquire a first transmission frequency of the target electrical signal.

[0109] S53: When the first transmission frequency is less than a preset frequency threshold, determine that the target electrical signal is a second type of electrical signal, and determine the optical signal of the input port of the second optical switching unit after the moment of receiving the target optical signal as a third optical signal.

[0110] S54: When the first transmission frequency is greater than or equal to a preset frequency threshold, determine that the target electrical signal is a first type of electrical signal, and determine the optical signal of the input port of the second optical switching switch unit after the moment of receiving the target optical signal as a fourth optical signal.

[0111] Considering that it is difficult to determine the type of electrical signal corresponding to an optical signal, and that the first optical receiving component, as a component for receiving high-speed data signals, can provide higher bandwidth and transmission efficiency for the signal, in this embodiment, the received optical signal can be first transmitted to the first optical receiving component corresponding to the first type, where the first optical receiving component converts the optical signal and determines the type of the current signal based on the electrical signal output by the first optical receiving component. If the current signal type is the first type, the current transmission path can be unchanged, and the subsequent signal can continue to be output to the first optical receiving component via the third optical path. During this process, the type of the electrical signal output by the first optical receiving component can be continuously detected. If the electrical signal type is detected to be the second type, the current transmission path can be immediately changed, and the subsequent signal can be output to the second optical receiving component via the fourth optical path. The type of the electrical signal output by the second optical receiving component can be continuously detected. When it is determined that the type of the electrical signal output by the second optical receiving component is the first type, the signal is immediately switched back to the third optical path.

[0112] Optionally, in order to avoid the waste of signal or incomplete signal transmission due to the optical signal corresponding to the second type of electrical signal being partially input into the optical receiving component corresponding to the first type, a signal that does not contain the information to be transmitted can be added to the initial signal segments of the two types of electrical signals sent to the device on the transmitting end side.

[0113] It should be noted that, in this embodiment, the type of electrical signal output by the optical receiving component can be determined by the MCU through the transmission frequency of the electrical signal. By sampling and counting the electrical signal, when it is identified that the transmission frequency of the electrical signal is lower than the preset frequency threshold (e.g., 100 MHz), it can be considered that the optical signal received at this time is corresponding to the low-speed auxiliary signal; when the frequency of the incoming signal is higher than the preset frequency threshold, it can be considered that the optical signal incoming at this time is corresponding to the high-speed data signal.

[0114] Through this embodiment, by detecting whether there are low-speed control electrical signals in the high-speed data link and the low-speed control link, the type of electrical signal corresponding to the currently received optical signal is determined, thereby controlling the transmission state of the silicon-based optical switching switch unit at the receiving end, and improving the resource utilization of the optical receiving components corresponding to the two types.

[0115] In an exemplary embodiment, the above method further includes step S61.

[0116] S61 , when outputting the third optical signal to the first optical receiving component through the third optical path, controlling the fourth optical path to be in a disconnected state.

[0117] In an exemplary embodiment, outputting the third optical signal to the first optical receiving component through the third optical path in the second optical switching unit includes: controlling the third optical path to be in a conducting state, and outputting the third optical signal to the first optical receiving component through the third optical path.

[0118] Optionally, the method further includes: when outputting the fourth optical signal to the second optical receiving component through the fourth optical path, controlling the third optical path to be in a disconnected state.

[0119] To prevent the optical switching unit from transmitting two types of optical signals simultaneously to the same receiving component, causing the two optical signals to interfere with each other, and to ensure that the optical signals can be accurately transmitted to the corresponding type of optical receiving component, when transmitting one optical signal, the optical path corresponding to that optical signal can be controlled to be in the conductive state, and the optical path corresponding to the other optical signal can be switched to the disconnected state. The conductive state here can mean that the optical signal can be transmitted along the entire distance of the corresponding optical path. The disconnected state can mean that the optical signal cannot be transmitted along the entire distance of the corresponding optical path.

[0120] As shown in FIG9 , in part a of FIG9 , when the third optical signal is transmitted, the third optical signal can be transmitted out of the optical switching switch unit through the third optical path, but the third optical signal cannot be transmitted out of the optical switching switch unit through the fourth optical path. In part b of FIG9 , when the fourth optical signal is transmitted, the fourth optical signal can be transmitted out of the optical switching switch unit through the fourth optical path, but the fourth optical signal cannot be transmitted out of the optical switching switch unit through the third optical path.

[0121] Through this embodiment, when transmitting one type of optical signal, the optical path corresponding to that type is switched to the on state, and the optical path corresponding to the other type is switched to the off state, thereby avoiding optical signal transmission failure caused by optical signal transmission errors and improving the transmission efficiency of the optical signal.

[0122] In an exemplary embodiment, controlling the third optical path to be in a conducting state includes step S71 .

[0123] S71, controlling a third group of optical waveguides on a third optical path to be in a straight-through state, wherein when the third group of optical waveguides is in the straight-through state, the third optical path is in a conducting state, and the third group of optical waveguides includes one or more optical waveguides.

[0124] In this embodiment, the optical signal is transmitted to the optical receiving component, which can also be carried out through an optical waveguide. The third optical path can be composed of a third group of optical waveguides, as shown in Figure 10. The third group of optical waveguides can include an optical waveguide, and the paths indicated by 10-1 and 10-4 in Figure 10 correspond to one optical waveguide. The third group of optical waveguides can also include multiple optical waveguides, that is, the paths indicated by 10-1 and 10-4 in Figure 10 each correspond to an optical waveguide. In the third group of optical waveguides, the optical signal can maintain the direction of entering the optical waveguide as shown in part a of Figure 9 and output the second optical switching switch unit. The straight-through state in this embodiment can be similar to the description of the straight-through state corresponding to the first group of optical waveguides mentioned above, and will not be repeated in this embodiment.

[0125] Optionally, the above method also includes: when controlling the third group of optical waveguides on the third optical path to be in a straight-through state, controlling the optical waveguides other than the second target optical waveguide in the fourth group of optical waveguides on the fourth optical path to be in a straight-through state, wherein the second target optical waveguide is an optical waveguide included in both the third group of optical waveguides and the fourth group of optical waveguides, and when the fourth group of optical waveguides is in the straight-through state, the fourth optical path is in a disconnected state; or, when controlling the third group of optical waveguides on the third optical path to be in a straight-through state, controlling at least part of the optical waveguides other than the second target optical waveguide in the fourth group of optical waveguides on the fourth optical path to be in a deflected state, wherein when at least part of the optical waveguides in the fourth group of optical waveguides are in the deflected state, the fourth optical path is in a disconnected state.

[0126] It should be noted that the fourth optical path may be composed of a fourth group of optical waveguides. As shown in FIG10 , the fourth group of optical waveguides may include multiple optical waveguides. That is, the paths indicated by 10-2 and 10-3 in FIG10 correspond to two optical waveguides, and the path indicated by 10-4 corresponds to one optical waveguide. The second target optical waveguide may be an optical waveguide included in both the third group of optical waveguides and the fourth group of optical waveguides, that is, the optical waveguide corresponding to the path indicated by 10-4 in FIG10 .

[0127] When it is necessary to control the third group of optical waveguides on the third optical path to be in a straight-through state, the fourth group of optical waveguides on the fourth optical path can also be controlled to be in a straight-through state. Since the optical waveguides in the straight-through state can only transmit optical signals in the direction in which the optical signals enter the optical waveguides, when the fourth group of optical waveguides is in the straight-through state, the optical signal cannot enter the optical waveguide corresponding to 10-3 in the fourth group of optical waveguides connected to the target optical waveguide as shown in Figure 10, and cannot be transmitted to the fourth optical receiving component, and the fourth optical path is in a disconnected state.

[0128] Furthermore, while controlling the third group of optical waveguides on the third optical path to be in a straight-through state, it is also possible to control the third group of optical waveguides on the third optical path to be in a straight-through state while controlling at least a portion of the optical waveguides in the fourth group of optical waveguides on the fourth optical path, excluding the second target optical waveguide, to be in a deflected state. In this deflected state, optical signals can be output in a direction other than the fourth optical receiving assembly. When at least a portion of the optical waveguides in the fourth group of optical waveguides are in the deflected state, even if an optical signal is transmitted to a portion of the optical waveguides in the fourth group of optical waveguides, the optical signal entering the fourth group of optical waveguides will be deflected and cannot be output to the fourth optical receiving assembly.

[0129] It should be noted that the manner in which the second optical switching switch unit adjusts the states (straight-through state and deflected state) of the third and fourth groups of optical waveguides can be similar to the manner in which the first optical switching switch unit adjusts the states of the third and fourth groups of optical waveguides in the aforementioned embodiment, and this embodiment will not be elaborated upon here.

[0130] For example, when a device receives a high-speed data signal or a low-speed auxiliary signal of the PCIe protocol via an optical fiber link, the MCU microcontroller detects the high-speed signal electrical link and the low-speed signal electrical link to determine whether the current link is transmitting a low-speed auxiliary signal. If no low-speed auxiliary electrical signal is detected in the high-speed signal electrical link or the low-speed signal electrical link, the MCU microcontroller controls the driver in the receiving-end silicon-based optical switching unit to drive the microring resonator to put the optical waveguide in a straight-through state, transferring the optical signal transmitted via the optical fiber through the receiving-end silicon-based optical switching unit to the high-speed optical receiving component in the optical receiving unit, converting it into an electrical signal, and then transmitting it via the high-speed signal electrical link. If a low-speed auxiliary electrical signal is detected in the high-speed signal electrical link or the low-speed signal electrical link, the MCU microcontroller controls the driver in the receiving-end silicon-based optical switching unit to drive the microring resonator to put the optical waveguide in a deflected state, transferring the optical signal transmitted via the optical fiber through the receiving-end silicon-based optical switching unit to the low-speed optical receiving component in the optical receiving unit, converting it into an electrical signal, and then transmitting it via the low-speed signal electrical link.

[0131] In this embodiment, the process of switching the signal transmission at the receiving end may be steps S1102 to S1108 as shown in FIG11 .

[0132] In step S1102, the low-speed auxiliary optical signal is transmitted to the optoelectronic conversion module via the silicon-based optical switching unit, and the MCU detects whether there is a low-speed auxiliary electrical signal in the high-speed signal electrical link.

[0133] Step S1104 , when a low-speed auxiliary electrical signal is detected in the high-speed signal electrical link, the MCU controls the driver in the silicon-based optical switching unit at the receiving end to adjust the working state of the microring resonator.

[0134] In step S1106 , the low-speed auxiliary optical signal transmitted into the optical waveguide via the optical fiber is deflected twice under the coupling of the microring resonator and is transmitted to the optoelectronic conversion component corresponding to the low-speed signal link for electrical signal conversion.

[0135] In step S1108, the MCU continuously detects whether there is a low-speed auxiliary electrical signal in the low-speed signal link. After detecting that no low-speed auxiliary electrical signal is input, the MCU determines that the low-speed auxiliary optical signal transmission is completed, and then controls the receiving-end silicon-based optical switching unit to restore the optical waveguide through state.

[0136] Through this embodiment, the receiving end controls the transmission state of the receiving end silicon-based optical switching switch unit by detecting whether there are low-speed control electrical signals in the high-speed data link and the low-speed control link, and determines the state of the optical path according to the type of transmitted signal, which can ensure that the electrical and optical signals do not interfere with each other during conversion and transmission, thereby improving the signal transmission quality.

[0137] The signal transmission method in the embodiment of the present application is explained below with reference to an optional example. This optional example provides a method, device, and system for transmitting PCIe protocol optical signals. As shown in FIG12 , a system for transmitting PCIe protocol signals can be built. The system mainly consists of: device 1, a first photoelectric conversion module, an optical fiber, device 2, and a second photoelectric conversion module. Among them, device 1 includes a first PCIe interface chip, the first photoelectric conversion module includes a light emitting unit, a silicon-based optical switching switch, and an MCU, device 2 includes a second PCIe interface chip, and the second photoelectric conversion module includes a light receiving unit, a silicon-based optical switching switch unit, and an MCU.

[0138] The signal transmission method in this optional example may include a low-speed signal transmission process and a high-speed signal transmission process. The low-speed signal transmission process may be as shown in FIG13 , including steps S1301 - S1310 .

[0139] Step S1301: The first low-speed optical transmission component receives a second electrical signal sent by the first PCIe interface chip and converts the received second electrical signal into a second optical signal.

[0140] In step S1302 , the first MCU obtains a first detection signal from the second electrical signal, confirms that a low-speed control signal is being transmitted, and outputs a first control signal.

[0141] Step S13303: The first silicon-based optical switching unit enters a deflection transmission mode after receiving the first control signal.

[0142] Step S1304: The transmission path of the first optical signal is interrupted, and the source of the third optical signal transmitted in the optical fiber is switched to the second optical signal.

[0143] In step S1305 , the second silicon-based optical switching unit receives the third optical signal and converts it into a fourth optical signal.

[0144] Step S1306: The second high-speed optical receiving component converts the fourth optical signal into a third electrical signal.

[0145] Step S1307: The second MCU obtains a third detection signal from the third electrical signal, confirms that a low-speed control signal is being transmitted, and outputs a second control signal.

[0146] Step S1308: The second silicon-based optical switch unit enters the deflection transmission mode after receiving the second control signal.

[0147] Step S1309: The transmission path of the fourth optical signal is interrupted, and the third optical signal is switched to the fifth optical signal.

[0148] In step S1310, the second low-speed optical receiving component converts the fifth optical signal into a fourth electrical signal and transmits the fourth electrical signal to the second PCIe interface chip.

[0149] The high-speed signal transmission process may be as shown in FIG. 14 , including steps S1401 - S1408 .

[0150] In step S1401, the second electrical signal sent by the first PCIe interface chip is completely sent, and the first high-speed optical transmitting component receives the first electrical signal and converts it into a first optical signal.

[0151] In step S1402 , the first MCU obtains a first detection signal from the second electrical signal, confirms that no low-speed control signal is transmitted, and outputs a first control signal.

[0152] Step S1403: The first silicon-based optical switching unit enters a direct transmission mode after receiving the first control signal.

[0153] Step S1404: The transmission path of the second optical signal is interrupted, and the source of the third optical signal transmitted in the optical fiber is switched to the first optical signal.

[0154] Step S1405 : The second MCU obtains a second detection signal from the fourth electrical signal, confirms that no low-speed control signal is transmitted, and outputs a second control signal.

[0155] Step S1406: The second silicon-based optical switch unit enters a direct transmission mode after receiving the second control signal.

[0156] Step S1407: The transmission path of the fifth optical signal is interrupted, and the second silicon-based optical switching unit receives the third optical signal and converts it into a fourth optical signal.

[0157] Step S1408: The second high-speed optical receiving component converts the fourth optical signal into a third electrical signal and transmits the third electrical signal to the second PCIe interface chip.

[0158] Through this optional example, a PCIe link can be established between a host such as a server and an external device via optical fiber, and high-quality transmission of high-speed data signals and low-speed auxiliary signals can be achieved in the optical fiber link. In addition, by utilizing the small size and fast response characteristics of the resonator composed of microring resonators and optical waveguides, rapid switching control of the transmission path of the optical signal can be achieved. Only the optical fiber required for high-speed optical signal transmission is required, saving the optical fiber required for low-speed auxiliary signal transmission, effectively reducing the cost of optoelectronic conversion equipment.

[0159] It should be noted that for the aforementioned method embodiments, for the sake of simplicity, they are all expressed as a series of action combinations, but those skilled in the art should be aware that this application is not limited by the order of the actions described, because according to this application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by this application.

[0160] Through the description of the above implementation methods, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus the necessary general hardware platform, and of course it can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a non-volatile readable storage medium (such as ROM / RAM, magnetic disk, optical disk), including a number of instructions for enabling a terminal device (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods of each embodiment of the present application.

[0161] In this embodiment, a signal transmission device is also provided. The device is configured to implement the above-mentioned embodiments and preferred embodiments. Details already described are omitted for clarity. As used below, the term "module" may refer to a combination of software and / or hardware that implements a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementation using hardware, or a combination of software and hardware, is also possible and contemplated.

[0162] The device includes: a first optical transmission component, configured to, when the first optical transmission component obtains a first electrical signal sent by a first device, convert the first electrical signal into a first optical signal and input the first optical signal into a first optical switching switch unit, wherein the first optical transmission component is configured to convert a first type of electrical signal into an optical signal, and the first electrical signal is a first type of electrical signal; a second optical transmission component, configured to, when the second optical transmission component obtains a second electrical signal sent by the first device, convert the second electrical signal into a second optical signal and input the second optical signal into the first optical switching switch unit, wherein the second optical transmission component is configured to convert the second type of electrical signal into an optical signal, and the second electrical signal is a second type of electrical signal; a first optical switching switch unit, connected to the first optical transmission component and the second optical transmission component respectively, and configured to, when the first optical signal is input into the first optical switching switch unit, output the first optical signal through a first optical path in the first optical switching switch unit to an output port of the first optical switching switch unit, wherein the output port is configured to be connected to an optical fiber; and when the second optical signal is input into the first optical switching switch unit, output the second optical signal through a second optical path in the first optical switching switch unit to the output port.

[0163] In an exemplary embodiment, the device also includes: a controller, connected to the first optical switching switch unit, and configured to control the first optical path to be in an on state and the second optical path to be in an off state when the first optical signal is input into the first optical switching switch unit; and to control the second optical path to be in an on state and the first optical path to be in an off state when the second optical signal is input into the first optical switching switch unit.

[0164] In an exemplary embodiment, a first optical switching switch unit includes: N drivers and N resonators, wherein a first optical path includes a first group of optical waveguides, and the first group of optical waveguides includes N optical waveguides, where N is a positive integer greater than or equal to 1; wherein a controller is configured to control the N drivers to be in an operating state or a non-operating state, and when the i-th driver among the N drivers is in the non-operating state, the i-th driver is configured to stop driving the i-th resonator of the N resonators, so that the i-th optical waveguide among the N optical waveguides is in a straight-through state, where i is a positive integer greater than or equal to 1 and less than or equal to N. When the first group of optical waveguides is in the straight-through state, the first optical path is in a conducting state.

[0165] In an exemplary embodiment, a first optical switching switch unit includes: M drivers and M resonators, wherein the second optical path includes a second group of optical waveguides, the first optical path includes a first group of optical waveguides, the optical waveguides in the second group of optical waveguides excluding a first target optical waveguide include M optical waveguides, the first target optical waveguide is an optical waveguide included in both the first group of optical waveguides and the second group of optical waveguides, and M is a positive integer greater than or equal to 1; wherein a controller is configured to control the M drivers to be in an operating state or in a non-operating state, and when the jth driver among the M drivers is in an operating state, the jth driver is configured to drive the jth resonator among the M resonators to cause the jth optical waveguide among the M optical waveguides to be in a deflected state, and j is a positive integer greater than or equal to 1 and less than or equal to M.

[0166] In an exemplary embodiment, the second optical switching switch unit is connected to the first optical receiving component and the second optical receiving component, respectively, and is configured to output the third optical signal to the first optical receiving component through the third optical path in the second optical switching switch unit when the input port of the second optical switching switch unit receives a third optical signal transmitted via the optical fiber; and output the fourth optical signal to the second optical receiving component through the fourth optical path in the second optical switching switch unit when the input port of the second optical switching switch unit receives a fourth optical signal transmitted via the optical fiber; the first optical receiving component is configured to convert the third optical signal into a third electrical signal, wherein the first optical receiving component is configured to convert the optical signal into a first type of electrical signal, and the third electrical signal is a first type of electrical signal; the second optical receiving component is configured to convert the fourth optical signal into a fourth electrical signal, wherein the second optical receiving component is configured to convert the optical signal into a second type of electrical signal, and the fourth electrical signal is a second type of electrical signal.

[0167] An embodiment of the present application further provides a computer non-volatile readable storage medium, in which a computer program is stored, wherein the computer program is configured to execute the steps of any of the above method embodiments when running.

[0168] In an exemplary embodiment, the above-mentioned computer non-volatile readable storage medium may include but is not limited to: a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk or an optical disk, and other media that can store computer programs.

[0169] An embodiment of the present application further provides an electronic device, comprising a memory and a processor, wherein the memory stores a computer program, and the processor is configured to run the computer program to execute the steps in any one of the above method embodiments.

[0170] In an exemplary embodiment, the electronic device may further include a transmission device and an input / output device, wherein the transmission device is connected to the processor, and the input / output device is connected to the processor.

[0171] For specific examples in this embodiment, reference may be made to the examples described in the above embodiments and exemplary implementation modes, and this embodiment will not be described in detail here.

[0172] Obviously, those skilled in the art should understand that the modules or steps of the present application described above can be implemented using a general-purpose computing device, they can be concentrated on a single computing device, or distributed across a network composed of multiple computing devices, they can be implemented using program code executable by the computing device, and thus, they can be stored in a storage device and executed by the computing device, and in some cases, the steps shown or described can be performed in a different order than herein, or they can be fabricated into separate integrated circuit modules, or multiple modules or steps can be fabricated into a single integrated circuit module for implementation. Thus, the present application is not limited to any specific combination of hardware and software.

[0173] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. made within the principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A signal transmission method, characterized in that: include: In the case where the first optical transmission component obtains the first electrical signal sent by the first device, the first electrical signal is converted into a first optical signal through the first optical transmission component, the first optical signal is input into a first optical switching switch unit, and the first optical signal is output to an output port of the first optical switching switch unit through a first optical path in the first optical switching switch unit, wherein the first optical transmission component is configured to convert a first type of electrical signal into an optical signal, the first electrical signal is an electrical signal of the first type, and the output port is connected to an optical fiber; In the case where the second optical transmission component obtains the second electrical signal sent by the first device, the second electrical signal is converted into a second optical signal by the second optical transmission component, the second optical signal is input into the first optical switching switch unit, and the second optical signal is output to the output port of the first optical switching switch unit through the second optical path in the first optical switching switch unit, wherein the second optical transmission component is configured to convert the second type of electrical signal into an optical signal, and the second electrical signal is the second type of electrical signal.

2. The method according to claim 1, characterized in that The method further comprises: When the first optical transmitting component obtains the first electrical signal sent by the first device and the second optical transmitting component obtains the second electrical signal sent by the first device, the second optical signal is input into the first optical switching unit, and it is determined whether the second electrical signal is output to the output port in its entirety; When it is determined that the second electrical signal is entirely output to the output port, the first optical signal is input to a first optical switching unit.

3. The method according to claim 1, characterized in that The method further includes: when outputting the first optical signal to the output port through the first optical path, controlling the second optical path to be in a disconnected state.

4. The method according to claim 1, characterized in that The method further includes: when outputting the second optical signal to the output port through the second optical path, controlling the first optical path to be in a disconnected state.

5. The method according to claim 1, characterized in that The step of outputting the first optical signal to an output port of the first optical switching switch unit through a first optical path in the first optical switching switch unit comprises: The first optical path is controlled to be in an on state, and the first optical signal is output to the output port through the first optical path.

6. The method according to claim 5, characterized in that The controlling the first light path to be in a conducting state comprises: A first group of optical waveguides on the first optical path is controlled to be in a straight-through state, wherein when the first group of optical waveguides is in the straight-through state, the first optical path is in the conducting state, and the first group of optical waveguides includes one or more optical waveguides.

7. The method according to claim 6, characterized in that The method further comprises: When the first group of optical waveguides on the first optical path is controlled to be in a straight-through state, the optical waveguides other than the first target optical waveguide in the second group of optical waveguides on the second optical path are controlled to be in a straight-through state, wherein the first target optical waveguide is an optical waveguide included in both the first group of optical waveguides and the second group of optical waveguides, and when the second group of optical waveguides is in the straight-through state, the second optical path is in a disconnected state; or When the first group of optical waveguides on the first optical path are controlled to be in a straight-through state, at least part of the optical waveguides in the second group of optical waveguides on the second optical path except the first target optical waveguide are controlled to be in a deflected state, wherein when the at least part of the optical waveguides in the second group of optical waveguides are in the deflected state, the second optical path is in a disconnected state.

8. The method according to claim 6, characterized in that The controlling the first group of optical waveguides on the first optical path to be in a straight-through state comprises: In a case where the first group of optical waveguides includes N optical waveguides, and N drivers and N resonators are provided in the first optical switching switch unit, the N drivers are controlled to be in a non-working state, wherein N is a positive integer greater than or equal to 1, and when the i-th driver among the N drivers is in the non-working state, the i-th driver is configured to stop driving the i-th resonator of the N resonators, so that the i-th optical waveguide among the N optical waveguides is in the through state, and i is a positive integer greater than or equal to 1 and less than or equal to N.

9. The method according to claim 7, characterized in that: The controlling at least part of the optical waveguides in the second group of optical waveguides on the second optical path except the first target optical waveguide to be in a deflected state comprises: In a case where the optical waveguides other than the first target optical waveguide in the second group of optical waveguides include M optical waveguides, and the first optical switching switch unit is provided with M drivers and M resonators, P drivers among the M drivers are controlled to be in an operating state, wherein M is a positive integer greater than or equal to 1, and P is a positive integer greater than or equal to 1 and less than or equal to M, and when the jth driver among the M drivers is in the operating state, the jth driver is configured to drive the jth resonator among the M resonators to make the resonator in the M optical waveguides The jth optical waveguide is in the deflection state, where j is a positive integer greater than or equal to 1 and less than or equal to M; Wherein, the at least part of the optical waveguides includes P optical waveguides among the M optical waveguides, and when one of the P drivers is in the working state, the one of the P drivers is configured to drive one of the P resonators among the M resonators to make one of the P optical waveguides in the deflection state.

10. The method according to claim 1, characterized in that The step of outputting the second optical signal to the output port of the first optical switching switch unit through the second optical path in the first optical switching switch unit comprises: The second optical path is controlled to be in an on state, and the second optical signal is output to the output port through the second optical path.

11. The method according to claim 10, characterized in that The controlling the second light path to be in a conducting state comprises: A second group of optical waveguides on the second optical path is controlled to be in a deflected state, wherein when the second group of optical waveguides is in the deflected state, the second optical path is in the conducting state, and the second group of optical waveguides includes one or more optical waveguides.

12. The method according to claim 11, characterized in that The method further comprises: When the second group of optical waveguides on the second optical path are controlled to be in the deflected state, at least part of the optical waveguides other than the first target optical waveguide in the first group of optical waveguides on the first optical path are controlled to be in the deflected state, wherein the first target optical waveguide is an optical waveguide included in both the first group of optical waveguides and the second group of optical waveguides, and when the at least part of the optical waveguides other than the first target optical waveguide in the first group of optical waveguides are in the deflected state, the first optical path is in a disconnected state.

13. The method according to claim 11, characterized in that The controlling the second group of optical waveguides on the second optical path to be in a deflected state comprises: In a case where the second group of optical waveguides includes K optical waveguides and K drivers and K resonators are provided in the first optical switching switch unit, the K drivers are controlled to be in a working state, wherein K is a positive integer greater than 1, and when the t-th driver among the K drivers is in the working state, the t-th driver is configured to drive the t-th resonator of the K resonators to make the t-th optical waveguide among the K optical waveguides in the deflection state, and t is a positive integer greater than or equal to 1 and less than or equal to K.

14. The method according to claim 12, characterized in that The controlling at least part of the optical waveguides except the first target optical waveguide in the first group of optical waveguides on the first optical path to be in the deflected state comprises: In a case where the optical waveguides other than the first target optical waveguide in the first group of optical waveguides include T optical waveguides, and the first optical switching switch unit is provided with T drivers and T resonators, Q drivers among the T drivers are controlled to be in an operating state, wherein T is a positive integer greater than or equal to 1, Q is a positive integer greater than or equal to 1 and less than or equal to T, and when the kth driver among the T drivers is in the operating state, the kth driver is configured to drive the kth resonator among the T resonators to make the kth optical waveguide among the T optical waveguides be in the deflection state, and k is a positive integer greater than or equal to 1 and less than or equal to T; Wherein, the at least part of the optical waveguides includes Q optical waveguides among the T optical waveguides, and when one of the Q drivers is in the working state, the one of the Q drivers is configured to drive one of the Q resonators among the T resonators to make one of the Q optical waveguides in the deflection state.

15. The method according to claim 1, characterized in that The method further comprises: When the input port of the second optical switching switch unit receives a third optical signal transmitted via the optical fiber, the third optical signal is output to the first optical receiving component through a third optical path in the second optical switching switch unit, and the third optical signal is converted into a third electrical signal through the first optical receiving component, wherein the first optical receiving component is configured to convert the optical signal into the electrical signal of the first type, and the third electrical signal is the electrical signal of the first type; When the input port of the second optical switching switch unit receives a fourth optical signal transmitted via an optical fiber, the fourth optical signal is output to the second optical receiving component through a fourth optical path in the second optical switching switch unit, and the fourth optical signal is converted into a fourth electrical signal by the second optical receiving component, wherein the second optical receiving component is configured to convert the optical signal into an electrical signal of the second type, and the fourth electrical signal is an electrical signal of the second type.

16. The method according to claim 15, characterized in that The method further comprises: When the input port of the second optical switching switch unit receives a target optical signal transmitted via an optical fiber, the target optical signal is output to the first optical receiving component through the third optical path, and the target optical signal is converted into a target electrical signal through the first optical receiving component; Acquiring a first transmission frequency of the target electrical signal; In the case where the first transmission frequency is less than a preset frequency threshold, determining that the target electrical signal is the second type of electrical signal, and determining the optical signal of the input port of the second optical switching switch unit after the moment of receiving the target optical signal as the third optical signal; In the case where the first transmission frequency is greater than or equal to the preset frequency threshold, the target electrical signal is determined to be the first type of electrical signal, and the optical signal of the input port of the second optical switching switch unit after the moment of receiving the target optical signal is converted to The fourth optical signal is determined.

17. The method according to claim 15, characterized in that The method further includes: when outputting the third optical signal to the first optical receiving component through the third optical path, controlling the fourth optical path to be in a disconnected state.

18. The method according to claim 15, characterized in that The method further includes: when outputting the fourth optical signal to the second optical receiving component through the fourth optical path, controlling the third optical path to be in a disconnected state.

19. The method according to claim 15, characterized in that The step of outputting the third optical signal to the first optical receiving component through the third optical path in the second optical switching switch unit comprises: The third optical path is controlled to be in a conducting state, and the third optical signal is output to the first optical receiving component through the third optical path.

20. The method according to claim 19, characterized in that The controlling the third optical path to be in a conducting state comprises: The third group of optical waveguides on the third optical path is controlled to be in a straight-through state, wherein when the third group of optical waveguides is in the straight-through state, the third optical path is in the conducting state, and the third group of optical waveguides includes one or more optical waveguides.

21. The method according to claim 20, characterized in that The method further comprises: When the third group of optical waveguides on the third optical path is controlled to be in a straight-through state, the optical waveguides other than the second target optical waveguide in the fourth group of optical waveguides on the fourth optical path are controlled to be in a straight-through state, wherein the second target optical waveguide is an optical waveguide included in both the third group of optical waveguides and the fourth group of optical waveguides, and when the fourth group of optical waveguides is in the straight-through state, the fourth optical path is in a disconnected state; or When the third group of optical waveguides on the third optical path is controlled to be in a straight-through state, at least part of the optical waveguides in the fourth group of optical waveguides on the fourth optical path except the second target optical waveguide are controlled to be in a deflected state, wherein when the at least part of the optical waveguides in the fourth group of optical waveguides are in the deflected state, the fourth optical path is in a disconnected state.

22. A signal transmission device, characterized in that: include: a first optical transmission component, configured to, when the first optical transmission component obtains a first electrical signal sent by a first device, convert the first electrical signal into a first optical signal, and input the first optical signal into a first optical switching switch unit, wherein the first optical transmission component is configured to convert a first type of electrical signal into an optical signal, and the first electrical signal is an electrical signal of the first type; a second optical transmission component, configured to convert the second electrical signal sent by the first device into a second optical signal when the second optical transmission component obtains the second electrical signal, and input the second optical signal into the first optical switching switch unit, wherein the second optical transmission component is configured to convert the second type of electrical signal into an optical signal, and the second electrical signal is the second type of electrical signal; The first optical switching switch unit is connected to the first optical transmitting component and the second optical transmitting component respectively, and is configured to output the first optical signal to an output port of the first optical switching switch unit through a first optical path in the first optical switching switch unit when the first optical signal is input to the first optical switching switch unit, wherein the output port is configured to be connected to an optical fiber; and to output the second optical signal to the output port through a second optical path in the first optical switching switch unit when the second optical signal is input to the first optical switching switch unit.

23. The device according to claim 22, characterized in that The device also includes: A controller is connected to the first optical switching switch unit and is configured to control the first optical path to be in an on state and control the second optical path to be in an off state when the first optical signal is input into the first optical switching switch unit; and to control the second optical path to be in the on state and control the first optical path to be in the off state when the second optical signal is input into the first optical switching switch unit.

24. The device according to claim 23, characterized in that The first optical switching switch unit comprises: N drivers and N resonators, wherein the first optical path includes a first group of optical waveguides, the first group of optical waveguides includes N optical waveguides, and N is a positive integer greater than or equal to 1; Wherein, the controller is configured to control the N drivers to be in a working state or in a non-working state. When the i-th driver among the N drivers is in the non-working state, the i-th driver is configured to stop driving the i-th resonator of the N resonators, so that the i-th optical waveguide among the N optical waveguides is in a straight-through state, i is a positive integer greater than or equal to 1 and less than or equal to N, and when the first group of optical waveguides is in the straight-through state, the first optical path is in the conducting state.

25. The device according to claim 23, characterized in that The first optical switching switch unit comprises: M drivers and M resonators, wherein the second optical path includes a second group of optical waveguides, the first optical path includes a first group of optical waveguides, the optical waveguides in the second group of optical waveguides excluding a first target optical waveguide include M optical waveguides, the first target optical waveguide is an optical waveguide included in both the first group of optical waveguides and the second group of optical waveguides, and M is a positive integer greater than or equal to 1; Wherein, the controller is configured to control the M drivers to be in a working state or in a non-working state. When the jth driver among the M drivers is in the working state, the jth driver is configured to drive the jth resonator among the M resonators to make the jth optical waveguide among the M optical waveguides in a deflection state, and j is a positive integer greater than or equal to 1 and less than or equal to M.

26. The device according to claim 23, characterized in that a second optical switching switch unit, connected to the first optical receiving component and the second optical receiving component respectively, and configured to output the third optical signal to the first optical receiving component through a third optical path in the second optical switching switch unit when the input port of the second optical switching switch unit receives a third optical signal transmitted via the optical fiber; When the input port of the second optical switching unit receives a fourth optical signal transmitted via an optical fiber, outputting the fourth optical signal to the second optical receiving component through a fourth optical path in the second optical switching unit; The first optical receiving component is configured to convert the third optical signal into a third electrical signal, wherein the first optical receiving component is configured to convert the optical signal into the electrical signal of the first type, and the third electrical signal is the electrical signal of the first type; The second optical receiving component is configured to convert the fourth optical signal into a fourth electrical signal, wherein the second optical receiving component is configured to convert the optical signal into an electrical signal of the second type, and the fourth electrical signal is an electrical signal of the second type.

27. A computer non-volatile readable storage medium, characterized in that: The computer non-volatile readable storage medium stores a computer program, wherein the computer program implements the method according to any one of claims 1 to 21 when executed by a processor.

28. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the method according to any one of claims 1 to 21 is implemented.

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