CN104101965B - For mixed electrical optical transceiver and the optical cable thereof of USB3.0/3.1 interface - Google Patents

Abstract

A hybrid photoelectric transceiver for USB3.0 interface and its optical cable, the hybrid photoelectric transceiver includes: USB3.0/3.1 electrical transceiver, USB2.0 electrical transceiver and USB data mixer, USB3.0/ 3.1 The electrical transceiver completes the forwarding of USB3.0 signals, and the USB2.0 electrical transceiver completes the forwarding of USB2.0 signals. On the one hand, the USB data mixer mixes the two USB signals, and on the other hand, it mixes the received USB mixed data Unmix, and send two kinds of USB data to two kinds of electrical transceivers respectively. The invention enables usb? 3.0 and USB2.0 can be transmitted in the same data packet, which saves the number of optical fibers and facilitates the operation, making the use of the USB3.0 standard interface easier, making the USB3.0 standard interface truly compatible with USB2.0 in use Format.

Description

Hybrid optical transceiver and its optical cable for USB3.0/3.1 interface

technical field

The invention relates to the field of photoelectric data transmission, in particular to a novel active hybrid photoelectric transceiver and an optical cable for a USB3.0/3.1 interface.

Background technique

USB3.0 is also known as SuperSpeedUSB, which provides a standard interface for various devices connected to PC or audio/high frequency equipment. As a new generation of USB interface, USB3.0/3.1 is characterized by a very fast transmission rate, which can theoretically reach 5Gbps/10Gbps, which is 10 times faster than the current 480Mbps HighSpeedUSB (referred to as USB2.0). The appearance of USB3.0/3.1 is basically the same as the current USB interface, and can be compatible with USB2.0 and USB1.1 devices.

Compared with the current USB2.0 interface, USB3.0/3.1 adds more physical buses in parallel mode. On the basis of the original 4-wire structure (power, ground, and 1 pair of data), USB3.0/3.1 adds 4 (two pairs) lines for receiving and transmitting SuperSpeed signals. Therefore, whether in the cable or on the interface, there are a total of 3 pairs of differential lines, one pair transmits USB2.0 signals in half-duplex mode, and the other two pairs transmit SuperSpeed signals in full-duplex mode.

Using optical fiber to transmit the signal of the USB3.0 interface will encounter two problems:

1. The existing USB3.0 is compatible with the USB2.0 signal, but the signal characteristics of USB3.0 and USB2.0 are different. Therefore, when using the USB3.0 interface for signal transmission, it is necessary to use a pair of optical fibers to transmit USB2. .0 and USB3.0/3.1 specification data. This transmission method will increase the number of photoelectric transceiver devices, increase system power consumption and cost, and is not convenient for users to use.

2. The data of USB2.0 is in half-duplex mode and cannot be directly transmitted through optical fiber. When directly transmitting USB2.0 data, it needs to be converted into a full-duplex signal, while USB3.0 data is in full-duplex mode and can be directly transmitted. to transfer.

Therefore, how to directly transmit the data of the USB3.0/3.1 interface optically, reduce unnecessary optical fibers and optical devices, improve the convenience of use, and at the same time be compatible with the USB2.0 data that may be included has become an urgent problem in the existing technology. technical issues.

Contents of the invention

The purpose of the present invention is to propose a novel USB3.0/3.1 hybrid optical transceiver and an optical cable using the same, which can directly transmit the data of the USB3.0/3.1 interface by using only two optical fibers.

For reaching this purpose, the present invention adopts following technical scheme:

A hybrid optoelectronic transceiver for USB3.0/3.1 interface, characterized in that:

One end of the hybrid photoelectric transceiver is connected to a standard USB3.0/3.1 interface for uploading and downloading USB3.0/3.1 data signals and USB2.0 signals, and the other end is respectively connected to a laser transmitter and a photoelectric detector. The laser transmitter and the photoelectric detector are respectively connected to optical fibers for data transmission;

The hybrid optoelectronic transceiver includes: USB3.0/3.1 electrical transceiver, USB2.0 electrical transceiver and USB data mixer,

Wherein, the USB3.0/3.1 electrical transceiver is connected to the standard USB3.0/3.1 interface, and is used to receive USB3.0/3.1 differential electrical signals for processing and judgment on the one hand, and convert them into single-ended electrical signals for output to The USB data mixer, on the other hand, receives the single-ended electrical signal output by the USB data mixer, and converts it into a USB3.0/3.1 differential signal and outputs it to a standard USB3.0/3.1 data interface;

The USB2.0 electrical transceiver is connected to the standard USB3.0/3.1 interface, and is used to receive a USB2.0 differential electrical signal for processing and judgment on the one hand, and convert it into a single-ended electrical signal and output it to the USB data mixer, On the other hand, receiving the single-ended electrical signal output by the USB data mixer, and converting it into a USB2.0 differential signal and outputting it to a standard USB3.0/3.1 data interface;

The USB data mixer is used to receive signals from the USB3.0/3.1 electrical transceiver and the USB2.0 electrical transceiver on the one hand, and mix the two signals to form a USB3.0/3.1 Mixed data with USB2.0 and sent to the laser transmitter, on the other hand receives the signal from the photodetector, unmixes the received mixed data, and sends USB3.0/3.1 data and USB2.0 data to The USB3.0/3.1 electrical transceiver and the USB2.0 electrical transceiver.

Preferably, the hybrid optical transceiver also includes a USB2.0 half-duplex-full-duplex converter, which connects the USB2.0 electrical transceiver and the USB data mixer for converting the USB2.0 half-duplex The duplex signal is converted to a full duplex signal.

Preferably, the USB data mixer includes:

The hybrid transmitter is used to receive signals from the USB3.0/3.1 electrical transceiver and the USB2.0 half-duplex-full-duplex converter respectively, and mix the two signals to form a USB3.0/3.1 3.1 and USB2.0 mixed data and sent to the laser transmitter;

The mixed receiver is used to receive the signal from the photodetector, unmix the received mixed data including USB3.0/3.1 and USB2.0, and send the USB3.0/3.1 data and USB2.0 data to the The USB3.0/3.1 electrical transceiver and the USB2.0 half-duplex-full-duplex converter.

Preferably, the hybrid transmitter includes:

The USB3.0/3.1 data receiver and cache are used to receive the data sent by the USB3.0/3.1 transceiver and cache it in the cache in a first-in first-out manner;

USB2.0 data receiver and buffer, for receiving the data sent by the USB2.0 electrical transceiver and buffering it in the cache in a first-in first-out manner;

The hybrid controller is used to sequentially read data from the data buffer of the USB3.0/3.1 data receiver and buffer and the data buffer of the USB2.0 data receiver and buffer at the first fixed interval and form a new data packet exists in the sending buffer;

Sending buffers for receiving the new data packets and providing them to the hybrid sender;

The hybrid sender is used to read the new data packet in the sending buffer and send it.

Preferably, the hybrid controller forms a new data packet with the read data in the following format:

data frame header USB 3.0/3.1 data segment mark USB 2.0 data end of data frame

Preferably, the hybrid receiver includes:

The mixed receiving unit is used to receive mixed data and store them in the receiving buffer in order;

receiving buffer, used to store the received mixed data and provide it to the unmixing controller;

The unmixing controller is used to extract the mixed data from the receiving buffer at the second fixed interval and unmix them into USB3.0/3.1 data and USB2.0 data and send them to the USB3.0/3.1 data transmitter and cache and USB2 respectively .0 data receiver and cache;

USB3.0/3.1 data transmitter and buffer, used to buffer the received USB3.0/3.1 data, and send the USB3.0/3.1 data to the USB3.0/3.1 electrical transceiver in a first-in first-out manner;

The USB2.0 data receiver and buffer are used to buffer the received USB2.0 data, and send the USB2.0 data to the USB2.0 transceiver in a first-in first-out manner.

Preferably, the sending timer provides the first fixed interval to the mixing controller, the unmixing controller mainly generates the second fixed interval according to the frame header, segment flag and frame tail, and the receiving timer provides the first fixed interval to the mixing controller. The unmixing controller provides an auxiliary timing signal, so that when the unmixing controller cannot correctly confirm the frame header and the frame trailer, use the auxiliary timing information to assist in generating the frame header and the frame trailer, so as to assist in generating the second fixed interval.

Preferably, the sending timer and the receiving timer are the same timer.

Preferably, the hybrid optoelectronic transceiver also has:

a laser driver for receiving data to be sent and driving the laser transmitter;

The signal detector is used to convert the weak electrical signal converted by the photodetector into a digital signal and send it to the USB data mixer.

At the same time, the present invention also discloses an optical cable system for simultaneous transmission of USB3.0/3.1 and USB2.0 data, including two optical fibers, the hybrid photoelectric transceiver described in any one of the above, standard USB3.0/3.1 Interface, laser emitter and photoelectric detector, it is characterized in that, described standard USB3.0/3.1 interface connects the hybrid optoelectronic transceiver described in any one of claim 1-9, and described hybrid optoelectronic transmitter passes through respectively The laser emitter and the photodetector are connected with an optical fiber.

The present invention unifies the data transmission mode of USB2.0, makes it also become full-duplex mode, and completes the mixing and unmixing of USB3.0/3.1 data and USB2.0 through USB data mixer 23, makes USB3.0/3.1 3.1 and USB2.0 can be transmitted in the same data packet, which saves the number of optical fibers and facilitates the operation, making the use of the USB3.0/3.1 standard interface easier and making the USB3.0/3.1 standard interface truly compatible in use USB2.0 format.

Description of drawings

Fig. 1 is a schematic diagram of optical fiber transmission with a USB3.0/3.1 data interface of a hybrid optoelectronic transceiver according to a specific embodiment of the present invention;

2 is a schematic diagram of bi-directional optical fiber transmission with a hybrid optoelectronic transceiver according to a specific embodiment of the present invention;

3 is a schematic diagram of the framework of a hybrid optoelectronic transceiver according to a specific embodiment of the present invention;

Fig. 4 is the frame diagram of the USB data mixer according to the specific embodiment of the present invention;

Fig. 5 is the frame schematic diagram of the hybrid sender in the mixer of the present invention;

Fig. 6 is a schematic diagram of the frame of the mixing receiver in the mixer of the present invention.

The technical features indicated by the reference numerals in the figure are:

1. Standard USB3.0/3.1 interface; 2. Hybrid optical transceiver; 3. Laser transmitter; 4. Photoelectric detector; 5. Optical fiber; 21. USB3.0/3.1 electrical transceiver; 22. USB2.0 electrical Transceiver; 23, USB data mixer; 24, USB2.0 half-duplex-full duplex converter; 25, laser driver; 26, signal detector; 27, hybrid transmitter; 28, hybrid receiver; 271, USB3.0/3.1 data receiver and buffer; 272, USB2.0 data receiver and buffer; 273, hybrid controller; 274, sending buffer; 275, hybrid transmitter; 276, sending timer; 281, hybrid receiving unit ; 282, receiving buffer; 283, unmixing controller; 284, USB3.0/3.1 data transmitter and buffer; 285, USB2.0 data transmitter and buffer; 286, receiving timer.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

In order to be backward compatible with USB2.0, USB3.0/3.1 adopts 9-pin design. Among them, 4 pins have exactly the same shape definition as USB2.0, while the other 5 pins are specially prepared for USB3.0. USB3.0/3.1 introduces full-duplex data transmission, two of the five lines are used to send data, two are used to receive data, and one is ground, which means that USB3.0/3.1 can synchronize at full speed Read and write operations, while the previous USB versions, namely USB2.0 and USB1.1 did not support full-duplex data transmission.

According to the definition of the standard, see Table 1, the 9 pins of USB3.0/3.1 are defined as follows.

Table 1 USB3.0/3.1 pin definition

In the existing standard, StdA_SSRX+/- and StdA_SSTX+/- are USB3.0/3.1 high-speed data receiving (SuperSpeed) and sending differential pairs, and D- and D+ are USB2.0 signal differential pairs. Among them, SSRX+/- and SSTX+/- are full-duplex signals, and independent physical media are used for transmission and reception; D- and D+ are half-duplex signals, and unified physical media is used for transmission and reception, that is, separate transmission.

USB3.1 is an extension protocol of USB3.0, and is also a high-speed USB data transmission method, so in this paper, the devices and methods used for USB3.0 are applicable to USB3.1.

In the standard protocol, USB3.0/3.1SuperSpeed and USB2.0 use independent media transmission. Therefore, in order to save the number of optical fibers and laser transceiver devices, the present invention mixes the USB3.0/3.1 SuperSpeed signal and the USB2.0 signal and then sends it, so that only one pair of optical fibers can be used to realize the unified USB3.0/3.1 data interface. Transfer of mixed data.

Referring to FIG. 1 , it discloses a schematic diagram of optical fiber transmission of a USB3.0/3.1 data interface with a hybrid optoelectronic transceiver according to a specific embodiment of the present invention. A hybrid optoelectronic transceiver for USB3.0 interface, one end is connected to the standard USB3.0/3.1 interface 1 for uploading and downloading USB3.0/3.1 data signals and USB2.0 signals, and the other end is respectively connected to the laser The transmitter 3 and the photodetector 4, the laser transmitter 3 and the photodetector 4 are respectively connected to the optical fiber 5 for data transmission.

Wherein the laser emitter 3 emits laser light according to digital signals, which can be common laser emitting devices such as LD and LED.

The photodetector 4 is used to detect an optical signal and convert it into an electrical signal. Those skilled in the art should know that the photodiode can be any common photodetection device such as a photodiode.

Apparently, those skilled in the art know that what is shown in FIG. 1 is one end of the optical fiber 5 , and the other end of the optical fiber 5 has the same structure as that in FIG. 1 . That is, referring to FIG. 2 , it discloses a schematic diagram of bidirectional optical fiber transmission with a hybrid optoelectronic transceiver according to a specific embodiment of the present invention. Two ends of a pair of optical cables 5 respectively have two hybrid optoelectronic transceivers 2 to realize USB3.0/ 3.1 and USB2.0 data sending and receiving.

Referring to FIG. 3 , a schematic diagram of the framework of a hybrid optoelectronic transceiver 2 according to a specific embodiment of the present invention is disclosed. The hybrid optoelectronic transceiver 2 includes a USB3.0/3.1 electrical transceiver 21, a USB2.0 electrical transceiver 22 and a USB Data Mixer 23.

Wherein the USB3.0/3.1 electrical transceiver 21 is located at one end facing the standard USB3.0/3.1 interface 1, and is used for receiving USB3.0 differential electrical signals conforming to the USB3.0 electrical specification on the one hand, that is, receiving SSTX, Perform processing and judgment, and convert it into a single-ended electrical signal and output it to the USB data mixer 23. On the other hand, it is responsible for receiving the single-ended electrical signal mixed with the output of the USB data mixer 23, and converting it into a differential signal conforming to the USB3.0 electrical specification The signal is output to the standard USB3.0/3.1 data interface 1. That is, referring to FIG. 3 , the USB3.0/3.1 electrical transceiver 21 is connected to SSRX+/- and SSTX+/-.

The USB2.0 electrical transceiver 22 is located at one end facing the standard USB3.0/3.1 interface 1, and is responsible for parsing and driving the USB2.0 electrical interface for receiving differential electrical signals conforming to the USB2.0 electrical specification. , perform processing and judgment, and convert it into a single-ended electrical signal and output it to the USB data mixer 23, on the other hand receive the single-ended electrical signal output by the USB data mixer, and convert it into a differential signal conforming to the USB2.0 electrical specification Output to standard USB3.0/3.1 data interface 1. That is, referring to FIG. 3 , the USB2.0 electrical transceiver 22 is connected to D+/-.

The USB data mixer 23 is located at one end facing the laser transmitter 3 and the photodetector 4, and is used to receive data from the USB3.0/3.1 electrical transceiver 21 and the USB2.0 electrical transceiver on the one hand. The signal of the transceiver 22 mixes the two signals to form mixed data containing USB3.0/3.1 and USB2.0 and sends it to the laser transmitter 3, and receives the signal from the photodetector 4 on the other hand, and will receive mixed data containing USB3.0/3.1 and USB2.0, and respectively send USB3.0/3.1 data and USB2.0 data to the USB3.0/3.1 electrical transceiver 21 and the USB2.0 electrical transceiver 22.

It can be seen that the present invention adopts two different electrical transceivers to realize the transmission and reception of USB3.0/3.1 and USB2.0 data respectively, and utilizes the USB data mixer 23 to mix the above two different data, therefore, a pair of optical fibers is used It is possible to realize the transmission of signals in two different formats.

Preferably, the hybrid optical transceiver 2 also includes a USB2.0 half-duplex-full-duplex converter 24, which connects the USB2.0 electrical transceiver 22 and the USB data mixer 23, for converting the USB2. 0 half-duplex signal into a full-duplex signal, which makes the signal transmission mode of USB2.0 and USB3.0 unified, which further facilitates the signal of USB2.0 and USB3.0 on the same pair of optical fibers to transfer.

Further, referring to FIG. 4 , in a preferred embodiment, a schematic diagram of the framework of the USB data mixer 23 is disclosed, and the USB data mixer 23 includes: a mixing transmitter 27 for, for example, via USB3.0 The /3.1TX and USB2.0TX lines receive the TX signals from the USB3.0/3.1 transceiver 21 and the USB2.0 half-duplex-full-duplex converter 24 respectively, and mix the two signals, Form the mixed data that includes USB3.0/3.1 and USB2.0 and send to laser transmitter 3; Mix receiver 28, be used for receiving the signal from photodetector 4, will receive and include USB3.0/3.1 and USB2 .0 mixed data unmixing, USB3.0/3.1 data and USB2.0 data are passed, such as through USB3.0/3.1RX and USB2.0RX lines, respectively sent to the USB3.0/3.1 electrical transceiver 21 and the USB2.0 half-duplex-full-duplex converter 24.

Further preferably, the USB2.0 half-duplex-full duplex converter 24 has the following functions: analyze the USB2.0 bus, obtain and maintain the state of the USB2.0 bus; analyze the USB2.0 bus, and receive the USB2.0 host Or the data sent by the device; encode the bus state, mix it with the received data and send it to USB2.0TX; receive the data of USB2.0RX, analyze the bus state information and make corresponding state adjustments; receive the data of USB2.0RX , and send the data to the USB2.0 bus according to the USB2.0 specification.

After the mixed transmitter 27 mixes the received USB3.0/3.1 data and USB2.0 data according to the predetermined format, the data rate is higher (6Gbps/11Gbps is adopted in FIG. 4, but not limited to 6Gbps and 11Gbps) Send to the optical fiber 5, and transmit to the hybrid transceiver at the far end through the optical fiber.

Further, referring to FIG. 5, in a preferred embodiment, a schematic diagram of the framework of the hybrid transmitter 27 is disclosed, and the hybrid transmitter 27 includes: a USB3.0/3.1 data receiver and a buffer 271 for, For example, through USB3.0TX, the data sent by the USB3.0/3.1 transceiver 21 is received and cached in the cache in a first-in-first-out manner; the USB2.0 data receiver and cache 272 are used, for example, through USB2. 0TX, receiving the data sent by the USB2.0 transceiver 22 and buffering it in the cache in a first-in-first-out manner; the hybrid controller 273 is used for receiving data from the USB3.0/3.1 data receiver and the cache 271 at a first fixed interval In the data cache of the USB2.0 data receiver and cache 272, the data is read in order and formed into a new data packet and stored in the transmission cache 274; the transmission cache 274 is used to receive the new data packet and provide it to Hybrid transmitter 275; the hybrid transmitter 275 is used to read the new data packet in the transmission buffer 274 and send it.

In a further preferred embodiment, the following format of the read data forms a new data packet:

data frame header USB 3.0/3.1 data segment mark USB 2.0 data end of data frame

Further preferably, the sending timer 276 provides the mixing controller 273 with the first fixed interval.

The hybrid receiver 28 sends the USB3.0/USB3.1 and USB2.0 data to the local USB3.0 respectively after unmixing the received USB3.0/3.1 and USB2.0 mixed data according to the predetermined format. /3.1 and USB2.0 interface.

Further, referring to FIG. 6 , in a preferred embodiment, a schematic diagram of the framework of the mixed receiver 28 is disclosed, and the mixed receiver 28 includes: a mixed receiving unit 281, which is used to receive mixed data and receive the mixed data in order. In the buffer 282; the receiving buffer 282 is used to store the received mixed data and provides it to the unmixing controller 283; the unmixing controller 283 is used to extract the mixed data from the receiving buffer 282 at a second fixed interval And unmixing USB3.0/3.1 data and USB2.0 data are sent to USB3.0/3.1 data transmitter and cache 284 and USB2.0 data receiver and cache 285 respectively; Described USB3.0/3.1 data transmitter and Cache 284, used to cache the received USB3.0/3.1 data, and send the USB3.0/3.1 data to the USB3.0/3.1 transceiver 21 in a first-in first-out manner; the USB2.0 data receiver And a buffer 285, used for buffering the received USB2.0 data, and sending the USB2.0 data to the USB2.0 transceiver 22 in a first-in first-out manner.

Further preferably, the unmixing controller mainly generates the second fixed interval according to the frame header, the segment flag and the frame trailer. The receiving timer 286 provides an auxiliary timing signal to the demixing controller 283, so that when the demixing controller cannot correctly confirm the frame header and the frame tail, the auxiliary timing information is used to assist in generating the frame header and the frame tail, so as to assist in generating the frame header and the frame trailer. the second fixed interval.

Preferably, the sending timer 276 and the receiving timer 286 may be the same timer.

Further preferably, the hybrid photoelectric transceiver 2 also has a laser driver 25 for receiving the data to be sent and driving the laser transmitter; a signal detector 26 for converting the weak electric signal from the photodetector The signal is converted into a digital signal and sent to the USB data mixer.

The present invention also discloses an optical cable system for simultaneously transmitting USB3.0/3.1 and USB2.0 data, comprising two optical fibers 5, a standard USB3.0/3.1 interface, a laser transmitter and a photoelectric detector, characterized in that , the standard USB3.0/3.1 interface 1 is connected to the hybrid optoelectronic transceiver 2 described in the above embodiments of the present invention, and the hybrid optoelectronic transmitter is connected to the optical fiber 5 through the laser transmitter 3 and the photodetector 4 respectively. That is, use the hybrid optoelectronic transceiver 2 in the present invention to perform mixing and unmixing of USB2.0 and USB3.0/3.1 data.

Therefore, the present invention unifies the data transmission mode of USB2.0, makes it also become full-duplex mode, and completes the mixing and unmixing of USB3.0/3.1 data and USB2.0 through USB data mixer 23, makes USB3. 0/3.1 and USB2.0 can be transmitted in the same data packet, which saves the number of optical fibers and facilitates the operation, making the use of the USB3.0/3.1 standard interface easier, making the use of the USB3.0/3.1 standard interface easier Really compatible with the USB2.0 format.

The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments. It cannot be determined that the specific embodiments of the present invention are limited thereto. Under the present invention, several simple deduction or substitutions can also be made, all of which should be considered as belonging to the protection scope of the present invention determined by the submitted claims.

Claims (10)

1. A hybrid optoelectronic transceiver for USB3.0/3.1 interface, characterized in that: One end of the hybrid photoelectric transceiver is connected to a standard USB3.0/3.1 interface for uploading and downloading USB3.0/3.1 data signals and USB2.0 signals, and the other end is respectively connected to a laser transmitter and a photoelectric detector. The laser transmitter and the photoelectric detector are respectively connected to optical fibers for data transmission; The hybrid optoelectronic transceiver includes: USB3.0/3.1 electrical transceiver, USB2.0 electrical transceiver and USB data mixer, Wherein, the USB3.0/3.1 electrical transceiver is connected to the standard USB3.0/3.1 interface, and is used to receive USB3.0/3.1 differential electrical signals for processing and judgment on the one hand, and convert them into single-ended electrical signals for output to The USB data mixer, on the other hand, receives the single-ended electrical signal output by the USB data mixer, and converts it into a USB3.0/3.1 differential signal and outputs it to a standard USB3.0/3.1 data interface; The USB2.0 electrical transceiver is connected to the standard USB3.0/3.1 interface, and is used to receive a USB2.0 differential electrical signal for processing and judgment on the one hand, and convert it into a single-ended electrical signal and output it to the USB data mixer, On the other hand, receiving the single-ended electrical signal output by the USB data mixer, and converting it into a USB2.0 differential signal and outputting it to a standard USB3.0/3.1 data interface; The USB data mixer is used to receive signals from the USB3.0/3.1 electrical transceiver and the USB2.0 electrical transceiver on the one hand, and mix the two signals to form a USB3.0/3.1 Mixed data with USB2.0 and sent to the laser transmitter, on the other hand receives the signal from the photodetector, unmixes the received mixed data, and sends USB3.0/3.1 data and USB2.0 data to The USB3.0/3.1 electrical transceiver and the USB2.0 electrical transceiver. 2. The hybrid optoelectronic transceiver for USB3.0/3.1 interface according to claim 1, characterized in that: The hybrid optical transceiver also includes a USB2.0 half-duplex-full-duplex converter, which is connected to the USB2.0 electrical transceiver and the USB data mixer for converting the half-duplex signal of USB2.0 For full-duplex signals. 3. The hybrid optoelectronic transceiver for USB3.0/3.1 interface according to claim 2, characterized in that: The USB data mixer includes: The hybrid transmitter is used to receive signals from the USB3.0/3.1 electrical transceiver and the USB2.0 half-duplex-full-duplex converter respectively, and mix the two signals to form a USB3.0/3.1 3.1 and USB2.0 mixed data and sent to the laser transmitter; The mixed receiver is used to receive the signal from the photodetector, unmix the received mixed data including USB3.0/3.1 and USB2.0, and send the USB3.0/3.1 data and USB2.0 data to the The USB3.0/3.1 electrical transceiver and the USB2.0 half-duplex-full-duplex converter. 4. The hybrid optoelectronic transceiver for USB3.0/3.1 interface according to claim 3, characterized in that: The hybrid transmitter includes: The USB3.0/3.1 data receiver and cache are used to receive the data sent by the USB3.0/3.1 transceiver and cache it in the cache in a first-in first-out manner; USB2.0 data receiver and buffer, for receiving the data sent by the USB2.0 electrical transceiver and buffering it in the cache in a first-in first-out manner; The hybrid controller is used to sequentially read data from the data buffer of the USB3.0/3.1 data receiver and buffer and the data buffer of the USB2.0 data receiver and buffer at the first fixed interval and form a new data packet exists in the sending buffer; Sending buffers for receiving the new data packets and providing them to the hybrid sender; The hybrid sender is used to read the new data packet in the sending buffer and send it. 5. The hybrid optoelectronic transceiver for USB3.0/3.1 interface according to claim 4, characterized in that: The hybrid controller forms a new data packet with the read data in the following format: data frame header USB 3.0/3.1 data segment mark USB 2.0 data end of data frame . 6. The hybrid optoelectronic transceiver for USB3.0/3.1 interface according to claim 4 or 5, characterized in that: The hybrid receiver includes: The mixed receiving unit is used to receive mixed data and store them in the receiving buffer in order; receiving buffer, used to store the received mixed data and provide it to the unmixing controller; The unmixing controller is used to extract the mixed data from the receiving buffer at the second fixed interval and unmix them into USB3.0/3.1 data and USB2.0 data and send them to the USB3.0/3.1 data transmitter and cache and USB2 respectively .0 data receiver and cache; USB3.0/3.1 data transmitter and buffer, used to buffer the received USB3.0/3.1 data, and send the USB3.0/3.1 data to the USB3.0/3.1 electrical transceiver in a first-in first-out manner; The USB2.0 data receiver and buffer are used to buffer the received USB2.0 data, and send the USB2.0 data to the USB2.0 transceiver in a first-in first-out manner. 7. The hybrid optoelectronic transceiver for USB3.0/3.1 interface according to claim 6, characterized in that: The sending timer provides the first fixed interval to the mixing controller, the demixing controller mainly generates the second fixed interval according to the frame header, the segmentation flag and the frame tail, and the receiving timer provides the demixing controller with The controller provides an auxiliary timing signal, so that when the unmixing controller cannot correctly confirm the frame header and the frame trailer, use the auxiliary timing information to assist in generating the frame header and the frame trailer, so as to assist in generating the second fixed interval. 8. The hybrid optoelectronic transceiver for USB3.0/3.1 interface according to claim 7, characterized in that: The sending timer and the receiving timer are the same timer. 9. The hybrid optoelectronic transceiver for USB3.0/3.1 interface according to claim 6, characterized in that: The hybrid optoelectronic transceiver also has: a laser driver for receiving data to be sent and driving the laser transmitter; The signal detector is used to convert the weak electrical signal converted by the photodetector into a digital signal and send it to the USB data mixer. 10. An optical cable system for simultaneous transmission of USB3.0/3.1 and USB2.0 data, comprising two optical fibers, the hybrid optoelectronic transceiver according to any one of claims 1-9, standard USB3.0/3.1 interface, laser emitter and photodetector, It is characterized in that, the standard USB3.0/3.1 interface is connected to the hybrid optoelectronic transceiver according to any one of claims 1-9, and the hybrid optoelectronic transmitter passes through the laser transmitter and the photoelectric detector respectively connected to the fiber.