Optical communication circuit device, vehicle-mounted optical communication system, method, equipment and vehicle

Abstract

The invention discloses an optical communication circuit device, a vehicle-mounted optical communication system, method and equipment and a vehicle, and belongs to the technical field of optical network communication. The vehicle-mounted optical communication system comprises a first optical communication device, N second optical communication devices and an optical transmission channel, the first optical communication device is connected with the optical transmission channel, and the N second optical communication devices are all connected with the optical transmission channel; the first optical communication device is used for sending M first optical carriers with different wavelengths to the optical transmission channel, and each first optical carrier in the M first optical carriers corresponds to at least one second optical communication device in the N second optical communication devices. The second optical communication device i in the N second optical communication devices is used for receiving a first optical carrier i matched with the second optical communication device i from the optical transmission channel, generating a first optical signal i through modulation according to the first optical carrier i and sending the first optical signal i to the optical transmission channel, N and M are positive integers larger than or equal to 1, and M is smaller than or equal to N. On the basis of optical transmission, the communication rate is high, and the communication quality is good.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of vehicle-mounted communication, and particularly relates to an optical communication circuit device, a vehicle-mounted optical communication system, a method, an equipment and a vehicle. BACKGROUND

[0002] With the development of automobile electrification, intelligentization and networking, and the improvement of the level of auxiliary driving, higher requirements are put forward for the bandwidth of vehicle-mounted communication. In order to meet the bandwidth requirements of vehicle-mounted communication, related technologies use optical fibers to replace twisted pairs as transmission media, but for vehicle-mounted optical communication, the optical transmitting module in optical communication is difficult to meet the temperature (105℃) specifications of vehicle-mounted communication, mainly for two aspects: first, the optical transmitting module is a semiconductor laser, and the optical power of the optical transmitting laser attenuates at high temperature, resulting in poor communication quality; second, high temperature also affects the service life of the optical transmitting laser, making it difficult to meet the vehicle-mounted communication scenario. Therefore, how to realize vehicle-mounted optical communication while meeting the bandwidth requirements of vehicle-mounted communication and reducing the impact of the vehicle-mounted environment on the optical communication equipment is a problem to be solved. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides an optical communication circuit device, a vehicle-mounted optical communication system, a method, an equipment and a vehicle, which realizes vehicle-mounted optical communication, reduces the impact of the vehicle-mounted environment on the optical communication equipment while meeting the bandwidth requirements of vehicle-mounted communication.

[0004] In a first aspect, the present application provides an optical communication circuit device, which integrates an optical communication module and a functional module, the optical communication module is used to realize optical communication between the functional module and other devices, and the function realized by the functional module is different from the function of the optical communication module.

[0005] In the above technical solution, the optical communication circuit device includes an optical communication module and a functional module, which can be integrated on the functional module or integrated on the optical communication module, can realize optical communication between the functional module and other devices, and is suitable for vehicle-mounted communication application scenarios.

[0006] According to an embodiment of the present application, the optical communication module includes a silicon optical chip and an electric chip, the silicon optical chip is used to receive a downlink signal and modulate an uplink signal;

[0007] The electric chip is used to realize transmission control of the uplink and downlink signals.

[0008] According to an embodiment of the present application, the silicon optical chip includes: an optical modulation unit, configured to modulate a first optical carrier received from an optical transmission channel to obtain a first optical signal; or,

[0009] The silicon optical chip comprises the optical modulation unit and an optical receiving unit, the optical receiving unit is used for receiving a second optical signal, photoelectrically converting the second optical signal to obtain a second electrical signal, and the second optical signal carries downlink data.

[0010] In the above technical solution, the optical communication circuit device does not contain an optical transmitting device, which can reduce the influence of the vehicle-mounted environment on the optical communication circuit device while meeting the bandwidth requirement of vehicle-mounted communication.

[0011] According to an embodiment of the present application, the silicon optical chip further comprises an optical switch, the optical switch is used for being connected to the first end in the case that the functional module transmits uplink data, and being connected to the second end in the case that the functional module does not transmit uplink data, the first end is connected with the optical modulation unit, and the second end is connected with the optical switch of the next optical communication circuit device.

[0012] In the above technical solution, the optical switch can reduce the loss caused by the optical signal passing through the silicon optical chip, and improve the communication quality.

[0013] According to an embodiment of the present application, the silicon optical chip comprises:

[0014] a first optical transmitting unit and an optical receiving unit, the first optical transmitting unit is used for transmitting a first optical carrier to an optical transmission channel, the optical receiving unit is used for receiving a first optical signal from the optical transmission channel, the first optical signal carries uplink data, and the first optical signal is obtained by modulating the first optical carrier; and / or

[0015] The silicon optical chip comprises a second optical transmitting unit, the second optical transmitting unit is used for transmitting a second optical carrier to an optical transmission channel, and the second optical carrier carries downlink data.

[0016] In the above technical solution, the silicon optical chip contains an optical transmitting device, which can realize optical communication between the functional module and other modules.

[0017] According to an embodiment of the present application, the optical receiving unit comprises one of the following:

[0018] a silicon-based silicon germanium process PIN / APD;

[0019] a III-V semiconductor-based PIN / APD;

[0020] The optical modulation unit comprises one of the following:

[0021] a silicon-based optical modulation unit;

[0022] a lithium niobate-based optical modulation unit;

[0023] The optical switch comprises one of:

[0024] a thermal modulation optical switch;

[0025] an electrical modulation optical switch.

[0026] According to one embodiment of the present application, the electrical chip comprises: an optical signal driving module, a processing module and a MAC-PHY chip,

[0027] The optical signal driving module is configured to output a driving signal for controlling signal modulation and photoelectric conversion in the silicon optical chip.

[0028] The processing module is configured to implement digital signal processing.

[0029] The MAC-PHY chip is configured to implement data link layer and physical layer protocol processing.

[0030] According to one embodiment of the present application, the optical communication module and the functional module are integrated on the same board card; and / or the optical communication circuit device is a circuit board or an integrated circuit.

[0031] In a second aspect, the present application provides a vehicle-mounted optical communication system, comprising: a first optical communication device, N second optical communication devices and an optical transmission channel,

[0032] The first optical communication device is connected with the optical transmission channel, and the N second optical communication devices are connected with the optical transmission channel.

[0033] The first optical communication device is configured to send M first optical carriers with different wavelengths to the optical transmission channel, each of the M first optical carriers corresponds to at least one of the N second optical communication devices, a second optical communication device i in the N second optical communication devices is configured to receive a first optical carrier i matched with the second optical communication device i from the optical transmission channel, generate a first optical signal i according to the first optical carrier i, and send the first optical signal i to the optical transmission channel, N and M are positive integers greater than or equal to 1, and M is less than or equal to N.

[0034] In the technical solution, the first optical communication device is connected with the N second optical communication devices through the optical transmission channel, the first optical communication device can emit M first optical carriers with different wavelengths, and the second optical communication device i of the N second optical communication devices receives the first optical carrier i matched with the second optical communication device i from the optical transmission channel, modulates the first optical carrier i to generate a first optical signal i, and realizes signal transmission from the second optical communication device to the first optical communication device. On the one hand, the vehicle-mounted optical communication system is based on optical transmission, can use high-speed data flow formed by optical carriers to meet high-bandwidth communication requirements, has high communication rate, strong anti-electromagnetic environmental interference ability, and good communication quality. On the other hand, the first optical communication device provides a light source for uplink signals, so that each second optical communication device does not need to be provided with a light source, and thus the high-temperature environment of the vehicle-mounted optical communication system does not affect the normal work of the second optical communication device, thereby ensuring the applicability and practicability of the vehicle-mounted optical communication system in a vehicle-mounted communication scene.

[0035] According to an embodiment of the present application, among the N second optical communication devices, at least two second optical communication devices receive the first optical carrier with the same wavelength.

[0036] According to an embodiment of the present application, the first optical communication device is further configured to receive the first optical signal i from the optical transmission channel and convert the first optical signal i into a first electrical signal i.

[0037] According to an embodiment of the present application, the first optical communication device comprises an optical emission module and a first optical receiving unit, the optical emission module is configured to emit the first optical carrier, and the first optical receiving unit is configured to receive the first optical signal i from the optical transmission channel.

[0038] According to an embodiment of the present application, the optical emission module comprises M first optical emission units, the M first optical emission units are configured to send the M first optical carriers to the optical transmission channel, and the M first optical carriers comprise the first optical carrier i.

[0039] In the technical solution, the first optical communication device provides a light source for uplink signals through the optical emission module, realizes optical communication, has high communication rate, each second optical communication device does not need to be provided with a light source, and the high-temperature environment of the vehicle-mounted optical communication system does not affect the normal work of the second optical communication device, thereby ensuring the applicability and practicability of the vehicle-mounted optical communication system in a vehicle-mounted communication scene.

[0040] According to an embodiment of the present application, the first optical communication device further comprises a demultiplexer, an input end of the demultiplexer is connected with the optical transmission channel, an output end of the demultiplexer is connected with the first optical receiving unit, and the demultiplexer is configured to separate the first optical signals with different wavelengths.

[0041] According to one embodiment of the present application, the optical transmitting module further comprises a second optical transmitting unit, the second optical transmitting unit comprises a first light source, the first light source is used for transmitting a second optical carrier; the second optical transmitting unit further comprises a second optical modulation unit, the second optical modulation unit is used for modulating the second optical carrier to obtain a second optical signal, and the second optical signal is sent to the optical transmission channel, and the second optical signal carries downlink data.

[0042] In the above technical solution, the first optical communication device provides a light source for downlink signals through the optical transmitting module, optical communication is realized, the communication rate is high, and each second optical communication device does not need to be provided with a light source, so that the high-temperature environment on the vehicle does not affect the normal work of the second optical communication device, and the applicability and practicability of the vehicle-mounted optical communication system in the vehicle-mounted communication scene are ensured.

[0043] According to one embodiment of the present application, the first optical communication device is the optical communication circuit device of the first aspect.

[0044] According to one embodiment of the present application, the second optical communication device i comprises a silicon optical chip, the silicon optical chip is used for modulating the first optical carrier i to obtain the first optical signal i, and the first optical signal carries uplink data.

[0045] According to one embodiment of the present application, the silicon optical chip comprises:

[0046] An electro-optical modulator is used for modulating the first optical carrier i to obtain the first optical signal i.

[0047] An optical switch is used for turning on or turning off the optical transmission channel and the electro-optical modulator.

[0048] According to one embodiment of the present application, the silicon optical chip further comprises:

[0049] An optical receiver is used for receiving a second optical signal from the optical transmission channel, and the second optical signal carries downlink data.

[0050] According to one embodiment of the present application, the second optical communication device is the optical communication circuit device of the first aspect.

[0051] According to one embodiment of the present application, the electronic chip comprises an optical-electrical signal driving module, a processing module and a MAC-PHY chip,

[0052] The optical-electrical signal driving module is used for outputting a driving signal for controlling signal modulation and optical-electrical conversion in the silicon optical chip.

[0053] The processing module is used for realizing digital signal processing.

[0054] The MAC-PHY chip is used to implement data link layer and physical layer protocol processing.

[0055] According to an embodiment of the present application, the processing module is further configured to, in the case that the functional module is detected to send uplink data to the first optical communication device, control the optical switch in the silicon optical chip to be turned on to the first end, so as to transmit the first optical carrier to the electro-optical modulator in the silicon optical chip, and the optoelectronic signal driving module is configured to output a first driving signal to drive the electro-optical modulator in the silicon optical chip to operate;

[0056] In the case that the functional module is not detected to send uplink data to the first optical communication device, the processing module is configured to control the optical switch in the silicon optical chip to be turned on to the second end, so as to make the first optical carrier not pass through modulation and be transmitted to a next second optical communication device through the optical transmission channel, and the optoelectronic signal driving module is configured to output a second driving signal to control the electro-optical modulator in the silicon optical chip to stop operating.

[0057] According to an embodiment of the present application, the processing module is further configured to determine whether to respond to the second electrical signal based on the identification information in the converted second electrical signal of the second optical signal.

[0058] According to an embodiment of the present application, the second optical communication device i in the N second optical communication devices further comprises a filter, and the filter is configured to obtain a first optical carrier i matched with the second optical communication device i from the M first optical carriers and transmit the first optical carrier i to the electro-optical modulator.

[0059] According to an embodiment of the present application, the optical transmission channel comprises M optical channels, and each optical channel is configured to transmit one optical carrier in the M first optical carriers.

[0060] According to an embodiment of the present application, the optical transmission channel comprises K optical channels, and each optical channel is configured to transmit at least one optical carrier in the M first optical carriers, and K is a positive integer, and K is less than M.

[0061] In a third aspect, the present application provides a vehicle-mounted optical communication method, comprising:

[0062] The first optical communication device generates M first optical carriers, and the M first optical carriers have different wavelengths.

[0063] The first optical communication device sends the M first optical carriers to N second optical communication devices through an optical transmission channel, each of the M first optical carriers corresponds to at least one of the N second optical communication devices, and the i-th first optical carrier of the M first optical carriers is used to modulate the corresponding second optical communication device i to generate a first optical signal i, and the second optical communication device i is any one of the N second optical communication devices.

[0064] According to an embodiment of the present application, the j-th first optical carrier of the M first optical carriers is used to modulate the corresponding second optical communication device j1 to generate a first optical signal j1, and is used to modulate the second optical communication device j2 to generate a first optical signal j1.

[0065] According to an embodiment of the present application, the method further comprises:

[0066] The first optical communication device receives the first optical signal i from the optical transmission channel.

[0067] According to an embodiment of the present application, the first optical communication device comprises an optical emission module and a first optical receiving unit, the optical emission module is used to emit the first optical carrier, and the first optical receiving unit is used to receive the first optical signal i from the optical transmission channel.

[0068] According to an embodiment of the present application, the optical emission module comprises M first optical emission units, the M first optical emission units are used to send the M first optical carriers to the optical transmission channel, and the M first optical carriers comprise the i-th first optical carrier.

[0069] According to an embodiment of the present application, the first optical communication device further comprises a demultiplexer, an input end of the demultiplexer is connected to the optical transmission channel, and an output end of the demultiplexer is connected to the first optical receiving unit, and the demultiplexer is used to separate first optical signals of different wavelengths.

[0070] According to an embodiment of the present application, the optical emission module further comprises a second optical emission unit, the second optical emission unit comprises a first light source, and the first light source is used to emit a second optical carrier; the second optical emission unit further comprises a second optical modulation unit, the second optical modulation unit is used to modulate the second optical carrier to obtain a second optical signal, and the second optical signal is sent to the optical transmission channel, and the second optical signal carries downlink data.

[0071] According to an embodiment of the present application, the first optical communication device is the optical communication circuit device of the first aspect.

[0072] According to an embodiment of the present application, the optical transmission channel comprises M optical channels, each of the optical channels being configured to transmit one of the M first optical carriers.

[0073] According to an embodiment of the present application, the optical transmission channel comprises K optical channels, each of the optical channels being configured to transmit at least one of the M first optical carriers, K being a positive integer, K being less than M.

[0074] In a fourth aspect, the present application provides a vehicle-mounted optical communication method, comprising:

[0075] The second optical communication device i receives, from the optical transmission channel, a first optical carrier i matching the second optical communication device;

[0076] The second optical communication device i sends, to the optical transmission channel, a first optical signal i, the first optical signal being obtained by modulating the first optical carrier i, and the first optical signal carrying uplink data.

[0077] The optical transmission channel transmits M first optical carriers, the M first optical carriers having different wavelengths, and the M first optical carriers being configured to be received by N second optical communication devices, the second optical communication device i being any one of the N second optical communication devices.

[0078] According to an embodiment of the present application, the second optical communication device i comprises a silicon optical chip, the silicon optical chip being configured to modulate the first optical carrier i to obtain the first optical signal i, and the first optical signal i carrying uplink data.

[0079] According to an embodiment of the present application, the silicon optical chip comprises:

[0080] An electro-optical modulator configured to modulate the first optical carrier i to obtain the first optical signal i.

[0081] An optical switch configured to turn on or turn off the optical transmission channel and the electro-optical modulator.

[0082] According to an embodiment of the present application, the silicon optical chip further comprises:

[0083] An optical receiver configured to receive, from the optical transmission channel, a second optical signal, the second optical signal carrying downlink data.

[0084] According to an embodiment of the present application, the second optical communication device is the optical communication circuit device of the first aspect.

[0085] According to an embodiment of the present application, the electronic chip comprises an optical-electrical signal driving module, a processing module, and a MAC-PHY chip,

[0086] The optoelectrical signal driving module is configured to output a driving signal for controlling signal modulation and photoelectric conversion in the silicon optical chip.

[0087] The processing module is configured to implement digital signal processing.

[0088] The MAC-PHY chip is configured to implement data link layer and physical layer protocol processing.

[0089] According to an embodiment of the present application, the processing module is further configured to, in the case where it is detected that the functional module transmits uplink data to the first optical communication device, control the optical switch in the silicon optical chip to be turned on to the first end, so as to transmit the first optical carrier to the electro-optical modulator in the silicon optical chip, and the optoelectrical signal driving module is configured to output a first driving signal to drive the electro-optical modulator in the silicon optical chip to operate.

[0090] In the case where it is not detected that the functional module transmits uplink data to the first optical communication device, the processing module is configured to control the optical switch in the silicon optical chip to be turned on to the second end, so as to make the first optical carrier not pass through modulation and be transmitted to a next second optical communication device through the optical transmission channel, and the optoelectrical signal driving module is configured to output a second driving signal to control the electro-optical modulator in the silicon optical chip to stop operating.

[0091] According to an embodiment of the present application, the processing module is further configured to determine whether to respond to the second electrical signal based on identification information in the converted second electrical signal.

[0092] According to an embodiment of the present application, a second optical communication device i in the N second optical communication devices further comprises a filter, which is configured to obtain a first optical carrier i matched with the second optical communication device i from the M first optical carriers and transmit the first optical carrier i to the electro-optical modulator.

[0093] According to an embodiment of the present application, the optical transmission channel comprises M optical channels, and each optical channel is configured to transmit one optical carrier in the M first optical carriers.

[0094] According to an embodiment of the present application, the optical transmission channel comprises K optical channels, and each optical channel is configured to transmit at least one optical carrier in the M first optical carriers, K is a positive integer, and K is less than M.

[0095] In a fifth aspect, the present application provides an optical communication device, comprising a processor and a memory connected with the processor, wherein the memory stores a computer program, and the processor implements the vehicle-mounted optical communication method according to the third aspect when executing the program.

[0096] In a sixth aspect, the present application provides an optical communication device, comprising a processor connected with a memory, wherein the memory stores a computer program, and the processor executes the program to implement the vehicle-mounted optical communication method in the fourth aspect.

[0097] In a seventh aspect, the present application provides an optical communication system, comprising the optical communication device in the fifth aspect and the optical communication device in the sixth aspect.

[0098] In an eighth aspect, the present application provides a vehicle, comprising the optical communication circuit device in the first aspect, or comprising the vehicle-mounted optical communication system in the second aspect, or comprising the optical communication device in the fifth aspect or the sixth aspect, or comprising the optical communication system in the seventh aspect.

[0099] In a ninth aspect, the present application provides a non-transitory computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to implement the vehicle-mounted optical communication method in the third aspect or the vehicle-mounted optical communication method in the fourth aspect.

[0100] In a tenth aspect, the present application provides a chip, comprising a processor and a communication interface, wherein the communication interface is coupled with the processor, and the processor is used to run a program or an instruction to implement the vehicle-mounted optical communication method in the third aspect or the vehicle-mounted optical communication method in the fourth aspect.

[0101] In an eleventh aspect, the present application provides a computer program product, comprising a computer program, and the computer program is executed by a processor to implement the vehicle-mounted optical communication method in the third aspect or the vehicle-mounted optical communication method in the fourth aspect.

[0102] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0103] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the appended drawings.

[0104] Figure 1 Structure schematic diagram of the optical communication circuit device provided by the embodiment of the present application;

[0105] Figure 2 Structure schematic diagram of the silicon optical chip provided by the embodiment of the present application;

[0106] Figure 3 Structure schematic diagram of the silicon optical chip provided by the embodiment of the present application;

[0107] Figure 4 A structure schematic diagram of an optical communication circuit device provided by an embodiment of the present application is shown in FIG. 10.

[0108] Figure 5 A structure schematic diagram of an optical communication system provided by an embodiment of the present application is shown in FIG. 20.

[0109] Figure 6 A signal transmission schematic diagram in an optical communication system provided by an embodiment of the present application is shown in FIG. 30.

[0110] Figure 7 A flowchart of an optical communication method provided by an embodiment of the present application is shown in FIG. 40.

[0111] Figure 8 A flowchart of an optical communication method provided by an embodiment of the present application is shown in FIG. 50.

[0112] Figure 9 A structure schematic diagram of a first optical communication device provided by an embodiment of the present application is shown in FIG. 60.

[0113] Figure 10 A structure schematic diagram of a second optical communication device provided by an embodiment of the present application is shown in FIG. 70.

[0114] Figure 11 A structure schematic diagram of an optical communication system provided by an embodiment of the present application is shown in FIG. 80.

[0115] Explanation of reference signs:

[0116] 10: optical communication circuit device; 101: optical communication module; 102: function module;

[0117] 20: silicon optical chip; 201: optical receiving unit; 202: optical modulation unit;

[0118] 203: optical opening; 301: first optical transmitting unit; 302: second optical transmitting unit;

[0119] 30: electronic chip; 401: processing module; 402: optoelectronic signal driving module;

[0120] 403: MAC-PHY chip; 50: vehicle-mounted optical communication system; 501: first optical communication device;

[0121] 502: second optical communication device; 503: optical transmission channel; 601: optical splitter;

[0122] 602: optical demultiplexer; 1100: optical communication system; 901: processor;

[0123] 902: memory. DETAILED DESCRIPTION

[0124] With reference to the drawings and embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly described. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art are within the scope of protection of the present application.

[0125] The terms "first", "second", and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally a category and do not limit the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / ", generally indicates that the objects before and after are in a "or" relationship.

[0126] The optical communication circuit device, vehicle-mounted optical communication system, method, equipment and vehicle provided by the embodiments of the present application will be described in detail below in combination with the drawings and specific embodiments and application scenarios.

[0127] Figure 1 The structure diagram of the optical communication circuit device provided by the embodiments of the present application is shown in FIG. 1. As shown in the figure, the optical communication circuit device 10 is integrated with an optical communication module 101 and a functional module 102. The optical communication module is used to realize optical communication between the functional module and other devices. The function realized by the functional module is different from the function of the optical communication module. It can be understood that the optical communication circuit device realizes optical communication between the functional module and other devices through the optical communication module. Figure 1

[0128] Optionally, the functional module 102 can be a sensor, an actuator, a control unit, a terminal device, a server, etc. on the vehicle, and the type of the functional module is not limited in the present application. The sensor can be a camera, a millimeter wave radar, a laser radar, an ultrasonic radar, etc. The actuator can be an electric motor, a clutch valve, a valve mechanism, an electromagnetic valve, etc. The functional module can also be a controller of the vehicle, such as a central controller or a domain controller.

[0129] The functional module 102 realizes optical communication with other devices through the optical communication module 101.

[0130] Optionally, the other device can be another optical communication circuit device, another functional module, another optical communication device, etc., and the present application does not make any limitation thereon.

[0131] ​In the embodiment of the present application, the optical communication circuit device comprises an optical communication module and a functional module, which can be integrated on the functional module or integrated on the optical communication module, so that the functional module can communicate with other devices through optical communication, with high communication rate, strong anti-electromagnetic environmental interference ability and good communication quality.

[0132] In the present application, the optical communication circuit device can be an integrated circuit or a circuit board or a chip.

[0133] It can be understood that in the present application, the optical communication module is integrated into the electric control module of the functional device as a whole. For example, the optical communication module can be integrated into a circuit board or a chip together with the electric control module of the sensor, the actuator, the controller and other functional devices.

[0134] Optionally, the optical communication module 101 comprises a silicon optical chip and an electric chip, the silicon optical chip is used for modulating and / or transceiving optical signals, and the electric chip is used for realizing transmission control of the optical signals.

[0135] In an embodiment, the silicon optical chip receives a downlink signal and modulates an uplink signal.

[0136] It should be noted that the downlink signal refers to an optical signal sent by other devices to the functional module, the silicon optical chip receives the downlink signal, performs photoelectric conversion on the downlink signal to obtain an electric signal, and sends the electric signal to the functional module, and the functional module processes the electric signal.

[0137] The uplink signal refers to an optical signal sent by the functional module to other devices, and the silicon optical chip modulates an optical carrier based on uplink data sent by the functional module to obtain the uplink signal.

[0138] It should be noted that the uplink in the embodiment of the present application refers to the direction of a link, and the downlink refers to the opposite direction of the uplink. The uplink can also generally refer to the direction of a link, and the downlink can also correspondingly generally refer to the direction of another link.

[0139] In an embodiment, the silicon optical chip sends an optical signal to provide an optical source for uplink data of the functional module.

[0140] Optionally, the electric chip is used for realizing transmission control of the optical signals, including control of signal modulation and photoelectric conversion.

[0141] In the embodiment of the present application, the silicon optical chip is used for modulating and / or transceiving optical signals, and the electric chip is used for realizing transmission control of the optical signals. The silicon optical chip and the electric chip cooperate with each other to realize optical communication.

[0142] In some embodiments, the silicon optical chip comprises:

[0143] The light modulation unit is configured to modulate the first optical carrier received from the optical transmission channel to obtain a first optical signal, and the first optical signal carries uplink data sent by the functional module to other devices.

[0144] In some embodiments, the silicon optical chip comprises a light modulation unit and a light receiving unit,

[0145] The light modulation unit is configured to modulate the first optical carrier received from the optical transmission channel to obtain a first optical signal.

[0146] The light receiving unit is configured to receive a second optical signal, perform photoelectric conversion on the second optical signal to obtain a second electrical signal, and the second optical signal carries downlink data.

[0147] It can be understood that the second optical signal carries downlink data sent by other devices to the functional module, the silicon optical chip receives the second optical signal through the light receiving unit, performs photoelectric conversion on the second optical signal to obtain the second electrical signal, and the functional module can further process the second electrical signal, thereby realizing downlink data transmission between other devices and the functional module.

[0148] Optionally, the light receiving unit and the light modulation unit can be discrete or integrated.

[0149] Optionally, the light receiving unit can be a silicon germanium process photodiode (PIN) / avalanche photodiode detector (APD) based on a silicon substrate, or a PIN / APD based on III-V semiconductor.

[0150] Optionally, the light modulation unit can be a light modulation unit based on a silicon substrate, or a lithium niobate-based light modulation unit.

[0151] In the embodiments of the present application, the silicon optical chip comprises a light modulation unit or a light modulation unit and a light receiving unit, and can realize reception and modulation of optical signals. Through silicon optical technology, the reliability of optical communication can be improved.

[0152] Optionally, the silicon optical chip further comprises a light switch configured to turn on or turn off the optical transmission channel and the light modulation unit.

[0153] Figure 2 A structure diagram of the silicon optical chip provided in the embodiments of the present application is shown in FIG. 1. Figure 2As shown, the silicon optical chip 20 includes: an optical receiving unit 201, an optical modulation unit 202, and an optical switch 203. The optical switch 203 can be connected to a first end ① or a second end ②. The first end is connected to the optical modulation unit 203, and the second end is connected to an optical switch of a next optical communication circuit device. It can be understood that the second end is connected to an optical transmission channel, and the second end is connected to the optical switch of the next optical communication circuit device through the optical transmission channel.

[0154] In a case where the functional module transmits uplink data, the first end of the optical switch is connected to the optical modulation unit 202. When the optical switch is connected to the first end, the optical carrier can reach the optical modulation unit 202. The optical carrier is modulated based on the uplink data of the current optical communication circuit device, to obtain an uplink signal, so that the transmission of the uplink signal can be realized.

[0155] In a case where the functional module does not transmit uplink data, the optical switch is connected to the second end, so that the optical carrier reaching the silicon optical chip is directly transmitted to the optical transmission channel without modulation. Alternatively, the optical switch of another optical communication circuit device is connected to the second end, so that the uplink signal from the current optical communication circuit device is directly transmitted through the silicon optical waveguide without modulation of the other optical communication circuit device.

[0156] Alternatively, the switching time of the optical switch is less than 10 us.

[0157] Alternatively, the optical switch includes one of the following:

[0158] a thermal modulation optical switch;

[0159] an electrical modulation optical switch.

[0160] It should be noted that a plurality of optical communication circuit devices can form a ring optical network. The power budget of the entire ring optical network is limited, and thus the number of optical communication circuit devices is limited. The purpose of the arrangement of the optical switch in each silicon optical chip is mainly to avoid that the optical signal that does not need to be modulated is modulated by the optical modulation unit, causing a large loss. Through the arrangement of the optical switch, the optical signal that does not need to be modulated is transmitted to the next optical communication circuit device through the silicon optical waveguide, so as to reduce the loss caused by the silicon optical chip. In the embodiment of the present application, the silicon optical chip includes an optical switch. Through the arrangement of the optical switch, the optical signal that needs to be modulated can enter the optical modulation unit, and the optical signal that does not need to be modulated can not pass through the optical modulation unit, so as to reduce the loss caused by the silicon optical chip.

[0161] In some embodiments, the silicon optical chip includes:

[0162] The first light transmitting unit is configured to send a first light carrier to the optical transmission channel, and the light receiving unit is configured to receive a first optical signal from the optical transmission channel, the first optical signal carrying uplink data, and the first optical signal being obtained by modulating the first light carrier.

[0163] The silicon optical chip comprises a second light transmitting unit configured to transmit a second light carrier to the optical transmission channel, and the second light carrier carrying downlink data.

[0164] In an embodiment, the silicon optical chip provides a light source for uplink data, and the silicon optical chip comprises a first light transmitting unit and a light receiving unit. The first light transmitting unit is configured to send a first light carrier to the optical transmission channel, and a functional module can obtain the first light carrier from the optical transmission channel. The first light carrier is modulated based on uplink data to obtain a first optical signal. The light receiving unit is configured to receive the first optical signal from the optical transmission channel, and the first optical signal carries uplink data.

[0165] In an embodiment, the silicon optical chip provides a light source for downlink data, and the silicon optical chip comprises a second light transmitting unit configured to transmit a second optical signal to the optical transmission channel, and the second optical signal carrying downlink data. It can be understood that the second light transmitting unit transmits a second light carrier, and the second light carrier is modulated based on downlink data to obtain the second optical signal, and the second optical signal is transmitted to the optical transmission channel.

[0166] In an embodiment, the silicon optical chip provides a light source for uplink and downlink data, i.e., the silicon optical chip comprises a first light transmitting unit, a light receiving unit, and a second light transmitting unit. Figure 3 A second structure diagram of a silicon optical chip is provided in the embodiment of the present application. Referring to Figure 3 The silicon optical chip 20 comprises a first light transmitting unit 301, a light receiving unit 201, and a second light transmitting unit 302. The first light transmitting unit 301 is configured to send a first light carrier to the optical transmission channel, and a functional module can obtain the first light carrier from the optical transmission channel. The first light carrier is modulated based on uplink data to obtain a first optical signal. The light receiving unit 201 is configured to receive the first optical signal from the optical transmission channel, and the first optical signal carries uplink data. The second light transmitting unit 302 is configured to transmit a second optical signal to the optical transmission channel, and the second optical signal carries downlink data.

[0167] In the embodiment of the present application, the silicon optical chip comprises a light transmitting device, which can provide a light source for uplink data and / or downlink data transmission, and realize optical communication between a functional module and other devices.

[0168] Optionally, the electronic chip comprises an optical and electrical signal driving module, a processing module, and a MAC-PHY chip.

[0169] The optoelectrical signal driving module is configured to output a driving signal for controlling signal modulation and photoelectric conversion in the silicon optical chip.

[0170] The processing module is configured to implement digital signal processing.

[0171] The MAC-PHY chip is configured to implement data link layer and physical layer protocol processing.

[0172] It can be understood that the electric chip refers to an electric signal control chip, which is configured to implement optoelectrical signal driving, digital signal processing, interface and protocol support, etc.

[0173] The electric chip controls signal modulation and photoelectric conversion in the silicon optical chip through the optoelectrical signal driving module.

[0174] The electric chip implements digital signal processing through the processing module, including modulation and demodulation, clock and data recovery, error correction coding, signal shaping, equalization, etc., to ensure accurate transmission and high-quality reception of signals.

[0175] Optionally, the electric chip can also implement power adjustment of optical signals.

[0176] The electric chip implements data link layer and physical layer protocol processing through the MAC-PHY chip, providing communication interface and protocol support, which can ensure compatibility with other network devices and correct exchange of data, and thus implement transmission control of uplink signals and downlink signals.

[0177] In the embodiments of the present application, the electric chip implements transmission control of uplink signals and downlink signals through the optoelectrical signal driving module, the processing module and the MAC-PHY chip, which can improve the reliability of optical communication.

[0178] Optionally, the optical communication module and the functional module are integrated on the same board card, and / or the optical communication circuit device is a circuit board or an integrated circuit. Figure 4 The structure diagram of the optical communication circuit device provided in the embodiments of the present application is shown. Figure 4 In the embodiments of the present application, the optical communication module 101 includes a silicon optical chip 20 and an electric chip 30. The silicon optical chip 20 includes an optical receiving unit 201, an optical modulation unit 202 and an optical opening 203. The electric chip 30 includes a processing module 401, an optoelectrical signal driving module 402 and a MAC-PHY chip 403.

[0179] It can be understood that the silicon optical integration technology is adopted in the embodiment of the present application to integrate the optical communication module 101 and the functional module 102 on the same board card, so that the integration of the optical communication module and the functional module can be realized, for example, the high integration of the optical receiving unit and the optical modulation unit with the intelligent sensor or the control unit can be realized, and the reliability of the optical communication can be improved.

[0180] In the embodiment of the present application, the optical communication module and the functional module are integrated on the same board card, so that the reliability of the optical communication can be improved.

[0181] The embodiment of the present application also provides a vehicle-mounted optical communication system.

[0182] Figure 5 The structure schematic diagram of the vehicle-mounted optical communication system provided by the embodiment of the present application is shown in FIG. 1. Figure 5 As shown in FIG. 1, the vehicle-mounted optical communication system 50 includes a first optical communication device 501, N second optical communication devices 502 and an optical transmission channel 503. The first optical communication device 501 is connected with the optical transmission channel 503, and the N second optical communication devices 502 are all connected with the optical transmission channel 503, wherein N is a positive integer greater than or equal to 1, and the N second optical communication devices can specifically include the second optical communication device 1, the second optical communication device i, …, to the second optical communication device N shown in FIG. 2. The second optical communication device i is any one of the N second optical communication devices. Figure 5

[0183] It should be noted that in the scheme provided by the present application, the structure and function of each of the N second optical communication devices are similar, and in order to avoid redundancy, the structure and working principle of the N second optical communication devices provided by the present application will be described below by taking any one of the N second optical communication devices (i.e., the second optical communication device i described above) as an example.

[0184] The first optical communication device 501 is configured to send M first optical carriers with different wavelengths to the optical transmission channel 503, each of the M first optical carriers corresponds to at least one of the N second optical communication devices, M is a positive integer greater than or equal to 1, and M is less than or equal to N.

[0185] It can be understood that the first optical communication device 501 sends M first optical carriers with different wavelengths to the optical transmission channel 503, and each of the M first optical carriers corresponds to at least one of the N second optical communication devices 502, so that at least one of the N second optical communication devices can generate a first optical signal based on the corresponding first optical carrier, and the first optical communication device provides an optical carrier for the uplink data transmission of the N second optical communication devices.​

[0186] For the convenience of describing the signal transmission in different directions, in the embodiments of the present application, the signal transmission from the first optical communication device to the second optical communication device is referred to as downlink signal transmission, and the signal transmission from the second optical communication device to the first optical communication device is referred to as uplink signal transmission, but this does not constitute a limitation to the present application.

[0187] The second optical communication device i of the N second optical communication devices is configured to receive, from the optical transmission channel, a first optical carrier i matched with the second optical communication device i, modulate to generate a first optical signal i according to the first optical carrier i, and send the first optical signal i to the optical transmission channel.

[0188] Optionally, the first optical carrier i matched with the second optical communication device i refers to the first optical carrier i consistent with or matched with the operating wavelength of the second optical communication device i.

[0189] It can be understood that the second optical communication device i of the N second optical communication devices receives the first optical carrier i matched with the second optical communication device i from the optical transmission channel, modulates the first optical carrier i to generate the first optical signal i based on the uplink data, realizes the transmission of the uplink data to the first optical communication device through the wavelength division manner, thereby realizing the parallel transmission of the uplink data, and can make the vehicle-mounted optical communication system realize the high-speed transmission rate on a single optical fiber, and can meet the high-bandwidth demand of the optical fiber communication in the vehicle-mounted communication scenario.

[0190] In the case that M is less than N, the N second optical communication devices include at least two second optical communication devices receiving the first optical carrier of the same wavelength. The at least two second optical communication devices use the first optical carrier of the same wavelength, and the wavelengths of the generated first optical signals are also the same, that is, the at least two second optical communication devices use the first optical carrier of the same wavelength, and it needs to be explained that, in order to avoid interference, the at least two second optical communication devices need to send the first optical signals generated by themselves to the first optical communication device at different time points, that is, the at least two second optical communication devices using the first optical carrier of the same wavelength transmit the uplink data to the first optical communication device in a time-division manner, that is, the uplink transmission adopts the wavelength division multiplexing + time division manner at this time.

[0191] Optionally, the optical transmission channel 503 is a ring network optical transmission channel, the transmission direction of the optical signal in the optical transmission channel is unchanged, the first optical communication device can emit M first optical carriers with different wavelengths, the first optical carriers are transmitted in the optical transmission channel along the downlink direction, the second optical communication device i receives the first optical carrier i matched with the second optical communication device i from the optical transmission channel, generates the first optical signal i by modulating according to the first optical carrier i, and sends the first optical signal i to the optical transmission channel. The first optical signal i can reach the first optical communication device through the optical transmission channel, and the optical transmission between the first optical communication device and the N second optical communication devices can be realized through the ring network optical transmission channel.

[0192] The vehicle-mounted optical communication system provided by the embodiment of the present application connects the first optical communication device and the N second optical communication devices through the optical transmission channel, the first optical communication device sends M first optical carriers with different wavelengths to the optical transmission channel, the second optical communication device i of the N second optical communication devices receives the matched first optical carrier i from the optical transmission channel, generates the first optical signal i by modulating according to the first optical carrier i, and sends the first optical signal i to the optical transmission channel, thereby realizing the optical transmission between the first optical communication device and the N second optical communication devices. On the one hand, the vehicle-mounted optical communication system is based on optical transmission, can not only use the high-speed data stream formed by the optical carrier to meet the high-bandwidth communication demand, has high communication rate, strong anti-electromagnetic environmental interference ability, and good communication quality. On the other hand, the first optical communication device provides the optical carrier for the second optical communication device, so that there is no need to set an optical source in each second optical communication device, and thus the high-temperature environment of the vehicle-mounted optical communication system will not affect the normal work of the second optical communication device, thereby ensuring the applicability and practicability of the vehicle-mounted optical communication system in the vehicle-mounted communication scene.

[0193] Optionally, the first optical communication device is further configured to receive the first optical signal i from the optical transmission channel and convert the first optical signal i into a first electrical signal i.

[0194] It can be understood that the first optical communication device can receive the first optical signal sent by the second optical communication device, perform photoelectric conversion on the first optical signal to obtain a first electrical signal, and thereby realize the transmission of uplink data from the second optical communication device to the first optical communication device.

[0195] Optionally, the first optical communication device comprises an optical emission module and a first optical receiving unit, the optical emission module is configured to emit the first optical carrier, and the first optical receiving unit is configured to receive the first optical signal i from the optical transmission channel.

[0196] Optionally, the optical emission module comprises M first optical emission units, the M first optical emission units are configured to send the M first optical carriers to the optical transmission channel, and the M first optical carriers comprise the first optical carrier i.

[0197] It can be understood that each first light emitting unit sends a first optical carrier of a wavelength to the optical transmission channel. The first optical carriers generated by different first light emitting units are of different wavelengths.

[0198] The first light emitting unit can be a laser device, that is, a light source, and each light source generates a first optical carrier of a wavelength.

[0199] Optionally, the first optical communication device further comprises a demultiplexer, an input end of the demultiplexer being connected to the optical transmission channel, and an output end of the demultiplexer being connected to the first light receiving unit, the demultiplexer being configured to separate first optical signals of different wavelengths.

[0200] In the embodiment of the application, through the demultiplexer, the first optical signals from the plurality of second optical communication devices can be decomposed, thereby realizing wavelength division multiplexing transmission of uplink data of the N second optical communication devices.

[0201] Optionally, the optical transmitting module further comprises a second light emitting unit, the second light emitting unit comprising a first light source configured to emit a second optical carrier, and a second light modulation unit configured to modulate the second optical carrier to obtain a second optical signal, and send the second optical signal to the optical transmission channel, the second optical signal carrying downlink data.

[0202] The first optical communication device comprises an optical transmitting module, which can provide a light source for uplink signal transmission and also can provide a light source for downlink signal transmission, that is, the optical transmitting module further comprises a second light emitting unit, the second light emitting unit comprising a first light source and a second light modulation unit, the second light modulation unit being connected to the first light source, the first light source emitting a second optical carrier, the second optical carrier entering the second light modulation unit, the second light modulation unit modulating the second optical carrier based on downlink data to generate a second optical signal, the second optical signal carrying the downlink data.

[0203] It should be noted that, in actual work, optical signal transmission of the entire vehicle-mounted optical communication system comprises two parts: one is downlink signal transmission from the first optical communication device to the second optical communication device; and the other is uplink signal transmission from the second optical communication device to the first optical communication device. The uplink signal transmission and the downlink signal transmission can be performed simultaneously.

[0204] Optionally, the wavelength of the first light source ranges from 380 nm to 1600 nm.

[0205] Optionally, the wavelength of the first optical carrier i can be the same as or different from the wavelength of the second optical carrier.

[0206] The first optical carrier and the second optical carrier are independent carriers, the second optical carrier is sent to the optical transmission channel after being modulated, and does not interfere with the first optical carrier which is not modulated, so the wavelength of the first optical carrier can be different from or the same as the wavelength of the second optical carrier.

[0207] The first optical communication device provides the first optical carrier which is not modulated for the uplink data through the first optical transmitting unit, and the second optical carrier is transmitted by the second optical transmitting unit, and the second optical carrier is modulated based on the downlink data to generate the second optical signal, and the second optical signal is sent to the optical transmission channel, and the second optical signal carries the downlink data, that is, the second optical transmitting unit transmits the modulated optical signal to the optical transmission channel.

[0208] In some embodiments, the second optical modulation unit includes at least one of the following: a silicon-based optical modulation unit; a lithium niobate-based optical modulation unit.

[0209] In the embodiments of the present application, the first optical communication device provides a light source for uplink and downlink data transmission, realizes optical communication, and has a high communication rate, and each second optical communication device does not need to be provided with a light source, and the high-temperature environment on the vehicle does not affect the normal operation of the second optical communication device. Since the number of the first optical communication devices is small, the position of the first optical communication device can be conveniently deployed to reduce the influence of the temperature of the vehicle-mounted environment on the optical transmitting module in the first optical communication device, and the applicability and practicability of the vehicle-mounted optical communication system in the vehicle-mounted communication scene are ensured.

[0210] In some embodiments, the first optical communication device is the optical communication circuit device described in the foregoing embodiments. For the understanding of the first optical communication device in the present embodiment, reference can be made to the description in the foregoing optical communication circuit device embodiments, which will not be repeated here.

[0211] Optionally, the optical transmitting module is disposed around the central computing platform area of the vehicle and is cooled by a cooling module, and the cooling module includes a semiconductor cooler TEC disposed around the area where the optical transmitting module is located, and / or a water cooling system of the vehicle.

[0212] The optical transmitting module in the first optical communication device is cooled by the semiconductor cooler TEC disposed around the area where the optical transmitting module is located, and / or the water cooling system of the vehicle, so that the influence of the temperature of the vehicle-mounted environment on the optical transmitting module in the first optical communication device can be effectively reduced, the optical power attenuation of the optical transmitting module is avoided, the service life of the optical transmitting module is improved, and the applicability and practicability of the vehicle-mounted optical communication system in the vehicle-mounted communication scene are ensured.

[0213] In some embodiments, the second optical communication device i comprises a silicon optical chip, and the silicon optical chip is configured to modulate the first optical carrier i based on the uplink data to obtain the first optical signal i.

[0214] It can be understood that the second optical communication device i modulates the first optical carrier i based on the uplink data by the silicon optical chip to obtain the first optical signal i.

[0215] In some embodiments, the silicon optical chip comprises:

[0216] an electro-optical modulator configured to modulate the first optical carrier i to obtain the first optical signal i;

[0217] an optical switch configured to switch on or off the optical transmission channel and the electro-optical modulator.

[0218] The optical switch can be switched on to the first end or the second end. The first end is connected to the electro-optical modulator, and the second end is connected to the optical switch of the next second optical communication device. It can be understood that the second end is connected to the optical transmission channel, and the second end is connected to the optical switch of the next second optical communication device through the optical transmission channel.

[0219] When the optical switch is switched on to the first end, the optical transmission channel is switched on to the electro-optical modulator, and the first optical carrier can enter the electro-optical modulator. When the optical switch is switched on to the second end, the optical transmission channel is switched off to the electro-optical modulator, and the first optical carrier will not enter the electro-optical modulator.

[0220] In the embodiments of the present application, the silicon optical chip comprises an optical switch. By setting the optical switch, the optical signal that needs to be modulated can enter the optical modulation unit, and the optical signal that does not need to be modulated can not pass through the optical modulation unit, so that the loss caused by the optical signal passing through the silicon optical chip can be reduced.

[0221] In some embodiments, the silicon optical chip further comprises:

[0222] a light receiver configured to receive a second optical signal from the optical transmission channel, and the second optical signal carries downlink data.

[0223] In the foregoing embodiments, the first optical communication device modulates the second optical carrier based on the downlink data by the second optical transmitting unit to generate the second optical signal, and sends the second optical signal to the optical transmission channel. The second optical signal carries the downlink data, that is, the second optical transmitting unit transmits the modulated optical signal to the optical transmission channel. Correspondingly, the silicon optical chip of the second optical communication device further comprises a light receiver. The light receiver receives the second optical signal from the optical transmission channel, and optoelectronic converts the second optical signal to obtain a second electrical signal.

[0224] In some embodiments, the second optical communication device is the optical communication circuit device described in the foregoing embodiments. The understanding of the second optical communication device in the embodiments of the present application can refer to the description in the foregoing optical communication circuit device, which will not be repeated here.

[0225] In some embodiments, the electronic chip comprises: an optoelectronic signal driving module, a processing module and a MAC-PHY chip,

[0226] The optoelectronic signal driving module is configured to output a driving signal for controlling signal modulation and photoelectric conversion in the silicon optical chip.

[0227] The processing module is configured to implement digital signal processing.

[0228] The MAC-PHY chip is configured to implement data link layer and physical layer protocol processing.

[0229] It can be understood that the electronic chip refers to an electronic signal control chip, which is configured to implement optoelectronic signal driving, digital signal processing, interface and protocol support, etc.

[0230] The electronic chip controls signal modulation and photoelectric conversion in the silicon optical chip through the optoelectronic signal driving module.

[0231] The electronic chip implements digital signal processing through the processing module, including modulation and demodulation, clock and data recovery, error correction coding, signal shaping, equalization, etc., to ensure accurate transmission and high-quality reception of signals.

[0232] Optionally, the electronic chip can also implement power adjustment of optical signals.

[0233] The electronic chip implements data link layer and physical layer protocol processing through the MAC-PHY chip, providing communication interface and protocol support, which can ensure compatibility with other network devices and correct exchange of data, thereby realizing transmission control of uplink signals and downlink signals.

[0234] Optionally, the MAC-PHY chip can share the chip in the ONU in the PON architecture, thereby reducing the cost.

[0235] In the embodiments of the present application, the electronic chip realizes transmission control of uplink signals and downlink signals through the optoelectronic signal driving module, the processing module and the MAC-PHY chip, which can improve the reliability of optical communication.

[0236] In some embodiments, the processing module is further configured to, in a case where it is detected that the functional module transmits uplink data to the first optical communication device, control the optical switch in the silicon optical chip to be turned on to the first end, so as to transmit the first optical carrier to an electro-optical modulator in the silicon optical chip, and the optoelectrical signal driving module is configured to output a first driving signal to drive the electro-optical modulator in the silicon optical chip to operate.

[0237] In a case where it is not detected that the functional module transmits uplink data to the first optical communication device, the processing module controls the optical switch in the silicon optical chip to be turned on to the second end, so as to transmit the first optical carrier to a next second optical communication device without modulation through the optical transmission channel, and the optoelectrical signal driving module is configured to output a second driving signal to control the electro-optical modulator in the silicon optical chip to stop operating.

[0238] In the embodiments of the present application, the processing module controls the turning on or turning off of the optical switch in the silicon optical chip and controls the optoelectrical signal driving module to output a driving signal based on whether the functional module has uplink data to be transmitted, so as to make the electro-optical modulator operate or stop operating, which realizes the control of signal modulation, reduces the loss of the optical carrier, and improves the communication quality.

[0239] In some embodiments, the processing module is further configured to determine whether to respond to the second electrical signal based on the identification information in the converted second electrical signal.

[0240] It should be noted that, in the embodiments of the present application, the second communication device receives the second optical signal from the optical transmission channel, and performs optoelectrical conversion on the second optical signal to obtain the second electrical signal.

[0241] The second optical signal is generated by modulating the second optical carrier based on downlink data by the first communication device, and in the embodiments of the present application, the first communication device transmits the second optical signal in the form of broadcasting.

[0242] Optionally, the second optical signal is broadcast to the N second optical communication devices through a beam splitter, and the parameter of the beam splitter is 1:N. The beam splitter is a passive optical device, which is a 1:N beam splitter, where N is equal to the number of the second optical communication devices.

[0243] The N second optical communication devices receive the second optical signal through broadcasting, and perform photoelectric conversion on the second optical signal to obtain a second electrical signal. The second optical communication devices determine whether to process corresponding information according to the identification information in the second electrical signal. If the identification information of the i-th second optical communication device in the N second optical communication devices matches the identification information in the second electrical signal, the i-th second optical communication device is the destination of the second electrical signal, and the i-th second optical communication device receives the second electrical signal, responds to the second electrical signal, and performs corresponding operations, thereby completing downlink transmission between the first optical communication device and the i-th second optical communication device. If the identification information of the i-th second optical communication device in the N second optical communication devices does not match the identification information in the second electrical signal, the i-th second optical communication device does not process the second electrical signal.

[0244] The vehicle-mounted optical communication system provided in the embodiments of the present application determines whether to respond to the second electrical signal based on the identification information in the second electrical signal, and realizes reliable downlink data transmission based on optical communication.

[0245] Optionally, the i-th second optical communication device in the N second optical communication devices further includes a filter configured to obtain a first optical carrier i that matches the i-th second optical communication device from the M first optical carriers and transmit the first optical carrier i to the electro-optical modulator.

[0246] It can be understood that, in order to reduce interference, each second optical communication device further includes a filter configured to receive the M first optical carriers from the optical transmission channel, transmit a first optical carrier i having a corresponding relationship with the second optical communication device from the M first optical carriers to the electro-optical modulator, and transmit the other M-1 second optical carriers except the first optical carrier i back to the optical transmission channel.

[0247] Optionally, the first optical communication device can be an optical line terminal (OLT), and the second optical communication device can be an optical network unit (ONU.

[0248] Optionally, the filters of the N second optical communication devices correspond to different wavelength bands.

[0249] Optionally, the electro-optical modulator can be a silicon-based modulator or a lithium niobate-based modulator.

[0250] In some embodiments, the first optical communication device can be an optical line terminal (OLT), and the second optical communication device can be an optical network unit (ONU.

[0251] Figure 6The signal transmission schematic diagram in the vehicle-mounted optical communication system provided by the embodiment of the present application is provided. Referring to Figure 6 The second optical communication device comprises ONU1, …, ONU i, …, and the first communication device comprises OLT. The whole ring optical network signal transmission is composed of two parts, i.e., the downlink signal from the first optical communication device to the second optical communication device and the uplink signal from the second optical communication device to the first optical communication device; wherein the uplink and the downlink adopt two independent light sources, and the uplink and the downlink can work simultaneously.

[0252] The downlink transmission scheme is as follows: the downlink adopts the second light emitting unit 302, the wavelength of which ranges from 380 nm to 1600 nm, the second light emitting unit 302 emits the second light carrier, and after the second light modulation unit, the signal is broadcast to different ONU units through the optical splitter 601, wherein the optical splitter is a passive optical device, which is a 1:N optical splitter, wherein N is equal to the number of ONU terminals, wherein the optical signal is transmitted to the optical receiving unit 201 in the ONU, and photoelectric signal conversion is performed, the ONU terminal receives the signal in a broadcast manner, and whether the corresponding information needs to be processed is determined by the ID in the signal, and the downlink signal transmission is completed.

[0253] The uplink signal transmission scheme is as follows: the OLT, LD1, …, and LDi are integrated around the vehicle central computing platform, the continuous laser light source signal, the wavelength of which is λ1, …, λi, …, ranges from 380 nm to 1600 nm, and the wavelength can be the same as or different from the wavelength of the second light carrier. The first light emitting unit 301 of the OLT generates M first light carriers with different wavelengths, sends the M first light carriers with different wavelengths to the optical transmission channel, and each of the M first light carriers corresponds to at least one of the N second optical communication devices, so that at least one of the N second optical communication devices can generate a first optical signal based on the corresponding first light carrier modulation, send the first optical signal to the optical transmission channel, and the first optical signal carries the uplink data. The first optical signal is divided into first optical signals sent by each second optical communication device through the demultiplexer 602, and the optical receiving unit 201 receives each first optical signal and performs photoelectric conversion on each first optical signal.

[0254] Optionally, the transmission time of each second optical communication device is t (t1-tn), wherein t ranges from 125±100 us.

[0255] When the M first optical carriers pass through the ONU 1, the optical switch in the silicon optical chip is turned on to the first end ①, and the ONU 1 has an uplink signal to be transmitted, the ONU 1 acquires the first optical carrier 1 matched thereto, controls the electro-optical modulator in the silicon optical chip through the electrical driving chip to generate the first optical signal 1, and realizes the transmission of the uplink signal. When the first optical signal 1 passes through the remaining n-1 ONUs, the optical switches of the other ONUs are switched to the second end ②, and the transmission is performed to the first optical receiving unit in the OLT to realize the conversion of the optical signal to the electrical signal, and the transmission of the uplink signal is completed.

[0256] The first optical carrier transmitted to the ONU n is also transmitted in a similar manner. When the optical switch in the nth ONU is turned on to the first end ①, the modulator in the silicon optical chip is controlled by the electrical driving chip to modulate the signal, and the transmission of the uplink signal is completed. Before the first optical carrier passes through the n-1 ONUs before the nth ONU (where n≥2), the optical switches in the first n-1 ONUs are all turned on to the second end ②.

[0257] The setting of the optical switch in each silicon optical chip is mainly to avoid the large loss of the light passing through the modulator without modulation, which will seriously affect the power budget of the ring optical network and limit the number of ONUs in the ring optical network.

[0258] In some embodiments, the optical transmission channel includes M optical channels, and each optical channel is used to transmit one of the M first optical carriers.

[0259] It can be understood that the optical transmitting module includes a first optical transmitting unit for transmitting M first optical carriers with different wavelengths. In order to realize the transmission of M first optical carriers with different wavelengths, M light sources are needed to form M optical channels, and each optical channel transmits one of the M first optical carriers. The M first optical carriers are transmitted in parallel in the same optical fiber, and each wavelength of the optical carrier is like an independent optical communication channel. In this way, different second optical communication devices can use the respective first optical carriers to realize uplink data transmission, and the wavelength division multiplexing realizes optical transmission, so that the vehicle-mounted optical communication system can realize high-speed transmission rate on a single optical fiber, and can meet the high-bandwidth demand of optical fiber communication in the vehicle-mounted communication scenario.

[0260] In some embodiments, the optical transmission channel includes K optical channels, and each optical channel is used to transmit at least one of the M first optical carriers, and K is a positive integer and K is less than M.

[0261] It can be understood that the at least one first optical carrier forms an optical channel, and the first optical signals generated based on different wavelengths of the first optical carriers in the optical channel are transmitted to the optical channel in a time-division manner, and by combining wavelength division and time division, power consumption can be reduced, and balance between the number of light sources used by the first optical transmitting unit in the first optical communication device and the number of second optical communication devices can be achieved.

[0262] It should be noted that when M = 1, for uplink signal transmission, different second optical communication devices use a time-division transmission scheme.

[0263] In the embodiments of the present application, by using the uplink data transmission mode combining time division and wavelength division, balance between the number of lasers and the number of second communication devices in the ring optical network can be achieved, which is conducive to the application of the optical network in vehicles and ensures the applicability and practicability of the vehicle-mounted optical communication system in a vehicle communication scenario.

[0264] Figure 7 A flowchart of a vehicle-mounted optical communication method provided in the embodiments of the present application is shown in FIG. 7, and the vehicle-mounted optical communication method comprises the following steps. Figure 7

[0265] Step 710: The first optical communication device generates M first optical carriers, and the M first optical carriers have different wavelengths.

[0266] Step 720: The first optical communication device transmits the M first optical carriers to N second optical communication devices through an optical transmission channel, each of the M first optical carriers corresponds to at least one of the N second optical communication devices, a first optical carrier i in the M first optical carriers is used to modulate a corresponding second optical communication device i to generate a first optical signal i, the second optical communication device i is any one of the N second optical communication devices, N and M are positive integers greater than or equal to 1, and M is less than or equal to N.

[0267] Step 730: The second optical communication device i receives a first optical carrier i matched with the second optical communication device i from the optical transmission channel.

[0268] Step 740: The second optical communication device i modulates the first optical carrier i based on uplink data to generate a first optical signal i.

[0269] Step 750: The second optical communication device i transmits the first optical signal i to the optical transmission channel, the first optical signal is obtained by modulating the first optical carrier i, and the first optical signal carries uplink data.

[0270] ​The light transmission channel transmits M first optical carriers, the M first optical carriers have different wavelengths, and the M first optical carriers are used for N second optical communication devices to receive.

[0271] The vehicle-mounted optical communication method provided by the embodiment of the application realizes wavelength division multiplexing transmission of uplink data from the second optical communication device to the first optical communication device by emitting M first optical carriers and receiving a first optical signal carrying uplink data through the first optical communication device, and has high communication rate and good communication quality based on optical communication.

[0272] Optionally, a first optical carrier j in the M first optical carriers is used for modulating a corresponding second optical communication device j1 to generate a first optical signal j1 and for modulating a second optical communication device j2 to generate a first optical signal j1.

[0273] It can be understood that the second optical communication device j1 and the second optical communication device j2 modulate the first optical carrier j with the same wavelength, and in order to avoid interference, the second optical communication device j1 and the second optical communication device j2 need to send the first optical signal generated by each other to the first optical communication device at different time points, that is, at least two second optical communication devices using the first optical carrier with the same wavelength transmit uplink data to the first optical communication device in a time-division manner, that is, the uplink transmission adopts a wavelength division multiplexing + time division manner at this time.

[0274] Optionally, the method further comprises:

[0275] The first optical communication device receives the first optical signal i from the light transmission channel.

[0276] Optionally, as shown in Figure 8 The method further comprises:

[0277] Step 760, the first optical communication device emits a second optical carrier, modulates the second optical carrier to obtain a second optical signal;

[0278] Step 770, broadcasting the second optical signal to the light transmission channel, the second optical signal carrying downlink data.

[0279] Step 780, the second optical communication device i receives the second optical signal, and optoelectronic conversion of the second optical signal obtains a second electrical signal;

[0280] Step 790, the second optical communication device i determines whether to process the corresponding information through the identification information in the second electrical signal.

[0281] If the identification information of the second optical communication device i of the N second optical communication devices matches the identification information in the second electrical signal, the destination device of the second electrical signal is the second optical communication device i, and the second optical communication device i receives the second electrical signal and performs corresponding operations in response to the second electrical signal.

[0282] It should be noted that the embodiments of the present application do not limit the order between steps 710-770.

[0283] Thus, the downlink transmission between the first optical communication device and the second optical communication device i is completed.

[0284] If the identification information of the second optical communication device i of the N second optical communication devices does not match the identification information in the second signal, the second optical communication device i does not process the second electrical signal.

[0285] Optionally, the first optical communication device includes an optical transmitting module and a first optical receiving unit, the optical transmitting module is configured to transmit the first optical carrier, and the first optical receiving unit is configured to receive the first optical signal i from the optical transmission channel.

[0286] Optionally, the optical transmitting module includes M first optical transmitting units, the M first optical transmitting units are configured to transmit the M first optical carriers to the optical transmission channel, and the M first optical carriers include the first optical carrier i.

[0287] Optionally, the first optical communication device further includes a demultiplexer, an input end of the demultiplexer is connected to the optical transmission channel, and an output end of the demultiplexer is connected to the first optical receiving unit, and the demultiplexer is configured to separate the first optical signals of different wavelengths.

[0288] Optionally, the optical transmitting module further includes a second optical transmitting unit, the second optical transmitting unit includes a first light source configured to emit a second optical carrier, and the second optical transmitting unit further includes a second optical modulation unit configured to modulate the second optical carrier to obtain a second optical signal, transmit the second optical signal to the optical transmission channel, and the second optical signal carries downlink data.

[0289] Optionally, the first optical communication device is the optical communication circuit device described in the foregoing embodiments.

[0290] Optionally, the optical transmission channel includes M optical channels, and each optical channel is configured to transmit one of the M first optical carriers.

[0291] Optionally, the optical transmission channel comprises K optical channels, each of the optical channels being configured to transmit at least one of the M first optical carriers, K being a positive integer and K being less than M.

[0292] Optionally, the second optical communication device i comprises a silicon optical chip configured to modulate the first optical carrier i to obtain the first optical signal i, the first optical signal i carrying uplink data.

[0293] Optionally, the silicon optical chip comprises:

[0294] an electro-optical modulator configured to modulate the first optical carrier i to obtain the first optical signal i;

[0295] an optical switch configured to turn on or turn off the optical transmission channel and the electro-optical modulator.

[0296] Optionally, the silicon optical chip further comprises:

[0297] an optical receiver configured to receive a second optical signal from the optical transmission channel, the second optical signal carrying downlink data.

[0298] Optionally, the second optical communication device is the optical communication circuit device as described in the foregoing embodiments.

[0299] Optionally, the electronic chip comprises an optical-electrical signal driving module, a processing module and a MAC-PHY chip,

[0300] wherein the optical-electrical signal driving module is configured to output a driving signal for controlling signal modulation and optical-electrical conversion in the silicon optical chip;

[0301] the processing module is configured to implement digital signal processing;

[0302] the MAC-PHY chip is configured to implement data link layer and physical layer protocol processing.

[0303] Optionally, the processing module is further configured to, in a case where it is detected that the functional module transmits uplink data to the first optical communication device, control the optical switch in the silicon optical chip to turn on to a first end, so as to transmit the first optical carrier to the electro-optical modulator in the silicon optical chip, and the optical-electrical signal driving module is configured to output a first driving signal to drive the electro-optical modulator in the silicon optical chip to operate;

[0304] In a case where it is detected that the functional module does not send uplink data to the first optical communication device, the optical switch in the silicon optical chip is controlled to be turned on to a second end, so that the first optical carrier is transmitted to a next second optical communication device through the optical transmission channel without modulation, and the optoelectronic signal driving module is configured to output a second driving signal to control the electro-optical modulator in the silicon optical chip to stop running.

[0305] Optionally, the processing module is further configured to determine whether to respond to the second electrical signal based on the identification information in the converted second electrical signal of the second optical signal.

[0306] Optionally, the second optical communication device i in the N second optical communication devices further comprises a filter configured to obtain a first optical carrier i matched with the second optical communication device i from the M first optical carriers and transmit the first optical carrier i to the electro-optical modulator.

[0307] Optionally, the optical transmission channel comprises M optical channels, and each optical channel is configured to transmit one optical carrier in the M first optical carriers.

[0308] Optionally, the optical transmission channel comprises K optical channels, and each optical channel is configured to transmit at least one optical carrier in the M first optical carriers, K is a positive integer, and K is less than M.

[0309] For understanding of the corresponding content in the vehicle-mounted optical communication method in the embodiments of the present application, reference can be made to the related description in the foregoing vehicle-mounted optical communication system embodiments, which will not be repeated here.

[0310] The vehicle-mounted optical communication method provided in the embodiments of the present application connects a first optical communication device and N second optical communication devices through an optical transmission channel, the first optical communication device transmits M first optical carriers with different wavelengths to the optical transmission channel, a second optical communication device i in the N second optical communication devices receives a matched first optical carrier i from the optical transmission channel, generates a first optical signal i according to the first optical carrier i, and transmits the first optical signal i to the optical transmission channel, thereby realizing optical transmission between the first optical communication device and the N second optical communication devices. On the one hand, the vehicle-mounted optical communication system is based on optical transmission, can utilize high-speed data streams formed by optical carriers to meet high-bandwidth communication requirements, has high communication rate, strong anti-electromagnetic environmental interference capability, and good communication quality. On the other hand, the first optical communication device provides optical carriers for the second optical communication devices, so that there is no need to set up light sources in each second optical communication device, so that the high-temperature environment in the vehicle does not affect the normal work of the second optical communication devices, thereby ensuring the applicability and practicability of the vehicle-mounted optical communication system in the vehicle-mounted communication scenario.

[0311] In some embodiments, as Figure 9As shown, the embodiments of the present application also provide a first optical communication device 501, comprising a processor 901, wherein the processor 901 is connected with a memory 902, and the memory 902 stores a computer program, and the processor implements each process of the vehicle-mounted optical communication method on the first optical communication device side according to the program, and achieves the same technical effects. To avoid repetition, details are not described here.

[0312] In some embodiments, as Figure 10 As shown, the embodiments of the present application also provide a second optical communication device 502, comprising a processor 901, wherein the processor 901 is connected with a memory 902, and the memory 902 stores a computer program, and the processor implements each process of the vehicle-mounted optical communication method on the second optical communication device side according to the program, and achieves the same technical effects. To avoid repetition, details are not described here.

[0313] The embodiments of the present application also provide an optical communication system, as Figure 11 As shown, the optical communication system 1100 comprises the first optical communication device 501 as Figure 9 As shown, the second optical communication device 502 as Figure 10

[0314] The embodiments of the present application also provide a vehicle, comprising the optical communication circuit device in the foregoing embodiments, or comprising the vehicle-mounted optical communication system in the foregoing embodiments, or comprising the optical communication device in the foregoing embodiments, or comprising the optical communication system in the foregoing embodiments.

[0315] For the understanding of the vehicle, reference can be made to the description in the foregoing embodiments, and details are not described here.

[0316] The embodiments of the present application also provide a non-transitory computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to implement each process of the vehicle-mounted optical communication method, and achieves the same technical effects. To avoid repetition, details are not described here.

[0317] The processor is the processor in the optical communication device in the foregoing embodiments. The readable storage medium comprises a computer readable storage medium, such as a computer readable memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc.

[0318] The embodiments of the present application also provide a computer program product, comprising a computer program, and the computer program is executed by a processor to implement the vehicle-mounted optical communication method.

[0319] ​The processor is the processor in the optical communication device in the above embodiments. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0320] The chip provided in the embodiments of the present application includes a processor and a communication interface, the communication interface is coupled with the processor, the processor is used to run programs or instructions, realizes the processes of the above vehicle-mounted optical communication method embodiments, and can achieve the same technical effects. To avoid repetition, details are not described herein.

[0321] It should be understood that the chip mentioned in the embodiments of the present application can also be referred to as a system-level chip, a system chip, a chip system, or a system-on-chip chip.

[0322] It should be noted that in this document, the term "comprising" or "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of additional identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to the order of performing the functions as shown or discussed, but can also include performing the functions in a substantially simultaneous manner or in reverse order, for example, the described method can be performed in an order different from that described, and various steps can also be added, omitted or combined. In addition, the features described with reference to some examples can be combined in other examples.

[0323] From the above description of the embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment method can be realized by means of software and necessary general hardware platform, of course, it can also be realized by hardware, but in many cases, the former is a better embodiment. Based on such understanding, the technical solutions of the present application can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes a plurality of instructions for making a terminal (which can be a mobile phone, computer, server, or network device, etc.) execute the methods described in various embodiments of the present application.

[0324] The embodiments of the present application are described above with reference to the drawings, but the present application is not limited to the specific embodiments described above, and the specific embodiments described above are merely illustrative, not restrictive, and a person of ordinary skill in the art can make many forms under the inspiration of the present application without departing from the purpose of the present application and the scope protected by the claims, all of which belong to the protection of the present application.

[0325] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Also, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0326] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. An optical communication circuit device, characterized in that, The circuit device integrates an optical communication module and functional modules. The optical communication module is used to enable optical communication between the functional module and other devices. The functions implemented by the functional module are different from those of the optical communication module.

2. The optical communication circuit device according to claim 1, characterized in that, The optical communication module includes a silicon photonics chip and an electrical chip. The silicon photonics chip is used to modulate and / or receive optical signals, and the electrical chip is used to control the transmission of optical signals.

3. The optical communication circuit device according to claim 2, characterized in that, The silicon photonics chip includes: An optical modulation unit is used to modulate a first optical carrier received from an optical transmission channel to obtain a first optical signal; or... The silicon photonics chip includes an optical modulation unit and an optical receiving unit. The optical receiving unit is used to receive a second optical signal, perform photoelectric conversion on the second optical signal to obtain a second electrical signal, and the second optical signal carries downlink data.

4. The optical communication circuit device according to claim 3, characterized in that, The silicon photonics chip further includes an optical switch, which is used to turn on to a first end when the functional module sends uplink data, and to turn on to a second end when the functional module does not send uplink data. The first end is connected to the optical modulation unit, and the second end is connected to the optical switch of the next optical communication circuit device.

5. The optical communication circuit device according to claim 2, characterized in that, The silicon photonics chip includes: A first optical transmitting unit and an optical receiving unit, wherein the first optical transmitting unit is used to transmit a first optical carrier to an optical transmission channel, and the optical receiving unit is used to receive a first optical signal from the optical transmission channel, the first optical signal carrying uplink data, and the first optical signal being obtained by modulating the first optical carrier; and / or The silicon photonics chip includes a second optical emitting unit, which is used to emit a second optical signal to the optical transmission channel, and the second optical signal carries downlink data.

6. The optical communication device according to any one of claims 3-5, characterized in that, The optical receiving unit includes one of the following: Silicon-based silicon-germanium process PIN / APD; PIN / APD based on III-V semiconductors; The optical modulation unit includes one of the following: Silicon-based optical modulation unit; Lithium niobate-based optical modulation unit; The optical switch includes one of the following: Thermally modulated optical switch; Electrically modulated optical switch.

7. The optical communication circuit device according to any one of claims 2-6, characterized in that, The electrical chip includes: a photoelectric signal driving module, a processing module, and a MAC-PHY chip. The photoelectric signal driving module is used to output driving signals to control the signal modulation and photoelectric conversion in the silicon photonic chip. The processing module is used to implement digital signal processing; The MAC-PHY chip is used to implement data link layer and physical layer protocol processing.

8. The optical communication circuit device according to claim 1, characterized in that, The optical communication module and the functional module are integrated on the same board; and / or The optical communication circuit device is a circuit board or an integrated circuit.

9. A vehicle-mounted optical communication system, characterized in that, include: A first optical communication device, N second optical communication devices, and an optical transmission channel. The first optical communication device is connected to the optical transmission channel, and all N second optical communication devices are connected to the optical transmission channel. The first optical communication device is used to send M first optical carriers with different wavelengths to the optical transmission channel. Each of the M first optical carriers corresponds to at least one of the N second optical communication devices. The second optical communication device i among the N second optical communication devices is used to receive a first optical carrier i that matches the second optical communication device i from the optical transmission channel, generate a first optical signal i based on the first optical carrier i, and send the first optical signal i to the optical transmission channel. N and M are both positive integers greater than or equal to 1, and M is less than or equal to N.

10. The vehicle-mounted optical communication system according to claim 9, characterized in that, Among the N second optical communication devices, at least two second optical communication devices receive the same wavelength first optical carrier.

11. The vehicle-mounted optical communication system according to claim 9, characterized in that, The first optical communication device is further configured to receive the first optical signal i from the optical transmission channel and convert the first optical signal i into a first electrical signal i.

12. The vehicle-mounted optical communication system according to claim 9, characterized in that, The first optical communication device includes an optical transmitting module and a first optical receiving unit. The optical transmitting module is used to transmit the first optical carrier, and the first optical receiving unit is used to receive the first optical signal i from the optical transmission channel.

13. The vehicle-mounted optical communication system according to claim 12, characterized in that, The optical transmitting module includes M first optical transmitting units, which are used to transmit the M first optical carriers to the optical transmission channel, wherein the M first optical carriers include the first optical carrier i.

14. The vehicle-mounted optical communication system according to claim 13, characterized in that, The first optical communication device further includes a dewavelength division multiplexer, the input of which is connected to the optical transmission channel, and the output of which is connected to the first optical receiving unit. The dewavelength division multiplexer is used to separate first optical signals of different wavelengths.

15. The vehicle-mounted optical communication system according to claim 13, characterized in that, The optical transmitting module further includes a second optical transmitting unit, which includes a first light source for transmitting a second optical carrier; the second optical transmitting unit also includes a second optical modulation unit for modulating the second optical carrier to obtain a second optical signal, and transmitting the second optical signal to the optical transmission channel, wherein the second optical signal carries downlink data.

16. The vehicle-mounted optical communication system according to any one of claims 13-15, characterized in that, The first optical communication device is the optical communication circuit device according to any one of claims 5-8.

17. The vehicle-mounted optical communication system according to any one of claims 9-16, characterized in that, The second optical communication device i includes a silicon photonics chip, which is used to modulate the first optical carrier i to obtain the first optical signal i, the first optical signal carrying uplink data.

18. The vehicle-mounted optical communication system according to claim 17, characterized in that, The silicon photonics chip includes: An electro-optic modulator is used to modulate the first optical carrier i to obtain the first optical signal i; An optical switch is used to connect or disconnect the optical transmission channel from the electro-optic modulator.

19. The vehicle-mounted optical communication system according to claim 18, characterized in that, The silicon photonics chip also includes: An optical receiver receives a second optical signal from the optical transmission channel, the second optical signal carrying downlink data.

20. The vehicle-mounted optical communication system according to any one of claims 17-19, characterized in that, The second optical communication device is the optical communication circuit device according to any one of claims 3-4 and 6-8.

21. The vehicle-mounted optical communication system according to claim 20, characterized in that, The electrical chip includes: a photoelectric signal driving module, a processing module, and a MAC-PHY chip. The photoelectric signal driving module is used to output driving signals to control the signal modulation and photoelectric conversion in the silicon photonic chip. The processing module is used to implement digital signal processing; The MAC-PHY chip is used to implement data link layer and physical layer protocol processing.

22. The vehicle-mounted optical communication system according to claim 21, characterized in that, The processing module is further configured to control the optical switch in the silicon photonics chip to be turned on to the first end when the function module sends uplink data to the first optical communication device, so as to transmit the first optical carrier to the electro-optic modulator in the silicon photonics chip. The photoelectric signal driving module is configured to output a first driving signal to drive the electro-optic modulator in the silicon photonics chip to operate. If no uplink data is detected from the functional module to the first optical communication device, the optical switch in the silicon photonics chip is controlled to be turned on to the second end so that the first optical carrier is transmitted to the next second optical communication device through the optical transmission channel without modulation. The photoelectric signal driving module is used to output a second driving signal to control the electro-optic modulator in the silicon photonics chip to stop operating.

23. The vehicle-mounted optical communication system according to claim 21, characterized in that, The processing module is further configured to: determine whether to respond to the second electrical signal based on the identification information in the second electrical signal converted from the second optical signal.

24. The vehicle-mounted optical communication system according to any one of claims 17-23, characterized in that, The second optical communication device i among the N second optical communication devices further includes a filter, which is used to obtain a first optical carrier i that matches the second optical communication device i from the M first optical carriers and transmit it to the electro-optic modulator.

25. The vehicle-mounted optical communication system according to any one of claims 9-24, characterized in that, The optical transmission channel includes M optical channels, each of which is used to transmit one of the M first optical carriers.

26. The vehicle-mounted optical communication system according to any one of claims 9-24, characterized in that, The optical transmission channel includes K optical channels, each of which is used to transmit at least one of the M first optical carriers, where K is a positive integer and K is less than M.

27. A vehicle-mounted optical communication method, characterized in that, include: The first optical communication device generates M first optical carriers, wherein the M first optical carriers have different wavelengths; The first optical communication device sends the M first optical carriers to N second optical communication devices through an optical transmission channel. Each of the M first optical carriers corresponds to at least one of the N second optical communication devices. The first optical carrier i in the M first optical carriers is used to modulate the corresponding second optical communication device i to generate a first optical signal i. The second optical communication device i is any one of the N second optical communication devices. N and M are both positive integers greater than or equal to 1, and M is less than or equal to N.

28. The method according to claim 27, characterized in that, The first optical carrier j among the M first optical carriers is used to modulate the corresponding second optical communication device j1 to generate the first optical signal j1, and is also used to modulate the second optical communication device j2 to generate the first optical signal j1.

29. The method according to claim 27, characterized in that, The method further includes: The first optical communication device receives the first optical signal i from the optical transmission channel.

30. The method according to claim 27, characterized in that, The first optical communication device includes an optical transmitting module and a first optical receiving unit. The optical transmitting module is used to transmit the first optical carrier, and the first optical receiving unit is used to receive the first optical signal i from the optical transmission channel.

31. The method according to claim 30, characterized in that, The optical transmitting module includes M first optical transmitting units, which are used to transmit the M first optical carriers to the optical transmission channel, wherein the M first optical carriers include the first optical carrier i.

32. The method according to claim 31, characterized in that, The first optical communication device further includes a dewavelength division multiplexer, the input of which is connected to the optical transmission channel, and the output of which is connected to the first optical receiving unit. The dewavelength division multiplexer is used to separate first optical signals of different wavelengths.

33. The method according to claim 32, characterized in that, The optical transmitting module further includes a second optical transmitting unit, which includes a first light source for transmitting a second optical carrier; the second optical transmitting unit also includes a second optical modulation unit for modulating the second optical carrier to obtain a second optical signal, and transmitting the second optical signal to the optical transmission channel, wherein the second optical signal carries downlink data.

34. The method according to claims 27-34, characterized in that, The first optical communication device is the optical communication circuit device according to any one of claims 5-8.

35. The vehicle-mounted optical communication system according to any one of claims 27-34, characterized in that, The optical transmission channel includes M optical channels, each of which is used to transmit one of the M first optical carriers.

36. The vehicle-mounted optical communication system according to any one of claims 27-34, characterized in that, The optical transmission channel includes K optical channels, each of which is used to transmit at least one of the M first optical carriers, where K is a positive integer and K is less than M.

37. A vehicle-mounted optical communication method, characterized in that, include: The second optical communication device i receives a first optical carrier i that is matched with the second optical communication device from the optical transmission channel; The second optical communication device i sends a first optical signal i to the optical transmission channel. The first optical signal is obtained by modulating the first optical carrier i and carries uplink data. The optical transmission channel transmits M first optical carriers, each with a different wavelength. The M first optical carriers are used for reception by N second optical communication devices, where each second optical communication device i is any one of the N second optical communication devices. N and M are both positive integers greater than or equal to 1, and M is less than or equal to N.

38. The method according to claim 37, characterized in that, The second optical communication device i includes a silicon photonics chip, which is used to modulate the first optical carrier i to obtain the first optical signal i, and the first optical signal i carries uplink data.

39. The method according to claim 38, characterized in that, The silicon photonics chip includes: An electro-optic modulator is used to modulate the first optical carrier i to obtain the first optical signal i; An optical switch is used to connect or disconnect the optical transmission channel from the electro-optic modulator.

40. The method according to claim 39, characterized in that, The silicon photonics chip also includes: An optical receiver receives a second optical signal from the optical transmission channel, the second optical signal carrying downlink data.

41. The method according to any one of claims 37-40, characterized in that, The second optical communication device is the optical communication circuit device according to any one of claims 3-4 and 6-8.

42. The method according to claim 41, characterized in that, The electrical chip includes: a photoelectric signal driving module, a processing module, and a MAC-PHY chip. The photoelectric signal driving module is used to output driving signals to control the signal modulation and photoelectric conversion in the silicon photonic chip. The processing module is used to implement digital signal processing; The MAC-PHY chip is used to implement data link layer and physical layer protocol processing.

43. The method according to claim 42, characterized in that, The processing module is further configured to control the optical switch in the silicon photonics chip to be turned on to the first end when the function module sends uplink data to the first optical communication device, so as to transmit the first optical carrier to the electro-optic modulator in the silicon photonics chip. The photoelectric signal driving module is configured to output a first driving signal to drive the electro-optic modulator in the silicon photonics chip to operate. If no uplink data is detected from the functional module to the first optical communication device, the optical switch in the silicon photonics chip is controlled to be turned on to the second end so that the first optical carrier is transmitted to the next second optical communication device through the optical transmission channel without modulation. The photoelectric signal driving module is used to output a second driving signal to control the electro-optic modulator in the silicon photonics chip to stop operating.

44. The method according to claim 42, characterized in that, The processing module is further configured to: determine whether to respond to the second electrical signal based on the identification information in the second electrical signal converted from the second optical signal.

45. The method according to any one of claims 37-44, characterized in that, The second optical communication device i among the N second optical communication devices further includes a filter, which is used to obtain a first optical carrier i that matches the second optical communication device i from the M first optical carriers and transmit it to the electro-optic modulator.

46. ​​The method according to any one of claims 37-45, characterized in that, The optical transmission channel includes M optical channels, each of which is used to transmit one of the M first optical carriers.

47. The method according to any one of claims 37-45, characterized in that, The optical transmission channel includes K optical channels, each of which is used to transmit at least one of the M first optical carriers, where K is a positive integer and K is less than M.

48. An optical communication device, comprising a processor connected to a memory storing a computer program, characterized in that, When the processor executes the program, it implements the vehicle-mounted optical communication method as described in any one of claims 27-36.

49. An optical communication device, comprising a processor connected to a memory storing a computer program, characterized in that, When the processor executes the program, it implements the vehicle-mounted optical communication method as described in any one of claims 37-47.

50. An optical communication system, characterized in that, It includes the optical communication device of claim 48 and the optical communication device of claim 49.

51. A vehicle, characterized in that, It includes the optical communication circuit device according to any one of claims 1-8, or the vehicle-mounted optical communication system according to any one of claims 9 to 25, or the optical communication device according to claims 48 and / or 49, or the optical communication system according to claim 50.

52. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the vehicle-mounted optical communication method as described in any one of claims 27-36, or implements the vehicle-mounted optical communication method as described in any one of claims 37-47.

53. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the vehicle-mounted optical communication method as described in any one of claims 27-36, or implements the vehicle-mounted optical communication method as described in any one of claims 37-47.

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