Optical communication circuit apparatus, in-vehicle optical communication system and method, and device and vehicle

Abstract

An optical communication circuit apparatus, an in-vehicle optical communication system and method, and a device and a vehicle. The in-vehicle optical communication system comprises: a first optical communication device, N second optical communication devices, and an optical transmission channel, wherein the first optical communication device is connected to the optical transmission channel, and the N second optical communication devices are each connected to the optical transmission channel; the first optical communication device is configured to send, to the optical transmission channel, M first optical carriers having different wavelengths, each of the M first optical carriers corresponding to at least one of the N second optical communication devices; and a second optical communication device i among the N second optical communication devices is configured to receive from the optical transmission channel a first optical carrier i matching the second optical communication device i, perform modulation on the basis of the first optical carrier i to generate a first optical signal i, and send the first optical signal i to the optical transmission channel, both N and M being positive integers greater than or equal to 1, and M being less than or equal to N.

Description

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

[0001] The present application claims priority to the Chinese patent application No. 202410744964.0, filed on June 7, 2024, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present disclosure relates to the technical field of vehicle-mounted communication, and in particular to an optical communication circuit device, a vehicle-mounted optical communication system, a method, an equipment and a vehicle. BACKGROUND

[0003] 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. SUMMARY

[0004] The present disclosure aims to at least solve one of the technical problems existing in the related art. To this end, the present disclosure 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 influence of the vehicle-mounted environment on the optical communication equipment while meeting the bandwidth requirements of vehicle-mounted communication.

[0005] In a first aspect, an optical communication circuit device is provided, which integrates an optical communication module and a functional module. The optical communication module is configured to realize optical communication between the functional module and other devices. The functional module implements a function different from that of the optical communication module.

[0006] 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. The optical communication circuit device can realize optical communication between the functional module and other devices, and is suitable for vehicle-mounted communication application scenarios.

[0007] In a second aspect, a vehicle-mounted optical communication system is provided, and 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 each of the N second optical communication devices is connected with the optical transmission channel; 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, and 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 by modulation according to the first optical carrier i, and send the first optical signal i to the optical transmission channel, wherein N and M are positive integers greater than or equal to 1, and M is less than or equal to N.

[0008] In the above technical solution, the first optical communication device and the N second optical communication devices are connected through the optical transmission channel, the first optical communication device can emit M first optical carriers with different wavelengths, a second optical communication device i in the N second optical communication devices receives a first optical carrier i matched with the second optical communication device i from the optical transmission channel, and generates a first optical signal i by modulation according to the first optical carrier i, so as to realize 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 utilize high-speed data flow formed by optical carriers to meet 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 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 a high-temperature environment in the vehicle does not affect the normal work of the second optical communication device, thereby ensuring applicability and practicability of the vehicle-mounted optical communication system in a vehicle-mounted communication scene.

[0009] In a third aspect, a vehicle-mounted optical communication method is provided, and the vehicle-mounted optical communication method comprises: a first optical communication device generates M first optical carriers, 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, a first optical carrier i in the M first optical carriers is modulated by a 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.

[0010] In a fourth aspect, a vehicle-mounted optical communication method is provided, comprising: receiving, by a second optical communication device i, a first optical carrier i matching the second optical communication device from an optical transmission channel; sending, by the second optical communication device i, a first optical signal i to the optical transmission channel, the first optical signal being obtained by modulating the first optical carrier i, and the first optical signal carrying uplink data; and the optical transmission channel transmitting 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, and the second optical communication device i being any one of the N second optical communication devices.

[0011] In a fifth aspect, an optical communication device is provided, comprising a processor and a memory connected to the processor, and the memory storing a computer program, and the processor executing the program to implement the vehicle-mounted optical communication method of the third aspect.

[0012] In a sixth aspect, an optical communication device is provided, comprising a processor and a memory connected to the processor, and the memory storing a computer program, and the processor executing the program to implement the vehicle-mounted optical communication method of the fourth aspect.

[0013] In a seventh aspect, an optical communication system is provided, comprising the optical communication device of the fifth aspect and the optical communication device of the sixth aspect.

[0014] In an eighth aspect, a vehicle is provided, comprising the optical communication circuit device of the first aspect, or comprising the vehicle-mounted optical communication system of the second aspect, or comprising the optical communication device of the fifth aspect, or comprising the optical communication device of the sixth aspect, or comprising the optical communication system of the seventh aspect.

[0015] In a ninth aspect, a non-transitory computer-readable storage medium is provided, storing a computer program, and the computer program being executed by a processor to implement the vehicle-mounted optical communication method of the third aspect or the vehicle-mounted optical communication method of the fourth aspect.

[0016] In a tenth aspect, a chip is provided, comprising a processor and a communication interface coupled to the processor, and the processor being configured to run a program or an instruction to implement the vehicle-mounted optical communication method of the third aspect or the vehicle-mounted optical communication method of the fourth aspect.

[0017] In an eleventh aspect, a computer program product is provided, comprising a computer program, and the computer program being executed by a processor to implement the vehicle-mounted optical communication method of the third aspect or the vehicle-mounted optical communication method of the fourth aspect.

[0018] Additional aspects and advantages of the present disclosure will be made apparent from the following description of embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0019] The above and additional aspects and advantages of the present disclosure will become apparent from the following description of embodiments, taken in conjunction with the accompanying drawings.

[0020] FIG. 1 is a block diagram of an optical communication circuit device according to some embodiments;

[0021] FIG. 2 is a schematic diagram of a silicon optical chip according to some embodiments;

[0022] FIG. 3 is a schematic diagram of another silicon optical chip according to some embodiments;

[0023] FIG. 4 is a schematic diagram of an optical communication circuit device according to some embodiments;

[0024] FIG. 5 is a schematic diagram of an in-vehicle optical communication system according to some embodiments;

[0025] FIG. 6 is a schematic diagram of signal transmission in an in-vehicle optical communication system according to some embodiments;

[0026] FIG. 7 is a flowchart of an in-vehicle optical communication method according to some embodiments;

[0027] FIG. 8 is a flowchart of another in-vehicle optical communication method according to some embodiments;

[0028] FIG. 9 is a block diagram of a first optical communication device according to some embodiments;

[0029] FIG. 10 is a block diagram of a second optical communication device according to some embodiments;

[0030] FIG. 11 is a block diagram of an optical communication system according to some embodiments;

[0031] FIG. 12 is a block diagram of a vehicle according to some embodiments.

[0032] Reference signs: 10: optical communication circuit device; 101: optical communication module; 102: functional module; 20: silicon optical chip; 201: optical receiving unit; 202: optical modulation unit; 203: optical switch; 301: first optical transmitting unit; 302: second optical transmitting unit; 30: electrical chip; 401: processing module; 402: optoelectrical signal driving module; 403: MAC-PHY chip; 50: in-vehicle optical communication system; 501: first optical communication device; 502: second optical communication device; 503: optical transmission channel; 601: optical splitter; 602: optical demultiplexer; 1100: optical communication system; 901: processor; 902: memory. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present disclosure will be clearly described below with reference to the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are some, but not all, of the embodiments of the present disclosure. Based on the embodiments in the present disclosure, all other embodiments obtained by a person of ordinary skill in the art belong to the scope of protection of the present disclosure.

[0034] The terms "first", "second", and the like in the specification and claims of the present disclosure 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 disclosure can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally a class and do not limit the number of objects, for example, the first object can be one or more.

[0035] In order to meet the bandwidth demand of vehicle-mounted communication, the related technology uses optical fiber to replace twisted pair as the transmission medium, however, for vehicle-mounted optical communication, the optical transmitting module in optical communication is difficult to meet the temperature (105℃) specification of vehicle-mounted, mainly including two reasons: first, the optical transmitting module is a semiconductor laser, which causes the optical power of the optical transmitting laser to attenuate 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 demand of vehicle-mounted communication and reducing the impact of the vehicle-mounted environment on the optical communication equipment, is a problem to be solved.

[0036] Based on this, some embodiments of the present disclosure provide an optical communication circuit device, a vehicle-mounted optical communication system, a method, equipment and a vehicle.

[0037] The optical communication circuit device, the vehicle-mounted optical communication system, the method, the equipment and the vehicle provided by some embodiments of the present disclosure will be described in detail below in combination with the drawings and some embodiments and application scenarios.

[0038] As shown in FIG. 1, the optical communication circuit device 10 integrates an optical communication module 101 and a functional module 102, the optical communication module is configured to realize optical communication between the functional module and other devices, and the functional module realizes a function 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.

[0039] In some embodiments, the functional module 102 can be a sensor, an actuator, a control unit, a terminal device, a server, etc. on the vehicle, and the present disclosure does not limit the type of functional module.

[0040] For example, 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.

[0041] The functional module 102 performs optical communication with other devices through the optical communication module 101.

[0042] In some embodiments, the other device can be another optical communication circuit device, another functional module, another optical communication device, etc., and the present disclosure does not limit the same.

[0043] In some embodiments of the present disclosure, 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, so that the functional module can perform optical communication with other devices, has high communication rate, strong anti-electromagnetic environmental interference capability, and good communication quality.

[0044] In some embodiments of the present disclosure, the optical communication circuit device can be an integrated circuit or a circuit board or a chip.

[0045] It can be understood that in some embodiments of the present disclosure, 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 an integrated chip together with the electric control module of the sensor, the actuator, the controller, etc.

[0046] In some embodiments, the optical communication module 101 includes a silicon optical chip configured to perform at least one of modulating an optical signal or transceiving an optical signal, and an electric chip configured to implement transmission control of the optical signal.

[0047] In some embodiments, the silicon optical chip receives a downlink signal and modulates an uplink signal.

[0048] It should be noted that the downlink signal refers to an optical signal sent by the other device 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, which processes the electric signal.

[0049] The uplink signal refers to an optical signal sent by the functional module to the other device, and the silicon optical chip modulates an optical carrier based on uplink data sent by the functional module to obtain the uplink signal.

[0050] It should be noted that the uplink in some embodiments of the present disclosure refers to the direction of one link, and the downlink refers to the opposite direction of the uplink. The uplink can also generally refer to the direction of a certain link, and the downlink can also correspondingly generally refer to the direction of another link.

[0051] In some embodiments, the silicon optical chip transmits optical signals to provide light sources for uplink data of the functional module.

[0052] In some embodiments, the electric chip is configured to implement transmission control of the optical signals, including control of signal modulation and photoelectric conversion.

[0053] In some embodiments of the present disclosure, the silicon optical chip is configured to perform at least one of modulating optical signals or transceiving optical signals, the electric chip is configured to implement transmission control of the optical signals, and the silicon optical chip and the electric chip cooperate to implement optical communication.

[0054] In some embodiments, 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, the first optical signal carrying uplink data sent by the functional module to other devices.

[0055] In some embodiments, the silicon optical chip includes an optical modulation unit and an optical receiving unit. The optical modulation unit is configured to modulate a first optical carrier received from an optical transmission channel to obtain a first optical signal. The optical 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.

[0056] 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 optical receiving unit and performs photoelectric conversion on the second optical signal to obtain a 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.

[0057] In some embodiments, the optical receiving unit and the optical modulation unit can be discrete or integrated.

[0058] In some embodiments, the optical receiving unit can be a silicon-based silicon germanium process photodiode (PIN) or avalanche photodiode detector (APD), or a III-V semiconductor-based PIN or APD.

[0059] In some embodiments, the optical modulation unit can be a silicon-based optical modulation unit or a lithium niobate-based optical modulation unit.

[0060] In some embodiments of the present disclosure, the silicon optical chip includes an optical modulation unit or an optical modulation unit and an optical receiving unit, which can realize reception and modulation of optical signals, and through silicon optical technology, the reliability of optical communication can be improved.

[0061] In some embodiments, the silicon optical chip further comprises an optical switch configured to turn on or turn off the optical transmission channel and the optical modulation unit.

[0062] In some embodiments, as shown in FIG. 2, the silicon optical chip 20 comprises an optical receiving unit 201, an optical modulation unit 202 and an optical switch 203.

[0063] The optical switch 203 can be turned on to the first end ① or the second end ②. The first end is connected with the optical modulation unit 202, and the second end is connected with the optical switch of the next optical communication circuit device. It can be understood that the second end is connected with the optical transmission channel, and the second end is connected with the optical switch of the next optical communication circuit device through the optical transmission channel.

[0064] In the case that the functional module transmits uplink data, the first end of the optical switch is connected with the optical modulation unit 202. When the optical switch is turned on to the first end, the optical carrier can reach the optical modulation unit 202, and 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.

[0065] In the case that the functional module does not transmit uplink data, the optical switch is turned on to the second end, so that the optical carrier reaching the silicon optical chip is directly transmitted into the optical transmission channel without modulation.

[0066] In some embodiments, the optical switch of the other optical communication circuit device is turned on 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.

[0067] In some embodiments, the switching time of the optical switch is less than 10us.

[0068] In some embodiments, the optical switch comprises one of the following: a thermal modulation optical switch and an electrical modulation optical switch.

[0069] It should be noted that a plurality of optical communication circuit devices can form a ring optical network, and the power budget of the entire ring optical network is limited, thereby limiting the number of optical communication circuit devices. The purpose of the setting of the optical switch in each silicon optical chip is mainly to avoid that the optical signal which does not need to be modulated will cause a large loss after being modulated by the optical modulation unit. Through the setting of the optical switch, the optical signal which does not need to be modulated is transmitted to the next optical communication circuit device through the silicon optical waveguide, thereby reducing the loss caused by the silicon optical chip.

[0070] In some embodiments of the present disclosure, the silicon optical chip comprises an optical switch. By setting the optical switch, an optical signal that needs to be modulated can enter the optical modulation unit, and an 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.

[0071] In some embodiments, the silicon optical chip satisfies at least one of the following: the silicon optical chip comprises a first optical transmitting unit and an optical receiving unit, the first optical transmitting unit is configured to send a first optical carrier to an optical transmission channel, the optical receiving unit is configured to receive 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; or the silicon optical chip comprises a second optical transmitting unit, and the second optical transmitting unit is configured to emit a second optical carrier to an optical transmission channel, and the second optical carrier carries downlink data.

[0072] In some embodiments, the silicon optical chip provides an optical source for uplink data, and the silicon optical chip comprises a first optical transmitting unit and an optical receiving unit.

[0073] For example, the first optical transmitting unit sends a first optical carrier to an optical transmission channel, and a functional module can obtain the first optical carrier from the optical transmission channel, modulate the first optical carrier based on uplink data to obtain a first optical signal. The optical receiving unit is configured to receive the first optical signal from the optical transmission channel, and the first optical signal carries uplink data.

[0074] In some embodiments, the silicon optical chip provides an optical source for downlink data, and the silicon optical chip comprises a second optical transmitting unit, and the second optical transmitting unit is configured to emit a second optical signal to an optical transmission channel, and the second optical signal carries downlink data.

[0075] It can be understood that the second optical transmitting unit emits a second optical carrier, modulates the second optical carrier based on downlink data to obtain a second optical signal, and emits the second optical signal to the optical transmission channel.

[0076] In some embodiments, the silicon optical chip provides an optical source for uplink and downlink data, i.e., the silicon optical chip comprises a first optical transmitting unit and an optical receiving unit, and further comprises a second optical transmitting unit. Referring to FIG. 3, the silicon optical chip 20 comprises a first optical transmitting unit 301, an optical receiving unit 201, and a second optical transmitting unit 302.

[0077] The first optical transmitting unit 301 transmits a first optical carrier to an optical transmission channel. A functional module can obtain the first optical carrier from the optical transmission channel, modulate the first optical carrier based on uplink data, and obtain a first optical signal. The optical 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 optical transmitting unit 302 is configured to transmit a second optical signal to the optical transmission channel, and the second optical signal carries downlink data.

[0078] In some embodiments of the present disclosure, the silicon optical chip includes an optical transmitting device, which can provide a light source for transmission of at least one of uplink data or downlink data, and realize optical communication between the functional module and other devices.

[0079] In some embodiments, the electronic chip includes an optoelectronic signal driving module, a processing module, and a Media Access Control-Physical Layer Chip (MAC-PHY) chip. The optoelectronic signal driving module is configured to output a driving signal for controlling signal modulation and optoelectronic conversion in the silicon optical chip. The processing module is configured to implement digital signal processing. The MAC-PHY chip is configured to implement data link layer and physical layer protocol processing.

[0080] It can be understood that the electronic chip refers to a control chip of electrical signals, which is configured to implement functions such as optoelectronic signal driving, digital signal processing, interface and protocol support. The electronic chip controls signal modulation and optoelectronic conversion in the silicon optical chip through the optoelectronic signal driving module.

[0081] 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.

[0082] In some embodiments, the electronic chip can also implement power adjustment of optical signals.

[0083] The electronic chip implements data link layer and physical layer protocol processing through the MAC-PHY chip, providing communication interfaces 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.

[0084] In some embodiments of the present disclosure, the electronic chip implements 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.

[0085] In some embodiments, the optical communication circuit device satisfies at least one of the following: the optical communication module and the functional module are integrated on the same board card, or the optical communication circuit device is a circuit board or an integrated circuit.

[0086] As shown in FIG. 4, the optical communication module 101 includes a silicon optical chip 20 and an electrical chip 30. The silicon optical chip 20 includes an optical receiving unit 201, an optical modulation unit 202, and an optical switch 203. The electrical chip 30 includes a processing module 401, an optical-electrical signal driving module 402, and a MAC-PHY chip 403.

[0087] It can be understood that some embodiments of the present disclosure use silicon optical integration technology 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 achieved, for example, the high integration of the optical receiving unit and the optical modulation unit with the intelligent sensor or the control unit, and the reliability of the optical communication can be improved.

[0088] In some embodiments of the present disclosure, by integrating the optical communication module and the functional module on the same board card, the reliability of the optical communication can be improved.

[0089] Some embodiments of the present disclosure also provide a vehicle-mounted optical communication system, as shown in FIG. 5, 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.

[0090] The first optical communication device 501 is connected with the optical transmission channel 503, and the N second optical communication devices 502 are each connected with the optical transmission channel 503.

[0091] For example, N is a positive integer greater than or equal to 1, and the N second optical communication devices can include the second optical communication device 1, the second optical communication device i, …, to the second optical communication device N shown in FIG. 5. The second optical communication device i is any one of the N second optical communication devices.

[0092] It should be noted that in some embodiments of the present disclosure, the structure and function of each of the N second optical communication devices are similar, and in order to avoid redundancy, some embodiments of the present disclosure take any one of the N second optical communication devices (i.e., the second optical communication device i in the foregoing) as an example to describe the structure and working principle of the N second optical communication devices provided by some embodiments of the present disclosure.

[0093] 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.

[0094] It can be understood that the first optical communication device 501 transmits 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 the at least one of the N second optical communication devices can generate a first optical signal based on the corresponding first optical carrier modulation, and the first optical communication device provides optical carriers for uplink data transmission of the N second optical communication devices.

[0095] In order to facilitate the description of signal transmission in different directions, in some embodiments of the present disclosure, 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 disclosure.

[0096] The 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 modulation, and transmit the first optical signal i to the optical transmission channel.

[0097] In some embodiments, 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.

[0098] It can be understood that the second optical communication device i in the N second optical communication devices transmits uplink data to the first optical communication device through wavelength division by receiving the first optical carrier i matched with the second optical communication device i from the optical transmission channel, modulating the first optical carrier i to generate the first optical signal i based on the uplink data, thereby realizing parallel transmission of uplink data, 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 a vehicle-mounted communication scenario.

[0099] In the case where M is less than N, the N second optical communication devices include at least two second optical communication devices receiving the same wavelength of the first optical carrier. The at least two second optical communication devices use the first optical carrier with the same wavelength to generate the first optical signal with the same wavelength, i.e., the at least two second optical communication devices use the first optical carrier with the same wavelength.

[0100] It should be noted that, in order to avoid interference, 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, that is, at least two second optical communication devices using the same wavelength of the first optical carrier transmit uplink data to the first optical communication device in a time-division manner, that is, at this time, the uplink transmission adopts wavelength division multiplexing + time division.

[0101] In some embodiments, 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.

[0102] The vehicle-mounted optical communication system provided by some embodiments of the present disclosure 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, and the second optical communication device i in 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.

[0103] On the one hand, the vehicle-mounted optical communication system is based on optical transmission, which not only can utilize the high-speed data stream formed by the optical carrier to meet the high-bandwidth communication demand, but also 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, so that the high-temperature environment in the vehicle 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 the vehicle communication scene.

[0104] In some embodiments, 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.

[0105] It can be understood that the first optical communication device can receive the first optical signal sent by the second optical communication device, optoelectronically convert the first optical signal to obtain a first electrical signal, thereby realizing the transmission of uplink data from the second optical communication device to the first optical communication device.

[0106] In some embodiments, the first optical communication device comprises an optical transmitting module configured to transmit the first optical carrier, and a first optical receiving unit configured to receive the first optical signal i from the optical transmission channel.

[0107] In some embodiments, the optical transmitting module comprises M first optical transmitting units configured to transmit M first optical carriers to the optical transmission channel, the M first optical carriers comprising the first optical carrier i.

[0108] It can be understood that each first optical transmitting unit transmits a first optical carrier of one wavelength to the optical transmission channel. Different first optical transmitting units generate first optical carriers of different wavelengths.

[0109] The first optical transmitting unit can be a laser device, i.e., a light source, each light source generating a first optical carrier of one wavelength.

[0110] In some embodiments, the first optical communication device further comprises a demultiplexer, an input end of the demultiplexer being connected to the optical transmission channel, an output end of the demultiplexer being connected to the first optical receiving unit, the demultiplexer being configured to separate first optical signals of different wavelengths.

[0111] In some embodiments of the present disclosure, 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.

[0112] In some embodiments, the optical transmitting module further comprises a second optical transmitting unit, the second optical transmitting unit comprising a first light source configured to transmit a second optical carrier, and a second optical modulation unit configured to modulate the second optical carrier to obtain a second optical signal, and transmit the second optical signal to the optical transmission channel, the second optical signal carrying downlink data.

[0113] 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, i.e., the optical transmitting module further comprises a second optical transmitting unit, the second optical transmitting unit comprising a first light source and a second optical modulation unit, the second optical modulation unit being connected to the first light source, the first light source transmitting a second optical carrier, the second optical carrier entering the second optical modulation unit, the second optical 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.

[0114] It should be noted that in actual work, the optical signal transmission of the entire vehicle-mounted optical communication system includes two parts: one is the downlink signal transmission from the first optical communication device to the second optical communication device; and the other is the 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.

[0115] In some embodiments, the wavelength of the first light source ranges from 380 nm to 1600 nm.

[0116] In some embodiments, the wavelength of the first optical carrier i can be the same as or different from the wavelength of the second optical carrier.

[0117] The first optical carrier and the second optical carrier are independent carriers. The second optical carrier is modulated and then transmitted to the optical transmission channel, and does not interfere with the first optical carrier that is not modulated. Therefore, the wavelength of the first optical carrier can be the same as or different from the wavelength of the second optical carrier.

[0118] The first optical communication device provides the first optical carrier that is not modulated for the uplink data through the first optical transmitting unit. The first optical communication device transmits the second optical carrier through the second optical transmitting unit, modulates the second optical carrier based on the downlink data, generates the second optical signal, and transmits 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.

[0119] In some embodiments, the second optical modulation unit includes at least one of a silicon-based optical modulation unit and a lithium niobate-based optical modulation unit.

[0120] In some embodiments of the present disclosure, the first optical communication device provides a light source for uplink and downlink data transmission, realizes optical communication, and has a 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 does not affect the normal operation of the second optical communication device. Since the number of first optical communication devices is small, the influence of the temperature of the vehicle-mounted environment on the optical transmitting module in the first optical communication device can be reduced by conveniently deploying the position of the first optical communication device, thereby ensuring the applicability and practicability of the vehicle-mounted optical communication system in a vehicle-mounted communication scenario.

[0121] 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.

[0122] In some embodiments, the light emitting module is arranged at the periphery of the central computing platform area of the vehicle, and is cooled by a cooling module, the cooling module comprising at least one of a thermoelectric cooler (TEC) arranged at the periphery of the area where the light emitting module is arranged or a water cooling system of the vehicle.

[0123] By arranging at least one of the TEC arranged at the periphery of the area where the light emitting module is arranged or the water cooling system of the vehicle, the light emitting module in the first optical communication device is cooled, so that the influence of the vehicle-mounted environment temperature on the light emitting module in the first optical communication device can be effectively reduced, the optical power attenuation of the light emitting module is avoided, the service life of the light emitting module is improved, and the applicability and practicability of the vehicle-mounted optical communication system in the vehicle-mounted communication scene are ensured.

[0124] In some embodiments, 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, and the first optical signal carries uplink data.

[0125] It can be understood that the second optical communication device i modulates the first optical carrier i based on the uplink data through the silicon optical chip to obtain the first optical signal i.

[0126] In some embodiments, the silicon optical chip comprises an electro-optical modulator and an optical switch. The electro-optical modulator is configured to modulate the first optical carrier i to obtain the first optical signal i. The optical switch is configured to turn on or turn off the optical transmission channel and the electro-optical modulator.

[0127] The optical switch can be turned 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.

[0128] When the optical switch is turned on to the first end, the optical transmission channel is turned on to the electro-optical modulator, and the first optical carrier can enter the electro-optical modulator. When the optical switch is turned on to the second end, the optical transmission channel is turned off to the electro-optical modulator, and the first optical carrier will not enter the electro-optical modulator.

[0129] In some embodiments of the present disclosure, the silicon optical chip comprises an optical switch. By arranging 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.

[0130] In some embodiments, the silicon photonic chip further comprises: an optical receiver. The optical receiver receives a second optical signal from the optical transmission channel, the second optical signal carrying downlink data.

[0131] In the foregoing embodiments, the first optical communication device modulates the second optical carrier based on the downlink data through the second optical transmitting unit, generates a second optical signal, and transmits the second optical signal to the optical transmission channel, the second optical signal carrying downlink data, that is, the second optical transmitting unit transmits a modulated optical signal to the optical transmission channel. Correspondingly, the silicon photonic chip of the second optical communication device further comprises an optical receiver, which receives the second optical signal from the optical transmission channel and performs photoelectric conversion on the second optical signal to obtain a second electrical signal.

[0132] 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 some embodiments of the present disclosure can refer to the description of the foregoing optical communication circuit device, which will not be described here.

[0133] In some embodiments, the electrical chip comprises: an optoelectronic signal driving module, a processing module, and a MAC-PHY chip.

[0134] For example, the optoelectronic signal driving module is configured to output a driving signal for controlling signal modulation and photoelectric conversion in the silicon photonic chip. The processing module is configured to implement digital signal processing. The MAC-PHY chip is configured to implement data link layer and physical layer protocol processing.

[0135] It can be understood that the electrical chip refers to an electrical signal control chip, which is configured to implement optoelectronic signal driving, digital signal processing, interface and protocol support, etc.

[0136] The electrical chip controls signal modulation and photoelectric conversion in the silicon photonic chip through the optoelectronic signal driving module.

[0137] The electrical 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.

[0138] In some embodiments, the electrical chip can also implement power adjustment of the optical signal.

[0139] The electrical 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.

[0140] In some embodiments, the MAC-PHY chip can share a chip in an optical network unit (ONU) in a passive optical network (PON) architecture, thereby reducing costs.

[0141] In some embodiments of the present disclosure, the electrical chip drives the uplink signal and the downlink signal through the optoelectronic signal driving module, the processing module, and the MAC-PHY chip, thereby improving the reliability of optical communication.

[0142] In some embodiments, the processing module is further configured to, in a case where it is detected that the functional module sends 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; and in a case where it is not detected that the functional module sends uplink data to the first optical communication device, 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 pass through the optical transmission channel to the next second optical communication device 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 operating.

[0143] In some embodiments of the present disclosure, the processing module controls the turning on or turning off of the optical switch in the silicon optical chip and controls the optoelectronic signal driving module to output a driving signal based on whether the functional module has uplink data to send, so as to make the electro-optical modulator work or stop working, thereby achieving control of signal modulation, reducing the loss of optical carriers, and improving communication quality.

[0144] In some embodiments, 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.

[0145] It should be noted that, in some embodiments of the present disclosure, the second communication device receives the second optical signal from the optical transmission channel, and then performs optoelectronic conversion on the second optical signal to obtain the second electrical signal.

[0146] The second optical signal is generated by modulating the second optical carrier based on the downlink data by the first communication device, and in some embodiments of the present disclosure, the first communication device sends the second optical signal in the form of broadcasting.

[0147] In some embodiments, the second optical signal is broadcast to the N second optical communication devices by a splitter, and a parameter of the splitter is 1:N. For example, the splitter is a passive optical device, which is a 1:N splitter, and N is equal to the number of the second optical communication devices.

[0148] The N second optical communication devices receive the second optical signal by broadcasting, and perform photoelectric conversion on the second optical signal to obtain a second electrical signal. Whether the corresponding information needs to be processed is determined by the identification information in the second electrical signal. If the identification information of the second optical communication device i in 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, responds to the second electrical signal, and performs corresponding operations, thereby completing the downlink transmission between the first optical communication device and the second optical communication device i. If the identification information of the second optical communication device i in the N second optical communication devices does not match the identification information in the second electrical signal, the second optical communication device i does not process the second electrical signal.

[0149] The vehicle-mounted optical communication system provided by some embodiments of the present disclosure 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.

[0150] In some embodiments, the second optical communication device i in the N second optical communication devices further includes a filter configured to obtain a first optical carrier i matching the second optical communication device i from the M first optical carriers and transmit the first optical carrier i to the electro-optical modulator.

[0151] 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.

[0152] 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).

[0153] In some embodiments, the filters of the N second optical communication devices correspond to different wavelength bands.

[0154] In some embodiments, the electro-optical modulator can be a silicon-based modulator or a lithium niobate-based modulator.

[0155] In some embodiments, referring to FIG. 6, the second optical communication device includes ONU1, …, ONUi, …, and the first communication device includes OLT. The entire ring optical network signal transmission consists of two parts: a downlink signal from the first optical communication device to the second optical communication device and an uplink signal from the second optical communication device to the first optical communication device; for example, the uplink and downlink use two independent light sources, and the uplink and downlink can work simultaneously.

[0156] In the downlink transmission scheme: the downlink uses a second optical transmitting unit 302 with a wavelength range of 380nm-1600nm, the second optical transmitting unit 302 emits a second optical carrier, and after passing through a second optical modulation unit, it is broadcast to different ONU units through a splitter 601; for example, the splitter is a passive optical device, which is a 1:N splitter, for example, N is equal to the number of ONU terminals.

[0157] In this way, the light is transmitted to the optical receiving unit 201 in the ONU, and photoelectric signal conversion is performed, and the ONU terminal receives the signal in a broadcast manner, so that it can be determined whether to process the corresponding information through the ID in the signal, and the downlink signal transmission is completed.

[0158] In the uplink signal transmission scheme: the OLT is integrated around the vehicle central computing platform, and LD1, …, LDi are continuous laser source signals, the wavelengths of the laser source signals are λ1, …, λi, …, and the range is 380nm-1600nm, the wavelengths of the laser source signals can be the same as or different from the wavelengths of the second optical carriers.

[0159] The first optical transmitting unit 301 of the OLT generates M first optical carriers with different wavelengths, sends the M first optical carriers with different wavelengths to the optical transmission channel, and each of the M first optical 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 optical carrier modulation, send the first optical signal to the optical transmission channel, and the first optical signal carries uplink data. The first optical signal is divided into first optical signals sent by each second optical communication device through a demultiplexer 602, and the optical receiving unit 201 receives each first optical signal and performs photoelectric conversion on each first optical signal.

[0160] In some embodiments, the transmission time of each second optical communication device is t (t1-tn), for example, the range of t is 125±100us.

[0161] When the M first optical carriers pass through the ONU 1, for example, the optical switch of the silicon optical chip is modulated to ①, there is an uplink signal to be transmitted in the ONU 1, the ONU 1 acquires the first optical carrier 1 matched therewith, 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 ②, and the transmission is performed to the first optical receiving unit in the OLT to realize the conversion from the optical signal to the electrical signal, and complete the transmission of the uplink signal.

[0162] 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 through the electrical driving chip to complete the transmission of the uplink signal. For example, the first optical carrier passes through n-1 ONUs (n≥2) before the nth ONU, and the optical switches in the first n-1 ONUs are all turned on to the second end ②.

[0163] For example, the setting of the optical switch in each silicon optical chip mainly avoids that the light passing through the modulator without modulation will cause a large loss, which will seriously affect the power budget of the ring optical network and limit the number of ONUs in the ring optical network.

[0164] In some embodiments, the optical transmission channel includes M optical channels, each of which is configured to transmit one of the M first optical carriers.

[0165] It can be understood that the optical transmitting module includes a first optical transmitting unit configured to emit M first optical carriers with different wavelengths. In order to emit M first optical carriers with different wavelengths, M light sources are needed to form M optical channels, each of which 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.

[0166] In this way, different second optical communication devices can use the respective corresponding 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.

[0167] In some embodiments, the optical transmission channel includes K optical channels, each of which is configured to transmit at least one of the M first optical carriers, and K is a positive integer and K is less than M.

[0168] 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.

[0169] It should be noted that when M = 1, for uplink signal transmission, different second optical communication devices use a time-division transmission scheme.

[0170] In some embodiments of the present disclosure, 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.

[0171] As shown in FIG. 7, the vehicle-mounted optical communication method includes steps 710-750.

[0172] Step 710: The first optical communication device generates M first optical carriers, the M first optical carriers having different wavelengths.

[0173] Step 720: The first optical communication device transmits the M first optical carriers to N second optical communication devices through an optical transmission channel.

[0174] Each of the M first optical carriers corresponds to at least one of the N second optical communication devices, and a first optical carrier i in the M first optical carriers is modulated by a corresponding second optical communication device i to generate a first optical signal i, the second optical communication device i being any one of the N second optical communication devices, N and M being positive integers greater than or equal to 1, and M being less than or equal to N.

[0175] Step 730: 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.

[0176] 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.

[0177] Step 750: The second optical communication device i transmits the first optical signal i to the optical transmission channel, the first optical signal being obtained by modulating the first optical carrier i, and the first optical signal carrying uplink data.

[0178] For example, the optical transmission channel transmits M first optical carriers, the M first optical carriers have different wavelengths, and the M first optical carriers are configured to be received by N second optical communication devices, and the second optical communication device i is any one of the N second optical communication devices.

[0179] The vehicle-mounted optical communication method provided by some embodiments of the present disclosure 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 first optical signals carrying uplink data through the first optical communication device, and has high communication rate and good communication quality based on optical communication.

[0180] In some embodiments, a first optical carrier j in the M first optical carriers is modulated by a corresponding second optical communication device j1 to generate a first optical signal j1, and is configured to be modulated by a second optical communication device j2 to generate a first optical signal j1.

[0181] 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 uses wavelength division multiplexing + time division at this time.

[0182] In some embodiments, the method further comprises: receiving, by the first optical communication device, the first optical signal i from the optical transmission channel.

[0183] In some embodiments, as shown in FIG. 8, the method further comprises steps 760-790.

[0184] Step 760, the first optical communication device emits a second optical carrier, modulates the second optical carrier to obtain a second optical signal.

[0185] Step 770, broadcasting the second optical signal to the optical transmission channel, the second optical signal carrying downlink data.

[0186] Step 780, the second optical communication device i receives the second optical signal and performs photoelectric conversion on the second optical signal to obtain a second electrical signal.

[0187] Step 790, the second optical communication device i determines whether to process the corresponding information through the identification information in the second electrical signal.

[0188] If the identification information of the second optical communication device i in 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.

[0189] It should be noted that some embodiments of the present disclosure do not limit the order between steps 710-770.

[0190] Thus, the downlink transmission between the first optical communication device and the second optical communication device i is completed.

[0191] If the identification information of the second optical communication device i in 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.

[0192] In some embodiments, the first optical communication device includes an optical transmission module and a first optical receiving unit, the optical transmission 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.

[0193] In some embodiments, the optical transmission module includes M first optical transmission units, the M first optical transmission units are configured to send the M first optical carriers to the optical transmission channel, and the M first optical carriers include the first optical carrier i.

[0194] In some embodiments, the first optical communication device further includes a demultiplexer, an input end of the demultiplexer is connected to the optical transmission channel, an output end of the demultiplexer is connected to the first optical receiving unit, and the demultiplexer is configured to separate first optical signals of different wavelengths.

[0195] In some embodiments, the optical transmission module further includes a second optical transmission unit, the second optical transmission unit includes a first light source configured to emit a second optical carrier, and a second optical modulation unit configured to modulate the second optical carrier to obtain a second optical signal, send the second optical signal to the optical transmission channel, and the second optical signal carries downlink data.

[0196] In some embodiments, the first optical communication device is the optical communication circuit device of the foregoing embodiments.

[0197] In some embodiments, the optical transmission channel includes M optical channels, each of the optical channels is configured to transmit one of the M first optical carriers.

[0198] In some embodiments, the optical transmission channel comprises K optical channels, each of the optical channels is configured to transmit at least one of the M first optical carriers, K is a positive integer, K is less than M.

[0199] In some embodiments, 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 carries uplink data.

[0200] In some embodiments, the silicon optical chip comprises an electro-optical modulator and an optical switch.

[0201] The electro-optical modulator is configured to modulate the first optical carrier i to obtain the first optical signal i; the optical switch is configured to turn on or turn off the optical transmission channel and the electro-optical modulator.

[0202] In some embodiments, the silicon optical chip further comprises an optical receiver. The optical receiver receives a second optical signal from the optical transmission channel, the second optical signal carries downlink data.

[0203] In some embodiments, the second optical communication device is the optical communication circuit device described in the foregoing embodiments.

[0204] In some embodiments, the electronic chip comprises an optical signal driving module, a processing module and a MAC-PHY chip.

[0205] For example, the optical signal driving module is configured to output a driving signal for controlling signal modulation and photoelectric conversion in the silicon optical chip; the processing module is configured to implement digital signal processing; and the MAC-PHY chip is configured to implement data link layer and physical layer protocol processing.

[0206] In some embodiments, the processing module is further configured to, in a case where it is detected that the functional module sends 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 signal driving module is configured to output a first driving signal to drive the electro-optical modulator in the silicon optical chip to operate; and in a case where it is not detected that the functional module sends uplink data to the first optical communication device, control the optical switch in the silicon optical chip to turn on to a second end, so as to make the first optical carrier pass through the optical transmission channel to a next second optical communication device without modulation, and the optical 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.

[0207] 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 of the second optical signal.

[0208] In some embodiments, the second optical communication device i of the N second optical communication devices further comprises a filter configured to obtain a first optical carrier i matching the second optical communication device i from the M first optical carriers and transmit the first optical carrier i to the electro-optical modulator.

[0209] In some embodiments, the optical transmission channel comprises M optical channels, each of the optical channels being configured to transmit one of the M first optical carriers.

[0210] In some embodiments, 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.

[0211] For understanding of the corresponding content in the vehicle-mounted optical communication method in some embodiments of the present disclosure, reference can be made to the related description in the foregoing vehicle-mounted optical communication system embodiments, which will not be repeated here.

[0212] The vehicle-mounted optical communication method provided by some embodiments of the present disclosure connects the first optical communication device and the N second optical communication devices through the optical transmission channel, the first optical communication device transmits the 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 matching first optical carrier i from the optical transmission channel, generates the 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 the optical transmission between the first optical communication device and the N second optical communication devices.

[0213] On one hand, the vehicle-mounted optical communication system is based on optical transmission, which not only utilizes the high-speed data stream formed by the optical carriers to meet the high-bandwidth communication demand, but also 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 carriers for the second optical communication devices, so that there is no need to set up light sources in each second optical communication device, and thus 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.

[0214] In some embodiments, as shown in FIG. 9, some embodiments of the present disclosure further provide a first optical communication device 501 comprising a processor 901 and a memory 902 connected with the processor 901, the memory 902 storing a computer program, and the processor 901 implements each process of the foregoing vehicle-mounted optical communication method embodiment on the first optical communication device side when executing the program, and achieves the same technical effects. To avoid repetition, details are not repeated here.

[0215] In some embodiments, as shown in FIG. 10, the second optical communication device 502 according to some embodiments of the present disclosure also includes a processor 901 connected with a memory 902, and the memory 902 stores a computer program, and the processor implements the processes of the vehicle-mounted optical communication method according to the foregoing embodiments of the second optical communication device, and achieves the same technical effects. For the sake of brevity, the same will not be repeated here.

[0216] Some embodiments of the present disclosure also provide an optical communication system, as shown in FIG. 11, the optical communication system 1100 includes the first optical communication device 501 according to the foregoing embodiments and the second optical communication device 502 according to the foregoing embodiments.

[0217] Some embodiments of the present disclosure also provide a vehicle, as shown in FIG. 12, the vehicle 1000 includes the optical communication circuit device 10 according to the foregoing embodiments, or includes the vehicle-mounted optical communication system 50 according to the foregoing embodiments, or includes the optical communication device 501 and 502 according to the foregoing embodiments, or includes the optical communication system 1100 according to the foregoing embodiments.

[0218] For the understanding of the vehicle 1000, please refer to the description in the foregoing embodiments, which will not be repeated here.

[0219] Some embodiments of the present disclosure also provide a non-transitory computer readable storage medium, and the non-transitory computer readable storage medium stores a computer program, and the computer program is executed by a processor to implement the processes of the vehicle-mounted optical communication method according to the foregoing embodiments, and achieves the same technical effects. For the sake of brevity, the same will not be repeated here.

[0220] For example, the processor is the processor in the optical communication device according to the foregoing embodiments. The readable storage medium includes 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.

[0221] Some embodiments of the present disclosure also provide a computer program product, including a computer program, and the computer program is executed by a processor to implement the vehicle-mounted optical communication method according to the foregoing embodiments.

[0222] For example, the processor is the processor in the optical communication device according to the foregoing embodiments. The readable storage medium includes 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.

[0223] Some embodiments of the present disclosure further provide a chip, which comprises a processor and a communication interface, the communication interface and the processor are coupled, the processor is configured to run programs or instructions, realize various processes of the above vehicle-mounted optical communication method embodiments, and achieve the same technical effects. To avoid repetition, details are not described here.

[0224] It should be understood that the chip mentioned in some embodiments of the present disclosure can also be referred to as a system-level chip, a system chip, a chip system, or a system-on-chip, etc.

[0225] It should be noted that in this document, the terms "comprising", "containing" or any other variant thereof are 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.

[0226] Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0227] In addition, it should be noted that the scope of the methods and devices in some embodiments of the present disclosure is not limited to performing functions in the order shown or discussed, but can also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method can be performed in an order different from the described order, and various steps can also be added, omitted or combined. In addition, the features described with reference to certain examples can be combined in other examples.

[0228] From the above description of the embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be realized by means of software and necessary general hardware platforms, of course, they 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 disclosure 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 equipment, etc.) execute the methods described in various embodiments of the present disclosure.

[0229] The embodiments of the present disclosure are described above in combination with the drawings, but the present disclosure is not limited to the above specific embodiments, which are only illustrative and not restrictive. Those skilled in the art can make many forms without departing from the purpose of the present disclosure and the scope protected by the claims under the inspiration of the present disclosure, which all belong to the protection of the present disclosure.

[0230] In the description of the present specification, the description of the terms "some embodiments", "an example", or "some examples" or the like means that the 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 disclosure. In the present specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Also, the described features, structures, materials or characteristics can be combined in an appropriate manner in any one or more embodiments or examples.

[0231] Although the embodiments of the present disclosure have been shown and described, it will be understood by those having ordinary skill in the art that various changes, modifications, alternatives and variations can be made thereto without departing from the principles and spirit of the present disclosure, the scope of which is defined by the claims and their equivalents.

Claims

1. An optical communication circuit device, integrated with an optical communication module and a functional module, the optical communication module is configured to implement optical communication between the functional module and other devices, the functional module implements a function different from the function of the optical communication module.

2. The optical communication circuit arrangement of claim 1, wherein, The optical communication module includes a silicon optical chip and an electrical chip, the silicon optical chip is configured to perform at least one of modulating an optical signal or transceiving an optical signal, and the electrical chip is configured to implement transmission control of the optical signal.

3. The optical communication circuit device of claim 2, wherein 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 the silicon optical chip includes the optical modulation unit and an optical receiving unit, the optical receiving unit is configured to receive a second optical signal and perform photoelectric conversion on the second optical signal to obtain a second electrical signal; the second optical signal carries downlink data.

4. The optical communication circuit arrangement of claim 3, wherein, The silicon optical chip further comprises an optical switch; the optical switch is configured to be connected to a first end when the functional module transmits uplink data, and to be connected to a second end when the functional module does not transmit uplink data, the first end is connected to the optical modulation unit, and the second end is connected to an optical switch of a next optical communication circuit device.

5. The optical communication circuit arrangement of claim 2, wherein, The silicon optical chip satisfies at least one of the following conditions: the silicon optical chip includes a first optical transmitting unit and an optical receiving unit; the first optical transmitting unit is configured to transmit a first optical carrier to an optical transmission channel, and the optical receiving unit is configured to receive 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; or the silicon optical chip includes a second optical transmitting unit configured to transmit a second optical signal to an optical transmission channel, the second optical signal carries downlink data.

6. The optical communication device of any of claims 3-5, wherein, The optical receiving unit includes one of the following: a PIN or avalanche photodiode detector APD photoelectric receiver based on a silicon-based germanium process; and a PIN or avalanche photodiode detector APD photoelectric receiver based on a III-V semiconductor; The optical modulation unit includes one of the following: a silicon-based optical modulation unit; and a lithium niobate-based optical modulation unit; The optical switch includes one of the following: a thermal modulation optical switch; and an electrically modulated optical switch. The electrical chip includes:

7. The optical communication circuit arrangement according to any of claims 2-6, wherein, an optoelectronic signal driving module configured to output a driving signal for controlling signal modulation and photoelectric conversion in the silicon optical chip; a processing module configured to implement digital signal processing; and a combination of a media access control sublayer and a physical layer MAC-PHY chip configured to implement data link layer and physical layer protocol processing.

8. The optical communication circuit device of any one of claims 1-7, satisfying at least one of the following conditions: the optical communication module and the functional module are integrated on the same board; or ​ The optical communication circuit device is a circuit board or an integrated circuit.

9. A vehicle-mounted optical communication system, comprising: The first optical communication device, the N second optical communication devices, and the optical transmission channel; The first optical communication device is connected with the optical transmission channel, and each of the N second optical communication devices is connected with the optical transmission channel; 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; The i-th second optical communication device of the N second optical communication devices is configured to receive a first optical carrier i matched with the i-th second optical communication device from the optical transmission channel, generate a first optical signal i by modulating 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, wherein The N second optical communication devices include at least two second optical communication devices capable of receiving first optical carriers with the same wavelength.

11. The vehicle-mounted optical communication system according to claim 9, wherein 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 of claim 9, wherein, The first optical communication device includes an optical transmitting module configured to emit the first optical carriers and a first optical receiving unit configured to receive the first optical signal i from the optical transmission channel.

13. The vehicle-mounted optical communication system of claim 12, wherein, The optical transmitting module includes M first optical transmitting units configured to send the M first optical carriers to the optical transmission channel; the M first optical carriers include the first optical carrier i.

14. The vehicle-mounted optical communication system of claim 13, wherein, The first optical communication device further includes an optical demultiplexer, an input end of the optical demultiplexer is connected with the optical transmission channel, an output end of the optical demultiplexer is connected with the first optical receiving unit, and the optical demultiplexer is configured to separate first optical signals with different wavelengths.

15. The vehicle-mounted optical communication system of claim 13, wherein, The optical transmitting module further includes a second optical transmitting unit. The second optical transmitting unit includes: a first light source configured to emit second optical carriers; and a second optical modulation unit configured to modulate the second optical carriers to obtain second optical signals and send the second optical signals to the optical transmission channel; the second optical signals carry downlink data.

16. The vehicle-mounted optical communication system according to any one of claims 13-15, wherein, 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, wherein, The i-th second optical communication device includes a silicon optical chip configured to modulate the first optical carrier i to obtain the first optical signal i; the first optical signal carries uplink data.

18. The vehicle-mounted optical communication system of claim 17, wherein, The silicon optical chip includes: an electro-optical modulator configured to modulate the first optical carrier i to obtain the first optical signal i; and an optical switch configured to turn on or turn off the optical transmission channel and the electro-optical modulator.

19. The vehicle-mounted optical communication system of claim 18, wherein, The silicon optical chip further includes: an optical receiver configured to receive second optical signals from the optical transmission channel; the second optical signals carry downlink data.

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

21. The vehicle-mounted optical communication system of claim 20, wherein, The electrical chip comprises: An optoelectronic signal driving module configured to output a driving signal for controlling signal modulation and optoelectronic conversion in the silicon optical chip; A processing module configured to implement digital signal processing; and A MAC-PHY chip combined with a media access control sublayer and a physical layer, configured to implement data link layer and physical layer protocol processing.

22. The vehicle-mounted optical communication system of claim 21, wherein, The processing module is further configured to: In a case where it is detected that the functional module sends uplink data to the first optical communication device, control an optical switch in the silicon optical chip to be turned on to a first end, so as to transmit the first optical carrier to an electro-optical modulator in the silicon optical chip; wherein 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; and In a case where it is not detected that the functional module sends uplink data to the first optical communication device, control the optical switch in the silicon optical chip to be turned on to a 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; 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.

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

24. The vehicle-mounted optical communication system of any of claims 17-23, wherein, 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 matching the second optical communication device i from the M first optical carriers and transmit the first optical carrier i to the electro-optical modulator.

25. The vehicle-mounted optical communication system of any of claims 9-24, wherein, The optical transmission channel comprises M optical channels, each of the M optical channels being configured to transmit one of the M first optical carriers.

26. The vehicle-mounted optical communication system of any of claims 9-24, wherein, The optical transmission channel comprises K optical channels, each of the K optical channels being configured to transmit at least one of the M first optical carriers; wherein K is a positive integer and K is less than M.

27. A vehicle-mounted optical communication method, comprising: A first optical communication device generates M first optical carriers with different wavelengths; And The first optical communication device transmits the M first optical carriers to N second optical communication devices through an optical transmission channel; wherein each of the M first optical carriers corresponds to at least one of the N second optical communication devices, and a first optical carrier i in the M first optical carriers is modulated by 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 both positive integers greater than or equal to 1, and M is less than or equal to N.

28. The method of claim 27, wherein, A first optical carrier j in the M first optical carriers is modulated by a corresponding second optical communication device j1 to generate a first optical signal j1, and is modulated by a second optical communication device j2 to generate a first optical signal j1.

29. The method of claim 27, further comprising: The first optical communication device receives the first optical signal i from the optical transmission channel.

30. The method of claim 27, wherein, The first optical communication device comprises an optical transmitting module and a first optical receiving unit, the optical transmitting 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.

31. The method of claim 30, wherein, The optical transmitting module comprises M first optical transmitting units, the M first optical transmitting 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.

32. The method of claim 31, wherein, The first optical communication device further comprises an optical demultiplexer, an input end of the optical demultiplexer is connected to the optical transmission channel, an output end of the optical demultiplexer is connected to the first optical receiving unit, and the optical demultiplexer is configured to separate first optical signals of different wavelengths.

33. The method of claim 32, wherein, The optical transmitting module further comprises a second optical transmitting unit; the second optical transmitting unit comprises: a first optical source configured to emit a second optical carrier; and a second optical 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; wherein the second optical signal carries downlink data.

34. The method of any one of claims 27-33, wherein, The first optical communication device is the optical communication circuit device according to any one of claims 5-8.

35. The method of any one of claims 27-34, wherein, The optical transmission channel comprises M optical channels, and each of the M optical channels is configured to transmit one of the M first optical carriers.

36. The method of any one of claims 27-34, wherein, The optical transmission channel comprises K optical channels, and each of the K optical channels is configured to transmit at least one of the M first optical carriers; wherein K is a positive integer, and K is less than M.

37. A vehicle-mounted optical communication method, comprising: A second optical communication device i receives a first optical carrier i matched with the second optical communication device from an optical transmission channel; and The second optical communication device i sends a first optical signal i to the optical transmission channel, the first optical signal i is obtained by modulating the first optical carrier i, and the first optical signal i carries uplink data; wherein the optical transmission channel transmits M first optical carriers, the wavelengths of the M first optical carriers are different, and the M first optical carriers are received by N second optical communication devices; 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.

38. The method of claim 37, wherein, 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, and the first optical signal i carries uplink data.

39. The method of claim 38, wherein, The silicon optical chip comprises: an electro-optical modulator configured to modulate the first optical carrier i to obtain the first optical signal i; and an optical switch configured to turn on or turn off the optical transmission channel and the electro-optical modulator.

40. The method of claim 39, wherein, The silicon optical chip further comprises: an optical receiver configured to receive a second optical signal from the optical transmission channel, the second optical signal carrying downlink data.

41. The method of any one of claims 37-40, wherein, 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 of claim 41, wherein, The electronic chip comprises: an optoelectronic signal driving module configured to output a driving signal for controlling signal modulation and optoelectronic conversion in the silicon optical chip; a processing module configured to implement digital signal processing; and a MAC-PHY chip configured to implement data link layer and physical layer protocol processing.

43. The method of claim 42, wherein, The processing module is further configured to: in a case where it is detected that the functional module sends 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 an electro-optical modulator in the silicon optical chip; wherein 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; in a case where it is not detected that the functional module sends uplink data to the first optical communication device, control the optical switch in the silicon optical chip to turn on to a second end, so as to make the first optical carrier not pass through the electro-optical modulator and be transmitted to a next second optical communication device through the optical transmission channel; wherein 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.

44. The method of claim 42, wherein, 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 of the second optical signal.

45. The method of any one of claims 37-44, wherein, The second optical communication device i of the N second optical communication devices further comprises a filter configured to obtain a first optical carrier i matching the second optical communication device i from the M first optical carriers, and transmit the first optical carrier i to the electro-optical modulator.

46. The method of any one of claims 37-45, wherein, The optical transmission channel comprises M optical channels, each of the M optical channels being configured to transmit one of the M first optical carriers.

47. The method of any one of claims 37-45, wherein, The optical transmission channel comprises K optical channels, each of the K optical channels being configured to transmit at least one of the M first optical carriers; wherein K is a positive integer, and K is less than M.

48. An optical communication device comprising a processor connected to a memory, the memory storing a computer program, wherein, The processor, when executing the program, implements the vehicle-mounted optical communication method according to any one of claims 27-36.

49. An optical communication device comprising a processor connected to a memory, the memory storing a computer program, wherein, The processor, when executing the program, implements the vehicle-mounted optical communication method according to any one of claims 37-47.

50. An optical communication system comprising the optical communication device according to claim 48 and the optical communication device according to claim 49.

51. A vehicle comprising the optical communication circuit arrangement according to any one of claims 1-8, or comprising the vehicle-mounted optical communication system according to any one of claims 9-25, or comprising at least one of the optical communication device according to claim 48 or the optical communication device according to claim 49, or comprising the optical communication system according to claim 50.

52. A non-transitory computer-readable storage medium storing a computer program, wherein, The computer program, when executed by a processor, implements the vehicle-mounted optical communication method according to any one of claims 27-36, or the vehicle-mounted optical communication method according to any one of claims 37-47.

53. A computer program product comprising a computer program, wherein, The computer program, when executed by a processor, implements the vehicle-mounted optical communication method according to any one of claims 27-36, or the vehicle-mounted optical communication method according to any one of claims 37-47.

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