Dvcs communication device based on multi-channel driving

Abstract

The application relates to a deep ultraviolet secret light communication device based on multi-channel driving. The deep ultraviolet secret light communication device based on multi-channel driving comprises a transmitting unit, a plurality of light source arrays electrically connected one by one with a plurality of mutually independent driving structures, the driving structure comprising a direct current bias circuit, the light source array comprising a plurality of deep ultraviolet light emitting diodes arranged in an array, the driving structure being used for driving the light source array to emit a first deep ultraviolet light signal to the outside world; and a first focusing unit located on the light emitting surface of the light source array, wherein the first focusing unit comprises a first quartz lens used for converging the first deep ultraviolet light signal emitted by the light source array. The application increases the transmission distance of the first deep ultraviolet light signal, reduces the scattering and loss of the first deep ultraviolet light signal, and improves the performance of the deep ultraviolet secret light communication device based on multi-channel driving.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of optical communication technology, and in particular to a deep ultraviolet secure optical communication device based on multi-channel driving. BACKGROUND

[0002] Optical communication technology is to realize information transmission by controlling the on-off of LED (light-emitting diode). The current most advanced optical communication transmission rate can reach Gb / s. The traditional radio signal transmission equipment has many limitations, for example, it is expensive but not efficient, such as mobile phones. In the world, millions of base stations are built to enhance mobile phone signal transmission, but most of the energy is consumed in equipment cooling, and the energy utilization efficiency is only 5%. In contrast, optical communication technology is essentially to realize information transmission by optical signal, and the required transmission equipment only needs LED, and does not occupy the existing frequency band resources, so it will not interfere with the existing frequency band equipment, so that the optical communication method has good communication quality and security, and is more green and environmentally friendly. As a backup scheme of radio frequency communication, optical communication is more and more valued by colleges and research institutions. However, the current optical communication device has the problems of poor security and short transmission distance, thereby reducing the performance of the optical communication device and limiting the expansion of the application field of the optical communication technology.

[0003] Therefore, how to improve the communication security of the optical communication device, increase the transmission distance of the optical communication device, and thereby improve the performance of the optical communication device, is a technical problem to be solved at present. SUMMARY

[0004] The present application provides a deep ultraviolet secure optical communication device based on multi-channel driving, which is used to improve the communication security of the optical communication device, increase the transmission distance of the optical communication device, improve the performance of the optical communication device, and expand the application field of the optical communication device.

[0005] In order to solve the above problems, the present application provides a deep ultraviolet secure optical communication device based on multi-channel driving, comprising:

[0006] The transmitting unit comprises a plurality of mutually independent driving structures and a plurality of light source arrays electrically connected one by one with the driving structures, the driving structure comprises a direct current bias circuit, the light source array comprises a plurality of deep ultraviolet light-emitting diodes arranged in an array, and the driving structure is used to drive the light source array to emit a first deep ultraviolet light signal to the outside world.

[0007] The first focusing unit is located on the light emitting surface of the light source array, and the first focusing unit comprises a first quartz lens, and the first quartz lens is used to converge the first deep ultraviolet light signal emitted by the light source array.

[0008] Optionally, further comprising:

[0009] a main processing unit connected to the transmitting unit, the main processing unit comprising a first network communication interface and a modulation circuit, the first network communication interface being configured to receive first information from the outside through Ethernet, and the modulation circuit being configured to synchronously load the first information to the driving structure.

[0010] Optionally, the modulation circuit is an OOK modulation circuit; and the transmitting unit further comprises:

[0011] a first signal interface connected to the modulation circuit, configured to receive the first information from the modulation circuit and transmit the first information to the driving structure.

[0012] Optionally, the transmitting unit further comprises:

[0013] a constant-voltage power supply structure connected to the plurality of light source arrays, configured to provide a constant direct current bias power signal to the plurality of light source arrays.

[0014] Optionally, further comprising:

[0015] a receiving unit comprising a photodetector, the photodetector being configured to receive a second deep ultraviolet light signal from the outside and convert the second deep ultraviolet light signal into a photoelectric current signal, the second deep ultraviolet light signal carrying second information;

[0016] a second focusing unit located on a light entrance surface of the photodetector, and the second focusing unit comprising a second quartz lens configured to converge the second deep ultraviolet light signal.

[0017] Optionally, the main processing unit is further connected to the receiving unit, and the main processing unit further comprises a second network communication interface and a demodulation circuit, the demodulation circuit being configured to demodulate the second information in the second deep ultraviolet light signal, and the second network communication interface being configured to transmit the second information to the outside through Ethernet.

[0018] Optionally, the receiving unit further comprises:

[0019] a high-voltage power supply circuit connected to the photodetector, configured to apply a voltage to the photodetector;

[0020] a gain control structure connected to the high-voltage power supply circuit, configured to adjust the size of the voltage applied to the photodetector by the high-voltage power supply circuit.

[0021] Optionally, the receiving unit further comprises:

[0022] The signal optimization circuit includes a transimpedance amplifier, a high-pass filter, a secondary amplifier circuit, and a bootstrap circuit. The transimpedance amplifier is connected to the photodetector and is used to convert the photocurrent signal into a photovoltage signal and amplify the photovoltage signal. The high-pass filter is connected to the transimpedance amplifier and is used to perform high-pass filtering on the photovoltage signal. The secondary amplifier circuit is connected to the high-pass filter and is used to amplify the photovoltage signal. The bootstrap circuit is connected to the secondary amplifier circuit and is used to perform signal boosting on the amplified photovoltage signal.

[0023] Optionally, the receiving unit further includes:

[0024] A signal decision circuit is connected to the signal optimization circuit. The signal decision circuit includes a hysteresis comparator, which is used to perform analog-to-digital decision processing and analog-to-digital conversion processing on the photovoltage signal from the bootstrap circuit, and to recover the second information in the photovoltage signal.

[0025] Optional, also includes:

[0026] A filter, located between the second quartz lens and the photodetector, is used to remove background noise from the second deep ultraviolet light signal.

[0027] The deep ultraviolet secure optical communication device based on multi-path driving provided by this invention, by setting multiple independent driving structures in the transmitting unit and multiple light source arrays electrically connected to each of the driving structures, enables synchronous transmission of transmitted optical signals to multiple light source arrays. This drives multiple light source arrays to simultaneously emit a first deep ultraviolet light signal to the outside world, avoiding the problem of AC signal attenuation caused by signal splitting, optimizing the envelope of the transmitted optical signal, and thus increasing the transmission distance of the first deep ultraviolet light signal, thereby improving the performance of the deep ultraviolet secure optical communication device based on multi-path driving. Simultaneously, the light source array in this invention is composed of multiple deep ultraviolet light-emitting diodes, enabling the deep ultraviolet secure optical communication device based on multi-path driving to perform optical communication in the non-visible solar-blind band, improving the security of the optical communication. Moreover, this invention sets a first quartz lens on the light-emitting surface of the light source array, reducing the scattering and loss of the first deep ultraviolet light signal, thereby further increasing the transmission distance of the first deep ultraviolet light signal emitted by the transmitting unit. Attached Figure Description

[0028] Appendix Figure 1 This is a structural block diagram of a deep ultraviolet secure optical communication device based on multi-path driving in a specific embodiment of the present invention;

[0029] Appendix Figure 2is a structural block diagram of a transmitting unit in the embodiment of the present application;

[0030] attached Figure 3 is a structural block diagram of a receiving unit in the embodiment of the present application. EMBODIMENT

[0031] The embodiment of the present application provides a deep ultraviolet secure optical communication device based on multi-path driving, and the device comprises a transmitting unit and a receiving unit.

[0032] The embodiment provides a deep ultraviolet secure optical communication device based on multi-path driving, and the device comprises a transmitting unit and a receiving unit. Figure 1 is a structural block diagram of a deep ultraviolet secure optical communication device based on multi-path driving in the embodiment of the present application, and the device comprises a transmitting unit and a receiving unit. Figure 2 is a structural block diagram of a transmitting unit in the embodiment of the present application. As shown in Figure 1 and Figure 2 The deep ultraviolet secure optical communication device based on multi-path driving comprises:

[0033] The transmitting unit 11 comprises a plurality of mutually independent driving structures 22 and a plurality of light source arrays 23 electrically connected one by one with the driving structures 22, the driving structure 22 comprises a direct current bias circuit (Bias-Tee), the light source array 23 comprises a plurality of deep ultraviolet light emitting diodes arranged in an array, and the driving structure 22 is used for driving the light source array 23 to emit a first deep ultraviolet light signal to the outside world.

[0034] The first focusing unit 12 is located on an emitting surface of the light source array 23, and the first focusing unit 12 comprises a first quartz lens, and the first quartz lens is used for converging the first deep ultraviolet light signal emitted by the light source array 23.

[0035] Specifically, the transmitting unit 11 of the deep ultraviolet secure optical communication device based on multi-channel driving is used to emit the first deep ultraviolet light signal carrying the first information to the outside world, and since the deep ultraviolet light belongs to the solar blind wave band with non-visibility, the security of the first information transmission can be improved. The transmitting unit 11 includes a plurality of driving structures 22 independent of each other and a plurality of light source arrays 23 electrically connected one by one with the plurality of driving structures 22. The plurality of driving structures 22 are used to drive the plurality of light source arrays 23 one by one, and the plurality of driving structures 22 can synchronously drive the plurality of light source arrays 23, avoiding the problem of weakening of alternating current signals caused by signal splitting, optimizing the envelope of the emitted light signal, thereby increasing the transmission distance of the first deep ultraviolet light signal, and realizing the improvement of the performance of the deep ultraviolet secure optical communication device based on multi-channel driving. At the same time, since the deep ultraviolet light is in a scattering state in the atmosphere, and the loss of the deep ultraviolet light increases exponentially with the increase of the transmission distance, the first focusing unit 12 including the first quartz lens is arranged on the light emitting surface of the light source array 23 in the embodiment, so that the first deep ultraviolet light signal emitted by the light source array 23 is converged by the first focusing unit and then transmitted in the atmosphere, thereby reducing the loss of the first deep ultraviolet light signal in the transmission process, and further increasing the transmission distance of the first deep ultraviolet light signal emitted by the transmitting unit.

[0036] Under the premise of high reliability, fast and far transmission is the key problem of deep ultraviolet light communication device. Multi-channel driving mode can significantly improve the communication distance. Other high-power multi-channel driving modes, such as MOSFET multi-channel driving mode, are affected by parasitic capacitance at high frequency, and the bandwidth is limited when transmitting high-speed signals. High-frequency signals are distorted and cannot be recognized by the receiving end. The specific embodiment adopts Bias-Tee driving mode, which solves the problem of parasitic capacitance influence and has ultra-wideband characteristics. It has better performance in high-power high-speed video communication and helps to establish a stable high-speed communication link. At the same time, the bottleneck of deep ultraviolet light communication is that ultraviolet light has very high path loss in the atmosphere. The specific embodiment adopts Bias-Tee multi-channel driving mode. Compared with IC multi-channel driving mode, Bias-Tee driving mode can realize high-power driving of the transmitting unit in the case of high-speed video signal transmission. It provides larger DC bias and deeper AC modulation amplitude for deep ultraviolet light communication under the premise of ensuring high reliability, and cooperates with high-sensitivity receiving circuit to significantly improve the communication distance. In summary, the Bias-Tee driving mode in the specific embodiment is a driving scheme that combines the advantages of IC driving and MOSFET driving for long-distance and high-speed communication. Moreover, the deep ultraviolet light communication in the specific embodiment is a full-duplex real-time video communication based on multi-channel driving, which is a complete real-time video communication system integrating multi-channel driving, high-sensitivity receiving, and main processing chip. It can realize long-distance and high-speed full-duplex video communication. In addition, the specific embodiment designs optical front ends at the sending and receiving ends to realize focusing function for deep ultraviolet light transmission. The sending end uses a focusing quartz lens, and the receiving end uses a filter, which is a complete deep ultraviolet light communication system.

[0037] In an example, the light source array 23 includes a plurality of deep ultraviolet light emitting diodes arranged in a two-dimensional array, and the deep ultraviolet light emitting diodes are GaN-based quantum well deep ultraviolet light emitting diodes. This is because the emission spectrum and the receiving spectrum of the GaN-based quantum well deep ultraviolet light emitting diode have an overlapping region, so that the GaN-based quantum well deep ultraviolet light emitting diode can not only emit deep ultraviolet light signals to the outside world, but also can detect deep ultraviolet light signals from the outside world (i.e., receive deep ultraviolet light signals from the outside world), so that the deep ultraviolet secure light communication device based on multi-channel driving can realize full-duplex communication.

[0038] In an example, the first focusing unit 12 includes a plurality of first quartz lenses corresponding to the plurality of light source arrays 23, such that the plurality of first quartz lenses cover the light emitting surfaces of the plurality of light source arrays 23 one by one, thereby further improving the light focusing effect and further reducing the loss of the first deep ultraviolet light signal. In another example, the first focusing unit 12 includes one first quartz lens that continuously covers the light emitting surfaces of the plurality of light source arrays 23, thereby improving the light focusing effect while simplifying the manufacturing process of the deep ultraviolet secure optical communication device based on multi-channel driving.

[0039] Optionally, the deep ultraviolet secure optical communication device based on multi-channel driving further includes:

[0040] The main processing unit is connected to the transmitting unit 11, and the main processing unit includes a first network communication interface 13 and a modulation circuit 14. The first network communication interface 13 is used to receive first information from the outside world through Ethernet, and the modulation circuit 14 is used to synchronously load the first information to the driving structure 22.

[0041] Specifically, the main processing unit includes a main processing chip 10, and the first network communication interface 13 and the modulation circuit 14 are electrically connected to the main processing chip. In an example, the main processing chip 10 can be developed based on FPGA Xilinx. For example, after a network camera located outside the deep ultraviolet secure optical communication device based on multi-channel driving acquires a video signal and / or an audio signal, the network camera can transmit the video signal and / or the audio signal to the first network communication interface 13 through a wireless network or a wired network based on an Ethernet communication protocol, and the video signal and / or the audio signal can be used as the first information to be transmitted by the deep ultraviolet secure optical communication device based on multi-channel driving. The first network communication interface 13 transmits the first information to the modulation circuit 14 through the main processing chip 10. The modulation circuit 14 modulates the first information to form a modulation signal, and synchronously transmits the modulation signal to the transmitting unit 11 through a plurality of synchronous parallel output ports. The plurality of synchronous parallel output ports are electrically connected to the driving structure 22 one by one, so as to synchronously drive the light source array 23 through the driving structure 22, and make the light source array 23 synchronously emit the first deep ultraviolet light signal to the outside world.

[0042] In order to further improve the efficiency and accuracy of the deep ultraviolet secure optical communication device based on multi-channel driving in emitting the first deep ultraviolet light signal, the modulation circuit 14 is an OOK modulation circuit, and the transmitting unit 11 further includes:

[0043] The first signal interface 20 is connected to the modulation circuit 14 and is used to receive the first information from the modulation circuit 14 and transmit the first information to the driving structure 22.

[0044] Specifically, the first signal interface 20 can also be used to convert the signal from the modulation circuit 14 into a signal that the driving structure 22 can recognize and process, thereby improving the selection flexibility between the main processing unit and the transmitting unit 11 and further improving the performance of the deep ultraviolet secure optical communication device based on multi-path driving. For example, when the signal that the main processing unit can recognize and process is a TTL (transistor transistor logic) signal: when the signal input to the transmitting unit 11 needs to be a TTL signal, that is, when the type of signal that the driving structure 22 can recognize and process is a TTL signal, the first signal interface 20 does not perform signal type conversion, and the electrical signal from the modulation circuit 14 enters the transmitting unit 11 through the first signal interface 20; when the signal input to the transmitting unit 11 needs to be an LVDS (Low Voltage Differential Signaling) signal, that is, when the type of signal that the driving structure 22 can recognize and process is an LVDS signal, the first signal interface 20 converts the TTL type input signal received from the modulation circuit 14 into an LVDS signal.

[0045] Optionally, the transmitting unit 11 further includes:

[0046] A constant voltage power supply structure 24 is connected to multiple light source arrays and is used to provide a constant DC bias power supply signal to multiple light source arrays 23. This ensures that the light source arrays 23 can stably output the first deep ultraviolet light signal, enabling the deep ultraviolet light-emitting diodes in the light source arrays 23 to operate in the linear region. This allows the deep ultraviolet light-emitting diodes to have high carrier density and high switching response speed, thereby further improving the effect of the deep ultraviolet secure optical communication device based on multi-channel drive in transmitting the first deep ultraviolet light signal.

[0047] In one example, the transmitting unit 11 further includes a signal processing circuit 21, which includes an acceleration circuit and a TTL signal amplification circuit. The acceleration circuit is connected to the first signal interface 20 and is used to accelerate and amplify the modulation signal received by the first signal interface 20 to optimize the modulation signal.

[0048] Appendix Figure 3 This is a structural block diagram of the receiving unit in a specific embodiment of the present invention. Optionally, such as... Figures 1-3As shown, the deep ultraviolet secure optical communication device based on multiplex driving further comprises:

[0049] The receiving unit 15 comprises a photodetector 30 configured to receive a second deep ultraviolet light signal from the outside world and convert the second deep ultraviolet light signal into a photoelectric current signal, the second deep ultraviolet light signal carrying second information;

[0050] The second focusing unit 16 is located on the light entrance surface of the photodetector 30 and comprises a second quartz lens configured to converge the second deep ultraviolet light signal.

[0051] Specifically, the photodetector 30 in the receiving unit 15 can receive the second deep ultraviolet light signal from the outside world carrying the second information, and in order to improve the receiving sensitivity of the receiving unit 15, the second focusing unit 16 is arranged on the light entrance surface of the photodetector 30, and the second deep ultraviolet light signal from the outside world is received by the photodetector 30 after passing through the second quartz lens, and the second quartz lens is configured to focus the second deep ultraviolet light signal.

[0052] In an example, the photodetector 30 can be an avalanche photodiode to improve the detection sensitivity and photoelectric conversion efficiency of the receiving unit 15.

[0053] Optionally, the main processing unit is further connected to the receiving unit 15, and the main processing unit further comprises a second network communication interface 19 and a demodulation circuit 18, the demodulation circuit 18 is configured to demodulate the second information in the second deep ultraviolet light signal, and the second network communication interface 19 is configured to transmit the second information to the outside world through Ethernet.

[0054] For example, after the receiving unit 15 receives the second deep ultraviolet light signal carrying the second information, the second deep ultraviolet light signal is processed to extract and restore the second information, and the restored second information is transmitted to the main processing unit. The demodulation circuit 18 in the main processing unit demodulates the second information to form a demodulation signal, and transmits the demodulation signal to the second network communication interface 19 through the main processing chip 10. The second network communication interface 19 can transmit the demodulation information to a computer or upper machine based on Ethernet communication protocol through wireless network or wired network.

[0055] Optionally, the receiving unit 15 further comprises:

[0056] The high-voltage power supply circuit 32 is connected to the photodetector 30 and configured to apply voltage to the photodetector 30.

[0057] a gain control structure 33 connected to the high-voltage power supply circuit 32, for adjusting the voltage applied to the photodetector 30 by the high-voltage power supply circuit 32.

[0058] Specifically, by adjusting the voltage applied to the photodetector 30 by the gain control structure 33, the magnitude of the photocurrent generated by the photodetector 30 is adjusted, thereby avoiding the problem of the circuit in the receiving unit 15 being disconnected due to the photocurrent signal in the circuit of the receiving unit 15 being too large, so as to ensure the stable operation of the receiving unit 15 and further improve the performance of the deep ultraviolet secure optical communication device based on multi-channel driving. For example, when the current value of the photocurrent signal is greater than a preset range, the gain control structure 33 controls the high-voltage power supply circuit 32 to reduce the voltage applied to the photodetector 30, thereby reducing the sensitivity of the photodetector 30, so that the photocurrent signal generated by the photodetector 30 is reduced to within the preset range. For another example, when the current value of the photocurrent signal is less than the preset range, the gain control structure 33 controls the high-voltage power supply circuit 32 to increase the voltage applied to the photodetector 30, thereby increasing the sensitivity of the photodetector 30, so that the photocurrent signal generated by the photodetector 30 is increased to within the preset range.

[0059] In order to improve the processing efficiency of the receiving unit 15 on the second deep ultraviolet light signal and improve the accuracy and reliability of the second information reception, optionally, the receiving unit 15 further comprises:

[0060] a signal optimization circuit, including a transimpedance amplifier 31, a high-pass filter 34, a secondary amplification circuit 35, and a bootstrap circuit 36, the transimpedance amplifier 31 being connected to the photodetector 30, for converting the photocurrent signal into a photovoltage signal and amplifying the photovoltage signal; the high-pass filter 34 being connected to the transimpedance amplifier 31, for high-pass filtering the photovoltage signal; the secondary amplification circuit 35 being connected to the high-pass filter 34, for amplifying the photovoltage signal; and the bootstrap circuit 36 being connected to the secondary amplification circuit 35, for signal boosting the amplified photovoltage signal.

[0061] Optionally, the receiving unit 15 further comprises:

[0062] A signal decision circuit 37 is connected to the signal optimization circuit, and the signal decision circuit comprises a hysteresis comparator configured to perform analog-digital decision processing and analog-digital conversion processing on the photo-voltage signal from the bootstrap circuit 36, and to recover the second information in the photo-voltage signal.

[0063] Optionally, the receiving unit 15 further comprises a second signal interface 28 connected to the signal decision circuit 37, configured to receive the second information from the signal decision circuit 37, and transmit the second information to the main processing unit. In an example, the second signal interface 28 can also be configured to convert the signal from the signal decision circuit 37 into a signal recognizable and processable by the main processing unit, so as to improve the flexibility of the selection of the main processing unit and the receiving unit 15, and further improve the performance of the deep-ultraviolet secure optical communication device based on multi-path driving.

[0064] Optionally, the deep-ultraviolet secure optical communication device based on multi-path driving further comprises:

[0065] An optical filter 17 is located between the second quartz lens and the photoelectric detector 30, and is configured to filter the background noise in the second deep-ultraviolet light signal, so as to improve the quality of the deep-ultraviolet light communication.

[0066] The deep-ultraviolet secure optical communication device based on multi-path driving provided by the specific embodiment can synchronize the transmission of the emission light signal to the multiple light source arrays, so as to drive the multiple light source arrays to emit the first deep-ultraviolet light signal to the outside at the same time, avoid the problem of weakening of the alternating current signal caused by signal splitting, optimize the envelope of the emission light signal, and thus increase the transmission distance of the first deep-ultraviolet light signal, so as to improve the performance of the deep-ultraviolet secure optical communication device based on multi-path driving. Meanwhile, the light source array in the specific embodiment comprises multiple deep-ultraviolet light-emitting diodes, so that the deep-ultraviolet secure optical communication device based on multi-path driving can perform optical communication in the solar blind waveband with non-visibility, and thus improves the security of the optical communication. Moreover, the specific embodiment is provided with the first quartz lens on the light-emitting surface of the light source array, so as to reduce the scattering and loss of the first deep-ultraviolet light signal, and thus further increase the transmission distance of the first deep-ultraviolet light signal emitted by the emission unit.

[0067] The above only describes the preferred embodiments of the present application, and it should be noted that those skilled in the art can make several improvements and refinements without departing from the principles of the present application, and these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A multi-channel driven deep ultraviolet secure optical communication device, characterized by, The application relates to a deep ultraviolet light emitting device, which comprises the following parts: a transmitting unit, a first focusing unit, a main processing unit, a receiving unit and a second focusing unit. The transmitting unit comprises a plurality of mutually independent driving structures and a plurality of light source arrays which are electrically connected with the driving structures one by one, the driving structure comprises a direct current bias circuit, the light source array comprises a plurality of deep ultraviolet light emitting diodes arranged in an array, the driving structure is used for driving the light source array to emit a first deep ultraviolet light signal to the outside world, and the transmitting unit further comprises a constant voltage power supply structure which is connected with the light source arrays and used for providing constant direct current bias power signals to the light source arrays. The first focusing unit is located on the light emitting surface of the light source array and comprises a first quartz lens which is used for converging the first deep ultraviolet light signal emitted by the light source array. The main processing unit is connected with the transmitting unit and comprises a first network communication interface and a modulation circuit, the first network communication interface is used for receiving first information from the outside world through an Ethernet, and the modulation circuit is used for synchronously loading the first information to the driving structures. The receiving unit comprises a photodetector which is used for receiving a second deep ultraviolet light signal from the outside world and converting the second deep ultraviolet light signal into a photoelectric current signal, the second deep ultraviolet light signal carries second information, the receiving unit further comprises a signal optimization circuit which comprises a transimpedance amplifier, a high-pass filter, a secondary amplification circuit and a bootstrap circuit, the transimpedance amplifier is connected with the photodetector and used for converting the photoelectric current signal into a photoelectric voltage signal and amplifying the photoelectric voltage signal, the high-pass filter is connected with the transimpedance amplifier and used for high-pass filtering the photoelectric voltage signal, and the secondary amplification circuit is connected with the high-pass filter and used for amplifying the photoelectric voltage signal. The bootstrap circuit is connected with the secondary amplification circuit and used for signal lifting the amplified photoelectric voltage signal. The second focusing unit is located on the light entering surface of the photodetector and comprises a second quartz lens which is used for converging the second deep ultraviolet light signal, the main processing unit is further connected with the receiving unit, the main processing unit further comprises a second network communication interface and a demodulation circuit, the demodulation circuit is used for demodulating the second information in the second deep ultraviolet light signal, and the second network communication interface is used for transmitting the second information to the outside world through an Ethernet.

2. The multi-channel driven deep-ultraviolet secure optical communication device according to claim 1, wherein The modulation circuit is an OOK modulation circuit, the transmitting unit further comprises a first signal interface which is connected with the modulation circuit and used for receiving the first information from the modulation circuit and transmitting the first information to the driving structures. The receiving unit further comprises a high-voltage power supply circuit which is connected with the photodetector and used for applying a voltage to the photodetector, and a gain control structure which is connected with the high-voltage power supply circuit and used for adjusting the size of the voltage applied to the photodetector by the high-voltage power supply circuit.

3. The multi-channel driven deep-ultraviolet secure optical communication device according to claim 1, wherein The receiving unit further comprises ​ ​ 4. The multi-channel driven deep-ultraviolet secure optical communication device according to claim 1, wherein ​ A signal decision circuit is connected to the signal optimization circuit, and the signal decision circuit comprises a hysteresis comparator, which is used for analog-digital decision processing and analog-digital conversion processing of the photo-voltage signal from the bootstrap circuit, and recovering the second information in the photo-voltage signal.

5. The multi-channel driven deep-ultraviolet secure optical communication device according to claim 1, wherein Further comprising: An optical filter is located between the second quartz lens and the photoelectric detector, and is used for background noise in the second deep ultraviolet light signal.

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