Optical communication structure and electronic endoscope system

Abstract

The present invention proposes an optical communication structure and an electronic endoscope system, wherein the optical communication structure includes an electro-optical conversion unit connected to the output end of a signal sending body, the electro-optical conversion unit converts different electrical signals sent by the body into optical signals of different wavelengths, the output end of the electro-optical conversion unit is connected to the input end of an amplitude phase modulation module, the output end of the amplitude phase modulation module is connected to the input end of an optical combiner, the output end of the optical combiner is connected to the first end of an optical fiber, the second end of the optical fiber is connected to an optical splitter, the output end of the optical splitter is connected to the input end of a coherent light detection demodulator, the output end of the coherent light detection demodulator is connected to the input end of an optoelectronic conversion unit, the optoelectronic conversion unit is connected to a signal receiving body, and the optoelectronic conversion unit converts optical signals of different wavelengths into electrical signals and then sends them to the signal receiving body. The optical communication structure adopts coherent light technology and can directly perform various signal compensation processes.

Description

Technical Field

[0001] The present invention relates to the field of medical equipment, and in particular to an optical communication structure and an electronic endoscope system. Background Art

[0002] At present, in the field of medical endoscopes, the endoscope body equipped with a camera captures the scene inside the cavity, which is processed by a processing device and displayed on a display. The image captured by the camera is generally transmitted to the processing device via a metal wire. In order to solve the problem of electromagnetic interference, increase the channel bandwidth, and achieve the overall waterproofing of the endoscope, it is proposed to use light instead of electricity to transmit the image signal. However, the image signal and the control signal of the endoscope body in the prior art are transmitted through different pathways. For example, the image signal is transmitted by the first light, and the control signal is transmitted by electricity / second light. In this way, there are two physical transmission pathways in the endoscope body, and the devices are also divided into two groups of devices, which is not conducive to the small size and simple structure of the endoscope body. Summary of the invention

[0003] In order to overcome the defects existing in the above-mentioned prior art, an object of the present invention is to provide an optical communication structure and an electronic endoscope system.

[0004] In order to achieve the above-mentioned purpose of the present invention, the present invention provides an optical communication structure, comprising an electro-optical conversion unit connected to the output end of a signal sending body, the electro-optical conversion unit converts multiple types of different electrical signals emitted by the body into one-to-one corresponding optical signals of different wavelengths, the output end of the electro-optical conversion unit is connected to the input end of an amplitude and phase modulation module, the output end of the amplitude and phase modulation module is connected to the input end of an optical combiner, the output end of the optical combiner is connected to a first end of an optical fiber, the second end of the optical fiber is connected to an optical splitter, the output end of the optical splitter is connected to the input end of a coherent light detection demodulator, the output end of the coherent light detection demodulator is connected to the input end of a photoelectric conversion unit, the photoelectric conversion unit is connected to a signal receiving body, and the photoelectric conversion unit converts optical signals of different wavelengths into electrical signals and then sends them to the signal receiving body.

[0005] This optical communication structure uses coherent light technology to directly perform various signal compensation processes, such as chromatic dispersion compensation and polarization mode dispersion compensation. In contrast, incoherent optical communication requires the use of optical path compensation devices to perform dispersion compensation and other tasks. Since coherent optical communication uses the polarization, amplitude, phase and frequency of light waves to carry more modulation information, this optical communication structure has a larger transmission capacity.

[0006] This optical communication structure can be used in a variety of fields, such as the field of medical devices. When used for signal transmission of endoscopes in medical devices, it can improve the transmission capacity. At the same time, since multiple signals are coupled into one optical signal, the signal transmission path is reduced, which is conducive to the miniaturization of the scope and the simplification of the structure.

[0007] The present invention also proposes an electronic endoscope system based on the above optical communication structure, comprising a scope and a processing unit, and also comprising a first electro-optical conversion unit connected to the signal output end of the scope, the first electro-optical conversion unit converts different types of electrical signals output by the scope into optical signals of different wavelengths, the output end of the first electro-optical conversion unit is connected to the input end of the first amplitude and phase modulation module, the output end of the first amplitude and phase modulation module is connected to the input end of the first optical combiner, the output end of the first optical combiner is connected to the optical fiber on the scope side, the optical fiber on the scope side is connected to one end of the optical connector, the other end of the optical connector is connected to the optical fiber on the processing unit side, the optical fiber on the processing unit side is connected to the first optical splitter, the output end of the first optical splitter is connected to the input end of the first coherent light detection demodulator, the output end of the first coherent light detection demodulator is connected to the input end of the first photoelectric conversion unit, the first photoelectric conversion unit is connected to the processing unit, and the first photoelectric conversion unit converts optical signals of different wavelengths into electrical signals and sends them to the processing unit;

[0008] The signal output end of the processing unit is connected to the second electro-optical conversion unit, and the second electro-optical conversion unit converts different types of electrical signals emitted by the processing unit into optical signals of different wavelengths. The output end of the second electro-optical conversion unit is connected to the input end of the second amplitude and phase modulation module, and the output end of the second amplitude and phase modulation module is connected to the input end of the second optical combiner. The output end of the second optical combiner is connected to the optical fiber on the processing unit side, and the optical fiber on the processing unit side is connected to the optical connector, and the optical connector is connected to the optical fiber on the mirror body side, and the optical fiber on the mirror body side is connected to the second optical splitter. The output end of the second optical splitter is connected to the input end of the second coherent light detection demodulator, and the output end of the second coherent light detection demodulator is connected to the input end of the second photoelectric conversion unit. The second photoelectric conversion unit converts optical signals of different wavelengths into electrical signals and then sends them to the instruction execution unit of the mirror body.

[0009] The electronic endoscope system converts the signal to be sent into optical signals of different wavelengths, then combines them into one light, and then performs amplitude and phase modulation to form coherent light. When receiving, the received optical signal is subjected to wave splitting processing, and then coherent optical demodulation is performed to separate optical signals of various wavelengths, thereby reducing the signal transmission path, which is conducive to the small size and simple structure of the scope. The use of this coherent optical technology can directly compensate for various signals sent by the scope and processing unit, such as chromatic dispersion compensation and polarization mode dispersion compensation. At the same time, coherent optical communication uses the polarization, amplitude, phase and frequency of light waves to carry more modulation information, thereby expanding the transmission capacity and avoiding congestion when the scope and processing unit send more signals.

[0010] The preferred solution of the electronic endoscope system: also includes a first optical monitoring channel device, a second optical monitoring channel device and an optical communication management unit; the optical signal sending end of the first optical monitoring channel device is connected to the input end of the first optical combiner, and the optical signal receiving end of the first optical monitoring channel device is connected to the output end of the second optical splitter; the optical signal sending end of the second optical monitoring channel device is connected to the input end of the second optical combiner, and the optical signal receiving end of the second optical monitoring channel device is connected to the output end of the first optical splitter; the optical communication management unit is connected to the first optical monitoring channel device and the second optical monitoring channel device, and the optical communication management unit is connected to the control unit. This ensures the accuracy of signal transmission.

[0011] A preferred solution of the electronic endoscope system: the first amplitude phase modulation module includes N first amplitude phase modulators, wherein N is a positive integer not less than the number of signal types output by the scope;

[0012] The second amplitude phase modulation module includes M second amplitude phase modulators, wherein M is a positive integer not less than the number of signal types output by the processing unit, which ensures that each optical signal has an amplitude phase modulator corresponding to it and only corresponding to it.

[0013] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0015] Figure 1 It is a schematic diagram of the data flow from the mirror body to the processing unit;

[0016] Figure 2 It is a schematic diagram of the data flow from the processing unit to the mirror body. DETAILED DESCRIPTION

[0017] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0018] In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal connection between two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0019] The present invention provides an optical communication structure, comprising an electro-optical conversion unit connected to an output end of a signal sending body, the electro-optical conversion unit converts multiple types of different electrical signals sent by the body into one-to-one corresponding optical signals of different wavelengths, the output end of the electro-optical conversion unit is connected to an input end of an amplitude phase modulation module, the output end of the amplitude phase modulation module is connected to an input end of an optical combiner, the output end of the optical combiner is connected to a first end of an optical fiber, the second end of the optical fiber is connected to an optical splitter, the output end of the optical splitter is connected to an input end of a coherent light detection demodulator, the output end of the coherent light detection demodulator is connected to an input end of a photoelectric conversion unit, the photoelectric conversion unit is connected to a signal receiving body, the photoelectric conversion unit converts optical signals of different wavelengths into electrical signals and then sends them to the signal receiving body.

[0020] In this embodiment, the optical combiner and optical splitter are preferably, but not limited to, optical combiner and splitter of model 303SM32LSP; the electro-optical conversion unit is preferably, but not limited to, one or more electro-optical conversion chips of model ADN2841; the photoelectric conversion unit is preferably, but not limited to, one or more S5927 photodiodes; the amplitude and phase modulation module is preferably, but not limited to, one or more EP4CE22F17C6 chips; the coherent optical detection demodulator is preferably, but not limited to, one or more coherent receivers of model CPRV1220.

[0021] Coherent optical technology can directly perform various signal compensation processes, such as chromatic dispersion compensation and polarization mode dispersion compensation, while incoherent optical communication requires the use of optical path compensation devices to perform dispersion compensation and other work. Coherent optical communication uses the polarization, amplitude, phase and frequency of light waves to carry more modulation information, thereby expanding the transmission capacity.

[0022] The optical combiner and the optical splitter can be composed of optical fiber, a light splitting element and a collimating and focusing system. The present invention preferably adopts photon integration technology, such as planar optical waveguide technology, etc., and can adopt both passive photon integration technology and active photon integration technology.

[0023] To ensure the accuracy of optical communication, the optical communication structure also includes an optical monitoring generator and an optical monitoring receiver; the optical monitoring generator is connected to the input end of the optical combiner, and the optical monitoring receiver is connected to the output end of the optical splitter; the optical monitoring generator and the optical monitoring receiver are respectively connected to the optical communication management module, and the optical communication management module is connected to the control unit.

[0024] The optical communication management module can determine whether there is an optical communication fault in the optical communication by determining whether the optical monitoring signal sent by the optical monitoring generator and the optical monitoring signal received by the optical monitoring receiver are frame synchronized, or determine whether there is an optical communication fault in the optical communication by CRC cyclic redundancy check, or determine whether there is an optical communication fault in the optical communication by detecting the light intensity. The above judgment methods can also be used simultaneously and the above judgment methods are all prior art. When there is no fault in the optical communication, normal signal transmission is performed. When there is a fault in the optical communication, the optical communication management module can use the prior art to control the optical path transmission, such as increasing the power of the light-emitting device of the optical monitoring generator to improve fault tolerance; the optical communication management module can also send fault information and / or processing information to the processing unit, and the processing unit performs corresponding alarm processing and / or fault processing.

[0025] Since optical signals may be lost during transmission, in this embodiment, the output end of the optical combiner is connected to the input end of the optical power amplifier, and the output end of the optical power amplifier is connected to the first end of the optical fiber; the second end of the optical fiber is connected to the input end of the preamplifier, and the output end of the preamplifier is connected to the optical splitter to compensate for the loss of the optical signal during transmission.

[0026] like Figure 1 and Figure 2 As shown, the present invention provides an electronic endoscope system, comprising a scope, a processing unit, and a first electro-optical conversion unit connected to a signal output end of the scope, wherein the signal output by the scope includes an image signal and a scope signal, the first electro-optical conversion unit converts different types of electrical signals output by the scope into optical signals of different wavelengths, the output end of the first electro-optical conversion unit is connected to an input end of a first amplitude and phase modulation module, the output end of the first amplitude and phase modulation module is connected to an input end of a first optical combiner, the output end of the first optical combiner is connected to an optical fiber on the scope side, the optical fiber on the scope side is connected to one end of an optical connector, the other end of the optical connector is connected to an optical fiber on the processing unit side, the optical fiber on the processing unit side is connected to a first optical splitter, the output end of the first optical splitter is connected to an input end of a first coherent light detection demodulator, the output end of the first coherent light detection demodulator is connected to an input end of a first photoelectric conversion unit, the first photoelectric conversion unit is connected to a processing unit, and the first photoelectric conversion unit converts optical signals of different wavelengths into electrical signals and sends them to the processing unit.

[0027] Among them, the first amplitude-phase modulation module includes N first amplitude-phase modulators, wherein N is a positive integer not less than the number of signal types output by the mirror body, and optical signals of different wavelengths are transmitted to the first amplitude-phase modulators corresponding to each other for modulation.

[0028] The signal output by the processing unit includes at least one control signal. The signal output end of the processing unit is connected to the second electro-optical conversion unit. The second electro-optical conversion unit converts different types of electrical signals sent by the processing unit into optical signals of different wavelengths. The output end of the second electro-optical conversion unit is connected to the input end of the second amplitude phase modulation module. The output end of the second amplitude phase modulation module is connected to the input end of the second optical combiner. The output end of the second optical combiner is connected to the optical fiber on the processing unit side. The optical fiber on the processing unit side is connected to the optical connector. The optical connector is connected to the optical fiber on the mirror body side. The optical fiber on the mirror body side is connected to the second optical splitter. The output end of the second optical splitter is connected to the input end of the second coherent light detection demodulator. The output end of the second coherent light detection demodulator is connected to the input end of the second photoelectric conversion unit. The second photoelectric conversion unit converts optical signals of different wavelengths into electrical signals and then sends them to the instruction execution unit of the mirror body. The second amplitude phase modulation module includes M second amplitude phase modulators, wherein M is a positive integer not less than the number of signal types output by the processing unit. Optical signals of different wavelengths are transmitted to the second amplitude phase modulators corresponding to each other for modulation.

[0029] In this embodiment, the optical connector includes an optical connector on the mirror body side and an optical connector on the processing unit side. The optical connector on the mirror body side is connected to the optical fiber on the mirror body side, and the optical connector on the processing unit side is connected to the optical fiber on the processing unit side. The optical connector on the mirror body side and the optical connector on the processing unit side cooperate with each other to realize optical signal transmission.

[0030] In order to ensure the accuracy of signal transmission, the optical communication structure between the endoscope host processing unit and the endoscope body also includes a first optical monitoring channelizer, a second optical monitoring channelizer and an optical communication management unit. The optical signal sending end of the first optical monitoring channelizer is connected to the input end of the first optical combiner, and the optical signal receiving end of the first optical monitoring channelizer is connected to the output end of the second optical splitter; the optical signal sending end of the second optical monitoring channelizer is connected to the input end of the second optical combiner, and the optical signal receiving end of the second optical monitoring channelizer is connected to the output end of the first optical splitter; the optical communication management unit is connected to the first optical monitoring channelizer and the second optical monitoring channelizer, and the optical communication management unit is connected to the control unit.

[0031] The optical communication management unit can determine whether there is an optical communication fault in the optical communication by determining whether the optical monitoring signals sent and received by the first optical monitoring channel device and the second optical monitoring channel device are frame synchronized, or determine whether there is an optical communication fault in the optical communication by CRC cyclic redundancy check, or determine whether there is an optical communication fault in the optical communication by detecting the light intensity. The above methods can also be used simultaneously. When there is no fault in the optical communication, normal signal transmission is performed. When there is a fault in the optical communication, the optical communication management unit can use existing technology to control the optical path transmission, such as increasing the power of the light-emitting devices of the first optical monitoring channel device and the second optical monitoring channel device to improve fault tolerance; the optical communication management unit can also send fault information and / or processing information to the processing unit, and the processing unit will perform corresponding alarm processing and / or fault processing.

[0032] Since optical signals may be lost during transmission, in this embodiment, a first optical power amplifier is connected to the output end of the first optical combiner, and the output end of the first optical power amplifier is connected to the optical fiber on the endoscope body; the optical fiber on the endoscope body is connected to the input end of the first preamplifier, and the output end of the first preamplifier is connected to the first optical splitter; the output end of the second optical combiner is connected to the input end of the second optical power amplifier, and the output end of the second optical power amplifier is connected to the optical fiber on the endoscope body; the optical fiber on the endoscope body is connected to the input end of the second preamplifier, and the output end of the second preamplifier is connected to the second optical splitter.

[0033] Take a specific example: Figure 1 , is a data flow diagram from the scope to the endoscope host processing unit / cold light source. After the optical system in the scope is imaged, it is converted into a digital electrical signal by CMOS processing and sent to the first electro-optical conversion unit, and then converted into an optical image signal with a wavelength of I (for example, 1530nm) by the first electro-optical conversion unit; the scope information stored in the non-volatile data storage device in the scope, such as ferroelectric, can be ID information, model information, etc., which is converted into an optical scope signal I with a wavelength of II (for example, 1550nm) by the first electro-optical conversion unit; the sensor signals generated by various sensors in the scope, such as the temperature sensor and the photosensitizer at the head end of the scope, are converted into an optical scope signal II with a wavelength of III (for example, 1570nm) by the first electro-optical conversion device; each of the above-mentioned signal lights is processed by the first amplitude phase modulator corresponding to each other to become coherent light with different amplitudes and phases, and then synthesized into one light by the first optical combiner and sent to the first optical power amplifier for amplification, and then coupled to the optical fiber on the scope side for transmission.

[0034] The first optical monitoring channel inserts an optical monitoring signal (wavelength 1510nm) in the first optical combiner node. The wavelength of the optical monitoring signal is different from the wavelength of the optical signal in the main channel. The optical monitoring signal is mixed with the optical signal of the main channel and output. The first optical monitoring channel simultaneously sends the optical monitoring signal to the optical communication management unit.

[0035] The optical connector realizes the transmission of the optical signal from the mirror body side to the optical signal from the processing unit side. The optical signal is transmitted from the optical connector on the mirror body side to the opposite optical connector on the processing unit side.

[0036] The first preamplifier amplifies the optical signal attenuated by transmission, and then uses the first optical splitter to separate the optical signals of each specific wavelength for reception, including the optical monitoring signal. The light processed by the first optical splitter is demodulated by the first coherent light detection demodulator to separate the optical image signal, the optical mirror body signal I, and the optical mirror body signal II, which are then converted into electrical signals by the first photoelectric conversion unit and processed by the processing unit. The image signal is finally displayed on the display unit. The optical monitoring signal is received by the second optical monitoring channel device and sent to the optical communication management unit. The optical communication management unit determines whether there is a fault in the optical communication. When there is no fault in the optical communication, normal signal transmission is performed. When there is a fault in the optical communication, the optical communication management unit can control the optical path transmission, such as increasing the power of the light-emitting device of the first optical monitoring channel device to improve fault tolerance. The optical communication management unit can also send fault information and / or processing information to the processing unit, and the processing unit performs corresponding alarm processing and / or fault processing. The specific monitoring method has been described above and is a prior art, so it is not described in detail here.

[0037] like Figure 2 As shown, it is a data flow diagram from the endoscope host processing unit / cold light source to the scope. The processing unit sends out electrical control signals I, II, III, etc., such as control signals for controlling the action of the lens group at the head end of the scope, heating signals at the head end of the scope, optical communication management signals, etc., which are converted by the second electro-optical conversion unit into optical control signals I (for example, the wavelength is 1450nm), optical control signals II (for example, the wavelength is 1470nm), and optical control signals III (for example, the wavelength is 1490nm) of different wavelengths. Each of the above signal lights is processed by its own second amplitude and phase modulator to become coherent light with different amplitudes and phases. The above optical signals are synthesized by the second optical combiner and sent to the second optical power amplifier for amplification, and then coupled to the optical fiber on the processing unit side for transmission.

[0038] The second optical monitoring channel inserts the optical monitoring signal into the second optical combiner node, mixes it with the optical signal of the main channel and outputs it. The second optical monitoring channel simultaneously sends the optical monitoring signal to the optical communication management unit.

[0039] The optical connector realizes the transmission of the optical signal from the processing unit side to the optical signal from the mirror body side. The optical signal is transmitted from the optical connector on the processing unit side to the opposite optical connector on the mirror body side.

[0040] The second preamplifier first amplifies the optical signal attenuated by transmission, and then uses the second optical splitter to separate the optical signals of each specific wavelength for reception, including the optical monitoring signal. The light processed by the second optical splitter is then demodulated by the second coherent optical detection demodulator to separate the optical control signal I, the optical control signal II, and the optical control signal III, which are then converted into electrical signals by the second photoelectric conversion unit and respectively executed by the execution system in the mirror body. The optical monitoring signal is received by the first optical monitoring channel device and sent to the optical communication management unit. The optical communication management unit determines whether there is a fault in the optical communication. When there is no fault in the optical communication, normal signal transmission is performed. When there is a fault in the optical communication, the optical communication management unit can control the optical path transmission, such as increasing the power of the light-emitting device of the second optical monitoring channel device to improve fault tolerance. The optical communication management unit can also send fault information and / or processing information to the processing unit, and the processing unit performs corresponding alarm processing and / or fault processing. The specific monitoring method has been described above and is a prior art, so it will not be described in detail here.

[0041] like Figure 1 and Figure 2 As shown, the bidirectional flow of signals is completed in the same optical path. In this embodiment, both dual-fiber unidirectional transmission (using two optical fibers to realize signal transmission in two directions) and single-fiber bidirectional transmission (the optical path is transmitted in two different directions in one optical fiber at the same time, and the wavelengths of the bidirectional transmission are separated from each other to realize full-duplex communication between the two parties) are adopted. Preferably, single-fiber bidirectional transmission is adopted.

[0042] In this embodiment, the first amplitude phase modulator and the second amplitude phase modulator preferably use but are not limited to EP4CE22F17C6 chip, the first optical power amplifier and the second optical power amplifier preferably use but are not limited to AD8066 operational amplifier; the first preamplifier and the second preamplifier preferably use but are not limited to OPA847 amplifier.

[0043] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0044] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An electronic endoscope system based on an optical communication structure, comprising a scope body and a processing unit, characterized in that , further comprising a first electro-optical conversion unit connected to the signal output end of the mirror body, the first electro-optical conversion unit converts different types of electrical signals output by the mirror body into optical signals of different wavelengths corresponding to each other, the output end of the first electro-optical conversion unit is connected to the input end of the first amplitude and phase modulation module, the output end of the first amplitude and phase modulation module is connected to the input end of the first optical combiner, the output end of the first optical combiner is connected to the input end of the first optical power amplifier, the output end of the first optical power amplifier is connected to the optical fiber on the mirror body side, the optical fiber on the mirror body side is connected to the input end of the second preamplifier, the output end of the second preamplifier is connected to one end of the optical connector, the other end of the optical connector is connected to the optical fiber on the processing unit side, the optical fiber on the processing unit side is connected to the first optical splitter, the output end of the first optical splitter is connected to the input end of the first coherent optical detection demodulator, the output end of the first coherent optical detection demodulator is connected to the input end of the first photoelectric conversion unit, the first photoelectric conversion unit is connected to the processing unit, and the first photoelectric conversion unit converts optical signals of different wavelengths into electrical signals and sends them to the processing unit; Single-fiber bidirectional signal transmission is adopted between the mirror body and the processing unit; The signal output end of the processing unit is connected to the second electro-optical conversion unit, and the second electro-optical conversion unit converts different types of electrical signals emitted by the processing unit into optical signals of different wavelengths corresponding to each other. The output end of the second electro-optical conversion unit is connected to the input end of the second amplitude and phase modulation module, and the output end of the second amplitude and phase modulation module is connected to the input end of the second optical combiner, and the output end of the second optical combiner is connected to the input end of the second optical power amplifier, and the output end of the second optical power amplifier is connected to the optical fiber on the processing unit side, and the optical fiber on the processing unit side is connected to the input end of the first preamplifier, and the output end of the first preamplifier is connected to the optical connector, and the optical connector is connected to the optical fiber on the mirror body side, and the optical fiber on the mirror body side is connected to the second optical splitter, and the output end of the second optical splitter is connected to the input end of the second coherent light detection demodulator, and the output end of the second coherent light detection demodulator is connected to the input end of the second photoelectric conversion unit, and the second photoelectric conversion unit converts the optical signals of different wavelengths into electrical signals and then sends them to the instruction execution unit of the mirror body; Also includes a first optical monitoring channelizer, a second optical monitoring channelizer and an optical communication management unit; The optical signal transmitting end of the first optical monitoring channelizer is connected to the input end of the first optical combiner, and the optical signal receiving end of the first optical monitoring channelizer is connected to the output end of the second optical splitter; The optical signal transmitting end of the second optical monitoring channel device is connected to the input end of the second optical combiner, and the optical signal receiving end of the second optical monitoring channel device is connected to the output end of the first optical splitter; The optical communication management unit is connected to the first optical monitoring channel device, the second optical monitoring channel device, and the processing unit; The optical communication management unit determines whether there is an optical communication fault in the optical communication. When there is no optical communication fault, normal signal transmission is performed. When there is an optical communication fault, the optical communication management unit controls the optical path transmission. The optical communication management unit sends the fault information and / or processing information to the processing unit, and the processing unit performs corresponding alarm processing and / or fault processing.

2. The electronic endoscope system based on the optical communication structure according to claim 1 is characterized in that The optical connector includes an optical connector on the mirror body side and an optical connector on the processing unit side. The optical connector on the mirror body side is connected to the optical fiber on the mirror body side, and the optical connector on the processing unit side is connected to the optical fiber on the processing unit side. The optical connector on the mirror body side and the optical connector on the processing unit side cooperate with each other to realize optical signal transmission.

3. The electronic endoscope system based on the optical communication structure according to claim 1 is characterized in that The signal output by the mirror includes an image signal and a mirror signal; the signal output by the processing unit includes at least one control signal.

4. The electronic endoscope system based on optical communication structure according to claim 1 is characterized in that , the first amplitude phase modulation module includes N first amplitude phase modulators, wherein N is a positive integer not less than the number of signal types output by the mirror body; The second amplitude-phase modulation module includes M second amplitude-phase modulators, wherein M is a positive integer not less than the number of signal types output by the processing unit.

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