Optical fiber coded bidirectional identification device, communication system and method

Abstract

The application discloses a kind of optical fiber encoding bidirectional identification device, communication system and method, comprising: first identification unit, wavelength division multiplexer and second identification unit, first identification unit includes control module, light source module, first diffraction grating, first APD array and circulator, second identification unit includes optical fiber with optical fiber coding, optical splitter, second diffraction grating and second APD array, realize optical fiber coding bidirectional identification.

Claims

1. A fiber optic code bidirectional identification device for fiber optic code identification between a main communication device (100) and a terminal communication device (200), characterized in that, include: The first identification unit (300) includes a control module (310), a light source module (320), a first diffraction grating (330), a first APD array (340), and a circulator (350). The output terminal of the control module (310) is electrically connected to the control terminal of the light source module (320). The output terminal of the light source module (320) is connected to the first port of the circulator (350). The third port of the circulator (350) is connected to the input terminal of the first diffraction grating (330). The output terminal of the first diffraction grating (330) is connected to the input terminal of the first APD array (340). The output terminal of the first APD array (340) is electrically connected to the input terminal of the control module (310). The output terminal of the control module (310) is electrically connected to the input terminal of the main communication device (100). A wavelength division multiplexer (400) is provided, wherein the second port of the circulator (350) is connected to the input of the wavelength division multiplexer (400), and the output of the main communication device (100) is connected to the input of the wavelength division multiplexer (400). The second identification unit (500) includes an optical fiber (520) with fiber coding (510), a beam splitter (530), a second diffraction grating (540), and a second APD array (550). The output of the wavelength division multiplexer (400) is connected to the input of the beam splitter (530) through the optical fiber (520). The first output of the beam splitter (530) is connected to the input of the terminal communication device (200). The second output of the beam splitter (530) is connected to the input of the second diffraction grating (540). The output of the second diffraction grating (540) is connected to the input of the second APD array (550). The output of the second APD array (550) is electrically connected to the input of the terminal communication device (200). In this process, the light source module (320) sends identification light waves, the control module (310) analyzes light wave data of different wavelengths to obtain first fiber optic coding information and sends it to the main communication device (100), the terminal communication device (200) analyzes light wave data of different wavelengths to obtain second fiber optic coding information and sends it to the main communication device (100), the main communication device (100) verifies the first fiber optic coding information and the second fiber optic coding information, and if the first fiber optic coding information and the second fiber optic coding information are consistent, then the bidirectional identification of fiber optic coding is completed.

2. The fiber optic coded bidirectional identification device according to claim 1, characterized in that: The second identification unit further includes a filter (560), the first output terminal of the beam splitter (530) is connected to the input terminal of the filter (560), and the output terminal of the filter (560) is connected to the input terminal of the terminal communication device (200).

3. The fiber optic encoded bidirectional identification device according to claim 2, characterized in that: The splitter (530) has a splitting ratio of 9:

1.

4. A fiber optic coded bidirectional identification communication system, characterized in that, include: The fiber optic coded bidirectional identification device according to any one of claims 1 to 3; The main communication device (100) has its output terminal connected to the input terminal of the wavelength division multiplexer (400), and the output terminal of the control module (310) is electrically connected to the input terminal of the main communication device (100). The terminal communication device (200) has a first output terminal of the splitter (530) connected to the input terminal of the terminal communication device (200), and the output terminal of the second APD array (550) electrically connected to the input terminal of the terminal communication device (200).

5. A fiber optic encoded bidirectional identification method, characterized in that, Includes the following steps: The identification light wave is sent through the light source module (320). The identification light wave is reflected by the fiber optic code (510) and transmitted to the first diffraction grating (330). At the same time, the identification light wave is transmitted through the fiber optic code (510) and transmitted to the second diffraction grating (540). Different wavelengths of light waves are separated from the identification light waves by the first diffraction grating (330), and different wavelengths of light wave data are collected by the first APD array (340). The control module (310) parses the different wavelengths of light wave data to obtain the first fiber optic encoding information and sends it to the main communication device (100). Different wavelengths of light waves are separated from the identification light waves by the second diffraction grating (540), and different wavelengths of light wave data are collected by the second APD array (550) and sent to the terminal communication device (200). The terminal communication device (200) analyzes the different wavelengths of light wave data to obtain the second fiber optic coding information. The terminal communication device (200) sends a communication light wave carrying the second fiber optic coding information to the main communication device (100). The main communication device (100) verifies the first fiber optic coding information and the second fiber optic coding information. If the first fiber optic coding information and the second fiber optic coding information are consistent, then the two-way identification of fiber optic coding is completed.

6. The fiber optic coded bidirectional identification method according to claim 5, characterized in that, The process of acquiring light wave data of different wavelengths through the first APD array (340), and the control module (310) parsing the light wave data of different wavelengths to obtain the first fiber optic encoded information and sending it to the main communication device (100) includes the following steps: The first APD array (340) collects light waves of different wavelengths and the corresponding energy of the light waves; The control module (310) fits the wavelength of the light wave based on the energy bump; The control module (310) analyzes the wavelength, distance and energy of the fiber code (510) based on the convex wavelength of the light wave to obtain the first fiber code information.

7. The fiber optic coded bidirectional identification method according to claim 5, characterized in that, The process of acquiring optical wave data of different wavelengths through the second APD array (550) and sending it to the terminal communication device (200), and the terminal communication device (200) parsing the optical wave data of different wavelengths to obtain the second fiber optic encoded information, includes the following steps: The second APD array (550) is used to collect light waves of different wavelengths and the corresponding energy of the light waves; The terminal communication device (200) fits the concave wavelength of the light wave according to the energy concave point; The terminal communication device (200) analyzes the wavelength and energy of the fiber code (510) based on the concave wavelength of the light wave to obtain the second fiber code information.

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