Rapid optical fiber coding identification system and identification method based on narrow-band light waves

Abstract

The invention discloses a rapid optical fiber coding identification system and identification method based on narrow-band light waves. The identification system comprises a laser light source used foroutputting a narrow-band spectrum, an annular coupler used for forming a reflection loop, a photoelectric detection module used for collecting reflected light signals, a fiber bragg grating combination sequence used for representing fiber coding and a main control module used for controlling. The main control module is connected with the laser light source and the photoelectric detection module,the output end of the laser light source and the photoelectric detection module are respectively connected to the annular coupler through optical fibers, and the output end of the annular coupler is connected with the fiber bragg grating combination sequence through optical fibers. The fiber grating demodulator solves the problems that a traditional fiber grating demodulator is low in speed, poorin distance measurement precision and high in price when recognizing a fiber grating combination sequence, high-speed recognition and high-precision distance measurement are achieved through narrow-band spectrum output and the photoelectric detection module, the price is low, and the fiber grating demodulator is suitable for large-area popularization.

Description

technical field [0001] The invention relates to the field of optical fiber communication, in particular to a fast optical fiber code identification system and identification method based on narrowband light waves. Background technique [0002] The existing optical fiber code recognition technology mainly relies on the fiber grating interrogator, but the existing optical fiber grating interrogator uses CCD chip, its recognition speed is low, the acquisition frequency generally does not exceed 100KHz, and the fiber grating interrogator is expensive, which cannot be used by a large number of engineering personnel. Equipped, thus not conducive to the identification of FBG combination sequence. Contents of the invention [0003] The purpose of the present invention is to at least solve one of the technical problems existing in the prior art, and provide a fast optical fiber code recognition system and recognition method based on narrowband light waves, wherein the structure of ...

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Problems solved by technology

[0002] The existing optical fiber code recognition technology mainly relies on the fiber grating interrogator, but the existing optical fiber grating interrogator uses CCD chip, its recognition speed is low, the acquisition frequency generally does not exceed 100KHz, and the fiber grating interrogator is expensive, which cannot be used by a large number of engineering personnel. Equipped, thus not conducive to the identification of FBG combination sequence

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