Optical signal wavelength measurement device and optical fiber Bragg grating sensor device and method using wavelength selective photodetector

摘要

1. TECHNICAL FIELD OF THE INVENTION;The present invention relates to a wavelength measuring device, an optical fiber Bragg grating sensor device, and a method thereof.;2. The technical problem to be solved by the invention;SUMMARY OF THE INVENTION An object of the present invention is to provide an optical signal wavelength measuring apparatus and an optical fiber Bragg grating sensor device using the wavelength dependence of the wavelength selective photodetector, and a method thereof.;3. Summary of Solution to Invention;The invention provides an optical signal generating means for generating an optical signal; An optical fiber Bragg grating receiving the optical signal and reflecting the optical signal according to a setting parameter; Optical branch means for transmitting an optical signal of an optical signal generating means to the optical fiber Bragg grating, and for branching the reflected light of the optical fiber Bragg grating; Optical distribution means for distributing branched optical signals; Light detecting means for converting and detecting one output of the light distribution means into an electrical signal regardless of the wavelength; Wavelength selective light detecting means for converting and detecting the other output of the light distribution means into an electrical signal according to the wavelength; And signal processing means for processing the electrical signal to measure a parameter amount applied to the optical fiber Bragg grating.;4. Important uses of the invention;The present invention is used to measure the temperature and strain.