Patent ID: 6571027
Filing Date: 2003-05-27
Classification: G01D,G01L,G02B

Abstract:
A Bragg grating sensor device, comprising:a) a broadband light source adapted to produce optical pulses; b) a Bragg sensor array including at least two spaced apart Bragg gratings located in an optical waveguide, said Bragg sensor array being optically coupled to said light source; and c) an optical modulator optically coupled to said Bragg sensor array for receiving optical signals reflected from said Bragg sensor array, wavelength detection means optically coupled to said optical modulator for analysing wavelength content of said optical signals, adjustable gating means connected to said optical modulator for gating said optical modulator for selectively transmitting optical signals reflected from a preselected Bragg grating in said Bragg sensor array to said wavelength detection means.