Patent ID: 6212306
Filing Date: 2001-04-03
Classification: G01D,G01L,G02B

Abstract:
An optical fiber serial Bragg grating sensor device, comprising:a) a light source adapted to produce optical pulses;b) an optical fiber network including an optical fiber optically coupled to said light source, the optical fiber including a Bragg sensor array having at least two spaced apart Bragg gratings; andc) an optical transmission element connected to a section of said optical fiber network adapted to receive optical pulses reflected from said at least two Bragg gratings, a wavelength detection means optically coupled to said optical transmission element, switch means connected to said optical transmission element for switching said optical transmission element between an attenuating state in which said optical transmission element attenuates light and a transmission state in which light is transmitted through said optical transmission element to said wavelength detection means, said switch means being activated at selectively adjustable times after production of said optical pulses.