Patent ID: 6816260
Filing Date: 2004-11-09
Classification: G01J,G02B

Abstract:
A polarimetric method comprising the steps of:coupling a light wave into a fiber having a fiber Bragg grating inscribed in the fiber at a special angle to an axis of the fiber wherein the fiber Bragg grating comprises at least two fiber Bragg gratings inscribed in the fiber and a wave plate disposed in the fiber between the at least two fiber Bragg gratings; coupling at least two portions of the light wave, depending upon the polarization of the light wave, out of the fiber at the fiber Bragg grating, the two portions being spatially separated with intensity maximums occurring at different polarization states; and detecting each portion coupled out of the fiber at the fiber Bragg grating to provide measurement data, the detecting step comprising the step of coupling a plurality of detectors to the fiber according to the intensity maximums from each fiber Bragg grating, the plurality of detectors grouped in pairs for each fiber Bragg grating.