Apparatus and method for processing signals output from fiber op

Details Apparatus and method for processing signals output from fiber op Apparatus and method for processing signals output from fiber op

1997-02-05

1998-07-07

Turner, Samuel A.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

G01C 1972

Patent

active

057777373

ABSTRACT:
A fiber optic rotation sensor includes a 3.times.3 optical coupler formed of first, second and third optical waveguides. The first, second and third optical waveguides are formed such that the fractions of light coupled from any one of the first, second and third optical waveguides to the other two optical waveguides are constant, independent of thermally-induced changes in the interaction length. An optical signal source provides an input optical signal to the first optical waveguide such that portions of the input optical signal are coupled from the first optical waveguide into the second and third optical waveguides. The optical fiber in which the sensing loop is formed has ends that are coupled to the second and third optical waveguides to receive optical signals that form counterpropagating optical waves in a fiber optic sensing loop and to combine the counterpropagating optical waves after they have traversed the sensing loop.

REFERENCES:
patent: 4440498 (1984-04-01), Sheem
patent: 4479715 (1984-10-01), Sheem
patent: 5031988 (1991-07-01), Okada
patent: 5037204 (1991-08-01), Poisel et al.
patent: 5062710 (1991-11-01), Okada et al.
patent: 5080488 (1992-01-01), Buehler et al.
patent: 5146292 (1992-09-01), Buehler et al.
patent: 5195151 (1993-03-01), Campbell, Jr. et al.
patent: 5227860 (1993-07-01), Hartl et al.
patent: 5345307 (1994-09-01), Ishigami
patent: 5486921 (1996-01-01), Priest

Affiliated with

Also associated with

Rating

Apparatus and method for processing signals output from fiber op does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus and method for processing signals output from fiber op, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for processing signals output from fiber op will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1211930