Optical fiber gyroscope with (3.times.3) directional coupler

Details Optical fiber gyroscope with (3.times.3) directional coupler Optical fiber gyroscope with (3.times.3) directional coupler

1981-11-13

1984-04-03

McGraw, Vincent P.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

350 9615, G01C 1964, G02B 514

Patent

active

044404980

ABSTRACT:
A Sagnac rotation sensing interferometer disposed on a rotating platform for use as a gyrsocope comprising a closed optical light path and a beam splitter for splitting an input light beam into two beams directed to transverse the closed optical path in opposite directions wherein the beam splitter is composed of a directional coupler with three input ports and three output ports. The first of the three input ports receives optical input and the second and third of the input ports are disposed symmetrically with respect to the first input port. Optical output from two output ports corresponding to the second and third input ports are directed to both ends of the closed optical fiber light path. A gyroscope according to this arrangement provides light output from the beam splitter which operates automatically near quadrature without a nonreciprocal .pi./2 phase bias applied in the fiber loop as required in conventional optical fiber gyroscopes.

REFERENCES:
patent: 3102953 (1963-09-01), Wallace
patent: 4013365 (1977-03-01), Vali et al.
Sheem et al., "Optical Fiber Gyroscope with (3.times.2) Guided-Wave Split," Third International Conference on Integrated Optics and Optical Fiber Communications, San Francisco, Ca., USA (Apr. 27-29, 1981), pp. 116-117.

Affiliated with

Also associated with

Rating

Optical fiber gyroscope with (3.times.3) directional coupler does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical fiber gyroscope with (3.times.3) directional coupler, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical fiber gyroscope with (3.times.3) directional coupler will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-665198