Fiber optic gyroscope

Details Fiber optic gyroscope Fiber optic gyroscope

2007-07-11

2010-06-29

Connolly, Patrick J (Department: 2877)

Optics: measuring and testing

By light interference

Rotation rate

C356S460000

Reexamination Certificate

active

07746476

ABSTRACT:
A fiber optic gyroscope including an optical circulator in the path of said first and second beams for providing polarized first and second beams of identical polarization. A phase modulator couples the first and second beams to the first and second end respectively of the fiber loop, and couples for receiving the return first and second beams from the second and first ends respectively of the fiber loop. First and second photodiodes are coupled to the optical circulator for receiving the optical signal from the first and second return beams.

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