Coherence collapsed multimode source for a fiber optic gyro

Details Coherence collapsed multimode source for a fiber optic gyro Coherence collapsed multimode source for a fiber optic gyro

1994-09-14

1997-03-04

McGraw, Vincent P.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

G01C 1964

Patent

active

056085249

ABSTRACT:
A fiber optic gyro utilizing a multimode mode high power laser diode source with the partly reflective mirror to reflect back some light to the source to cause coherence collapse and broaden the line width and employing a long depolarizer connected to the fiber optic coil to reduce the effects of mode partition noise in the light.

REFERENCES:
patent: 4705399 (1987-11-01), Graindorge et al.
patent: 5245407 (1993-09-01), Nishiura et al.
patent: 5347354 (1994-09-01), Muller et al.
Paper "Integrated Optics: A Practical Solution for the Fiber-Optic Gyroscope" by H. C. Lefevre, S. Vatoux, M. Papuchon and C. Puech presented to the 10th Anniversary Conference 1986 of SPIE and printed in SPIE vol. 719 Fiber Optic Gyros on pp. 101-112.
Article "Scale-Factor-Stabilized Fiber-Optic Gyroscope Based on a Spectrum-Broadened Laser-Dide Source" by Pie-Yau Chien and Ci-Ling Pan and printed in vol. 16, No. 6/Mar. 15, 1991 issue of Optics Letters.

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