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Proceedings Paper

AM noise reduction in fiber optic rotation sensors
Author(s): Hidehiko Negishi; Yoshinori Takeuchi; Yoshihiko Honjoya; Yuko Takei; Yukio Kasahara
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Paper Abstract

We evaluated the phase and amplitude characteristics of output noise in fiber optic rotation sensors with a single-mode fiber sensing loop. We found that the major source of the noise was amplitude modulation (AM) noise caused by a phase modulator, and that the AM noise always had an approximate 90 degrees phase difference from the rotation signal. Thus, by adjusting the lock-in reference signal phase to the node of the AM noise, the output drift was markedly reduced to about 2 deg/h.

Paper Details

Date Published: 1 February 1992
PDF: 12 pages
Proc. SPIE 1585, Fiber Optic Gyros: 15th Anniversary Conf, (1 February 1992); doi: 10.1117/12.135057
Show Author Affiliations
Hidehiko Negishi, Matsushita Research Institute Tokyo, Inc. (Japan)
Yoshinori Takeuchi, Matsushita Research Institute Tokyo, Inc. (Japan)
Yoshihiko Honjoya, Matsushita Research Institute Tokyo, Inc. (Japan)
Yuko Takei, Matsushita Research Institute Tokyo, Inc. (Japan)
Yukio Kasahara, Matsushita Research Institute Tokyo, Inc. (Japan)


Published in SPIE Proceedings Vol. 1585:
Fiber Optic Gyros: 15th Anniversary Conf

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