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Proceedings Paper

Passive ring resonator fiber optic gyro using modulatable highly coherent laser diode module
Author(s): Tohru Imai; Ken-ichi Nishide; Hideo Ochi; Motoichi Ohtsu
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Paper Abstract

For the light source of the passive ring resonator fiber-optic gyro (RFOG), we have developed 1.3 micron highly coherent laser diode module (HCLDM) using resonant optical feedback from a compact hemispherical reference cavity. The HCLDM had the 100 KHz linewidth and was frequency-modulated by directly modulating the injection current. A FM spectroscopy technique was employed for rotation-sensing. The resolution of the present RFOG system was estimated to be 0.9 X tau exp -1/2 (deg./hour) (where tau is the integration time of measurement) from the signal-to-noise ratio of the demodulated signal.

Paper Details

Date Published: 1 February 1992
PDF: 10 pages
Proc. SPIE 1585, Fiber Optic Gyros: 15th Anniversary Conf, (1 February 1992); doi: 10.1117/12.135043
Show Author Affiliations
Tohru Imai, Tokyo Aircraft Instrument Co., Ltd. (Japan)
Ken-ichi Nishide, Tokyo Aircraft Instrument Co., Ltd. (Japan)
Hideo Ochi, Tokyo Institute of Technology (Japan)
Motoichi Ohtsu, Tokyo Institute of Technology (Japan)

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

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