Passive ring resonator fiber optic gyro using modulatable highly coherent laser diode module

Tohru Imai; Ken-ichi Nishide; Hideo Ochi; Motoichi Ohtsu

doi:10.1117/12.135043

1 February 1992 Passive ring resonator fiber optic gyro using modulatable highly coherent laser diode module

Tohru Imai, Ken-ichi Nishide, Hideo Ochi, Motoichi Ohtsu

Proceedings Volume 1585, Fiber Optic Gyros: 15th Anniversary Conf; (1992) https://doi.org/10.1117/12.135043
Event: OE Fiber, 1991, Boston, MA, United States

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.

Citation Download Citation

Tohru Imai, Ken-ichi Nishide, Hideo Ochi, and Motoichi Ohtsu "Passive ring resonator fiber optic gyro using modulatable highly coherent laser diode module", Proc. SPIE 1585, Fiber Optic Gyros: 15th Anniversary Conf, (1 February 1992); https://doi.org/10.1117/12.135043

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