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Proceedings Paper

Integrated optical ring-resonator gyro using a silica planar lightwave circuit
Author(s): Kenya Suzuki; Koichi Takiguchi; Kazuo Hotate
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Paper Abstract

In this paper, we report a novel configuration of micro optic gyro (MOG), which is monolithically integrated on silica Planar Lightwave Circuit (PLC) with countermeasures for noise factors. Optical ring-resonator gyros suffer mainly form polarization fluctuation induced noise and backscattering induced noise. We adopt a stress applying amorphus silicon film as the countermeasure for the former, and binary phase shift keying (b-PSK) as the one for the latter. However, to apply b-PSK, thermo-optic (TO) phase modulation is the only one scheme available in silica waveguide, whose bandwidth is limited to approximately 1 KHz. To utilize the narrow bandwidth of the TO modulator effectively, we propose an electrical signal processing scheme and frequency compensating modulation waveform. We demonstrate the suppression of the backscattering induced noise as 7.6dB. Additionally the gyro output is observed with applying an equivalent rotation.

Paper Details

Date Published: 3 February 1999
PDF: 10 pages
Proc. SPIE 3541, Fiber Optic and Laser Sensors and Applications; Including Distributed and Multiplexed Fiber Optic Sensors VII, (3 February 1999); doi: 10.1117/12.339114
Show Author Affiliations
Kenya Suzuki, Univ. of Tokyo (Japan)
Koichi Takiguchi, NTT Opto-Electronics Labs. (Japan)
Kazuo Hotate, Univ. of Tokyo (Japan)


Published in SPIE Proceedings Vol. 3541:
Fiber Optic and Laser Sensors and Applications; Including Distributed and Multiplexed Fiber Optic Sensors VII
Alan D. Kersey; John P. Dakin; John P. Dakin; Alan D. Kersey; Dilip K. Paul, Editor(s)

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