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Proceedings Paper

Resonator fiber optic gyro with high backscatter-error suppression using two independent phase-locked lasers
Author(s): Jiangfeng Wu; Marc Smiciklas; Lee K. Strandjord; Tiequn Qiu; Waymon Ho; Glen A. Sanders
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Paper Abstract

A resonator fiber optic gyro was constructed using separate lasers for counter-rotating waves to overcome interference between optical backscatter and signal light that causes dead-zone behavior and scale factor nonlinearity. This approach enabled a 2 MHz frequency separation between waves in the resonator; eliminating the intended backscatter error. The two lasers were phase-locked to prevent increased gyro noise due to laser frequency noise. Dead-band-free operation near zero-rate, scale factor linearity of 25 ppm and stability of 11 ppm were demonstrated ─ the closest results to navigation-grade performance reported to date. The approach is also free of impractical frequency shifter technology.

Paper Details

Date Published: 28 September 2015
PDF: 4 pages
Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 96341O (28 September 2015); doi: 10.1117/12.2195220
Show Author Affiliations
Jiangfeng Wu, Honeywell International (United States)
Marc Smiciklas, Honeywell International (United States)
Lee K. Strandjord, Honeywell International (United States)
Tiequn Qiu, Honeywell International (United States)
Waymon Ho, Honeywell International (United States)
Glen A. Sanders, Honeywell Technology (United States)

Published in SPIE Proceedings Vol. 9634:
24th International Conference on Optical Fibre Sensors
Hypolito José Kalinowski; José Luís Fabris; Wojtek J. Bock, Editor(s)

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