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Proceedings Paper

Tactical-grade interferometric fiber optic gyroscope driven with a narrow-linewidth laser
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Paper Abstract

We report for the first time a tactical-grade fiber optic gyroscope interrogated with a laser instead of a broadband source. The measured bias drift is 2.5 °/h and the random walk 0.016 °/√ h. This random walk is lower than when the same gyroscope is interrogated with a broadband source, while the drift is only ~3 times higher. This significant development was enabled by an appropriate choice of laser linewidth to mitigate backscattering effects, and careful control of spurious reflections. The benefits of using a laser include a much higher scale factor stability, lower power consumption, and lower component cost.

Paper Details

Date Published: 17 May 2011
PDF: 4 pages
Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77531V (17 May 2011); doi: 10.1117/12.886025
Show Author Affiliations
Seth W. Lloyd, Stanford Univ. (United States)
Michel J. F. Digonnet, Stanford Univ. (United States)
Shanhui Fan, Stanford Univ. (United States)

Published in SPIE Proceedings Vol. 7753:
21st International Conference on Optical Fiber Sensors
Jacques Albert; Wojtek J. Bock, Editor(s)

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