17 May 2011 Tactical-grade interferometric fiber optic gyroscope driven with a narrow-linewidth laser
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Proceedings Volume 7753, 21st International Conference on Optical Fiber Sensors; 77531V (2011) https://doi.org/10.1117/12.886025
Event: 21st International Conference on Optical Fibre Sensors (OFS21), 2011, Ottawa, Canada
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.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Seth W. Lloyd, Seth W. Lloyd, Michel J. F. Digonnet, Michel J. F. Digonnet, Shanhui Fan, Shanhui Fan, } "Tactical-grade interferometric fiber optic gyroscope driven with a narrow-linewidth laser", Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77531V (17 May 2011); doi: 10.1117/12.886025; https://doi.org/10.1117/12.886025
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