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7 November 2012 Hybrid linear and circular polarization Er-doped fiber ring laser gyroscopes
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Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 84218M (2012) https://doi.org/10.1117/12.970250
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China
Abstract
A bidirectional single-longitudinal-mode Er-doped fiber ring laser was proposed. Based on it, a fiber laser gyroscope was demonstrated. With circularly polarized lights in the Er-doped fiber, and linearly polarized lights in the rest part of the ring, a reciprocal structure was obtained, and the spatial hole burning effect was suppressed. In the experiments, the lock-in threshold rotation rate was 6 o/s. When the rotation rate was beyond 6 o/s, a beat RF signal of over 30-dB noise was observed and a good linear relation between the beat frequency shift and cavity rotation rate were obtained. Finally, the beat frequency stability was tested for 20 o/s clockwise cavity rotation.
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Ke Li, Jue Su, Li Yang, and Jing-Ren Qian "Hybrid linear and circular polarization Er-doped fiber ring laser gyroscopes", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84218M (7 November 2012); https://doi.org/10.1117/12.970250
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