Research on signal detection of re-entrant fiber optic gyroscope

Xianhui Mao; Qian Tian; Liqun Sun; Yanshen Zhang; Xiaoming Wu; Jinjiang Liu

doi:10.1117/12.573536

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14 February 2005 Research on signal detection of re-entrant fiber optic gyroscope

Xianhui Mao, Qian Tian, Liqun Sun, Yanshen Zhang, Xiaoming Wu, Jinjiang Liu

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Proceedings Volume 5634, Advanced Sensor Systems and Applications II; (2005) https://doi.org/10.1117/12.573536
Event: Photonics Asia, 2004, Beijing, China

Abstract

Re-entrant fiber optic gyroscope (Re-FOG), using a shorter Sangnac sensitive ring (SSR), makes the two counter-propagandizing lights re-enter the ring before they interference with each other when they reach the photo-detector. By this means, the Re-FOG gets the same detecting accuracy as the conventional interferometric fiber optic gyroscope (IFOG) that has several times length of the sensitive ring. In this paper, the principle of the Re-FOG is first reviewed. Then the output signal is analyzed. Finally a method of signal detection is presented.

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Xianhui Mao, Qian Tian, Liqun Sun, Yanshen Zhang, Xiaoming Wu, and Jinjiang Liu "Research on signal detection of re-entrant fiber optic gyroscope", Proc. SPIE 5634, Advanced Sensor Systems and Applications II, (14 February 2005); https://doi.org/10.1117/12.573536

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