Chinese Optics Letters, 2018, 16 (4): 040601, Published Online: Jul. 12, 2018   

Resonator integrated optic gyro based on multilevel laser frequency lock-in technique Download: 629次

Author Affiliations
Key Laboratory of Instrumentation Science and Dynamic Measurement of Ministry of Education, North University of China, Taiyuan 030051, China
Abstract
The resonator integrated optic gyros (RIOGs) based on the Sagnac effect have gained extensive attention in navigation and guidance systems due to their predominant advantages: high theoretical accuracy and simple integration. However, the problems of losing lock and low lock-in accuracy are the bottlenecks, which restrict the development of digital RIOGs. Therefore, a multilevel laser frequency lock-in technique has been proposed in this Letter to address these problems. The experimental results show that lock-in accuracy can be improved one order higher and without losing lock in a variable temperature environment. Then, a digital miniaturized RIOG prototype (18 cm × 18 cm × 20 cm) has been produced, and long-term (1 h) bias stability of 26.6 deg/h is successfully demonstrated.

Ziwen Pan, Chengfei Zhang, Chengfeng Xie, Yongqiu Zheng, Haotian Li, Jun Tang, Jun Liu. Resonator integrated optic gyro based on multilevel laser frequency lock-in technique[J]. Chinese Optics Letters, 2018, 16(4): 040601.

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