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Updated: Aug 10, 2025

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Sagnac Effect Compensations and Locked States in a Ring Laser Gyroscope
Woo-Seok Choi1, Kyu-Min Shim1, Kyung-Ho Chong1
1Agency for Defense Development, Daejeon 34186, Republic of Korea.
Abstract:
Frequency lock-in-induced deadband phenomena are major problems of ring laser gyroscopes (RLGs), which deteriorate linear responses to changes in the applied rotation rate. In this work, the frequency lock-in phenomenon occurring in the RLG was successfully investigated by compensating for the Sagnac effect through frequency analysis using a newly defined error function. Integrative and generalized viewpoints from the analyzed results provide new possibilities for relevant performance improvements of optical gyroscopes, as well as a deeper understanding of locked states in principle aspects.
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