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17 June 2019 Temperature modeling of modulation phase error in the integrated optical chip for closed-loop interferometric fiber optic gyroscope
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Abstract
An integrated optical chip (IOC) is the phase modulation actuator in a closed-loop interferometric fiber optic gyroscope (IFOG). Research on temperature characteristic of IOC is meaningful for high-precision IFOG working in harsh environment. We focus on the temperature modeling of the IOC modulation phase error. In theoretical analysis, based on the temperature dependence of the IOC equivalent capacitance, a model between IOC modulation phase error and temperature is proposed. Through experiments, the variation tendency of the IOC equivalent capacitance with temperature is first presented. Subsequently, the IOC modulation phase error is demonstrated to be linear with temperature, which verifies the effectiveness of the proposed model. We provide an error research direction of IOC for high-precision fiber optic gyroscopes.
© 2019 Society of Photo-Optical Instrumentation Engineers (SPIE) 0091-3286/2019/$25.00 © 2019 SPIE
Ran Bi, Xuan She, Tengchao Huang, and Xiaowu Shu "Temperature modeling of modulation phase error in the integrated optical chip for closed-loop interferometric fiber optic gyroscope," Optical Engineering 58(6), 067104 (17 June 2019). https://doi.org/10.1117/1.OE.58.6.067104
Received: 24 February 2019; Accepted: 3 June 2019; Published: 17 June 2019
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