Optical Compensation for Compressing Polarization Nonreciprocity Induced Errors in Interferometric Fiber-Optic Gyroscopes

Abstract:

Optical compensation is studied for suppressing polarization nonreciprocity (PN) induced errors in interferometric fiber-optic gyroscopes (IFOG). In convention IFOGs, a polarizer is necessarily used, and only one polarization is used for interference in order to achieve low PN error. Differently, we propose a new approach for using two polarizations simultaneously in the IFOG. PN error can be effectively suppressing by optical compensation between the two detected signals. Both simulation and experiment are presented, which shows that PN errors are effectively reduced by optical compensation. This new approach paves the way for low drift IFOGs with no polarizer.

• Periodical: Applied Mechanics and Materials (Volumes 303-306)
• Pages: 82-85
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.303-306.82
• Online since: February 2013
• Authors: Zi Nan Wang, Yi Yang, Ping Lu, Yong Xiao Li, Chao Peng, Zhen Rong Zhang, Zheng Bin Li
• Keywords: Depolarizer, Fiber-Optic Gyroscope, Optical Compensation, Rotation Sensor

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