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Sensors 2016, 16(6), 851;

Backward Secondary-Wave Coherence Errors in Photonic Bandgap Fiber Optic Gyroscopes

Department of Opto-electronics Engineering, Beihang University, Beijing 100191, China
Author to whom correspondence should be addressed.
Academic Editor: Jörg F. Wagner
Received: 25 April 2016 / Revised: 28 May 2016 / Accepted: 3 June 2016 / Published: 8 June 2016
(This article belongs to the Special Issue Inertial Sensors and Systems 2016)
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Photonic bandgap fiber optic gyroscope (PBFOG) is a novel fiber optic gyroscope (FOG) with excellent environment adaptability performance compared to a conventional FOG. In this work we find and investigate the backward secondary-wave coherence (BSC) error, which is a bias error unique to the PBFOG and caused by the interference between back-reflection-induced and backscatter-induced secondary waves. Our theoretical and experimental results show a maximum BSC error of ~4.7°/h for a 300-m PBF coil with a diameter of 10 cm. The BSC error is an important error source contributing to bias instability in the PBFOG and has to be addressed before practical applications of the PBFOG can be implemented. View Full-Text
Keywords: photonic bandgap fiber; fiber optic gyroscope; bias error photonic bandgap fiber; fiber optic gyroscope; bias error

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Xu, X.; Song, N.; Zhang, Z.; Jin, J. Backward Secondary-Wave Coherence Errors in Photonic Bandgap Fiber Optic Gyroscopes. Sensors 2016, 16, 851.

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