Suppressing polarization non-reciprocity error with reverse phase modulation in dual-polarization fiber optic gyroscopes

Suppressing polarization non-reciprocity error with reverse phase modulation in dual-polarization fiber optic gyroscopes

In a dual-polarization interferometric fiber optic gyroscope (IFOG), polarization non-reciprocity (PN) errors are significant, which degrades the IFOG performance due to the polarization coupling between two orthogonal axes. A dual-polarization IFOG with reverse phase modulation is proposed in which...

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Veröffentlicht in:Optics express 2018-12, Vol.26 (26), p.34150-34160
Hauptverfasser: Li, Yulin, Luo, Rongya, Chen, Fangyuan, Deng, Sheng, He, Dong, Peng, Chao, Li, Zhengbin
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container_end_page 34160
container_issue 26
container_start_page 34150
container_title Optics express
container_volume 26
creator Li, Yulin
Luo, Rongya
Chen, Fangyuan
Deng, Sheng
He, Dong
Peng, Chao
Li, Zhengbin
description In a dual-polarization interferometric fiber optic gyroscope (IFOG), polarization non-reciprocity (PN) errors are significant, which degrades the IFOG performance due to the polarization coupling between two orthogonal axes. A dual-polarization IFOG with reverse phase modulation is proposed in which PN phase error can be sufficiently suppressed. In our scheme using a 2-km polarization maintaining coil with open-loop configuration, angle random walk of 4.62×10 °/h and a bias instability of 4.6 × 10 °/h is demonstrated in detecting the Earth's rotation rate.
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title Suppressing polarization non-reciprocity error with reverse phase modulation in dual-polarization fiber optic gyroscopes
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