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In-line polarizer used in all-0°-splice resonator fiber-optic gyro

机译：在线偏振器，用于全0°拼接谐振器的光纤陀螺仪

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摘要

A method to suppress the polarization-fluctuation-induced drift in a resonator fiber-optic gyro is proposed in this paper. By inserting one in-line polarizer whose polarization extinction ratio is 30 dB into a polarization-maintaining fiber resonator with 0° polarization-axis splices, the unwanted resonance is introduced to high loss and therefore the ratio of the resonance height of the desired eigen-states of polarization (ESOP) to the unwanted ESOP is 74 dB theoretically; thus the polarization-fluctuation-induced drift is adequately suppressed. The new scheme has excellent operability and high temperature stability simultaneously. Compared to the resonator with twin 90° polarization-axis rotated splices, this scheme does not need precise length difference control. This work is of great importance in the research on resonator integrated optic gyros.
机译：提出了一种抑制谐振器光纤陀螺仪中偏振波动引起的漂移的方法。通过将一个偏振消光比为30 dB的同轴偏振器插入偏振轴为0°的保偏光纤谐振器中，不必要的谐振会引入高损耗，因此会导致所需本征谐振的谐振高度之比。相对于不需要的ESOP的偏振态（ESOP）理论上为74 dB;因此，偏振波动引起的漂移被充分抑制。新方案同时具有出色的可操作性和高温稳定性。与具有双90°极化轴旋转接头的谐振器相比，该方案不需要精确的长度差控制。这项工作在谐振器集成光学陀螺仪的研究中具有重要意义。

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