干涉式光纤陀螺仪中高柔性双偏振调制的研制

IF 5 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology Pub Date : 2025-08-02 DOI:10.1016/j.optlastec.2025.113670

Weibin Feng , Tianxiao Zhang , Xiaoya Fan , Haosong Yang , Yuefeng Qi

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引用次数: 0

摘要

干涉式光纤陀螺仪（IFOGs）需要严格的本征频率调制匹配，因为即使很小的频率偏差也会降低系统的稳定性。本文提出了一种新型的双偏振调制IFOG。该调制单元由铌酸锂（LiNbO3）和两个极化旋转器组成，通过将调制从时域转换为空域实现灵活的频率调节。由于LiNbO3的正交光轴之间的反向电光效应，有效地抑制了后向散射噪声。实验结果表明，200 Hz的正弦调制足以实现200 m光纤线圈的偏置不稳定性（BI）为0.096°/h，角随机游走（ARW）为0.0092°/h /2。这种配置为高性能ifog提供了一种新颖的选择。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Development of a high-flexibility dual-polarization modulation in interferometric fiber optic gyroscopes

Interferometric fiber optic gyroscopes (IFOGs) require strict eigen-frequency modulation matching, as even minor frequency deviations degrade system stability. In this work, a novel IFOG with dual-polarization modulation is proposed. The modulation unit composed of a lithium niobate (LiNbO₃) and two polarization rotators achieves flexible frequency adjustment by converting modulation from time domain into spatial domain. Due to the reverse directed electro-optic effect between the orthogonal optical axes of LiNbO₃, the backscattering noise is effectively suppressed. Experimental results demonstrate that 200 Hz sine modulation is sufficient for a 200 m fiber coil, achieving bias instability (BI) of 0.096°/h and angular random walk (ARW) of 0.0092°/h^1/2. This configuration provides a novel option for high-performance IFOGs.

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来源期刊

Optics and Laser Technology 物理-光学

CiteScore

8.50

自引率

10.00%

发文量

1060

审稿时长

3.4 months

期刊介绍： Optics & Laser Technology aims to provide a vehicle for the publication of a broad range of high quality research and review papers in those fields of scientific and engineering research appertaining to the development and application of the technology of optics and lasers. Papers describing original work in these areas are submitted to rigorous refereeing prior to acceptance for publication. The scope of Optics & Laser Technology encompasses, but is not restricted to, the following areas: •development in all types of lasers •developments in optoelectronic devices and photonics •developments in new photonics and optical concepts •developments in conventional optics, optical instruments and components •techniques of optical metrology, including interferometry and optical fibre sensors •LIDAR and other non-contact optical measurement techniques, including optical methods in heat and fluid flow •applications of lasers to materials processing, optical NDT display (including holography) and optical communication •research and development in the field of laser safety including studies of hazards resulting from the applications of lasers (laser safety, hazards of laser fume) •developments in optical computing and optical information processing •developments in new optical materials •developments in new optical characterization methods and techniques •developments in quantum optics •developments in light assisted micro and nanofabrication methods and techniques •developments in nanophotonics and biophotonics •developments in imaging processing and systems