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基于光学微腔模式劈裂的角速率测量方法

杨照华 韩晓伟 杨旭

杨照华, 韩晓伟, 杨旭等 . 基于光学微腔模式劈裂的角速率测量方法[J]. 北京航空航天大学学报, 2015, 41(5): 770-775. doi: 10.13700/j.bh.1001-5965.2014.0329
引用本文: 杨照华, 韩晓伟, 杨旭等 . 基于光学微腔模式劈裂的角速率测量方法[J]. 北京航空航天大学学报, 2015, 41(5): 770-775. doi: 10.13700/j.bh.1001-5965.2014.0329
YANG Zhaohua, HAN Xiaowei, YANG Xuet al. Angular rate sensing based on mode splitting in an optical microresonator[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(5): 770-775. doi: 10.13700/j.bh.1001-5965.2014.0329(in Chinese)
Citation: YANG Zhaohua, HAN Xiaowei, YANG Xuet al. Angular rate sensing based on mode splitting in an optical microresonator[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(5): 770-775. doi: 10.13700/j.bh.1001-5965.2014.0329(in Chinese)

基于光学微腔模式劈裂的角速率测量方法

doi: 10.13700/j.bh.1001-5965.2014.0329
基金项目: 国家自然科学基金(61473022);北京航空航天大学基本科研业务费(YWF-14-YQGD-007)
详细信息
    通讯作者:

    杨照华(1975—),女,黑龙江哈尔滨人,副教授,yangzh@buaa.edu.cn,主要研究方向为微光学传感.

  • 中图分类号: V24

Angular rate sensing based on mode splitting in an optical microresonator

  • 摘要: 传统的光学谐振陀螺(ROG)把背向散射作为重要误差源之一,须尽量抑制其影响.在光学谐振腔的品质因数极高时,背散光得到足够的增强,不能再被简单地视为噪声.背向散射会引发模式劈裂,所形成的劈裂模谐振频率会随腔体旋转角速率发生变化.结合Sagnac效应,修正有源光学谐振腔模式劈裂传感原理的数学模型,推导出腔体旋转角速率与劈裂值的映射关系式.通过仿真分析不同掺杂增益系数以及不同光纤锥耦合强度下的反射谱线,发现谐振腔工作在欠耦合区域更适合角速率测量.掺杂增益介质可以提高品质因数,减小谐振峰线宽,使得模式劈裂谱线更容易观测.理论与计算机仿真分析表明品质因数为108的光学微腔测量分辨率可达10-6(°)/s,所提出的角速率敏感机制很有应用前景.

     

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出版历程
  • 收稿日期:  2014-06-06
  • 修回日期:  2014-07-25
  • 刊出日期:  2015-05-20

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