灵敏度(控制系统)
极化(电化学)
物理
核磁共振
光学
化学
电子工程
工程类
物理化学
作者
Dong He,Yuwen Cao,Tong Zhou,Chao Peng,Zhengbin Li
出处
期刊:Optics Express
[The Optical Society]
日期:2020-11-02
卷期号:28 (23): 34717-34717
被引量:10
摘要
Portable sensors with a sufficiently high sensitivity in detecting small rotational motions have attracted significant attention in the field of rotational seismology. In this study, we propose and demonstrate a dual-polarization fiber optic gyroscope (IFOG) with a portable-sized fiber coil. Excess relative intensity noise (RIN) is effectively compensated for owing to the opposite parities and strong correlation of the two orthogonal polarized light, whereas other noises including coherent phase noise and thermal phase noise have also been handled well. In a test on detecting the rotation rate of the Earth, an enhanced sensitivity of 20 n r a d / s / H z over a frequency range of 0.01 Hz to 30 Hz was demonstrated using the proposed design with an enclosed area of only 68 m 2 .
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