光学
干涉测量
传输(电信)
灵敏度(控制系统)
激光器
线性
补偿(心理学)
光纤
光路长度
光路
多模光纤
材料科学
物理
纤维
保偏光纤
光纤传感器
单模光纤
光纤布拉格光栅
作者
Yifan Wang,Yuhang Li,Xin Xu,Mingwang Tian,Kaiyi Zhu,Yidong Tan
出处
期刊:Optics Letters
[The Optical Society]
日期:2021-02-15
卷期号:46 (4): 821-821
被引量:4
摘要
A novel, to the best of our knowledge, interferometry based on the laser feedback technique with long transmission distance is proposed. The system has the advantages of high sensitivity for uncooperative targets and a simple structure. Also, the quasi-common path orthogonally polarized light compensation method is designed to compensate for the drift in long-distance transmission and achieves more than 200 times reduction experimentally. Using a copper block as a target, the displacement resolution of 20 nm is demonstrated experimentally with 300 m transmission distance. The sub-microwatt power consumption of the measurement beam indicates the high sensitivity of the interferometry. The performance, in terms of linearity, is also evaluated. Although a lot needs to be improved, the proposed method is promising for further development toward practical applications, like sensors in remote, nuclear radiative, or other harsh conditions.
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