光学
激光器
干涉测量
光纤激光器
分布反馈激光器
光纤
流离失所(心理学)
光纤布拉格光栅
光纤传感器
物理
材料科学
保偏光纤
心理学
心理治疗师
作者
Desheng Zhu,Yuanyang Zhao,Yourui Tu,Hongtao Li,Lin Xu,Benli Yu,Liang Lü
出处
期刊:Optics Letters
[The Optical Society]
日期:2020-12-24
卷期号:46 (1): 114-114
被引量:21
摘要
A fiber autodyne laser feedback displacement sensor based on the effect of the frequency shift is demonstrated. The all-fiber structure enables our system to be easily employed in diverse complex and narrow scenes. By virtue of adopting an ultra-high sensitivity distributed Bragg reflector (DBR) fiber laser as the laser source and the frequency–shift technology to avoid the phenomenon that the measured signal of the low frequency is submerged in the noise, the measurement of the sub-picometer displacement under weak feedback condition has been achieved, which shows a great potential in the field of micro-vibration measurement. Moreover, the proposed system has advantages such as simplicity in system structure, low cost of implementation, and immunity to electromagnetic interference.
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