Self-mixing interference measurement system of a fiber ring laser with ultra-narrow linewidth

被引：52
|
作者：
Lu, Liang [1 ]
Yang, Jingyu [1 ]
Zhai, Longhua [1 ]
Wang, Rui [1 ]
Cao, Zhigang [1 ]
Yu, Benli [1 ]
机构：
[1] Anhui Univ, Key Lab Optoelect Informat Acquisit & Manipulat, Minist Educ, Hefei 230601, Anhui, Peoples R China
来源：
OPTICS EXPRESS | 2012年 / 20卷 / 08期
基金：
高等学校博士学科点专项科研基金;
关键词：
DIODE-LASER; VELOCIMETRY; VIBRATION;
D O I：
10.1364/OE.20.008598
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A novel device for self-mixing interference measurement based on the fiber ring laser with ultra-narrow linewidth was investigated for the first time. In order to achieve requirement of our measurement system, a saturable-absorber which consists of a segment un-pumped erbium-doped fiber and a fiber Bragg grating is employed to provide a fine mode selection and guarantee the ultra-narrow linewidth operation. Results demonstrate that the signal-to-noise ratio of the self-mixing interference signal could be enhanced from 18.01 dB to 38.35 dB by inserting a saturable-absorber in the laser cavity. It is in good agreement with the theoretical analysis and proved potential using in self-mixing interference measurement system for high sensitivity and remote measurement. (C) 2012 Optical Society of America
引用
收藏
页码：8598 / 8607
页数：10
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