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

被引：53

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

页码：8598 / 8607

页数：10

共 14 条

[1] Analytical model for injection-seeded erbium-doped fiber ring lasers [J].