Simple tunable dual-wavelength fiber laser and multiple self-mixing interferometry to large step height measurement

被引：9
|
作者：
Dong, Lianlian [1 ]
Xie, Fang [1 ]
Ma, Sen [1 ]
Wang, Yunzhi [1 ]
Chen, Liang [1 ]
机构：
[1] Beijing Jiaotong Univ, Sch Sci, Dept Phys, Opt Sci & Technol Lab, Beijing 100044, Peoples R China
来源：
OPTICS EXPRESS | 2016年 / 24卷 / 19期
基金：
北京市自然科学基金;
关键词：
FEEDBACK INTERFEROMETRY; PHASE DIFFERENCE; EXTERNAL-CAVITY; RING LASER;
D O I：
10.1364/OE.24.021880
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A simple tunable dual-wavelength fiber laser was developed and multiple self-mixing interferometry to large step height measurement was demonstrated. The fiber laser, which can emit two wavelengths without laser mode competition, is composed of a single fiber ring cavity and two fiber branches. Each branch includes a length of erbium-doped fiber and a fiber Bragg grating. Large step heights can be measured using multiple self-mixing interference of the two wavelengths. The maximum height that can be measured is half synthetic wavelength of the two wavelengths. A step height of 2mm constructed with two gauge blocks has been measured. The standard deviation of measurement results is 2.5nm. (C) 2016 Optical Society of America
引用
收藏
页码：21880 / 21885
页数：6
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