title: All-Fiber Configuration Laser Self-Mixing Doppler Velocimeter Based on Distributed Feedback Fiber Laser.
abstract: In this paper, a novel velocimeter based on laser self-mixing Doppler technology has been developed for speed measurement. The laser employed in our experiment is a distributed feedback (DFB) fiber laser, which is an all-fiber structure using only one Fiber Bragg Grating to realize optical feedback and wavelength selection. Self-mixing interference for optical velocity sensing is experimentally investigated in this novel system, and the experimental results show that the Doppler frequency is linearly proportional to the velocity of a moving target, which agrees with the theoretical analysis commendably. In our experimental system, the velocity measurement can be achieved in the range of 3.58 mm/s-2216 mm/s with a relative error under one percent, demonstrating that our novel all-fiber configuration velocimeter can implement wide-range velocity measurements with high accuracy.
authors.affiliation: Key Laboratory of Opto-Electronic Information Acquisition and Manipulation of Ministry of Education, Anhui University, Jiulong Road 111#, Hefei 230601, China. shuangwu1974@163.com.
authors.forename: Shuang
authors.initials: S
authors.lastname: Wu
authors.affiliation: Key Laboratory of Opto-Electronic Information Acquisition and Manipulation of Ministry of Education, Anhui University, Jiulong Road 111#, Hefei 230601, China. dehuiwangahu@163.com.
authors.forename: Dehui
authors.initials: D
authors.lastname: Wang
authors.affiliation: Key Laboratory of Opto-Electronic Information Acquisition and Manipulation of Ministry of Education, Anhui University, Jiulong Road 111#, Hefei 230601, China. xiangrong_1981@163.com.
authors.forename: Rong
authors.initials: R
authors.lastname: Xiang
authors.affiliation: Key Laboratory of Opto-Electronic Information Acquisition and Manipulation of Ministry of Education, Anhui University, Jiulong Road 111#, Hefei 230601, China. zhoujunfeng215@163.com.
authors.forename: Junfeng
authors.initials: J
authors.lastname: Zhou
authors.affiliation: Key Laboratory of Opto-Electronic Information Acquisition and Manipulation of Ministry of Education, Anhui University, Jiulong Road 111#, Hefei 230601, China. myc@ahu.edu.cn.
authors.forename: Yangcheng
authors.initials: Y
authors.lastname: Ma
authors.affiliation: Key Laboratory of Environmental Optics and Technology, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China. hqgui@aiofm.ac.cn.
authors.forename: Huaqiao
authors.initials: H
authors.lastname: Gui
authors.affiliation: Key Laboratory of Environmental Optics and Technology, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China. jgliu@aiofm.ac.cn.
authors.forename: Jianguo
authors.initials: J
authors.lastname: Liu
authors.affiliation: State Key Laboratory of Transducer Technology, Institute of Intelligent Machines, Chinese Academy of Sciences, 350 Shu Shang Hu Road, Hefei 230031, China. hqwang@iim.ac.cn.
authors.forename: Huanqin
authors.initials: H
authors.lastname: Wang
authors.affiliation: Key Laboratory of Opto-Electronic Information Acquisition and Manipulation of Ministry of Education, Anhui University, Jiulong Road 111#, Hefei 230601, China. lianglu@ahu.edu.cn.
authors.forename: Liang
authors.initials: L
authors.lastname: Lu
authors.affiliation: Key Laboratory of Opto-Electronic Information Acquisition and Manipulation of Ministry of Education, Anhui University, Jiulong Road 111#, Hefei 230601, China. benliyu@ahu.edu.cn.
authors.forename: Benli
authors.initials: B
authors.lastname: Yu
keywords: DFB fiber laser; Laser Doppler Velocimeter (LDV); self-mixing effect