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Optimized all-fiber laser Doppler velocimeter with large depth of field
Hao, GeYang1; Cui, Ying2; Yang, Yucheng1; lv, Xiaopeng1; Wu, Guojun1
作者部门海洋光学技术研究室
2020-12
发表期刊Optical Fiber Technology
ISSN10685200
卷号60
产权排序1
摘要

Due to the low spatial coupling efficiency of optical fiber and large energy loss, the depth of field in the all-fiber laser Doppler velocimeter is short, and the focus needs to be adjusted before measurement, so it is impossible to continuously measure the velocity of object moving along the optical axis. To solve this problem, an all-fiber Doppler velocimeter based on the Mach-Zehnder interferometer structure is designed, also, in the optical antenna section, C-lens is used to change the divergence angle of the light coming out of the optical fiber. The optimized design achieves the detection with large depth of field. The experiment is designed to verify the intensity of the echo signal, signal-to-noise ratio (SNR) and the speed accuracy of the velocimeter taken in different depths of field. The test results show that the depth of field in this system is superior to 25 m. The SNR is stable around 16 dB with small fluctuation in the range of depth of field, and the speed accuracy is better than ±0.1 m/s. © 2020 Elsevier Inc.

关键词Laser Doppler velocimeter Optical fiber sensing Optical precision measurement Depth of field
DOI10.1016/j.yofte.2020.102333
收录类别SCI ; EI
语种英语
WOS记录号WOS:000598713600007
出版者Academic Press Inc.
EI入藏号20204409423547
引用统计
被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.opt.ac.cn/handle/181661/93774
专题海洋光学技术研究室
通讯作者Cui, Ying
作者单位1.Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Fazhan Street, Xi'an; 710119, China;
2.Engineering University of PAP, College of Equipment Management and Support, Wujing Street, Xi'an; 710086, China
推荐引用方式
GB/T 7714
Hao, GeYang,Cui, Ying,Yang, Yucheng,et al. Optimized all-fiber laser Doppler velocimeter with large depth of field[J]. Optical Fiber Technology,2020,60.
APA Hao, GeYang,Cui, Ying,Yang, Yucheng,lv, Xiaopeng,&Wu, Guojun.(2020).Optimized all-fiber laser Doppler velocimeter with large depth of field.Optical Fiber Technology,60.
MLA Hao, GeYang,et al."Optimized all-fiber laser Doppler velocimeter with large depth of field".Optical Fiber Technology 60(2020).
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