Optimized all-fiber laser Doppler velocimeter with large depth of field

doi:10.1016/j.yofte.2020.102333

OPT OpenIR > 海洋光学技术研究室

	Optimized all-fiber laser Doppler velocimeter with large depth of field
	Hao, GeYang 1; Cui, Ying 2; Yang, Yucheng 1; lv, Xiaopeng 1; Wu, Guojun1
作者部门	海洋光学技术研究室
	2020-12
发表期刊	Optical Fiber Technology
ISSN	10685200
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
DOI	10.1016/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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