Two-dimensional flow vector measurement based on all-fiber laser feedback frequency-shifted multiplexing technology  

作　　者：LEI ZHANG JIALIANG LV YUNKUN ZHAO JIE LI KEYAN LIU QI YU HONGTAO LI BENLI YU LIANG LU 

机构地区：[1]Information Materials and Intelligent Sensing Laboratory of Anhui Province,Anhui University,Hefei 230601,China [2]Key Laboratory of Opto-Electronic Information Acquisition and Manipulation of Ministry of Education,Anhui University,Hefei 230601,China [3]School of Physics and Optoelectronic Engineering,Anhui University,Hefei 230601,China [4]School of Optics and Photonics,Beijing Institute of Technology,Beijing 100081,China

出　　处：《Photonics Research》2024年第7期1371-1378,共8页光子学研究（英文版）

基　　金：National Natural Science Foundation of China(62275001, 62105001, 62205001)。

摘　　要：The decomposition and identification of signals are crucial for flow vector acquisition in a multi-dimensional measurement. Here, we proposed a two-dimensional(2D) flow vector measurement system based on all-fiber laser feedback frequency-shifted multiplexing technology. The reliable performance of the system is characterized by experimental verification and numerical simulation. An orthogonal dual-beam structure is employed to eliminate the impact of an unknown incident angle in the practical application. Meanwhile, the vector velocity signals in 2D can be decomposed into one-dimensional(1D) scalar signals by adopting the frequency-shifted multiplexing,which makes it easy to obtain the vector information and velocity distribution of fluid motion through the self-mixing interference frequency spectrum.

关 键 词：FIBER shifted FLOW 

分 类 号：TN249[电子电信—物理电子学]