Axial Micro-Strain Sensor Based on Resonance Demodulation Technology Via Dual-Mode CMECF

作     者：Xiao LIANG Tigang NING Jingcong LI Yang LI Zhiming LIU 

作者机构：College of ScienceMinzu University of ChinaBeijing 100081China Institute of Lightwave TechnologyBeijing Jiaotong UniversityBeijing 100044China The 41st Research Institute of CETCQingdao 266555China 

出 版 物：《Photonic Sensors》 (光子传感器（英文版）)

年 卷 期：2019年第9卷第1期

页      面：78-88页

核心收录：

学科分类：12[管理学] 1201[管理学-管理科学与工程(可授管理学、工学学位)] 0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：supported by the Major State Basic Research Development Program of China the “Double Tops” Construction Funds of Minzu University of China the Young Teachers’ Research Project of Minzu University of China by the Fundamental Research Funds for the Central Universities, China 

主　　题：Few-mode fiber fiber sensor MZI axial micro-strain 

摘      要：This paper firstly and experimentally demonstrates an in-fiber axial micro-strain sensing head,combined with a Mach-Zehnder interferometer(MZI)based on the concentric multilayer elliptical-core fiber(CMECF).This MZI with a high extinction ratio(about 15dB)is successfully achieved with a CMECF-single mode fiber-CMECF(CSC)*** MZI sensor theory and the resonance demodulation technology are systematically described in this *** this CSC structure, two sections of the CMECF have a role as the mode generator and coupler,***01 and LPlleven,which have similar excitation coefficients,are two dominated propagating mode groups supported in the *** account of the distinct dual-mode property,a good stability of this sensor is *** detected resonance in the MZI shifts as the axial micro-strain variated due to the strong interaction between higher order *** sensitivity of^1.78pm/με is experimentally achieved within the range of 0με-1250με,meanwhile,the intensity fluctuation is below 0.38dB.