中国物理B ›› 2020, Vol. 29 ›› Issue (12): 120701-.doi: 10.1088/1674-1056/aba9c1

• GENERAL • 上一篇    下一篇

  

  • 收稿日期:2020-06-02 修回日期:2020-07-07 接受日期:2020-07-28 出版日期:2020-12-01 发布日期:2020-11-19

Fiber cladding SPR bending sensor characterized by two parameters

Chunlan Liu(刘春兰)1,2, Jiangxi Hu(胡江西)1, Yong Wei(魏勇)1,†, Yudong Su(苏于东)1, Ping Wu(吴萍)1, Lingling Li(李玲玲)1, and Xiaoling Zhao(赵晓玲)1   

  1. 1 College of Electronic & Information Engineering, Chongqing Three Gorges University, Chongqing 404100, China; 2 College of Electronic Engineering, Heilongjiang University, Harbin 150080, China
  • Received:2020-06-02 Revised:2020-07-07 Accepted:2020-07-28 Online:2020-12-01 Published:2020-11-19
  • Contact: Corresponding author. E-mail: weiyong@hrbeu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 61705025), the Natural Science Foundation of Heilongjiang Province, China (Grant No. F2018027), the Fund from Chongqing Municipal Key Laboratory of Institutions of Higher Education (Grant No. [2017]3), the Program of Chongqing Development and Reform Commission (Grant No. 2017[1007]), the Natural Science Foundation of Chongqing, China (Grant Nos. cstc2019jcyj-msxmX0431 and cstc2018jcyjAX0817), the Science and Technology Project Affiliated to the Education Department of Chongqing Municipality, China (Grant Nos. KJQN201801217, KJQN201901226, and KJ1710247), and the Fundamental Research Funds for Chongqing Three Gorges University of China (Grant No. 19ZDPY08).

Abstract: A fiber cladding surface plasmon resonance (SPR) bending sensor is realized by the cladding of the fiber structure. By employing coating film, the sensing zone is protected and the toughness of the sensor increases. Three different sensing probes are tested, the experiment results indicate that the two parameters (wavelength sensitivity and light intensity sensitivity) sensing performances of the eccentric butt joint structures are superior to that of hetero-core structure, and the SPR bending sensor based on hetero-core structure is stable and uneasy to damage. By employing hetero-core fiber and silver film, a fiber cladding SPR bending sensor with better stabilization and sensing performance is realized. The proposed fabricating method of sensing probe with coating film provides a new approach for fiber SPR-distributed bending sensor.

Key words: surface plasmon resonance (SPR), bending sensor, eccentric butt joint, hetero-core fiber

中图分类号:  (Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing)

  • 07.07.Df
42.81.Cn (Fiber testing and measurement of fiber parameters) 71.45.Gm (Exchange, correlation, dielectric and magnetic response functions, plasmons)