中国物理B ›› 2023, Vol. 32 ›› Issue (3): 30702-030702.doi: 10.1088/1674-1056/ac7e3b

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Fiber cladding dual channel surface plasmon resonance sensor based on S-type fiber

Yong Wei(魏勇), Xiaoling Zhao(赵晓玲), Chunlan Liu(刘春兰), Rui Wang(王锐), Tianci Jiang(蒋天赐), Lingling Li(李玲玲), Chen Shi(石晨), Chunbiao Liu(刘纯彪), and Dong Zhu(竺栋)   

  1. College of Electronic and Information Engineering, Chongqing Three Gorges University, Chongqing 404100, China
  • 收稿日期:2022-03-16 修回日期:2022-06-24 接受日期:2022-07-05 出版日期:2023-02-14 发布日期:2023-02-21
  • 通讯作者: Chunlan Liu E-mail:lclliuchunlan@163.com
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 61705025), Chongqing Natural Science Foundation (Grant Nos. cstc2019jcyjmsxmX0431 and cstc2018jcyjAX0817), the Science and Technology Project Affiliated to the Education Department of Chongqing Municipality (Grant Nos. KJQN201801217, KJQN201901226, KJQN202001214, and KJ1710247), Chongqing Key Laboratory of Geological Environment Monitoring and Disaster Early-Warning in Three Gorges Reservoir Area (Grant Nos. ZD2020A0103 and ZD2020A0102), and Fundamental Research Funds for Chongqing Three Gorges University of China (Grant No. 19ZDPY08).

Fiber cladding dual channel surface plasmon resonance sensor based on S-type fiber

Yong Wei(魏勇), Xiaoling Zhao(赵晓玲), Chunlan Liu(刘春兰), Rui Wang(王锐), Tianci Jiang(蒋天赐), Lingling Li(李玲玲), Chen Shi(石晨), Chunbiao Liu(刘纯彪), and Dong Zhu(竺栋)   

  1. College of Electronic and Information Engineering, Chongqing Three Gorges University, Chongqing 404100, China
  • Received:2022-03-16 Revised:2022-06-24 Accepted:2022-07-05 Online:2023-02-14 Published:2023-02-21
  • Contact: Chunlan Liu E-mail:lclliuchunlan@163.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 61705025), Chongqing Natural Science Foundation (Grant Nos. cstc2019jcyjmsxmX0431 and cstc2018jcyjAX0817), the Science and Technology Project Affiliated to the Education Department of Chongqing Municipality (Grant Nos. KJQN201801217, KJQN201901226, KJQN202001214, and KJ1710247), Chongqing Key Laboratory of Geological Environment Monitoring and Disaster Early-Warning in Three Gorges Reservoir Area (Grant Nos. ZD2020A0103 and ZD2020A0102), and Fundamental Research Funds for Chongqing Three Gorges University of China (Grant No. 19ZDPY08).

摘要: Fiber cladding surface plasmon resonance (SPR) sensors have few structures, and a clad SPR sensor based on S-type fiber is proposed in this paper. This new type of fiber cladding SPR sensor was formed by electrofusing an S-shaped structure on the fiber to couple the light in the fiber core to the cladding. In this paper, the effects of fiber parameters on the performance of the sensor were studied by simulation and experiment. Based on the conclusion that the smaller the core diameter is, the closer the working band of the SPR resonance is to long wavelengths, and that the geometric characteristics mean that a multimode fiber can receive the fiber cladding light from a small core diameter few-mode fiber, a dual channel SPR sensor with a double S-type fiber cascade was proposed. In the refractive index detection range of 1.333-1.385 refractive index units (RIU), the resonant working band of channel I is 627.66 nm-759.78 nm, with an average sensitivity of 2540.77 nm/RIU, and the resonant working band of channel II is 518.24 nm-658.2 nm, with an average sensitivity of 2691.54 nm/RIU. The processing method for the S-type fiber cladding SPR sensor is simple, effectively solving the problem of this type of SPR sensor structure and the difficult realization of a dual channel. The sensor is expected to be used in the fields of medical treatment and biological analysis.

关键词: surface plasmon resonance (SPR), S-type structure, dual channel, cladding fiber SPR sensor

Abstract: Fiber cladding surface plasmon resonance (SPR) sensors have few structures, and a clad SPR sensor based on S-type fiber is proposed in this paper. This new type of fiber cladding SPR sensor was formed by electrofusing an S-shaped structure on the fiber to couple the light in the fiber core to the cladding. In this paper, the effects of fiber parameters on the performance of the sensor were studied by simulation and experiment. Based on the conclusion that the smaller the core diameter is, the closer the working band of the SPR resonance is to long wavelengths, and that the geometric characteristics mean that a multimode fiber can receive the fiber cladding light from a small core diameter few-mode fiber, a dual channel SPR sensor with a double S-type fiber cascade was proposed. In the refractive index detection range of 1.333-1.385 refractive index units (RIU), the resonant working band of channel I is 627.66 nm-759.78 nm, with an average sensitivity of 2540.77 nm/RIU, and the resonant working band of channel II is 518.24 nm-658.2 nm, with an average sensitivity of 2691.54 nm/RIU. The processing method for the S-type fiber cladding SPR sensor is simple, effectively solving the problem of this type of SPR sensor structure and the difficult realization of a dual channel. The sensor is expected to be used in the fields of medical treatment and biological analysis.

Key words: surface plasmon resonance (SPR), S-type structure, dual channel, cladding fiber SPR sensor

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)