Surface plasmon resonance sensor based on a dual-hole optical fiber for temperature and refractive index detection

被引：0

作者：

Cao, Shichen ^{[1
,2
]}

Tang, Yi ^{[1
,2
]}

Chen, Ming ^{[1
,2
]}

Cheng, Yu ^{[1
,2
]}

Liu, Houquan ^{[1
,2
]}

Teng, Chuanxin ^{[1
,2
]}

Yang, Hongyan ^{[1
,2
]}

Deng, Hongchang ^{[1
,2
]}

Yuan, Libo ^{[1
,2
]}

机构：

[1] Guilin Univ Elect Technol, Sch Optoelect Engn, Guilin 541004, Peoples R China

[2] Guilin Univ Elect Technol, Guangxi Key Lab Optoelect Informat Proc, Guilin 541004, Peoples R China

来源：

APPLIED OPTICS | 2025年 / 64卷 / 08期

基金：

中国国家自然科学基金;

关键词：

SPR SENSOR; SENSITIVITY;

D O I：

10.1364/AO.550090

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

This paper presents a surface plasmon resonance (SPR) sensor based on a dual-hole optical fiber, designed for the simultaneous measurement of refractive index (RI) and temperature. The sensor is fabricated by side-polishing the dual-hole fiber and coating gold and silver films in the left and right holes, respectively. Additionally, the right hole is filled with polydimethylsiloxane to enable dual-parameter detection. We analyzed the sensor's performance using the finite element analysis software COMSOL, and the results indicate a peak sensitivity reaching 3000 nm/RIU across an RI interval of 1.34-1.38, along with a temperature sensitivity measured at -4.5 nm/degrees C within a range spanning from 0 degrees C to 40 degrees C. The proposed dual-hole fiber SPR sensor features a simple structure and demonstrates high sensitivity and effective dual-parameter sensing capabilities. This provides an efficient solution for the simultaneous monitoring of temperature and RI, making it suitable for in situ measurements in applications such as chemical reagent preparation. (c) 2025 Optica Publishing Group. All rights, including for text and data mining (TDM), Artificial Intelligence (AI) training, and similar technologies, are reserved.

引用

页码：1783 / 1790

页数：8

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