Simultaneous measurement of refractive index and temperature based on a side-polish and V-groove plastic optical fiber SPR sensor

被引：40

作者：

Chuanxin, Teng ^{[1
]}

Shao, Peng ^{[1
]}

Min, Rui ^{[2
]}

Deng, Hongchang ^{[1
]}

Chen, Ming ^{[1
]}

Deng, Shijie ^{[1
]}

Hu, Xuehao ^{[3
]}

Marques, Carlos ^{[4
,5
]}

Yuan, Libo ^{[1
]}

机构：

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

[2] Beijing Normal Univ, Ctr Cognit & Neuroergon, State Key Lab Cognit Neurosci & Learning, Zhuhai 519087, Peoples R China

[3] Univ Mons, Dept Electromagnetism & Telecommun, Blvd Dolez 31, B-7000 Mons, Belgium

[4] Univ Aveiro, I3N, P-3810193 Aveiro, Portugal

[5] Univ Aveiro, Phys Dept, P-3810193 Aveiro, Portugal

来源：

OPTICS LETTERS | 2023年 / 48卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Fiber optic sensors - Plastic optical fibers - Polydimethylsiloxane - Probes - Silicones - Surface plasmon resonance - Temperature measurement;

D O I：

10.1364/OL.478685

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A simple plastic optical fiber (POF) based surface plas-mon resonance (SPR) sensor is proposed and demonstrated for simultaneous measurement of refractive index (RI) and temperature. The sensor consists of a series of V -grooves along the POF and a side-polish structure at the other side of the fiber. The V-groove structure can alter the SPR excitation angle and act as a mode filter, effec-tively enhancing the SPR effect and narrowing the SPR wavelength width. After coating a layer of thermosensitive material-polydimethylsiloxane (PDMS) film on half part of the fiber probe, a dual-parameter sensor probe is obtained for RI and temperature measurement. Experimental results show the RI sensitivity of the prepared probe can reach 1546 nm/RIU in the RI range of 1.335-1.37 RIU and the temperature sensitivity is -0.83 nm/degrees C in the temperature range of 20-80 degrees C. The sensor is simple in structure and low cost, and has potential applications in the biochemical sens-ing fields. (c) 2023 Optica Publishing Group

引用

页码：235 / 238

页数：4

共 16 条

[1] Surface plasmon subwavelength optics [J].