Design of dual-core photonic crystal fiber for temperature sensor based on surface plasmon resonance effect

被引：22

作者：

Mei, Chao ^{[1
]}

Wu, Yuan ^{[1
]}

Qiu, Shi ^{[2
]}

Yuan, Jinhui ^{[1
,2
]}

Zhou, Xian ^{[1
]}

Long, Keping ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing USTB, Res Ctr Convergence Networks & Ubiquitous Serv, Beijing 100083, Peoples R China

[2] Beijing Univ Posts & Telecommun, State Key Lab Informat Photon & Opt Commun, Beijing, Peoples R China

来源：

OPTICS COMMUNICATIONS | 2022年 / 508卷

基金：

中国国家自然科学基金;

关键词：

Photonic crystal fiber; Surface plasmon resonance; Temperature sensor; BIOSENSOR;

D O I：

10.1016/j.optcom.2021.127838

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A toluene-ethanol filled dual-core photonic crystal fiber (PCF) based on surface plasmon resonance effect is designed for temperature sensing. The toluene with higher refractive index is injected into the central air hole in order to support the core mode. In contrast, the ethanol, whose refractive index is lower, is injected into the sideward air hole coated by gold film to support the mode induced by surface plasmon polariton. The resonance characteristics of surface plasmon in the designed PCF are numerically investigated by using finite element method. It is shown that the influences of structure parameters on temperature sensing performance are different. On the other hand, the resulting resonance wavelength of the spectrum of confinement loss moves to longer wavelength to satisfy the phase matching when the detective temperature is increased. After optimizing structure parameters, the sensitivity of temperature sensor can reach 6.32 nm/degrees C in the range from 10 degrees C to 70 degrees C, indicating its potential applications in temperature measurement with wide temperature range.

引用

页数：6

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