High sensitivity temperature sensor based on a helically twisted photonic crystal fiber

Shi Qiu, Jinhui Yuan*, Sainan Duan, Xian Zhou, Chao Mei, Yuwei Qu, Binbin Yan, Qiang Wu, Kuiru Wang, Xinzhu Sang, Keping Long, Chongxiu Yu

*Corresponding author for this work

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Abstract

Helically twisted photonic crystal fibers (HT-PCFs) provide additional opportunities for controlling the light propagation characteristics and improving the sensing performances. In this paper, a toluene and gold wire-filled HT-PCF was proposed and designed for high sensitivity temperature sensing. The influences of the structure parameters on the confinement loss, sensitivity, and resolution of the proposed HT-PCF were investigated. For the optimized HT-PCF, the average sensitivity is as high as 14.35 and 17.29 nm/℃ in the temperature range of −20 to 20 ℃ and 20 to 70 ℃, respectively. Moreover, the proposed HT-PCF-based temperature sensor is insensitive to the hydrostatic pressure. Finally, the detailed fabrication process of the toluene and gold wire-filled HT-PCF temperature sensor is proposed. It is believed that the proposed HT-PCF temperature sensor has potential applications in the fields of the environmental monitoring, medical diagnostics, etc.

Original languageEnglish
Article number104767
Number of pages9
JournalResults in Physics
Volume29
Early online date31 Aug 2021
DOIs
Publication statusPublished - 1 Oct 2021

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