Highly sensitive temperature sensing based on all-solid cladding dual-core photonic crystal fiber filled with the toluene and ethanol

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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

An all-solid cladding dual-core photonic crystal fiber (DC-PCF) filled with toluene and ethanol is proposed for the temperature sensing. The all-solid cladding is formed by using the fluorine-doped silica glass instead of the air holes in the cladding region. By selectively filling the toluene and ethanol into the three air holes near the core region, the characteristic of the temperature sensing is numerically investigated. The simulation results show that the average sensitivity of the temperature sensing can achieve −11.64 and −7.41 nm/°C in the temperature ranges from 0 to 70 °C and −80 to 0 °C, respectively, when the length of the DC-PCF is as short as 1.6 mm. The maximum sensitivity in the considered temperature ranges can be up to −15 and −9 nm/°C, respectively. Moreover, the proposed temperature sensor is insensitive to the hydrostatic pressure.
Original languageEnglish
Article number126357
JournalOptics Communications
Volume477
Early online date10 Aug 2020
DOIs
Publication statusPublished - 15 Dec 2020

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