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All-fibre temperature sensor employing photonic crystal fibre-based Mach–Zehnder interferometer structure

GAOLIN QIN1, QUANCAI LI1, WEI WEI1, JUNFA DUAN1,*

Affiliation

  1. School of Mechanical Engineering, North China University of Water Resources and Electric Power, Zhengzhou, 450045, China

Abstract

In this study, an all-fibre temperature sensor employing a photonic crystal fibre (PCF)-based Mach–Zehnder interferometer was manufactured by cascading single-mode fibre–multimode fibre (MMF)–PCF–MMF fusion splicing structure. For the sensor, the PCF length was 3 cm, and an interferometer comb spectrum free spectral range of 5.8 nm were realised. In the experiment, the temperature sensing characteristics during heating and cooling were measured; the sensitivity and linearity were 36 pm/°C within 30–60°C and >0.9715, respectively. Moreover, the sensor exhibited good stability and repeatability. The results demonstrate the satisfactory performance of the proposed sensor for temperature sensor applications.

Keywords

Mach–Zehnder interferometer, Photonic crystal fibre, Single-mode fibre, Temperature sensing.

Citation

GAOLIN QIN, QUANCAI LI, WEI WEI, JUNFA DUAN, All-fibre temperature sensor employing photonic crystal fibre-based Mach–Zehnder interferometer structure, Optoelectronics and Advanced Materials - Rapid Communications, 16, 3-4, March-April 2022, pp.96-101 (2022).

Submitted at: Oct. 4, 2021

Accepted at: April 7, 2022