High temperature (up to 950 °C) sensor based on micro taper in-line fiber Mach-Zehnder interferometer

Liao, Yun-Cheng, Liu, Bin, Liu, Juan, Wan, Sheng-Peng, He, Xing-Dao, Yuan, Jinhui, Fan, Xinyu and Wu, Qiang (2019) High temperature (up to 950 °C) sensor based on micro taper in-line fiber Mach-Zehnder interferometer. Applied Sciences, 9. p. 2394. ISSN 2076-3417

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Official URL: https://doi.org/10.3390/app9122394

Abstract

A high temperature (up to 950 °C) sensor was proposed and demonstrated based on a micro taper in-line fiber Mach-Zehnder interferometer (MZI) structure. The fiber MZI structure comprises a single mode fiber (SMF) with two micro tapers along its longitudinal direction. Annealing at 1000 °C was applied to the fiber sensor to stabilize the temperature measurement. The experimental results showed that the sensitivity was 0.114 nm/°C and 0.116 nm/°C for heating and cooling cycle, respectively, and, after two days the sensor still has sensitivity of 0.11 nm/°C, showing good stability of the sensor. An probe-type fiber MZI is designed by cutting the sandwiched SMF, which has good linear temperature responses of 0.113 nm/°C over large temperature range from 89 °C to 950 °C. The probe-type fiber MZI temperature sensor is independent to the surrounding RI and immunity to strain. The developed sensor has a wide application prospect in the fields of high temperature hot gas flow and oil and gas field development.

Item Type: Article
Uncontrolled Keywords: optical fiber; Mach-Zehnder interferometer; high-temperature sensor
Subjects: H300 Mechanical Engineering
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Paul Burns
Date Deposited: 06 Jun 2019 15:08
Last Modified: 11 Oct 2019 09:17
URI: http://nrl.northumbria.ac.uk/id/eprint/39550

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