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Proceedings Paper

Simultaneous measurement of both magnetic field strength and temperature with a microfiber coupler based fiber laser sensor
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Paper Abstract

In this paper we propose and investigate a novel magnetic field sensor based of a ring erbium-doped fiber laser combined with a fiber Bragg grating and a Sagnac loop containing a microfiber coupler and magnetic fluid. In addition to the magnetic field sensing capability, the proposed structure can simultaneously provide temperature information. Thanks to the dual-ring structure of the MFC-Sagnac loop and the FBG-assisted resonant cavity, the output has two distinct laser peaks. Experimentally demonstrated magnetic field sensitivity of one of the laser peaks is 15 pm/mT in the magnetic field range from 0 to 100 mT. The spectral position of the second laser peak is independent on the magnetic field but shifts towards long wavelengths with a sensitivity of 13 pm/°C.

Paper Details

Date Published: 23 April 2017
PDF: 4 pages
Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103230H (23 April 2017); doi: 10.1117/12.2263678
Show Author Affiliations
Fangfang Wei, Dublin Institute of Technology (Ireland)
Arun Kumar Mallik, Dublin Institute of Technology (Ireland)
Dejun Liu, Dublin Institute of Technology (Ireland)
Wei Han, Dublin Institute of Technology (Ireland)
Xiaokang Lian, Dublin Institute of Technology (Ireland)
Gerald Farrell, Dublin Institute of Technology (Ireland)
Qiang Wu, Northumbria Univ. (United Kingdom)
Gang-Ding Peng, Univ. of New South Wales (Australia)
Yuliya Semenova, Dublin Institute of Technology (Ireland)


Published in SPIE Proceedings Vol. 10323:
25th International Conference on Optical Fiber Sensors
Youngjoo Chung; Wei Jin; Byoungho Lee; John Canning; Kentaro Nakamura; Libo Yuan, Editor(s)

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