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Proceedings Paper

Magnetic field measurement by using a multilongitudinal mode fiber laser
Author(s): Ming Deng; Danhui Liu; Yong Zhao; Tao Zhu
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Paper Abstract

In this paper, a magnetic field sensor based on a multilongitudinal mode fiber laser has been proposed by employing a rotary apparatus modulated by an external magnetic field. Due to the remarkable birefringence change caused by the fiber twist, the polarimetric mode beat frequency (PMBF) of the laser is sensitive to the applied magnetic field intensity. Experimental results show that the PMBF linearly shifts with the variation of the magnetic field intensity and the sensitivity reaches up to 10.4 KHz/Oe in the range of 0 - 270Oe.

Paper Details

Date Published: 23 April 2017
PDF: 4 pages
Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103236N (23 April 2017); doi: 10.1117/12.2263751
Show Author Affiliations
Ming Deng, Chongqing Univ. (China)
Danhui Liu, Chongqing Univ. (China)
Yong Zhao, Chongqing Univ. (China)
Tao Zhu, Chongqing Univ. (China)

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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