Magnetic field measurement by using a multilongitudinal mode fiber laser

Ming Deng; Danhui Liu; Yong Zhao; Tao Zhu

doi:10.1117/12.2263751

23 April 2017 Magnetic field measurement by using a multilongitudinal mode fiber laser

Ming Deng, Danhui Liu, Yong Zhao, Tao Zhu

Proceedings Volume 10323, 25th International Conference on Optical Fiber Sensors; 103236N (2017) https://doi.org/10.1117/12.2263751
Event: 25th International Conference on Optical Fiber Sensors, 2017, Jeju, Korea, Republic of

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.

Citation Download Citation

Ming Deng, Danhui Liu, Yong Zhao, and Tao Zhu "Magnetic field measurement by using a multilongitudinal mode fiber laser", Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103236N (23 April 2017); https://doi.org/10.1117/12.2263751

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