DFB fiber laser sensor for simultaneous measurement of acoustic and magnetic fields

被引：0
|
作者：
马瑞 [1 ,2 ]
张文涛 [1 ,2 ]
黄稳柱 [1 ,2 ]
李芳 [1 ,2 ]
机构：
[1] State Key Laboratory of Transducer Technology, Institute of Semiconductors, Chinese Academy of Sciences
[2] College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences
来源：
Chinese Optics Letters | 2018年 / 16卷 / 06期
关键词：
length; DFB fiber laser sensor for simultaneous measurement of acoustic and magnetic fields;
D O I：
暂无
中图分类号：
TN248 [激光器]; TP212 [发送器（变换器）、传感器];
学科分类号：
080202 ; 0803 ; 080401 ; 080901 ;
摘要：
A novel distributed feedback(DFB) fiber laser sensor, which can measure acoustic and magnetic fields simultaneously, is proposed. The magnetic field can be measured by detecting the change of resonant frequency of the fiber laser, and the acoustic pressure can be measured by detecting the phase shift of the fiber laser. Both of the signals can be simultaneously demodulated in the frequency domain without affecting each other. Experimental studies show that the acoustic pressure sensitivity of this sensor is about-130 d B(0 dB re 1 pm∕μPa) and the sensor has a good linearity with a magnetic field sensitivity of 0.57 Hz∕m T.
引用
收藏
页码：28 / 32
页数：5
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