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DFB fiber laser sensor for simultaneous measurement of acoustic and magnetic fields
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作者 Rui Ma Wentao Zhang +1 位作者 Wenzhu Huang Fang Li 《Chinese Optics Letters》 SCIE EI CAS CSCD 2018年第6期24-28,共5页
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 t... 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∕mT. 展开更多
关键词 LENGTH DFB fiber laser sensor for simultaneous measurement of acoustic and magnetic fields
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