16-Channel Fiber Laser Sensing System Based on Phase Generated Carrier Algorithm

Fang, Gaosheng; Xu, Tuanwei; Li, Fang

doi:10.1109/lpt.2013.2282400

Cited by 8 publications

(1 citation statement)

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“…The fiber laser demodulator consists of a 980 nm pumping light source and several fiber optic devices, such as isolators, fiber coupler, wavelength division multiplexers (WDMs), photoelectric detectors, an unbalanced Mach-Zehnder fiber interferometer, and a data acquisition system (DAQ). The interrogation of this sensor can be achieved by phasegenerated carrier (PGC) demodulation [15] . The demodulation results can be displayed through the computer both in the time domain and frequency domain.…”

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confidence: 99%

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

Zhang

Huang

et al. 2018

中国光学快报

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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 dB (0 dB re 1 pm∕μPa) and the sensor has a good linearity with a magnetic field sensitivity of 0.57 Hz∕mT.

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confidence: 99%