A New Approach of Large Diameter Polymer-Coated Fiber Laser Hydrophone

Vivek, K; Rajesh, R.; Sreehari, C. V.; Sham, Kumar S.; Shajahan, K.; Praveen, T. V.; Santhanakrishnan, T.; Moosad, K. P. B.

doi:10.1109/jlt.2017.2736059

Cited by 17 publications

(2 citation statements)

References 26 publications

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“…But those coatings generally may damage the laser due to the differential strain. Hence, its usefulness as an effective packaging for acoustic sensors is not much tested [21]. Another method is to enhance the strain of the DFB fiber laser by increasing the force bearing area.…”

Section: Introductionmentioning

confidence: 99%

Study on the Characters of Phase-Shifted Fiber Bragg Grating in Asymmetric Perturbation and Its Application in Fiber Laser Acoustic Sensor

Zhao

Zhang

et al. 2018

Photonic Sens

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A  phase-shifted fiber Bragg grating theoretical model is established, and the effects of an asymmetric and symmetrical perturbation field on a phase-shifted fiber Bragg grating are investigated in this paper. The trends of wavelength shifting caused by effective refraction index of phase shift grating in symmetric and asymmetric acoustic field are investigated in detail. Then, the fiber laser acoustic sensors packaged in asymmetric and symmetrical structures are designed and tested, respectively. The results show that the acoustic response of the wavelength of the distributed feedback (DFB) fiber laser (FL) in an asymmetric packaging structure is much more sensitive than in that in the symmetrical structure. The sensor packaged in the asymmetrical structure has a better low frequency (0 Hz-500 Hz) performance and a higher sensitivity than that in the symmetrical structure, and the sensitivity is improved about 15 dB in average and 32.7 dB in maximum. It provides a new method to improve the sensitivity of the fiber acoustic sensor.

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Section: Introductionmentioning

confidence: 99%

Study on the Characters of Phase-Shifted Fiber Bragg Grating in Asymmetric Perturbation and Its Application in Fiber Laser Acoustic Sensor

Zhao

Zhang

et al. 2018

Photonic Sens

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“…Zhang et al [5] presented a DFB fiber laser hydrophone with enhanced sensitivity based on double diaphragms. Lyu et al [6] demonstrated the ability of the DBR fiber laser sensor in dual-frequency ultrasound measurement. Meanwhile, fiber laser sensors for magnetic field detection have been studied over the years.…”

mentioning

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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Interrogation techniques for π-phase-shifted fiber Bragg grating sensor: A review

Deepa

Das

2020

Sensors and Actuators A: Physical

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A New Approach of Large Diameter Polymer-Coated Fiber Laser Hydrophone

Cited by 17 publications

References 26 publications

Study on the Characters of Phase-Shifted Fiber Bragg Grating in Asymmetric Perturbation and Its Application in Fiber Laser Acoustic Sensor

Study on the Characters of Phase-Shifted Fiber Bragg Grating in Asymmetric Perturbation and Its Application in Fiber Laser Acoustic Sensor

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

Interrogation techniques for π-phase-shifted fiber Bragg grating sensor: A review

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