Development of an optical fiber hydrophone with fiber Bragg grating

Takahashi, Nobuaki; Yoshimura, Kazuto; Takahashi, Shogo; Imamura, Kazuo

doi:10.1016/s0041-624x(99)00105-5

Cited by 90 publications

(47 citation statements)

References 5 publications

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“…A fast Bragg wavelength shift arising from ultrasonic vibration can be detected using the following two systems. [6] [7] One is an optical filter demodulation system.…”

Section: Ultrasonic Detection Using An Fbgmentioning

confidence: 99%

Development of fiber optic broadband vibration-detection system

Tsuda

Satô

Nakajima

et al. 2013

Synthesiology English edition

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“…A fast Bragg wavelength shift arising from ultrasonic vibration can be detected using the following two systems. [6] [7] One is an optical filter demodulation system.…”

Section: Ultrasonic Detection Using An Fbgmentioning

confidence: 99%

Development of fiber optic broadband vibration-detection system

Tsuda

Satô

Nakajima

et al. 2013

Synthesiology English edition

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“…Interferometric hydrophones, as a main branch of fiber optic hydrophones, have already been applied in some fields [7][8]. Nowadays, with the prevalence of fiber Bragg gratings (FBGs), many new advantages such as smaller size, reliability and stability in severe environment, multiplexing capability based on wavelength division multiplex (WDM) all have been introduced into FBG-based hydrophones [9][10][11]. The operating principle of FBG-based hydrophone is typically based on intensity modulation of light wave, caused by instant change of the transmission spectrum of sensor under the influence of acoustic field [12].…”

Section: Introductionmentioning

confidence: 99%

An optical fiber hydrophone using equivalent phase shift fiber Bragg grating for underwater acoustic measurement

et al. 2011

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An optical fiber hydrophone based on equivalent phase shift fiber Bragg grating (EPS-FBG) with temperature compensation package provides an improvement of sensitivity in underwater acoustic measurement at wide frequency range, from 2.5 kHz to 12 kHz. The acoustic pressure is transduced into elastic vibration of a circle metal disk, resulting in an intensity modulation of the reflected light wave back from fiber Bragg grating (FBG). Experiment shows that the packaged EPS-FBG hydrophone has a minimum detectable acoustic pressure of about 500 μPa/ Hz at 5 kHz and achieves about 18-dB improvement of acoustic pressure sensitivity compared with a regular apodized FBG hydrophone.

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“…In this paper, we report an in-line fiber-optic F-P (ILFP) sensor formed by hollowcore photonic crystal fiber (HCPCF) used for detection of ultrasound. Such a sensor has low temperature sensitivity and high resolution when compared with fiber Bragg gratings (FBG) [4] . Also, this in-line sensor is much smaller and more stable than those based on fiberoptic intrinsic interferometers such as Michelson interferometers and Mach-Zehnder interferometers [5,6] .…”

Section: Introductionmentioning

confidence: 99%