Fiber-optic hydrophone

Bucaro, J. A.; Dardy, H. D.; Carome, E. F.

doi:10.1121/1.381624

Cited by 302 publications

(103 citation statements)

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“…Acoustic sensors based on the interferometric detection of pressure-induced phase shift of light propagating inside an optical fiber can be dated back to over 30 years ago [1,2]. The phase accumulated by the fundamental mode through a fiber length L is given by…”

Section: Introductionmentioning

confidence: 99%

Detection of acoustic pressure with hollow-core photonic bandgap fiber

Pang¹,

Jin²

2009

Opt. Express

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Abstract:We report the results of our preliminary investigation on the use of hollow-core photonic bandgap fiber (HC-PBF) for hydrophone application. The response of the commercial HC-1550-02 fiber to acoustic pressure, in terms of normalized responsivity (NR), is measured to be -334.4dB re 1µPa -1 . This agrees well with the theoretically predicated value of -331.6dB re 1µPa -1 and is about 15dB higher than that of the conventional fiber (HNSM-155). With straightforward fiber structure modifications (thinner outer silica cladding and higher air-filling ratio of inner microstructured cladding), the NR could be further enhanced to310dB re 1µPa -1

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Section: Introductionmentioning

confidence: 99%

Detection of acoustic pressure with hollow-core photonic bandgap fiber

Pang¹,

Jin²

2009

Opt. Express

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“…There are developments of optical hydrophones that are promising [30,31], but apparently there have been no extensive in situ tests. As several acoustic test setups have been integrated in the infrastructure of existing Cherenkov experiments, the combination of acoustic and optical sensors into one sensor module is pursued [32].…”

Section: Sensorsmentioning

confidence: 99%

Acoustic neutrino detection in sea water: Technical aspects

Graf¹

2013

AIP Conference Proceedings

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Abstract. The acoustic neutrino detection technique is a promising approach for future large-scale detectors with the aim of measuring the small expected flux of ultra-high-energy cosmogenic neutrinos. This article focuses on the technical aspects of the application of this technique in water. Though the technique is intriguingly simple, challenges arise from e.g. anisotropic sound propagation, ambient noise or transient background in a natural environment. We present major technical aspects of acoustic neutrino detection based on experience gained with different acoustic test arrays. Before aiming for a largescale acoustic or hybrid (opto-acoustic) detector, the acoustic detection technique needs to be investigated further in the next generation of Cherenkov neutrino telescopes that are currently prepared. We discuss the technical implementation into those large optical detectors, primarily focussing on the KM3NeT project.

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“…The first interferometric fiber hydrophones were demonstrated in 1970s [1,2]. In the early time, bare optical fiber was used and the pressure sensitivity in terms of normalized responsivity (NR), defined as the phase change per unit change of acoustic pressure normalized to the total phase shift, was very low.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of acoustic sensitivity of hollow-core photonic bandgap fibers

Yang

Jin

et al. 2013

Opt. Express

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The acoustic pressure sensitivities of hollow-core photonic bandgap fibers (HC-PBFs) with different thicknesses of silica outercladding and polymer jacket were experimentally investigated. Experiment with a HC-PBF with 7 μm-thick silica outer cladding and 100 μm-thick Parylene C jacket demonstrated a pressure sensitivity 10 dB higher than the commercial HC-1550-02 fiber and 25 dB higher than a standard single mode fiber. The significant enhancement in sensitivity would simplify the design of fiber hydrophone arrays and increase the number of sensors that could be multiplexed in a single fiber.

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Fiber-optic hydrophone

Cited by 302 publications

References 0 publications

Detection of acoustic pressure with hollow-core photonic bandgap fiber

Detection of acoustic pressure with hollow-core photonic bandgap fiber

Acoustic neutrino detection in sea water: Technical aspects

Enhancement of acoustic sensitivity of hollow-core photonic bandgap fibers

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