On fiber-optic hydrophone sensitivity

Shajenko, Peter; Flatley, James P.; Moffett, Mark B.

doi:10.1121/1.382113

Cited by 30 publications

(6 citation statements)

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“…Based on different configurations and detection parameters, optical ultrasound detection techniques can be categorized into: (i) interferometric method and (ii) refractometric method [42]. Interferometric detection can be realized using Michelson interferometry (MI) [152,153], Mach-Zehnder interferometry (MZI) [154,155], doppler [156,157], or resonator [158][159][160]. In MI or MZI, two-beam method is employed where a laser beam passes into two optical paths, one of which is disturbed by the ultrasound wave and the other serves as a reference (see Figure 4a(i),(ii)).…”

Section: Optical Ultrasound Detection Technologiesmentioning

confidence: 99%

Overview of Ultrasound Detection Technologies for Photoacoustic Imaging

2020

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Ultrasound detection is one of the major components of photoacoustic imaging systems. Advancement in ultrasound transducer technology has a significant impact on the translation of photoacoustic imaging to the clinic. Here, we present an overview on various ultrasound transducer technologies including conventional piezoelectric and micromachined transducers, as well as optical ultrasound detection technology. We explain the core components of each technology, their working principle, and describe their manufacturing process. We then quantitatively compare their performance when they are used in the receive mode of a photoacoustic imaging system.

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Section: Optical Ultrasound Detection Technologiesmentioning

confidence: 99%

Overview of Ultrasound Detection Technologies for Photoacoustic Imaging

2020

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“…There are two commonly adopted structures for sensor head design based on Michelson interferometer, disk type and compliant cylinder type [25,26]. The sketch of the two apparatuses is shown in Figure 5.…”

Section: Demodulation Algorithm and Analysis For Accelerometermentioning

confidence: 99%

A Fiber-Optic Interferometric Tri-Component Geophone for Ocean Floor Seismic Monitoring

Chen

Chang

et al. 2016

Sensors

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For the implementation of an all fiber observation network for submarine seismic monitoring, a tri-component geophone based on Michelson interferometry is proposed and tested. A compliant cylinder-based sensor head is analyzed with finite element method and tested. The operation frequency ranges from 2 Hz to 150 Hz for acceleration detection, employing a phase generated carrier demodulation scheme, with a responsivity above 50 dB re rad/g for the whole frequency range. The transverse suppression ratio is about 30 dB. The system noise at low frequency originated mainly from the 1/f fluctuation, with an average system noise level −123.55 dB re rad/Hz ranging from 0 Hz to 500 Hz. The minimum detectable acceleration is about 2 ng/Hz, and the dynamic range is above 116 dB.

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“…Such a choice allows Time-Domain-Multiplexing (TDM), plus it is fairly easy to implement Wave-Division, or Frequency-Domain Multiplexing (WDM or FDM), to create large arrays needed for 3D/4D surveys and marine seismic. Despite almost 40 years of research in this field, starting with Shajenko et al (1978), these optical phase sensing solutions have only recently begun to compete with piezoelectric hydrophones (Yu and Yin, 2002, p. 449). Common phase sensing designs include Mach-Zehnder and Michelson interferometers, which require lengthy sensing and reference arms; Fabry-Perot interferometers, which are in contrast very compact, but suffer from small dynamic range; and Sagnac loop interferometers, which offer various noise reducing advantages, at the cost of being difficult to multiplex.…”

Section: Comparison Of Fibre-optic Seismic Sensing Solutionsmentioning

confidence: 99%