Fiber-optic acoustic pressure sensor based on large-area nanolayer silver diaghragm
TLDR
A fiber-optic acoustic pressure sensor based on a large-area nanolayer silver diaphragm is demonstrated with a high dynamic pressure sensitivity and simple fabrication process, making it an attractive tool for acoustic sensing and photo-acoustic spectroscopy.Abstract:
A fiber-optic acoustic pressure sensor based on a large-area nanolayer silver diaphragm is demonstrated with a high dynamic pressure sensitivity of 160 nm/Pa at 4 kHz frequency. The sensor exhibits a noise limited detectable pressure level of 14.5 μPa/Hz(1/2). Its high dynamic pressure sensitivity and simple fabrication process make it an attractive tool for acoustic sensing and photo-acoustic spectroscopy.read more
Citations
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Journal ArticleDOI
Small in-fiber Fabry-Perot low-frequency acoustic pressure sensor with PDMS diaphragm embedded in hollow-core fiber
TL;DR: In this article, a low-cost extrinsic Fabry-Perot (FP) fiber low-frequency acoustic pressure sensor (EFPAS) based on polydimethylsiloxane (PDMS) diaphragm is proposed.
Journal ArticleDOI
Ultrathin graphene diaphragm-based extrinsic Fabry-Perot interferometer for ultra-wideband fiber optic acoustic sensing.
Wenjun Ni,Ping Lu,Xin Fu,Wei Zhang,Perry Ping Shum,Handong Sun,Chunyong Yang,Deming Liu,Jiangshan Zhang +8 more
TL;DR: An ultra-wideband fiber optic acoustic sensor based on graphene diaphragm with a thickness of 10nm with a great potential in seismic wave monitoring, photoacoustic spectroscopy and photoac acoustic imaging application due to its compact structure, simple manufacturing, and low cost has been proposed and experimentally demonstrated.
Journal ArticleDOI
Fast demodulated white-light interferometry-based fiber-optic Fabry-Perot cantilever microphone.
TL;DR: A highly sensitive and stable fiber-optic Fabry-Perot cantilever microphone based on fast demodulated white-light interferometry utilizing a full spectrum, with the advantages of both high resolution and large dynamic range is demonstrated.
Journal ArticleDOI
High-Sensitivity Fabry-Perot Interferometric Acoustic Sensor for Low-Frequency Acoustic Pressure Detections
TL;DR: In this article, a fiber-optic Fabry-Perot acoustic sensor based on a Parylene-C diaphragm of 500mm in thickness was demonstrated for low-frequency acoustic pressure detection.
Journal ArticleDOI
Basilar membrane-inspired self-powered acoustic sensor enabled by highly sensitive multi tunable frequency band
Jae Hyun Han,Jun-Hyuk Kwak,Daniel J. Joe,Seong Kwang Hong,Hee Seung Wang,Jung-Hwan Park,Shin Hur,Keon Jae Lee +7 more
TL;DR: In this article, a self-powered flexible piezoelectric acoustic sensor (f-PAS) inspired by basilar membrane in human cochlear was presented, which covered the voice frequency spectrum via the combination of its low quality (Q) factor and multi-resonant frequency tuning, exhibiting four to eight times higher sensitivity than the conventional condenser sensor.
References
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Journal ArticleDOI
Homodyne Demodulation Scheme for Fiber Optic Sensors Using Phase Generated Carrier
TL;DR: In this article, a phase generated carrier is used to detect phase shifts in the microradian range, which obviates the phase tracker resetting problem encountered in active homodyne detection schemes.
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Recent progress in fiber-optic extrinsic Fabry–Perot interferometric sensors
TL;DR: In this article, the optical amplification technology is adopted into the EFPI sensor system to enhance the interferometric signal considerably, and both spatial-frequency multiplexing and coarse-wavelength division multiple-xing technologies are demonstrated for the Fizeau sensor in order to realize the measurement of multiple parameters such as displacement, transverse load, static strain, temperature, and vibration.
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High-sensitivity fiber-tip pressure sensor with graphene diaphragm
TL;DR: A miniature fiber-tip pressure sensor was built by using an extremely thin graphene film as the diaphragm, which acts as a light reflector and forms a low finesse Fabry-Perot interferometer.
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High-sensitivity Fabry–Perot interferometric pressure sensor based on a nanothick silver diaphragm
TL;DR: A fiber-optic extrinsic Fabry-Perot interferometer pressure sensor based on a nanothick silver diaphragm that exhibits a relatively linear response within the pressure variation range of 0-50 kPa, with a high pressure sensitivity of 70.5 nm/kPa.
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Fiber-Optic Fabry–Pérot Acoustic Sensor With Multilayer Graphene Diaphragm
TL;DR: In this paper, a fiber-optic Fabry-Perot acoustic sensor with a ~100-nmthick multilayer graphene diaphragm is reported, which demonstrates a pressureinduced deflection of 1100 nm/kPa and a noise equivalent acoustic signal level of ~ 60 μPa/Hz1/2 at the frequency of 10 kHz.