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Article
Open AccessHigh spatiotemporal resolution optoacoustic sensing with photothermally induced acoustic vibrations in optical fibres
Optoacoustic vibrations in optical fibres have enabled spatially resolved sensing, but the weak electrostrictive force hinders their application. Here, we introduce photothermally induced acoustic vibrations (...
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Article
Open AccessMiniature Fiber-Optic Magnetic Field Sensor Based on Ampere Force and Fiber Laser
A compact fiber-optic magnetic field sensor is proposed by packaging an orthogonal dual-frequency fiber grating laser and a copper wire with alternating electrical current together inside epoxy resin. The alte...
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Article
Open AccessBrillouin Scattering Spectrum Analysis Based on Auto-Regressive Spectral Estimation
Auto-regressive (AR) spectral estimation technology is proposed to analyze the Brillouin scattering spectrum in Brillouin optical time-domain refelectometry. It shows that AR based method can reliably estimate...
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Article
Open AccessLow-frequency vibration measurement by a dual-frequency DBR fiber laser
A dual-frequency distributed Bragg reflector (DBR) fiber laser based sensor is demonstrated for low-frequency vibration measurement through the Doppler effect. The response of the proposed sensor is quite line...
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Article
Open AccessFiber-Laser-Based Ultrasound Sensor for Photoacoustic Imaging
Photoacoustic imaging, especially for intravascular and endoscopic applications, requires ultrasound probes with miniature size and high sensitivity. In this paper, we present a new photoacoustic sensor based ...
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Article
Open AccessCompact dual-frequency fiber laser accelerometer with sub-μg resolution
We demonstrate a compact and high-resolution dual-polarization fiber laser accelerometer. A spring-mass like scheme is constructed by fixing a 10-gram proof mass on the laser cavity to transduce applied vibrat...
