An integrated near-infrared fiber-optic photoacoustic sensing demodulator was established
for ultra-high sensitivity gas detection. The demodulator has capacities of interference …

A fiber-optic Fabry–Perot (FP) vibration/acoustic sensing system based on high-speed
phase demodulation was developed. The demodulation part is mainly composed of a super …

A miniature fiber-optic Fabry–Perot (FP) accelerometer based on phase demodulation is
demonstrated for improving sensitivity. The accelerometer is composed of a 11.5 mm …

Fiber-optic photoacoustic (PA) sensing has important applications in trace gas detection.
The fiber-optic Fabry-Perot acoustic sensor implemented applying a cantilever is a novel …

Hydrophone is a receiver transducer used to receive acoustic signals and convert them into
electrical signals, and has been widely applied in the fields of ocean observation and …

A high-speed spectrum demodulation method with a large dynamic range for fiber-optic
Fabry–Perot sensor is presented. The demodulation system only consists of a near-infrared …

An all-optical non-resonant photoacoustic spectroscopy system for multicomponent gas
detection based on a silicon cantilever optical microphone (SCOM) and an aseismic …

In this paper, a novel single fiber-type double cavity enhanced photoacoustic spectroscopy
(SFDCE-PAS) sensor has been proposed and demonstrated for trace methane (CH 4) …

For exerting high sensitivity of ultrathin graphene to detection deformation, an enlarged
backing air cavity (EBC) structure is developed to further enhance the mechanical sensitivity …

To avoid interference from unexpected background noises and obtain high fidelity voice
signal, acoustic sensors with high sensitivity, flat frequency response, and high signal-to …