Fiber-optic photoacoustic gas sensing: a review

X Zhao, HC Qi, Y Xu, C Li, M Guo… - Applied Spectroscopy …, 2025 - Taylor & Francis
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 …

Dense multibutterfly spots-enhanced miniaturized optical fiber photoacoustic gas sensor

X Zhao, H Qi, H Wang, X Wang, M Guo… - Analytical …, 2024 - ACS Publications
A miniaturized optical fiber photoacoustic gas sensor enhanced by dense multibutterfly
spots is reported for the first time. The principle of space light transmission of neglecting …

Rapid photoacoustic exhaust gas analyzer for simultaneous measurement of nitrogen dioxide and sulfur dioxide

H Qi, X Zhao, Y Xu, L Yang, J Liu, K Chen - Analytical Chemistry, 2024 - ACS Publications
A rapid photoacoustic (PA) exhaust gas analyzer is presented for simultaneous
measurements of nitrogen dioxide (NO2) and sulfur dioxide (SO2). A laser diode (LD) …

Differential cantilever enhanced fiber-optic photoacoustic sensor for diffusion gas detection

C Li, Y Zhang, M Guo, H Qi, X Zhao… - Analytical Chemistry, 2024 - ACS Publications
Aiming at the problem of the fiber-optic photoacoustic (PA) sensor being easily disturbed by
external vibration and noise, a differential cantilever enhanced fiber-optic PA sensor is …

Fiber-optic photoacoustic CO sensor for gas insulation equipment monitoring based on cantilever differential lock-in amplification and optical excitation enhancement

X Zhao, F Ma, H Wang, H Qi, C Li, M Guo… - Analytical …, 2024 - ACS Publications
A fiber-optic photoacoustic CO sensor for gas insulation equipment is proposed, which relies
on F–P interferometric cantilever-based differential lock-in amplification and optical …

Quasi-distributed quartz enhanced photoacoustic spectroscopy sensing based on hollow waveguide micropores

W Chen, S Qiao, Y He, J Zhu, K Wang, L ** phantom spots
X Zhao, H Wang, H Qi, Y Xu, M Guo, K Chen - Sensors and Actuators B …, 2024 - Elsevier
A neotype fiber optic photoacoustic gas sensor with overlap** phantom spots based multi-
pass is proposed, which greatly improves the reflection times and the length of gas …

Fiber-optic photoacoustic gas microsensor dual enhanced by Helmholtz resonator and interferometric cantilever

C Li, X Han, M Guo, H Qi, H Wang, X Zhao… - Analytical …, 2024 - ACS Publications
A high-sensitivity fiber-optic photoacoustic (PA) gas microsensor is demonstrated with dual
enhancement based on acoustics and detection. Due to the characteristic of small size, a …

Pressure-Compensated Fiber-Optic Photoacoustic Sensors for Trace SO2 Analysis in Gas Insulation Equipment

X Zhao, Y Zhang, X Han, H Qi, F Ma… - Analytical …, 2024 - ACS Publications
A high-sensitivity fiber-optic photoacoustic sensor with pressure compensation is proposed
to analyze the decomposition component SO2 in high-pressure gas insulation equipment …

All-optical photoacoustic spectroscopy-based dual-component greenhouse gas analyzer

M Guo, M Zhou, B Yang, X Zhao, C Li, Q Yu… - Analytical …, 2024 - ACS Publications
To achieve high sensitivity detection of dual-component greenhouse gases carbon dioxide
and methane simultaneously, a multimechanism synergistic enhanced all-optical …