Gas sensors play an important role in the increasing trend of industrial automation in recent
years. Hollow core microstructured optical fibers have become a popular material for gas …

Optical spectroscopy has a broad scientific basis in chemistry, physics, and material science,
with diverse applications in medicine, pharmaceuticals, agriculture, and environmental …

Photoacoustic cell is an essential core component in a photoacoustic spectroscopy (PAS)
gas sensing system, which is used to enhance and measure the absorption-induced …

In this study, we developed and validated an improved tuning method for a nonlinear
scanning laser diode in methane gas sensing, using wavelength modulation spectroscopy …

Tunable diode laser absorption spectroscopy technology (TDLAS) has been widely applied
in gaseous component analysis based on gas molecular absorption spectroscopy. When …

We proposed a new method for gas detection in photoacoustic spectroscopy based on
acousto-optic Q-switched fiber laser by merging a transmission PAS cell (resonant …

The monitoring sensitivity of dissolved C 2 H 2 in transformer oil is crucial to ensuring the
safe operation of electric power systems. A highly sensitive sensor system based on fixed …

In a wavelength modulation spectroscopy (WMS) gas sensing system, a scanning ramp
combined with a high frequency sinusoidal signal is applied to drive the laser source …

A demodulation method for tunable diode laser absorption spectroscopy (TDLAS) second
harmonic based on the Hilbert transform is proposed in this paper. The second harmonic of …

The gases which are generated in the industrial areas are very harm. Knowingly or
unknowing the people who work near this hazardous area are affected lot and now it is the …