Nanocrystalline Cerium Oxide coated fiber optic gas sensor – January 2014
B Renganathan, D Sastikumar, R Srinivasan… – Current Applied Physics 2014
A clad modified fiber optic sensor with nanocrystalline CeO2 is proposed for gas detection. As-prepared and annealed CeO2 (500 °C) samples have been used as gas sensing media. The spectral characteristics of the fiber optic gas sensor are studied for various concentrations of ammonia, ethanol and methanol gases (0–500 ppm). The sensor exhibits linear variation in the spectral peak intensity with the gas concentration. The characteristics of the sensor are also studied for gas selectivity. The time response characteristics of the sensor are reported.
… The sensor consists of a white light source (Model SL1, StellarNet Inc., USA with
wavelength range from 100 to 2000 nm) and miniature fiber optic spectrometer
(EPP-2000, Stellar Net, USA) having a spectral range of 100 to 1100 nm
