NEW SIGNAL-PROCESSING FOR WAVELENGTH MODULATION SPECTROSCOPY - APPLICATION TO AN INDUSTRIAL METHANE SENSOR

Authors
SILVEIRA JP GRASDEPOT F
Citation
Jp. Silveira et F. Grasdepot, NEW SIGNAL-PROCESSING FOR WAVELENGTH MODULATION SPECTROSCOPY - APPLICATION TO AN INDUSTRIAL METHANE SENSOR, Infrared physics & technology, 37(1), 1996, pp. 143-147
Citations number
10
Categorie Soggetti
Optics,"Physics, Applied
Journal title
Infrared physics & technology → ACNP
ISSN journal
13504495
Volume
37
Issue
1
Year of publication
1996
Pages
143 - 147
Database
ISI
SICI code
1350-4495(1996)37:1<143:NSFWMS>2.0.ZU;2-Y
Abstract
We present a CH4 optical sensor using a 1.31 mu m distributed feedback (DFB) InGaAsP laser diode. This sensor uses a new signal processing p roviding auto-calibration to cancel emitter amplitude variations as we ll as changes in the optical transmission not due to the gas and enabl ing to measure the concentration of gases accurately. The realization of a low cost industrial prototype of this methane sensor is reported.