CH4 OPTICAL SENSOR USING A 1.31 MU-M DFB LASER-DIODE

Authors
SILVEIRA JP GRASDEPOT F
Citation
Jp. Silveira et F. Grasdepot, CH4 OPTICAL SENSOR USING A 1.31 MU-M DFB LASER-DIODE, Sensors and actuators. B, Chemical, 25(1-3), 1995, pp. 603-606
Citations number
9
Categorie Soggetti
Engineering, Eletrical & Electronic","Instument & Instrumentation
Journal title
Sensors and actuators. B, Chemical → ACNP
ISSN journal
09254005
Volume
25
Issue
1-3
Year of publication
1995
Pages
603 - 606
Database
ISI
SICI code
0925-4005(1995)25:1-3<603:COSUA1>2.0.ZU;2-C
Abstract
We present a CH4 optical sensor using a 1.31 mu m distributed feedback (DFB) InGaAsP laser diode. This sensor uses a new type of signal proc essing providing auto-calibration to cancel emitter-amplitude variatio ns as well as changes in the optical transmission not due to the gas a nd enables the concentration of gases to be measured accurately. The r ealization of an industrial prototype of this methane sensor is report ed.