Title :
Simultaneous multigas detection with cascaded strongly gain coupled DFB laser by dual wavelength operation
Author :
Phelan, R. ; Weldon, V. ; Lynch, M. ; Donegan, J.F.
Author_Institution :
Phys. Dept., Optronics Ireland, Dublin, Ireland
fDate :
1/3/2002 12:00:00 AM
Abstract :
Simultaneous detection of hydrogen sulphide and carbon dioxide by dual wavelength operation of a cascaded strongly gain coupled distributed feedback (DFB) laser in the 1575 to 1585 run region is reported for the first time. By precise dual wavelength tuning of the laser diode both gases were detected using wavelength modulation absorption spectroscopy
Keywords :
carbon compounds; distributed feedback lasers; gas sensors; hydrogen compounds; laser tuning; modulation spectroscopy; spectrochemical analysis; 1575 to 1585 nm; CO2; H2S; carbon dioxide; cascaded strongly gain coupled DFB laser; distributed feedback laser; dual wavelength operation; hydrogen sulphide; laser diode; precise dual wavelength tuning; simultaneous multigas detection; wavelength modulation absorption spectroscopy;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20020028
