Gas sensors based on superluminescent diodes for combustion monitoring

Application of fiber-coupled superluminescent diodes with a wideband optical source for the detection of various gases is reported. Superluminescent diodes with two different wavelengths around 760 and 1530 nm are used for O 2 and NH3 gas sensing, respectively. The technique allows multiple-gas sensing for combustion monitoring. © 2009 Optical Society of America.