Title :
Improvement of optical feedback immunity by using a detuned gain-coupled DFB laser
Author :
Achtenhagen, M. ; Borchert, B. ; Miles, R.O. ; Reinhart, F.K.
Author_Institution :
Ecole Polytech. Federale de Lausanne, Switzerland
fDate :
3/2/1995 12:00:00 AM
Abstract :
The authors present a comparison of the feedback sensitivity in a detuned gain-coupled (GC) DFB laser able to operate also in a Fabry-Perot (FP) mode. The comparison leads to a very accurate measurement of the reduction of the linewidth enhancement factor. A novel expression is proposed and a value close to 2.0 is found for the wavelength detuning around 28 nm
Keywords :
distributed feedback lasers; laser feedback; laser theory; semiconductor lasers; spectral line narrowing; DFB laser; Fabry-Perot mode; detuned gain-coupled laser; feedback sensitivity; linewidth enhancement factor; optical feedback immunity; wavelength detuning;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19950281
