Title :
Linewidth and alpha-factor of detuned-loaded DBR lasers
Author :
Verdiell, Jean-Marc ; Koren, Uziel ; Koch, Thomas L.
Author_Institution :
AT&T Bell Lab., Holmdel, NJ, USA
fDate :
4/1/1992 12:00:00 AM
Abstract :
The authors report measurements of the alpha -factor and linewidth of DBR (distributed Bragg reflector) lasers fabricated with weak grating constants. Such devices exhibit detuned-loading effects, and the measured values depend strongly on the tuning current of the Bragg section. alpha -factor behavior is found to agree with earlier theoretical predictions. Linewidth behavior is shown to be dominated by carrier shot noise in the tuning section. A theoretical analysis of the DBR laser is outlined including detuned loading and carrier shot noise effect.<>
Keywords :
diffraction gratings; distributed Bragg reflector lasers; electron device noise; laser tuning; random noise; semiconductor junction lasers; spectral line breadth; Bragg section; alpha-factor; carrier shot noise; detuned-loaded DBR lasers; distributed Bragg reflector; laser spectral linewidth; tuning current; tuning section; weak grating constants; Detectors; Distributed Bragg reflectors; Gratings; Laser modes; Laser noise; Laser theory; Laser tuning; Reflectivity; Semiconductor device noise; Semiconductor lasers;
Journal_Title :
Photonics Technology Letters, IEEE
