Title :
Degradation of the mode suppression in single-mode laser diodes due to integrated optical amplifiers
Author :
Moeyersoon, Bart ; Morthier, Geert ; Zhao, Mingshan
Author_Institution :
Dept. of Inf. Technol., Ghent Univ., Belgium
fDate :
3/1/2004 12:00:00 AM
Abstract :
We show that the side-mode suppression in single-mode laser diodes, such as DFB or distributed Bragg reflector laser diodes, can be reduced by 10 dB or more if an optical amplifier is integrated with the laser diode. The reduction of the side-mode rejection is due to an increase of spontaneous emission that couples into the side mode, an increase which in turn is due to amplified spontaneous emission originating in the optical amplifier.
Keywords :
distributed Bragg reflector lasers; integrated optics; laser cavity resonators; laser modes; optical communication equipment; semiconductor optical amplifiers; spontaneous emission; DFB laser diodes; amplified spontaneous emission; distributed Bragg reflector laser diodes; external feedback; integrated optical amplifiers; mode suppression degradation; optical amplifier; optical communication; semiconductor lasers; side-mode rejection; side-mode suppression; single-mode laser diodes; Degradation; Diode lasers; Distributed Bragg reflectors; Distributed amplifiers; Integrated optics; Optical amplifiers; Optical coupling; Semiconductor optical amplifiers; Spontaneous emission; Stimulated emission;
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.2003.820840
