Title :
From spontaneous emission to threshold-crossing: the case of distributed feedback lasers
Author_Institution :
ENIB/RESO, Brest, France
Abstract :
Summary form only given. As in any other optical amplifier or laser system, amplified spontaneous emission (ASE) is known to play quite decisive a role in limiting the performance of distributed feedback (DFB) lasers. But spontaneous emission is not only responsible for noise: it is also the very driving source enabling the laser oscillation to take place. The threshold-crossing of a complex-coupled DFB is more thoroughly investigated We derive an analytical formula for the laser power and linewidth, both continuously valid above as well as below threshold.
Keywords :
distributed feedback lasers; laser beams; laser feedback; laser theory; semiconductor lasers; semiconductor optical amplifiers; spontaneous emission; superradiance; amplified spontaneous emission; analytical formula; complex-coupled DFB laser; distributed feedback lasers; driving source; laser oscillation; laser power; laser system; linewidth; noise; optical amplifier; performance; spontaneous emission; threshold; threshold-crossing; Distributed amplifiers; Distributed feedback devices; Laser feedback; Laser noise; Optical amplifiers; Optical feedback; Optical noise; Semiconductor optical amplifiers; Spontaneous emission; Stimulated emission;
Conference_Titel :
Lasers and Electro-Optics Europe, 2000. Conference Digest. 2000 Conference on
Conference_Location :
Nice
Print_ISBN :
0-7803-6319-1
DOI :
10.1109/CLEOE.2000.910085
