Title :
Dynamics of index coupled DFB lasers with minimal spatial hole burning
Author :
Zhang, L.M. ; Carroll, J.E.
Author_Institution :
Dept. of Eng., Cambridge Univ., UK
fDate :
4/1/1994 12:00:00 AM
Abstract :
Spatial hole burning in quarter-wave phase-shifted DFB lasers can be significantly reduced by spatially varying the coupling coefficient in the longitudinal direction. For such a laser, time dependent spatial hole burning is examined using a large signal dynamic model established earlier. The transient power changes, frequency chirp during gain switching and side mode suppression ratio at steady state are also simulated.<>
Keywords :
distributed feedback lasers; laser modes; laser theory; optical hole burning; optical switches; refractive index; semiconductor lasers; coupling coefficient; frequency chirp; gain switching; index coupled DFB lasers; large signal dynamic model; longitudinal direction; minimal spatial hole burning; phase-shifted; quarter-wave; side mode suppression ratio; spatially varying; steady state; time dependent spatial hole burning; transient power changes,; Distributed feedback devices; Frequency; Function approximation; Gratings; Laser feedback; Laser modes; Laser theory; Optical coupling; Phase modulation; Photonics;
Journal_Title :
Photonics Technology Letters, IEEE
