Dynamics of SHB-Induced mode instabilities in uniform DFB semiconductor lasers

14 October 1993

journal article
Published by Institution of Engineering and Technology (IET) in Electronics Letters

Vol. 29 (21) , 1852-1854
https://doi.org/10.1049/el:19931233

Abstract

Time-domain simulations show strong 1 GHz pulsations and mode hopping of a uniform-DFB semiconductor laser operated at high output powers. These pulsations are due to asymmetric longitudinal spatial hole burning (SHB) of the carrier density by a high-frequency mode, leading to a pulse in a low-frequency mode. The pulse relaxes the carrier density to a symmetrical profile, which prefers the original mode.

Keywords

ASYMMETRIC LONGITUDINAL SPATIAL HOLE BURNING
HIGH OUTPUT POWERS
MODE HOPPING
SHB-INDUCED MODE INSTABILITIES
SYMMETRICAL PROFILE
CARRIER DENSITY
UNIFORM DFB SEMICONDUCTOR LASERS