Title :
Simulation of frequency chirps in MQW DFB lasers under external modulation
Author :
Hong, J. ; Huang, W.-P. ; Makino, T.
Author_Institution :
Dept. of Electr. & Comput. Eng., Waterloo Univ., Ont., Canada
fDate :
2/1/1995 12:00:00 AM
Abstract :
Static and dynamic frequency chirps in a typical λ/4-shifted MQW DFB laser integrated with an external modulator are simulated by a newly developed DFB laser simulator. Their dependences on various important waveguide and material parameters, such as coupling coefficient, cavity length, dispersive round-trip phase in the external cavity, random facet phase and power reflectivity, linewidth enchancement factor in both the laser and modulator sections, as well as the laser bias current, are investigated systematically. Salient features of the frequency chirps in integrated devices are discussed in the presence of spatial-hole-burning in DFB lasers
Keywords :
chirp modulation; distributed feedback lasers; integrated optics; laser beams; laser feedback; optical hole burning; optical modulation; quantum well lasers; DFB laser simulator; MQW DFB lasers; cavity length; coupling coefficient; dispersive round-trip phase; dynamic frequency chirps; external cavity; external modulation; external modulator; frequency chirps; integrated devices; laser bias current; linewidth enchancement factor; material parameters; power reflectivity; random facet phase; spatial-hole-burning; static frequency chirps; waveguide parameters;
Journal_Title :
Optoelectronics, IEE Proceedings -
DOI :
10.1049/ip-opt:19951690
