Title :
Beyond 20 GHz bandwidth of partly gain-coupled 1.55 mu m strained multiquantum well DFB lasers
Author :
Lu, Hai-Han ; McGarry, S. ; Li, G.P. ; Makino, Tatsuya
Author_Institution :
Bell Northern Res., Ottawa, Ont., Canada
fDate :
7/22/1993 12:00:00 AM
Abstract :
The small signal frequency responses of partly gain-coupled 1.55 mu m strained MQW DFB lasers were measured with a record -3 dB bandwidth of 22 GHz at 10 mW optical output power. Experimental results show that under 10 Gbit/s pseudorandom NRZ modulation, the devices have small wavelength chirps and clear eye openings making them suitable as light sources for direct modulation in 10 Gbit/s and higher bit rate optical communication systems.
Keywords :
digital communication systems; distributed feedback lasers; frequency response; laser transitions; optical communication equipment; optical modulation; semiconductor lasers; 1.55 micron; 10 Gbit/s; 10 mW; 22 GHz; DFB lasers; MQW; direct modulation; light sources; optical communication systems; partly gain-coupled; pseudorandom NRZ modulation; small signal frequency responses; strained multiquantum well; wavelength chirps;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19930917
