Title :
Dynamic spectral broadening in digitally modulated lasers
Author :
O´Gorman, J. ; Levi, A.F.J. ; Tanbun-Ek, T. ; Coblentz, D.L. ; Logan, R.A.
Author_Institution :
AT&T Bell Lab., Murray Hill, NJ, USA
fDate :
7/4/1991 12:00:00 AM
Abstract :
It is demonstrated that Gbit/s digitally modulated, voltage controlled singlemode multiple quantum well semiconductor lasers with an intracavity saturable absorber show reduced spectral broadening compared to conventional high contrast modulation schemes. The intracavity loss modulated laser linewidth is also calculated using experimentally determined voltage and intensity dependence of absorption in MQW modulators and excellent agreement with experiment is found.
Keywords :
distributed feedback lasers; optical communication equipment; semiconductor junction lasers; semiconductor quantum wells; 1.52 micron; MQW lasers; absorption in MQW modulators; digitally modulated lasers; dynamic spectral broadening; gigabit rates; intensity dependence; intracavity loss modulated laser linewidth; intracavity saturable absorber; multiple quantum well semiconductor lasers; voltage dependence;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19910777
