Title :
Analysis of reduced chirping of semiconductor lasers for improved single-mode-fibre transmission capacity
Author_Institution :
Technische Universitÿt Berlin, Institut fÿr Hochfrequenztechnik, Berlin, West Germany
Abstract :
It is shown that direct modulation of semiconductor lasers yielding optical pulses with an exponential shape corresponds to a nearly chirp-free operation. With such pulses the maximum transmission capacity at ¿ = 1.55 ¿m is about 55 Gbit/s ¿km for a nondispersion-shifted single-mode fibre.
Keywords :
optical communication equipment; optical modulation; semiconductor junction lasers; chirping; direct modulation; exponential shape; optical pulses; semiconductor lasers; single-mode-fibre transmission capacity; transmission capacity 55 Gbit/s km1/2;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19850809
