Title :
Transmission of solitons generated under periodic and pseudorandom word modulation of laser diodes
Author :
Mirasso, Claudio R. ; Pesquera, Luis
Author_Institution :
Dept. de Fisica, Univ. de les Illes Balears, Palma de Mallorca, Spain
fDate :
4/1/1995 12:00:00 AM
Abstract :
The generation and transmission of solitons produced by direct modulation of laser diodes are numerically analyzed. We found that when biasing the laser slightly below threshold solitons are generated under both periodic and pseudo-random word modulation. However, when the bias current is above threshold it is not possible to generate solitons under pseudo-random word modulation due to pattern effects produced by the random sequences of input bits. A significant reduction of the timing jitter due to the pulse-to-pulse frequency jitter is obtained when the laser is biased slightly below threshold for any modulation frequency and modulation regime.<>
Keywords :
jitter; optical fibre communication; optical modulation; optical solitons; semiconductor lasers; above threshold; below threshold biased lasers; bias current; input bits; laser diodes; modulation frequency; modulation regime; numerically analyzed; pattern effects; periodic modulation; pseudo-random word modulation; pseudorandom word modulation; pulse-to-pulse frequency jitter; random sequences; soliton transmission; timing jitter; Diode lasers; Fluctuations; Frequency modulation; Jitter; Laser mode locking; Optical pulse generation; Optical pulses; Pulse modulation; Random sequences; Solitons;
Journal_Title :
Photonics Technology Letters, IEEE
