Title :
Complex-coupled λ/4-shifted DFB lasers with a flat FM response from 10 kHz to 17 GHz
Author :
Okai, M. ; Suzuki, M. ; Taniwatari, T.
Author_Institution :
Central Res. Lab., Hitachi Ltd, Tokyo
fDate :
7/7/1994 12:00:00 AM
Abstract :
Semiconductor lasers with a flat FM response are required for coherent FSK transmission systems. A complex-coupled λ/4-shifted DFB laser is described that gives a flat FM response from 10 kHz to I7 GHz at 15 mW, achieved by using the self-suppressing mechanism of the spatial hole-burning effect
Keywords :
distributed feedback lasers; frequency shift keying; optical modulation; semiconductor lasers; 10 kHz to 17 GHz; 15 mW; coherent FSK transmission; complex-coupled λ/4-shifted DFB laser; flat FM response; frequency modulation; frequency shift keying; self-suppressing mechanism; semiconductor lasers; spatial hole-burning effect;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19940764
