Title :
40 Gbit/s directly modulated passive feedback laser
Author :
Troppenz, Ute ; Kreissl, Jochen ; Rehbein, Wolfgang ; Bornholdt, Carsten ; Sartorius, Bernd ; Schell, Martin
Author_Institution :
Heinrich-Hertz-Inst., Fraunhofer Inst. for Telecommun., Berlin
Abstract :
High speed directly modulated lasers are key devices for compact, low cost transmitters. In this paper we describe the mechanism of modulation bandwidth enhancement by passive feedback sections and the characteristics of accordingly fabricated 1.55 mum InGaAsP/InP lasers. The system performance at 40 Gbit/s is analysed, including VSR transmission and BER measurements, and the potential for chirp tuning is shown.
Keywords :
III-V semiconductors; chirp modulation; distributed feedback lasers; gallium arsenide; gallium compounds; indium compounds; laser feedback; laser tuning; optical modulation; semiconductor lasers; DFB laser; VSR transmission; bit rate 40 Gbit/s; chirp tuning; directly modulated passive feedback laser; modulation bandwidth; transmitters; wavelength 1.55 mum; Bandwidth; Bit error rate; Chirp modulation; Costs; Indium phosphide; Laser feedback; Laser tuning; Performance analysis; System performance; Transmitters; 40 Gbit/s transmitter; VSR transmission; chirp; direct modulation; multi-section laser;
Conference_Titel :
Indium Phosphide and Related Materials, 2008. IPRM 2008. 20th International Conference on
Conference_Location :
Versailles
Print_ISBN :
978-1-4244-2258-6
Electronic_ISBN :
1092-8669
DOI :
10.1109/ICIPRM.2008.4703053
