Title :
Linewidth investigation of monolithically integrated 40 GHz mode-locked laser diodes for high-speed RZ-DQPSK transmission
Author :
Huettl, B. ; Hu, H. ; Ludwig, R. ; Kaiser, R. ; Schmidt-Langhorst, C. ; Steffan, A.G. ; Schubert, C.
Author_Institution :
Fraunhofer Inst. for Telecommun., Heinrich-Hertz-Inst., Berlin
Abstract :
The linewidth of an improved 40 GHz modelocked laser diode is investigated. The influence of its operation parameters on linewidth and the resulting performance in a 40Gband-DQPSK system is evaluated.
Keywords :
high-speed optical techniques; integrated optics; laser beams; laser mode locking; optical fibre communication; optical modulation; optical transmitters; quadrature phase shift keying; semiconductor lasers; frequency 40 GHz; high-speed RZ-DQPSK transmission; linewidth investigation; monolithically integrated mode-locked laser diode; quadrature phase shift keying; Delay; Diode lasers; Laser mode locking; Laser noise; Optical pulses; Phase noise; Radio frequency; Semiconductor device noise; Tunable circuits and devices; Waveguide lasers;
Conference_Titel :
Optical Communication, 2008. ECOC 2008. 34th European Conference on
Conference_Location :
Brussels
Print_ISBN :
978-1-4244-2227-2
Electronic_ISBN :
978-1-4244-2228-9
DOI :
10.1109/ECOC.2008.4729380
