Title :
Chirp characteristics of 40-gb/s directly Modulated distributed-feedback laser diodes
Author :
Sato, Kenji ; Kuwahara, Shoichiro ; Miyamoto, Yutaka
Author_Institution :
Nippon Telegraph & Telephone, NTT Corp., Kanagawa, Japan
Abstract :
For short-reach applications, 40-Gb/s directly modulated semiconductor lasers enable high-capacity transmission with a simple and low-cost configuration. We investigated the chirp characteristics of 40-Gb/s directly modulated 1.55-μm distributed-feedback laser diodes (DFB-LDs) and measured the linewidth enhancement factor and dynamic chirp. We then evaluated the fiber-dispersion dependence of the bit error rates (BERs) and dispersion tolerance for 40-Gb/s transmissions.
Keywords :
chirp modulation; distributed feedback lasers; error statistics; optical communication equipment; optical fibre communication; optical fibre dispersion; optical modulation; quantum well lasers; 1.55 mum; 40 Gbit/s; BER; DFB-LD; bit error rates; chirp characteristics; direct modulation; dispersion tolerance; distributed-feedback laser diodes; fiber dispersion; linewidth enhancement factor; Bandwidth; Charge carrier density; Chirp modulation; Diode lasers; Fiber lasers; Frequency; Laser theory; Optical fiber dispersion; Quantum well lasers; Semiconductor lasers; Distributed-feedback (DFB) lasers; optical fiber dispersion; optical modulation/demodulation; quantum-well lasers;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2005.857753
