Title :
Advantage of 1.55 mu m InGaAs/InGaAsP MQW-DFB lasers for reducing waveform degradation and dispersion penalty for 2.5 Gb/s long-span normal fiber transmission
Author :
Uomi, Kazuhisa ; Murata, Atsushi ; Sano, Shigehisa ; Takeyari, Ryoji ; Takai, Atsushi
Author_Institution :
Hitachi Ltd., Tokyo, Japan
fDate :
6/1/1992 12:00:00 AM
Abstract :
The advantage of 1.55- mu m multiquantum-well (MQW) distributed-feedback (DFB) lasers over conventional bulk lasers for normal fiber transmission is shown by evaluating the waveform degradation and the dispersion penalty theoretically and experimentally. The dispersion penalty expected for 70-km transmission is shown to be smaller than 1 dB at 2.5 Gb/s when the bias current is 1.1 times the threshold bias.<>
Keywords :
III-V semiconductors; distributed feedback lasers; gallium arsenide; gallium compounds; indium compounds; optical communication equipment; optical dispersion; optical links; semiconductor junction lasers; 1.55 micron; 2.5 Gbit/s; 70 km; IR; InGaAs-InGaAsP; MQW-DFB lasers; bias current; dispersion penalty; distributed-feedback; long-span normal fiber transmission; multiquantum-well; semiconductor diode lasers; threshold bias; waveform degradation; Degradation; Electrons; Fiber lasers; Indium gallium arsenide; Optical control; Optical fiber communication; Optical fiber dispersion; Optical fiber polarization; Optical fibers; Quantum well devices;
Journal_Title :
Photonics Technology Letters, IEEE
