Title :
10-Gb/s standard fiber transmission using directly modulated 1.55-μm quantum-well DFB lasers
Author :
Mohrdiek, S. ; Burkhard, H. ; Steinhagen, F. ; Hillmer, Hartmut ; Losch, R. ; Schlapp, W. ; Gobel, R.
Author_Institution :
Deutsche-Telekom, Darmstadt, Germany
Abstract :
10-Gb/s long-haul transmission on standard single-mode fibers at 1.55 μm with intensity modulated, low-chirp MQW DFB lasers is investigated. Successful transmission is achieved by operating the laser at increased bias. Thus, the laser chirp acts favorably on the propagation after an initial distance of 30 km in the fiber. A detailed system evaluation with an optical preamplified PIN-receiver, reveals a negligible dispersion power penalty for transmission distances between 35 and 70 km. The power penalty, mainly caused by a lower extinction ratio, must be accepted.
Keywords :
chirp modulation; distributed feedback lasers; optical fibre dispersion; optical fibre networks; optical modulation; optical receivers; p-i-n photodiodes; quantum well lasers; 1.55 mum; 10 Gbit/s; 30 km; 35 to 70 km; PIN-receiver; directly modulated; increased bias; intensity modulated; laser chirp; long-haul transmission; low-chirp MQW DFB lasers; lower extinction ratio; negligible dispersion power penalty; power penalty; quantum-well DFB lasers; standard fiber transmission; standard single-mode fibers; system evaluation; transmission distances; Chirp modulation; Fiber lasers; Fiber nonlinear optics; Laser modes; Optical attenuators; Optical filters; Optical noise; Optical receivers; Quantum well devices; Quantum well lasers;
Journal_Title :
Photonics Technology Letters, IEEE
