Title :
New WDM optimized integrated laser-electroabsorption modulator for 1000-km 2.5-Gb/s transmission over a wide range of operating conditions
Author :
Debrégeas-Sillard, H. ; Doussière, P. ; Bodéré, A. ; Rael, Ph ; Legouezigou, O. ; Michaud, G. ; Gaborit, F. ; Gauchard, S. ; Brillouet, F.
Author_Institution :
Groupement d´´Interet Economique, OPTO+, Marcoussis, France
Abstract :
The performances of electroabsorption (EA) modulators integrated with a DFB laser (EA-DFB) are limited by optical feedback and chirp characteristics. Moreover, these devices are very sensitive to the operating conditions due to their very sharp characteristics. We report a new EA-DFB design that totally suppresses optical feedback and shows very smooth characteristics. Transmission over 1000 km of standard dispersion fiber is achieved reproducibly with V/sub "on level"/=0 V (P/sub ave/=2 dBm), over a large range of operating conditions (laser current: 50-120 mA, temperature: 15/spl deg/-35/spl deg/C, laser wavelength: 1550 /spl plusmn/5 nn). This is a very attractive source for easy-to-implement long-haul WDM systems.
Keywords :
distributed feedback lasers; electro-optical modulation; electroabsorption; integrated optoelectronics; optical communication equipment; optimisation; quantum well lasers; wavelength division multiplexing; 1000 km; 15 to 35 C; 1550 nm; 2.5 Gbit/s; 50 to 120 mA; DFB laser; EA-DFB design; Gb/s transmission; WDM optimized integrated laser-electroabsorption modulator; chirp characteristics; easy-to-implement long-haul WDM systems; laser current; laser wavelength; operating condition; operating conditions; optical feedback suppression; standard dispersion fiber; very sharp characteristics; Chirp modulation; Excitons; Fiber lasers; Laser feedback; Optical design; Optical feedback; Temperature distribution; Temperature sensors; Voltage; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
