Fully Stabilized Electroabsorption Modulated Tunable DBR Laser Transmitter for Long-Haul Optical Communications
01 March 2001
We report on a fully functional 2.5 Gb/s EA-modulated wavelength-selectable laser module meeting all long-haul transmission requirements for stability, chirp, power and linewidth over 20 channels on a 50 GHz grid. Based on a highly integrated InP chip comprisiing a DBR laser, semiconductor optical amplifier, power monitor, and EA-modulator, the compact transmitter module also contains optics and control circuits necessary to ensure simultaneous long-term wavelength and mode stability. We hav achieved 2.5 Gb/s transmission on all 20 channels over 680 km of standard fiber.