Demonstration of widely tunable single-chip 10-Gb/s laser-modulators using multiple-bandgap InGaAsP quantum-well intermixing

High-speed wavelength-agile laser-modulators were fabricated for the first time using a quantum-well intermixing processing platform for monolithic integration. Over 19-GHz 3-dB modulator bandwidth was achieved and 10-Gb/s error-free transmission was demonstrated through 75 km of standard fiber.