High-speed analog and digital modulation of 1.51-μm wavelength, three-channel buried crescent InGaAsP lasers

Abstract
The microwave modulation characteristics of 300-μm-long, 1.51-μm wavelength, three-channel buried crescent lasers fabricated on semi-insulating InP substrates have been studied. A small-signal bandwidth of 5.7 GHz has been obtained and digital modulation with pseudorandom sequences at 2 and 4 Gb/s has been demonstrated.