Low Chirp Electro-Absorption Modulated 1.55microns Wavelength Selectable DFB Array using Hybrid Integration

We demonstrate for the first time an EA-modulated hybrid integrated wavelength selectable laser comprised of 1.55microns DFB laser array and amplifier/modulator chips fabricated using a novel spot-size converter integration technique, and optically connected via silica-on-silicon waveguides. The device operates over 16.50 GHz spaced channels with SMSR > 33dB and peak power from +1.6 to -6.2Bm. Low chirp NRZ modulation at 2.5 Gb/s is obtained with 13Db for 2.6V sub (p-p) drive over all channels.