High frequency operation of 1.57 /spl mu/m laterally gain coupled DFB lasers with self aligned ohmic contacts and nickel surface gratings

Abstract

Laterally coupled DFB lasers with self-aligned ohmic contacts show the advantage of a, considerably simplified fabrication process. Side-mode-suppresion-ratios up to 55 dB and 3 dB-bandwidths beyond 15 GHz were obtained for these devices.