Nonlinear Dynamics in Semiconductor Lasers - Abstract

Wolf, Philip

High-speed VCSELs for energy efficient computer interconnects

The copper-based bottleneck is inhibiting performance and environmental compatibility of today´s and future supercomputers. Vertical-cavity surface-emitting lasers (VCSELs) are ideally suited to solve this dilemma. General adoption of novel optical links is based on most recent progress in the development of suitable light sources. We recently realized ultra-high speed VCSELs suited for optical interconnects demonstrating record high data rates, high temperature applicability, or ultra low energy consumption. Devices at wavelengths of 850 nm and 980 nm were realized. In contrast to the conventional direct modulation approach, we are also working on an electro-optically modulated (EOM) VCSEL concept employing an EOM Bragg reflector based on the Quantum Confined Stark Effect, as well as on a metal-clad device approach to reduce the footprint by up to 2 orders of magnitude. as part of a cooperative with the University of Illinois.