An integrated circuit may include at least one active optical device and a waveguide coupled thereto. The waveguide may include a superlattice including a plurality of stacked groups of layers. Each group of layers of the superlattice may include a plurality of stacked base semiconductor monolayers defining...http://www.google.com/patents/US7279699?utm_source=gb-gplus-sharePatent US7279699 - Integrated circuit comprising a waveguide having an energy band engineered superlattice
