Silicon photonics: 1. Explored germanium and erbium as possible gain material for a Si-based laser 2. Tested novel PIN Si modulators Fabrication 1. Cleanroom experience using photolithography, metal and dielectric deposition, wet chemistry 2. Analysis using SEM, FIB, EDX, etc Simulation 1. Silvaco for III/V receiver simulation and optimization 2. Matlab for rate equation analysis Testing 1.