The ultra-fast switching speed of the PbSe EviDots™ combined with an innovative micro-resonator design serves as the basis for Evident's optical transistor. A prototype resonator cavity has been completed making use of lithography on silica wafers. These planar lightwave circuit devices are designed to be optically actuated and switch on and off in 1 psec. This simple device forms the basis of optical logic and is the foundation for telecommunications and other applications.