Evident's one picosecond all-optical transistor forms the basis for optical packet switching for telecom routing applications. The schematic shows a planar lightwave circuit where header and data information are propagating from left to right. Evident's optical transistor is in the path of the data and is switched via amplified header information. Hence, the header provides the actuation signal thus eliminating the need for electronic conversion. When the header contains an "ON" signal, the data passes down line 1 (for example), while an "OFF" signal results in propagation, down line 2. The PbSe EviDots™ determine the switching speed of this device, hence one picosecond all optical routing may be attainable.