This is very big.

We believe we are the only company that has demonstrated the capability to cost effectively integrate multiple electronic and optical functions on a single chip. The POET photonic engine, as designed, integrates at least three essential discrete devices onto a single GaAs chip: a vertical cavity surface-emitting laser (VCSEL), a photodetector and an electronic circuit based on either a thyristor or a heterostructure field-effect transistor (HFET).