Photonic Integrated Circuits (PIC)
The telecommunications market often uses thermoelectric coolers (TECs) to temperature-stabilize Photonic Integrated Circuits (PIC). PICs provide multiple functions built on a common Si or InP platform. PICs will commonly provide functions such as multiplexing several digital light streams, followed by laser transmission of the multiplexed signals, light stream detection and de-multiplexing of incoming signals, optical channel monitoring, wavelength add/drop switching and more. As with all Telcordia components, PICs are expected to work nonstop in the field for a minimum of 20 years; the TEC must accommodate the laser’s lifetime and durability both in design and build.