Semiconductor optical amplifiers
This semiconductor optical amplifier is based on a proprietary angled-facet "large-spot" chip. The packaging features a four-stage laser-welded connection of singlemode fiber pigtails as well as an internal Peltier cooler and thermister. Providing up to 25 dB of small signal gain and relying on direct optical amplification, the SOA is suitable for applications where power consumption is critical. It features less than 1-dB polarization sensitivity, so it may be used deep in the network, possibly in a lossless splitter, as the amplification provided will be mostly unaffected by changes in polarization of the incoming signal, according to the manufacturer.
Cambridge Optical Sciences