Acacia Communications has announced its coherent 100G CFP module, designed for metro networks. Acacia's coherent AC-100 CFP transceiver takes advantage of the two major tectonic technology shifts underway in optical communications, namely digital signal processing implemented in small geometry CMOS and extensive photonic integration. AC-100 CFP includes framing and OTN functionality, making it possible to turn client CFP slots into LH interfaces. It also features a single common pluggable interface that can be used across different service platforms and includes support for the important ZR application. Acacia's coherent 100G CFP modules will be sampling the end of this year.