Able to deliver 100 GbE and OTU4 data rate performance while consuming 4 W typ, 100G LR4 CFP4 enables high-end core router and packet-optical transport systems to increase front panel density to meet bandwidth demands of datacenter interconnects and network operators. SFF design, backwards compatible with existing Oclaro CFP and CFP2 LR4 designs, leverages indium phosphide (InP) 28G core electro-absorption modulated laser (EML) technology.