Ciena’s WaveLogic 5 Nano (WL5n) 100G-400G Standard and Enhanced QSFP-DD Transceivers incorporate Ciena’s advanced coherent optical technology to deliver the power, space, and modularity benefits of pluggables optimized for 400G packet transport as well as enabling power and cost reduction for 100G/200G transport in 50GHz fixed-grid networks.  The WL5n Standard QSFP-DD supports interoperable 400G single-span DCI and multi-span metro packet transport along with 100G/200G transport in access/metro applications.  The WL5n Enhanced QSFP-DD additionally supports extended-reach metro-regional packet transport.