Ciena Extends its CoreStream Platform for Regional Networks

Ciena announced an extension of its CoreStream Agility Optical Transmission System designed for serving metro and regional core networks that have moderate capacity and distance requirements. Existing CoreStream DWDM platforms support long-haul and ultra long-haul (ULH) applications.


The new CoreStream Regional system, which is part of Ciena's recently announced FlexSelect Architecture, features flexible optical add/drop multiplexing (OADM) options, including a fixed OADM that allows up to eight add/drop channels per add/drop site and a "Select OADM" that provides reconfigurable OADM (ROADM) functionality for fully configurable add/drop support. The platform uses programmable transport modules that can support SONET, SDH, OTN and Ethernet interfaces. In addition, CoreStream Regional features a lower-powered erbium-doped fiber amplifier (EDFA) for efficient transport while still allowing optional Raman support for difficult span designs. Like CoreStream Agility, the CoreStream Regional platform provides for common sparing, a single management platform, and has been field demonstrated to be 40G upgradeable.


The modular DWDM architecture allows service providers to install incremental, in-service capacity upgrades up to 80 channels x 10 Gbps over distances in excess of 1,200 km.
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