Optical Technologies

Vtesse Networks pride themselves in a customer driven approach to optical network service design. This approach means than rather than be prescriptive about the hardware platforms we use, we are able to select the best available hardware for each customer situation.

Our solutions include:

CWDM (Coarse Wave Division Multiplexing) platforms - a lower cost option for Campus and Metropolitan network services requiring up to 20 wavelengths, each with a maximum capacity of 2.5 Gbps (although some CWDM implementations allow for the aggregation of 4*2.5Gb channels to provide a 10Gbit interface) over distances of up to 60Km

DWDM (Dense Wave Division Multiplexing) platforms - typically used in carrier backbone networks and can provide up to 160 wavelengths, each capable of carrying up to 40Gbit payloads over distances of up to 1000Km without regeneration (Longer with). DWDM systems are much more expensive than CWDM, due mainly to their advanced optics and management systems.

ROADM (Reconfiguarable Optical Add-Drop Multiplexers) - a step-up again in terms of cost, but with the additional feature that wavelengths can be "added" and "dropped off" for customer connection at any node, anywhere on a multi-node network, under software control. The architecture of the ROADM is such that dropping off or adding wavelengths does not interrupt the 'pass-through' channels. Numerous technological approaches are utilised for various commercial ROADMs, the trade-off being between cost, optical power, and flexibility.

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