optical transport network

Next generation optical networks should provide high capacity to support ever increasing traffic demands. Many technologies have been developed recently for optical transport networks to increase throughput, improve energy efficiency and simplify network deployment. One of most important problems in modern optical networks is IP traffic transmission. Although optical fibers provide tremendous throughput, the overall network performance is still limited by switching nodes. Currently there are three concepts of optical switching: circuit switching, packet switching and burst switching.

Unified network platform to support voice, data and multimedia applications is attractive for optical level. Optical packet switching (OPS) provides a platform where the only transport data unit for all type of traffic will be package. On the other hand, quality of service (QoS), class of service (CoS) and the type of service (ToS) required for the future of the Internet more elaborated and more powerful control plane. Optical switching labels (OLS) supports OPS, optical flow switching (OFS) and optical burst switching (OBS) with full interoperability of QoS, CoS and ToS.