… for implementing an optical layer survivability strategy for metro optical networking. The second
… The nodes can provide a form of optical dual-node interworking (DNI) to ensure that the …

… This chapter reviews the architecture and optical transport of metro networks, which have …
of nodes and optical add/drop granularity, Metro networks are typically equipped with optical …

… Optical Amplifiers. Even though OAs are much cheaper than transponders and WSSs, in metro
networks … from avoiding to place them at all input and output node ports (see Fig. 1) and at …

… The basic building block of an optical WDM ring is the optical ADM (OADM) node. Fixed
OADMs, which can operate on static or factorytuned wavelengths, are usually used in static …

… four considered metro network architectures, composed by N access nodes, which connect
the access networks to the metro network, and a hub node which connects the metro network …

… nodes, which we call an optical island, combined with the physical convergence of access
and metro networks … a reduction in network traffic processing nodes in the network of the order …

… Since in metropolitan-area networks we have a coexistence of both positive (SMF-281 , … at
every HUB node if it carries no traffic for that specific node, and so optical node bypassing is a …

… low cost because an optical coupler is simply inserted at each node beforehand and multi/…
number of nodes, thus extending the transmission distance. Each remote node communicates …

… are the power drained by each optical link (eg, line amplifiers), by each node (ie, add-drop
multiplexers), by an optical interface and optical bypass at a node, and by a transceiver, …

… long-haul networks. Metro networks today are based upon synchronous optical network (SONET)/…
As such, these nodes are much better suited for metro core networks handling larger …