PASSIVE OPTICAL NETWORK STRUCTURE WITH HIGH FAULT TOLERANCE

摘要

topology insensitive to failures, for passive optical networks based essentially on a 'tree configuration' 'comprising nodes or branch point (16, 17) composed of passive optical splitters, each node (16, 17) of a particular level being connected to the same number of nodes (16, 17) of the level immediately below by two branches (Rd, Rs), and an additional connection (S1, S2 ...) being set between each pair of nodes of the same level.