High-reliable WDM access network based on alternate transmission mode featuring power optimization and network stability

A Novel Modularized Twin-Ring Wavelength-Division Multiplexer Access Network with Fiber-Fault Protection and Wavelength Tetra-Reuse

“…Taking wavelength λ 5 as an example, this wavelength is used to transmit both the downstream and upstream signals of ONU 4 2 and ONU 2 2 , so the efficiency of the wavelength resource can be doubled, and the implementation cost can be reduced effectively. In the case of the same number of wavelengths used in the network, the capacity of the network can be doubled compared with a conventional ring-based network by using the proposed wavelength tetra-reuse scheme.…”

“…Relying on the superiority of its physical topology, the network can provide fiber-fault protection [3]. Both dual-fiber and single-fiber ring-based networks have been proposed to realize such high reliability [4][5][6][7][8][9]. In single-fiber ring-based networks with a complex protection mechanism, the network can restore only one failure by switching from a ring topology to a spur topology.…”

Novel WDM Access Network Featuring Self-healing Capability and Flexible Extensibility

“…And relying on the superiority of its physical topology, ring-based network can provide fiber-fault protection easily [6]. Both dual-fiber and single-fiber ring-based schemes have been proposed to realize higher reliability [7]- [9].…”