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Current TDM-PONs are unlikely to provide sufficient bandwidth for emerging high-quality video and multimedia applications. Consequently, topologies combining and overlaying TDM-PONs with WDM are currently being investigated. In this work, we present a seamless upgrade path from TDM-PONs to WDM-PONs; provision being made on an on-demand basis that is transparent to existing deployments. In these next-...
A novel single-fiber ring-tree topology overlying multiple time-division-multiplexed (TDM) passive optical networks is presented and demonstrated. Each TDM service is overlaid on a different wavelength-division-multiplexing channel. A concatenation of advanced coupler-based remote nodes (RNs) distributes the channels in an optimal geographical distribution to secondary trees, which connect to the...
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