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We propose and demonstrate a novel scheme to overlay multicast service over WDM-PON based on dynamic wavelength reflection scheme. Upstream data is re-modulated on downstream unicast signal.
A multicast scheme in WDM-PON is realized by superimposing multicast DPSK signal onto downstream point-to-point Manchester/NRZ signal. The proposed system is experimentally demonstrated with 5-Gb/s point-to-point Manchester/NRZ format signal and 1.25-Gb/s DPSK signal. At the receiver side, a MZDI and a LPF are employed to retrieve the multicast DPSK signal.
We propose a novel WDM-PON broadcast/multicast architecture that superimposes inverse-RZ signal onto NRZ unicast signal. Multicast control is realized through extinction ratio adjustment of the NRZ signal.
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