| 摘要 |
<p>The present invention relates to a system and method for distributing digital signals over wavelength-switched optical transport networks with long-distance optical multicasting capability comprising a transmitter module and a receiver module in the headend of primary network and in the local node, respectively, for multicasting IPTV channels with HDTV, UHDTV and 3DTV signals. The transmitter module comprises an Ethernet switch, three DPSK modulators and a DWDM optical multiplexer. The receiver module comprises an Ethernet switch, three DPSK demodulators and a DWDM optical demultiplexer. In a novel manner, both modules combine 2 Gbps digital transmission, RZ-DPSK modulation and optical multicasting over a wavelength-switched optical network, WSON.</p> |
