An evolutionary hybrid-fiber-coax (HFC) network architecture, which does not require DWDM in the beginning stage of adding narrowcast services to broadcast services, is proposed and experimentally verified. It was demonstrated that a directly modulated laser can be used to transport 50 channels of narrowcast signals between 450 and 750 MHz over a transmission distance of 102.5 km to more than 16 optical nodes.

© 2000 Optical Society of America

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