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CATV distribution networks using light wave transmission lines

  • US 5,153,763 A
  • Filed: 12/01/1989
  • Issued: 10/06/1992
  • Est. Priority Date: 12/01/1989
  • Status: Expired due to Term
First Claim
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1. A CATV network for distributing broadband, multi-channel CATV signals from a head end or hub to subscribers, having means for frequency multiplexing individual TV channel signals into broadband electrical signals, which comprises:

  • a) means at said head end or hub for providing light wave signals corresponding to said broadband electrical signals,b) a fiber node with optical electrical signal receiver means for converting said light wave signals to said broadband electrical signals,c) a fiber optic cable with opposite ends, one of said ends being supplied with light wave signals from said head end or hub, the other of said ends delivering said light wave signals to said fiber node,d) a cell to which a multiplicity of subscribers are connected,e) a transmission line of length much less than said optical cable, being the input of said cell, a cascade of amplifiers in said transmission line, one end of said transmission line receiving said broadband electrical signals from said fiber node, the other end of said transmission line being connected to an output coupler means, said output coupler means connecting said transmission line to said subscribers.

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