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Subcarrier modulation fiber-to-the-home/curb (FTTH/C) access system providing broadband communications

  • US 6,577,414 B1
  • Filed: 02/19/1999
  • Issued: 06/10/2003
  • Est. Priority Date: 02/20/1998
  • Status: Expired due to Term
First Claim
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1. A method of delivering CATV and data signals in both an upstream and downstream direction between a headend and a service subscriber, comprising the steps of:

  • combining said CATV and data signals from said headend into a composite optical signal using coarse wavelength division multiplexing of two wavelengths within the same band, a first of said wavelengths being associated with said CATV signals and a second of said wavelengths being associated with said data signals;

    transmitting said composite optical signal downstream over a passive optical network (PON) using coarse wavelength division multiplexing (CWDM) to separate said downstream transmission from any upstream transmissions;

    converting said transmitted downstream composite optical signal to electrical signals; and

    routing said electrical signals to said service subscriber for use.

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