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System and method for communicating optical signals between a data service provider and subscribers

  • US 6,973,271 B2
  • Filed: 07/05/2001
  • Issued: 12/06/2005
  • Est. Priority Date: 10/04/2000
  • Status: Expired due to Term
First Claim
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1. An optical network system comprising:

  • a data service hub for sending downstream optical data signals on a first optical waveguide, and for sending downstream optical RF modulated television broadcast signals on a second optical waveguide;

    a plurality of optical taps, each optical tap dividing downstream optical signals comprising a combination of the downstream optical data signals and the optical RF modulated television broadcast signals between a plurality of optical waveguides coupled to a plurality of subscriber optical interfaces;

    each subscriber optical interface providing electrical communications to a subscriber, each subscriber optical interface coupled to a respective optical tap by an optical waveguide, for receiving the downstream optical signals from a respective optical tap and converting the downstream optical signals into downstream electrical signals; and

    a laser transceiver node disposed between the data service hub and the optical tap, for communicating optical signals to and from the data service hub and to and from a respective optical tap, for apportioning bandwidth that is shared between groups of subscriber optical interfaces connected to a respective optical tap, the laser transceiver node further comprising;

    a plurality of multiplexers for providing downstream modulation signals to respective optical transmitters and for receiving upstream electrical signals from respective optical receivers, each multiplexer corresponding to a respective optical tap;

    a plurality of bi-directional splitters for receiving downstream and upstream optical signals, each bi-directional splitter coupled to a respective optical transmitter and a respective optical receiver;

    an optical transceiver coupled to the first optical waveguide for converting downstream optical data signals from the first optical waveguide into downstream electrical data signals, for converting upstream electrical data signals into optical data signals;

    a routing device coupled to each multiplexer and the optical transceiver, for assigning downstream electrical data signals received from the optical transceiver to predetermined multiplexers, for combining upstream electrical data signals from respective multiplexers into one electrical signal that modulates the optical transceiver; and

    an optical splitter coupled to the second optical waveguide and respective optical diplexers, the diplexers for combining the downstream optical RF modulated television broadcast signals from the second optical waveguide with downstream optical data signals.

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