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Optical communication system

  • US 4,775,971 A
  • Filed: 03/27/1986
  • Issued: 10/04/1988
  • Est. Priority Date: 03/27/1986
  • Status: Expired due to Term
First Claim
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1. An optical communication system for providing bidirectional communication between a central location and a plurality of N remote locations operable with a single shared light source located at said central location and a single optical fiber between said central location and each remote location, said optical transmission system comprisinga central location structure includingadjustable power dividing means responsive to said single shared light source for providing a plurality of M output carrier light waves, each carrier light wave of a power level determined by the adjustment;

  • a plurality of M modulating means, responsive to both said plurality of M carrier light wave outputs and a plurality of N modulating signals from a plurality of N information sources, for generating a plurality of N output transmission signals to be transmitted to said plurality of N remote locations over said associated optical fibers; and

    a plurality of N return signal recovery means, each return signal recovery means responsive to a separate one of the return information signals transmitted from said plurality of N remote locations to said central location; and

    each remote location of said plurality of N remote locations comprisesdetection means for recovering the associated modulating signal of the associated central location information source from said output transmission signal; and

    modulation means responsive to a return modulation signal from a remote location information source for remodulating said output transmission signal to form said return information signal transmitted to said central location over said associated optical fiber.

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