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Bidirectional optically powered signal transmission apparatus

  • US 5,664,035 A
  • Filed: 04/10/1995
  • Issued: 09/02/1997
  • Est. Priority Date: 04/08/1994
  • Status: Expired due to Fees
First Claim
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1. A bidirectional optically powered signal transmission apparatus, comprising:

  • first and second optical transmission stations;

    first means, in said first optical transmission station, for sending a first light beam on an optical transmission path to said second optical transmission station;

    second means, in said first optical transmission station, for receiving a second light beam sent from said second optical transmission station;

    said first light beam having a first predetermined wavelength;

    said second light beam having a second predetermined wavelength, said first and second predetermined wavelengths being different;

    third means, in said second optical transmission station, for sending said second light beam to said first optical transmission station over said optical transmission path;

    fourth means, in said second optical transmission station, for receiving said first light beam sent from said first optical transmission station;

    said first light beam including an AC signal component superimposed on a DC power component; and

    means, in said second optical transmission station, for converting said DC power component of said first light beam to electric power for powering said second optical transmission station.

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