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Optical fiber distribution network including non-destructive taps and method of using same

  • US 4,856,864 A
  • Filed: 08/31/1988
  • Issued: 08/15/1989
  • Est. Priority Date: 07/11/1985
  • Status: Expired due to Fees
First Claim
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1. An apparatus for reducing a magnitude of an optical signal excess loss created by a light read tap which withdraws part of an optical signal representative of information out of an optical fiber through a side thereof, comprising:

  • N means for modifying an energy distribution of an optical signal within an optical fiber upstream of a first location so as to reduce an integrated energy ratio between an outermost and an innermost section of a core of the optical fiber in a vicinity of the first location, N being an integer;

    a first light read tap for withdrawing a first part of the optical signal at the first location through a side of an optical fiber section, an optical signal excess loss created by the first light read tap being less than an optical signal excess loss which would be created if the integrated energy ratio was not modified; and

    means for detecting the first part of the optical signal so as to detect information represented by the optical signal.

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