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Optical circuit on printed circuit board

  • US 5,659,641 A
  • Filed: 12/22/1995
  • Issued: 08/19/1997
  • Est. Priority Date: 12/22/1995
  • Status: Expired
First Claim
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1. Apparatus for mounting fiber optic circuits upon a printed circuit board that includesa printed circuit board containing both electrical and optical circuitry on the upper surfaces of said board,bend members each containing an arcuate guide surface having a predetermined radius of curvature that is within the bend tolerance of optical fibers used in said optical circuitry,mounting means for selectively attaching said bend members at predetermined spaced apart locations on the upper surface of the board,support members attached to the upper surface of said board for mounting optical circuit components between spaced apart bend members,a pair of spaced apart mandrels mounted upon the upper surface of said board about which spliced sections of said fiber optic circuitry are wound, each mandrel being formed by a plurality of circumferentially aligned bend members,said bend members and said support members being formed of a material that has a thermal coefficient of expansion that is about equal to that of said optical fibers.

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