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Optical fiber hermetic seal

  • US 4,413,881 A
  • Filed: 10/19/1981
  • Issued: 11/08/1983
  • Est. Priority Date: 07/26/1979
  • Status: Expired due to Term
First Claim
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1. An optical fiber hermetic seal comprising a mass of fusible alloy embracing a length of the fiber, the fusible alloy exerting pressure on the fiber at an interface between the alloy and the fiber, the alloy characterized by appreciable expansion during solidification, the mass of fused alloy being generally cylindrical in shape, the fiber located on a central longitudinal axis of the cylindrical mass of alloy, and the mass of fused alloy being embraced by a hollow cylindrical tube.

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