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Fibre optic security and communications link

  • US 5,374,921 A
  • Filed: 11/13/1991
  • Issued: 12/20/1994
  • Est. Priority Date: 11/12/1991
  • Status: Expired due to Term
First Claim
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1. A body strap for retaining a radio frequency beacon disposed in a housing to a body, comprising an optical fiber for encircling a body part, the housing having at least one light transmissive wall region, the ends of the optical fiber abutting an outside surface of said wall region, means for applying light energy to an inside surface of said at least one wall region whereby said light energy may be coupled through said wall region of the housing into one end of the optical fiber, and said coupled light energy may be received in the housing through said at least one wall region of the housing from the other end of the fiber.

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