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Remote sensing of physical variables with fiber optic systems

  • US 5,363,463 A
  • Filed: 01/02/1992
  • Issued: 11/08/1994
  • Est. Priority Date: 08/06/1982
  • Status: Expired due to Fees
First Claim
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1. A light guiding optical fiber having a proximal end and a distal end and comprising a first core having an index of refraction n1 and at least one light-guiding region including a pre-selected organic dye characterized by absorbing light of pre-selected wavelengths λ

  • s to which said core is substantially transparent, and by emitting fluorescence radiation when exposed to said light of wavelengths λ

    s, said fluorescence radiation having wavelengths λ

    f different from λ

    s and a decay time of the order of 10-8 seconds or shorter, wherein said light guiding region including said organic dye can e a cladding around said first core or a second core separated from said first core by a clear cladding common to both cores.

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