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Optical probe

  • US 5,124,130 A
  • Filed: 05/22/1990
  • Issued: 06/23/1992
  • Est. Priority Date: 05/22/1990
  • Status: Expired due to Term
First Claim
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1. An integral optical fiber sensor probe comprisinga plurality of optical fibers for transmitting light, at least two of the optical fibers having a fiber bend therein,the fiber bends and a portion of the fibers adjacent the fiber bends encapsulated within cured potting encapsulant material forming a solid integral probe body which is generally tubular along its length and having a diameter across its length,a plurality of sample chambers formed in the cured potting encapsulant material of the solid integral probe body, each sample chamber defined by side walls and a bottom wall and having an open portion,each sample chamber disposed between two opposed fiber faces of optical fibers opposite each other on opposite sides of the sample chamber, one of said two opposed fiber faces being a face of one of the optical fibers having a fiber bend therein, light transmitted through one of the optical fibers passing through the sample chamber from one fiber face to the other,each sample chamber containing a chemical indicating material covering the two opposed fiber faces, the chemical indicating material for changing in response to a specific chemical passing into the sample chamber through the open portion of the sample chamber so that light is changed which is transmitted from one opposed fiber face and through changed chemical indicating material to the other fiber face, andthe portions of the fibers adjacent the fiber bends and the fiber bends spaced apart from each other in the solid integral probe body.

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