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Microbend fiber-optic chemical sensor

United States Patent

March 19, 2002
View the Complete Patent at the US Patent & Trademark Office
Sandia National Laboratories - Visit the Intellectual Property Management and Licensing Website
A microbend fiber-optic chemical sensor for detecting chemicals in a sample, and a method for its use, is disclosed. The sensor comprises at least one optical fiber having a microbend section (a section of small undulations in its axis), for transmitting and receiving light. In transmission, light guided through the microbend section scatters out of the fiber core and interacts, either directly or indirectly, with the chemical in the sample, inducing fluorescence radiation. Fluorescence radiation is scattered back into the microbend section and returned to an optical detector for determining characteristics of the fluorescence radiation quantifying the presence of a specific chemical.
Weiss; Jonathan D. (Albuquerque, NM)
The United States of America as represented by the U.S. Department of Energy (Washington, DC)
09/ 677,611
September 28, 2000
The present invention was conceived and developed under U.S. Government Contract No. DE-AC04-94AL85000 awarded by the U.S. Department of Energy. The Government has rights in this invention.