Skip to Content
Find More Like This
Return to Search

Fiber optic refractive index monitor

United States Patent

March 12, 2002
View the Complete Patent at the US Patent & Trademark Office
Sandia National Laboratories - Visit the Intellectual Property Management and Licensing Website
A sensor for measuring the change in refractive index of a liquid uses the lowest critical angle of a normal fiber optic to achieve sensitivity when the index of the liquid is significantly less than the index of the fiber core. Another embodiment uses a liquid filled core to ensure that its index is approximately the same as the liquid being measured.
Weiss; Jonathan David (Albuquerque, NM)
Sandia Corporation (Albuquerque, NM)
08/ 566,340
December 1, 1995
The United States Government has rights in this invention pursuant to Department of Energy Contract No. DE-AC04-94AL85000 with Sandia Corporation.