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U.S. Department of Energy
Office of Scientific and Technical Information

Fiber optic refractive index monitor

Patent ·
OSTI ID:874282
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.
Research Organization:
SANDIA CORP
DOE Contract Number:
AC04-94AL85000
Assignee:
Sandia Corporation (Albuquerque, NM)
Patent Number(s):
US 6356675
OSTI ID:
874282
Country of Publication:
United States
Language:
English

References (1)

Piezooptic behavior of certain fluids journal January 1985