Optical sensing of measurands

Details Optical sensing of measurands Optical sensing of measurands

2006-03-14

2009-10-13

Lee (Andrew), Hwa S (Department: 2886)

Optics: measuring and testing

By light interference

Using fiber or waveguide interferometer

C356S481000

Reexamination Certificate

active

07602498

ABSTRACT:
A dome-shaped chemical sensing probe comprises an optical fiber or may be mounted on an optical fiber. The probe has a chemically sensitive measuring material which exhibits a change in volume and/or a change in refractive index in the presence of a given chemical. The change in volume and/or refractive index gives a change in an optical path length through the probe which can be measured interferometrically.

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