NUMERICAL MODELING OF POLYMER OPTICAL FIBER REFRACTOMETRIC SENSORS WITH HEMISPHERICAL DETECTION ELEMENTS

摘要

We describe the mathematical modeling of the evanescent-field refractometric sensor which employs plastic optical fibers and plastic hemispherical optical detection element. We show that characteristics of the light source, evolution of light distribution in the optical fibers, and finite non-homogeneity of plastic material have a significant effect on sensor performance.