Abstract:The recent use of fiber optic wavaguidea for biochemical analyses is mainly based on light intensity changes. Waveguide ellipsometry sensors (WEFE) is proposed for biosensor applications. The WEFE is based on the principle of e].lipsometry. A laser beam propagates in the waveguide with two fundamental modes: transverse electric field, parallel to and perpendicular to the sensing surface. The evanescent waves interact with the adsorbed or conjugated layer of biomolecules, producing changes in the relative phase… Show more
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