Evanescent

... sensitive fibre optic pH sensor using multiple sol-gel coatings Abstract. The fabrication and characterization of a fibre optic pH sensor based on evanescent wave absorption is presented. The unclad portion of a multi-mode optical fibre is coated with a pH sensitive dye, which is immobilized by ...

See entire post

... metal/dielectric periodic multilayer structures thought to exhibit a new type of photonic transmission band corresponding to resonant tunneling of evanescent waves. • Investigated grating diffraction and its polarization by experiment and theory on surface gratings and volume gratings. • Examined ...

See entire post

... A fiber optic biosensor (FOBS) to monitor mutans streptococci activity in human saliva is developed. The biosensor utilizes e fiber optic evanescent wave spectroscopy to monitor a bacterial mediated biochemical reaction. To achieve this, a short length of the cladding is removed; the fiber ...

See entire post