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Journals and Conferences
It is shown, that the sensitivity of the effective refractive index on the cladding index in evanescent optical waveguide sensors, can be larger than unity. This implies that the attenuation of a guided wave propagating in a waveguide immersed in an absorptive medium can be made larger than that of a free-space wave propagating through the same medium. The… (More)
A fabrication technique by KOH etching for very thin free standing plane parallel silicon bridges in a  silicon wafer is presented. The applications of such a stress free slab as an evanescent optical waveguide sensor of unusually high sensitivity are discussed.