Sensitivity enhancement in evanescent optical waveguide sensors

作者: G.J. Veldhuis , O. Parriaux , H.J.W.M. Hoekstra , P.V. Lambeck

DOI: 10.1109/50.842082

关键词:

摘要: It is shown, that the sensitivity of effective refractive index on cladding in evanescent optical waveguide sensors, can be larger than unity. This implies attenuation a guided wave propagating immersed an absorptive medium made free-space through same medium. The conditions and physical explanation for this puzzling behavior are identified as practical application, absorption sensor, based suspended silicon slab waveguide, proposed where enhanced by factor 1.35.

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