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Design and analysis of an integrated antiresonant reflecting optical waveguide refractive-index sensor
Authors:Bernini Romeo  Campopiano Stefania  Zeni Luigi
Affiliation:Dipartimento di Ingegneria dell'Informazione, Seconda Università degli Studi di Napoli, Aversa, Italy.
Abstract:An integrated optical waveguide refractometer, believed to be novel, is presented. The sensor is based on an antiresonant reflecting optical waveguide and uses the strong attenuation dependence on the refractive index of antiresonant cladding layers as the sensing principle. The theory and the operation of the sensor are discussed in terms of one- and two-dimensional geometry. The theoretical predictions and numerical analysis show that a versatile sensor can be realized. The design trade-offs are discussed, and the sensitivity and measurement range are presented.
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