Wide-band optical field concentrator for low-index core propagation

D. de Ceglia; M. De Sario; A. D'Orazio; V. Petruzzelli; M. A. Vincenti; F. Prudenzano; M. Scalora

doi:10.2971/jeos.2006.06023

Journal of the European Optical Society - Rapid publications, Vol 1 (2006)

Wide-band optical field concentrator for low-index core propagation

D. de Ceglia, M. De Sario, A. D'Orazio, V. Petruzzelli, M. A. Vincenti, F. Prudenzano, M. Scalora

Abstract

We propose a novel chirped structure consisting of a low index polymer core bounded by modulated multilayer claddings, to realize an optical field concentrator with virtually zero propagation losses in a wide spectral range, independent of wave polarization. In spite of the absence of the total internal reflection mechanism, properly designed multilayer claddings ensure the achievement of unitary transmittance in a wide spectral range, including the widely used wavelengths for optical communications. Several cladding geometries obtained by varying the thicknesses of the cladding layers are reported and discussed.

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