Whispering-gallery and Luneburg-lens effects in a beam-fed circularly-layered dielectric cylinder

Details Whispering-gallery and Luneburg-lens effects in a beam-fed circularly-layered dielectric cylinder Whispering-gallery and Luneburg-lens effects in a beam-fed circularly-layered dielectric cylinder

2010-01-23

arxiv.org/abs/1001.4113v1

IEEE Trans. Antennas Propag., vol. 50, no. 9, pp. 1245-1249, 2002

Physics

Optics

5 pages, 7 figures

Scientific paper

The whispering-gallery mode (WGM) excitation and Luneburg lens (LL) effect are studied for a lossy circularly-layered dielectric cylinder illuminated by a beam field. The latter is simulated by the Complex Source-Point (CSP) beam. Exact series solution to the wave scattering problem is used to obtain the far-field patterns and directivity. The WG mode effect is shown to undermine the LL performance. Index Terms: Layered circular dielectric cylinder, Complex source point beam, Whispering-gallery modes, Luneburg lens.

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