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Nano Fiber with a Metal Clad

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In this article we theoretically analyzed the beam propagation properties of an optical nano fiber with a metal clad. By solving the Maxwell's equations for this fiber and applying suitable boundary conditions the behavior of the propagation constant as a function of the core radius or clad radius is investigated. Our study shows that electromagnetic fields are localized at the two metal–dielectric interfaces with a beam diameter less than the wavelength and the field decay evanescently on both sides of each interface. The linear dependency of the propagation constant on the refractive index of the surrounding medium shows that the silicon nano fiber with a silver clad is promising for the development of miniaturized optical sensors with high sensitivities.
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Keywords: NANO FIBER; PLASMONICS; SUB-WAVELENGTH OPTICS

Document Type: Research Article

Publication date: 2010-06-01

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  • Journal of Computational and Theoretical Nanoscience is an international peer-reviewed journal with a wide-ranging coverage, consolidates research activities in all aspects of computational and theoretical nanoscience into a single reference source. This journal offers scientists and engineers peer-reviewed research papers in all aspects of computational and theoretical nanoscience and nanotechnology in chemistry, physics, materials science, engineering and biology to publish original full papers and timely state-of-the-art reviews and short communications encompassing the fundamental and applied research.
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