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Reflectionless tunneling of infrared radiation through subwavelength slit in a waveguide
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SYSNO ASEP 0350310 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Reflectionless tunneling of infrared radiation through subwavelength slit in a waveguide Author(s) Shvartsburg, A. B. (RU)
Kuzmiak, Vladimír (URE-Y) RIDNumber of authors 2 Source Title Journal of the Optical Society of America. B. - : Optical Society of America - ISSN 0740-3224
Roč. 27, č. 12 (2010), s. 2766-2773Number of pages 8 s. Language eng - English Country US - United States Keywords wave propagation ; tunneling ; subwavelength transport Subject RIV JA - Electronics ; Optoelectronics, Electrical Engineering CEZ AV0Z20670512 - URE-Y (2005-2011) UT WOS 000284761300043 DOI 10.1364/JOSAB.27.002766 Annotation A new effect of resonant tunneling of fundamental mode of optical radiation through the subwavelength slit, formed by smoothly shaped narrowing in the waveguide, is examined. An effective energy transfer by evanescent waves is shown to be determined by the geometry of curvilinear narrowing. Spectra of reflectionless transmittance for waves, 2.5 – 3 times longer, than the width of slit, are found. Dependence of resonant tunneling on the geometrical parameters of narrowing as well as the splitting of resonant maxima resulting in formation of two peaks of tunneling transmittance are demonstrated. An additional insight into the properties of narrowed waveguide has been obtained through the visualization of the variation of the field patterns associated with the modes for a specific configuration on the wavelength. Workplace Institute of Radio Engineering and Electronics Contact Petr Vacek, vacek@ufe.cz, Tel.: 266 773 413, 266 773 438, 266 773 488 Year of Publishing 2011
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