Premium
Scattering and radiation characteristics of step discontinuity in a double‐negative (DNG) slab waveguide operating in the evanescent surface mode
Author(s) -
Huang Meng,
Xu Shanjia
Publication year - 2006
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.21607
Subject(s) - discontinuity (linguistics) , slab , optics , radiation , waveguide , planar , microwave , radiation mode , scattering , multi mode optical fiber , physics , evanescent wave , dispersion (optics) , single mode optical fiber , mathematics , mathematical analysis , computer science , quantum mechanics , laser , computer graphics (images) , geophysics , optical fiber
The scattering and radiation characteristics of a step discontinuity in a double‐negative (DNG) slab waveguide operating in the evanescent surface mode are analyzed by a method which combines the rigorous mode‐matching method with multimode network theory. In the analysis, the radiation problem is transformed into a propagation problem so as to tremendously simplify the calculation procedure. The dispersion properties of the grounded planar DNG slab waveguide for ordinary and evanescent surface modes are examined, from which the left‐hand property of the operating mode is verified. The relative scattered power and radiation pattern of the step discontinuity are given for the first time, from which the backward radiation of the stepped DNG guide is clearly demonstrated. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 1085–1088, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21607