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Towards dispersion characteristics for a new unconventional metal‐clad optical waveguide
Author(s) -
Shahi A. K.,
Singh Vivek,
Ojha S. P.
Publication year - 2007
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.22854
Subject(s) - waveguide , microwave , dielectric , waveguide filter , materials science , optics , metal , bounded function , filter (signal processing) , optoelectronics , physics , engineering , electrical engineering , mathematics , telecommunications , mathematical analysis , filter design , prototype filter , metallurgy
Using Goell's point matching method under weak guidance condition, the modal characteristic equations of a curvilinear triangular cored optical waveguide are obtained in three cases. In one case the proposed waveguide has on its one side a conducting material and other two sides are bounded by dielectric material. We describe it as dielectric‐dielectric‐metal (DDM) waveguide. In other case we consider both the boundaries conducting. We call this as metal‐metal‐dielectric (MMD) waveguide. Finally, we consider all the boundaries conducting. We call this as a metal‐metal‐metal (MMM) waveguide. Results obtained in all three cases are compared. It is found that for a given V ‐value the DDM waveguide will support more modes than MMD and MMM waveguides. Therefore, the MMD or MMM waveguides may be used as a mode filter. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2709–2713, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22854