ULTRA SLOW EM WAVE PROPAGATION CHARACTERISTICS OF LEFT-HANDED MATERIAL LOADED HELICAL GUIDE | Zendy

Dushyant Sharma | Zendy; S.K. Pathak | Zendy

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ULTRA SLOW EM WAVE PROPAGATION CHARACTERISTICS OF LEFT-HANDED MATERIAL LOADED HELICAL GUIDE

Author(s) -

Dushyant Sharma,

S.K. Pathak

Publication year - 2014

Publication title -

progress in electromagnetics research m

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.216

H-Index - 31

ISSN - 1937-8726

DOI - 10.2528/pierm14010102

Subject(s) - left handed , materials science , physics , optics

The dispersion characteristics (!-fl diagram) of a left-handed material (LHM) loaded helical guide is analytically solved and numerically computed for difierent medium properties as well as helical guide parameters. The modal behaviour of this structure has been studied with an aim to achieve ultra slow EM wave over wide bandwidth which flnds potential applications in optical switches and memories for optical processing. Signiflcant amount of phase velocity reduction has been achieved in comparison to when helix is in free space or loaded with normal dielectric medium. Other modal properties such as presence of two fundamental modes | backward and forward wave and their lower cut-ofi frequency (LCF) as well as the bandwidth spectrum is also revealed thoroughly.

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