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PHOTONIC BAND GAPS IN ONE-DIMENSIONAL METALLIC STAR WAVEGUIDE STRUCTURE

By S. K. Srivastava and S. P. Ojha

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Abstract:
In the present communication, we investigate theoretically and study a different type of photonic structure called metallic star waveguide (SWG) structure. The proposed structure, having single homogenous metallic material, is composed of a backbone (or substrate) waveguide along which finite side branches grafted periodically. In order to obtain the dispersion relation and hence the photonic band gaps (PBGs) of the SWG structure the Interface Response Theory (IRT) have been applied. Such types of structures show the band gaps without the contrast in the refractive index of the constituent materials. We also show that the range of forbidden bands can be tuned to different value by varying the number grafted branches of the SWG structures, without changing the other parameters. Moreover, the effects of variation of absorption of metals and plasma frequency on the band gaps of the proposed structures have been investigated.

Citation:
S. K. Srivastava and S. P. Ojha, "Photonic band gaps in one-dimensional metallic star waveguide structure," Progress In Electromagnetics Research, Vol. 84, 349-362, 2008.
doi:10.2528/PIER08080501
http://www.jpier.org/pier/pier.php?paper=08080501

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