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|Title||Properties of graded index thin film waveguides comprising left-handed materials|
|Title in Arabic||خصائص الموجهات الموجية ذات معامل الانكسار المتدرج والمحتوية على مواد يسارية|
Abstract Dispersion properties of guided modes in three-layer slab waveguide structures with a linearly graded-index proﬁle film are investigated. Closed-form expressions for electric and magnetic ﬁelds and the dispersion relation are derived. For transverse electric (TE) and transverse magnetic (TM) waves, the three normalized parameters: the asymmetry measure (a), the generalized frequency (V) and the generalized guide index (b) are utilized to study the dispersion properties of the proposed slab waveguide structures. We assume three structures: the first comprises a left-handed material (LHM) cladding, the second comprises a LHM substrate layer and the third has a LHM cladding and LHM substrate. The results show that the proposed waveguide exhibit the normal dispersion property in which b increases as V increases.
|Publisher||الجامعة الإسلامية - غزة|
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