Abstract
This paper presents theoretical investigation of the electromagnetic wave tunneling and anomalous transmission around the trapped modes in a pseudochiral omega slab. The dispersion relation, the conditions of the trapped modes, and the evanescent wave coupling and tunneling in two different reciprocal pseudochiral omega slab structures are derived. The Berreman’s matrix method is applied to obtain the transmission coefficients across the pseudochiral omega slab. When the structure is perturbed, a resonance phenomenon is detected around the trapped modes. This resonance results in transmission anomalies (total transmission and total reflection) and dramatic field amplifications around the trapped modes. The number of the discrete trapped modes and then the resonance frequencies are prescribed by the parameters of the pseudochiral omega slab such as the value of the omega parameter and its orientation and the slab thickness.
Highlights
Material technology is succeeding towards creating new materials with specific electromagnetic (EM) and optical properties which do not exist in natural materials
To investigate the behavior of the evanescent and propagating electromagnetic waves around the pseudochiral omega slab, consider the physical model shown in Fig. 1, where a reciprocal pseudochiral omega slab is placed in an anisotropic ambient medium
This paper presents analytical investigation of the electromagnetic wave coupling, tunneling, and resonances in a pseudochiral omega slab
Summary
Slabs received: 17 August 2016 accepted: 29 December 2016 Published: 06 February 2017. This paper presents theoretical investigation of the electromagnetic wave tunneling and anomalous transmission around the trapped modes in a pseudochiral omega slab. The dispersion relation, the conditions of the trapped modes, and the evanescent wave coupling and tunneling in two different reciprocal pseudochiral omega slab structures are derived. The constitutive parameters of a pseudochiral omega medium can be extracted from the reflection and transmission coefficients in a rectangular waveguide using some TE/TM modes[6]. The effects of the omega elements and their orientation on the band where the trapped modes are embedded, the number of the discrete trapped modes, and on the resonances are reconnoitered as well Such an EM behavior in synthesized material is expected to have a remarkable influence on diagnosing and characterizing such materials and to have several implications in the design of imminent electromagnetic and optical devices
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