Electromagnetic Bloch-like oscillations in planar quasiperiodic metal-dielectric waveguide arrays
1 State Key Laboratory of Optoelectronic Materials and Technologies, Chongqing University of Arts and Sciences Chongqing 402160, China
2 Chongqing Key Laboratory of Micro/Nano Materials Engineering and Technology - Chongqing 402160, China
Received: 21 April 2015
Accepted: 20 August 2015
We investigate the spatial Bloch-like oscillations in planar double-period silver waveguide arrays. Three types of oscillation modes are obtained in the sixth-generation double-period structure at different incident position, namely positive oscillation mode, negative oscillation mode and breathing-wave–like oscillation mode. The period of the three types of oscillation modes increases when the incident wavelength is redshifted, while the period of the up-oscillation and down-oscillation of the breathing-wave–like oscillation mode decreases and increases, respectively, in the gradient sixth-generation double-period system.
PACS: 61.44.Br – Quasicrystals / 78.67.Pt – Multilayers; superlattices; photonic structures; metamaterials / 78.20.Bh – Theory, models, and numerical simulation
© EPLA, 2015