Title: Effects of superconducting film on the defect mode in dielectric photonic crystal heterostructure
Authors: Hu, Chung-An
Liu, Jia-Wei
Wu, Chien-Jang
Yang, Tzong-Jer
Yang, Su-Lin
Department of Electrophysics
Keywords: Superconductors;Photonic crystals;Wave properties
Issue Date: 1-Mar-2013
Abstract: Effects of superconducting thin film on the defect mode in a dielectric photonic crystal heterostructure (PCH) are theoretically investigated. The considered structure is (12)S-N(21)(N), in which both layers 1 and 2 are dielectrics, layer S is a high-temperature superconducting layer, and N is the stack number. The defect mode is analyzed based on the transmission spectrum calculated by using the transfer matrix method. It is found that, in the normal incidence, the defect mode existing in the host PCH of (12)(N)(21)(N) will be blue-shifted as the thickness of layer S increases. In addition, the defect mode is also blue-shifted for both TE and TM modes in the case of oblique incidence. The embedded superconducting thin film plays the role of tuning agent for the defect mode of PCH. As a result, the proposed structure can be designed as a tunable narrowband transmission filter which could be of technical use in the optoelectronic applications. (c) 2013 Elsevier Ltd. All rights reserved.
URI: http://dx.doi.org/10.1016/j.ssc.2012.12.022
ISSN: 0038-1098
DOI: 10.1016/j.ssc.2012.12.022
Volume: 157
Begin Page: 54
End Page: 57
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