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Advances in OptoElectronics
Volume 2013 (2013), Article ID 856148, 5 pages
http://dx.doi.org/10.1155/2013/856148
Research Article

Important Effect of Defect Parameters on the Characteristics of Thue-Morse Photonic Crystal Filters

1Electrical Department, Faculty of Engineering, Tabriz Branch, Islamic Azad University, Tabriz, Iran
2Electrical Department, Faculty of Engineering, Ahar Branch, Islamic Azad University, Ahar, Iran

Received 24 November 2012; Revised 22 February 2013; Accepted 24 February 2013

Academic Editor: Jung Huang

Copyright © 2013 Hamed Alipour-Banaei et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Design and characterization of optical filters based on photonic crystal Thue-Morse structures are theoretically examined using transfer matrix method. It is shown that by introducing defect layer in the original structure of the proposed filter, main characteristics of it are changed. The main advantage of this defect in Thue-Morse structure is its capability for DWDM communication applications. In other words, achievement of DWDM filter through the Thue-Morse photonic crystal structure is much easier. The desired wavelengths can be achieved by changing the defect parameter. High efficiency of the proposed filter is one of its benefits. The transmission efficiency of this structure is about 96% and the quality factor is more than 77000.