Effect of Double Defects on Transmission Spectra of One-Dimensional Photonic Crystals

Abstract:

Considered the model of the one-dimensional photonic crystals (1-D PCs) with double defects, the refractive indexes (n2’, n3’ and n2’’, n3’’) of the double defects were 2.0, 4.0 and 4.0, 2.0 respectively. With parameter n2=1.5, n3=2.5, by theoretical calculations with characteristic matrix method, the results shown that for a certain number (14 was taken) of layers of the 1-D PCs, when the double defects abutted, there was a defect band gap in the stop band gap, while when the double defects separated, there occurred two defect band gaps in the stop band gap; besides, with the separation of the two defects, the transmittance of the double defect band gaps decreased gradually. In addition, in this progress, the frequency range of the stop band gap has a little increase from 0.092 to 0.095.

• Periodical: Materials Science Forum (Volumes 663-665)
• Pages: 725-728
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.663-665.725
• Online since: November 2010
• Authors: Yuan Ming Huang, Qing Lan Ma, Bao Gai Zhai, Yun Gao Cai
• Keywords: Characteristic Matrix, Double Defect, One-Dimensional Photonic Crystal, Transmittance Spectrum

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