Tunable Defect Mode in One-Dimensional Ternary Nanophotonic Crystal with Mirror Symmetry

Journal of Optoelectronical Nanostructures

مقاله 7، دوره 2، شماره 4 - شماره پیاپی 7، بهمن و اسفند 2017، صفحه 83-92   

نوع مقاله: Articles

نویسندگان

Robabeh Talebzadeh^{* 1}؛ Mehrdad Bavaghar²

¹Department of Physics, Tabriz Branch, Islamic Azad University, Tabriz, Iran

²Young Researchers and Elite Club, Tabriz Branch, Islamic Azad University, Tabriz, Iran

تاریخ دریافت: 29 شهریور 1396،  تاریخ بازنگری: 18 دی 1396،  تاریخ پذیرش: 16 بهمن 1396 

چکیده

In this paper, the properties of the defect mode in the photonic band gap of
one-dimensional ternary photonic crystals containing high temperature superconductor
layer (SPCs) have been theoretically investigated. We considered the quasi-periodic
layered structures by choosing two order of ternary Thue-Morse structures with mirror
symmetry. We investigated the transmission spectra of these structures by using the
transfer matrix method and two-fluid model. It is found that the location of defect mode
and the range of photonic band gap can be changed by the incident angle. So that, the
defect mode blue-shifted and disappeared by increasing the incidence angle. We
observed an omnidirectional photonic band gap for the TE polarization that its range is
from 456nm to 520nm. Also, the defect mode can be tuned by the temperature. As a
result, the width of defect mode can be decreased by increasing the temperature,
especially in the vicinity of the critical temperature of superconductor layer. This kind
of SPCs has potential applications in filters, sensors and so on.

کلیدواژه‌ها

Defect mode؛ Nanophotonic crystal؛ Superconductor

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