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Rashidi S, Jamshidi-Ghaleh K, Vahedi A. Tuning the Defect Mode in Ternary PC Structure with External Voltage: Designing Controllable Optical Filter . ICOP & ICPET _ INPC _ ICOFS 2015; 21 :1221-1224
URL: http://opsi.ir/article-1-654-en.html
URL: http://opsi.ir/article-1-654-en.html
Abstract: (3305 Views)
In this paper, behavior of defect mode in ternary one-dimensional photonic crystal (MgF2/Ag/TiO2)5LiNbO3(TiO2/Ag/MgF2)5 photonic crystal, under applied external electric voltage is investigated. The defect layer, LiNbO3, is an electro-optical material which its refractive index is voltage dependent. In comparison, MgF2 and TiO2 have very low electro-optical coefficients. Therefore, by applying voltage from the Ag layers, the refractive index of the defect layer in direction of propagation and accordingly, the optical path length of the ray passing through the structure will be changed, so, the position of the defect mode will also shift. This structure can be employed to design a tunable all-optical filter.
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