Refraction-based photonic crystal diode

被引：57

作者：

Cicek, Ahmet ^{[2
]}

Yucel, Melike B. ^{[1
]}

Kaya, Olgun Adem ^{[3
]}

Ulug, Bulent ^{[1
]}

机构：

[1] Akdeniz Univ, Fac Sci, Dept Phys, TR-07058 Antalya, Turkey

[2] Mehmet Akif Ersoy Univ, Fac Arts & Sci, Dept Phys, TR-15100 Burdur, Turkey

[3] Inonu Univ, Fac Educ, Dept Comp Educ & Educ Technol, TR-44280 Malatya, Turkey

来源：

OPTICS LETTERS | 2012年 / 37卷 / 14期

关键词：

UNIDIRECTIONAL TRANSMISSION; OPTICAL DIODE; EQUATIONS; GRATINGS;

D O I：

10.1364/OL.37.002937

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A system composed of air holes in a dielectric host to form two square photonic crystals, with the same orientation and lattice constant but different scatterer radii, making an interface along their body diagonals, is numerically demonstrated to facilitate unidirectional light transmission. Band structure computations are carried out via the plane wave expansion method, whereas finite-difference time-domain simulations are carried out to investigate the transient behavior. Unidirectional light transmission is achieved over two adjacent stop bands along the Gamma X direction, which are circumvented in the forward direction by scaling down the wave vector and rotating the surface normal. Contrast ratios as high as 0.9 are attained within the lower stop band. (C) 2012 Optical Society of America

引用

页码：2937 / 2939

页数：3

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