Graded index photonic hole: Analytical and rigorous full wave solution

被引：31

作者：

Liu, Shiyang ^{[1
,2
,3
]}

Li, Li ^{[2
,3
,4
]}

Lin, Zhifang ^{[2
,3
,4
,5
]}

Chen, H. Y. ^{[5
,6
]}

Zi, Jian ^{[2
,3
,4
]}

Chan, C. T. ^{[5
]}

机构：

[1] Zhejiang Normal Univ, Inst Informat Opt, Jinhua 321004, Zhejiang, Peoples R China

[2] Fudan Univ, Surface Phys Lab, Shanghai 200433, Peoples R China

[3] Fudan Univ, Dept Phys, Shanghai 200433, Peoples R China

[4] Fudan Univ, Key Lab Micro & Nano Photon Struct, Minist Educ, Shanghai 200433, Peoples R China

[5] Hong Kong Univ Sci & Technol, Dept Phys, Kowloon, Hong Kong, Peoples R China

[6] Soochow Univ, Sch Phys Sci & Technol, Suzhou 215006, Jiangsu, Peoples R China

来源：

PHYSICAL REVIEW B | 2010年 / 82卷 / 05期

关键词：

METAMATERIALS; CLOAKING; OPTICS;

D O I：

10.1103/PhysRevB.82.054204

中图分类号：

T [工业技术];

学科分类号：

120111 [工业工程];

摘要：

We present a rigorous full wave approach to the omnidirectional photonic hole (PH), an optical system inspired by celestial phenomena and characterized by a radially graded refractive index n(r)similar to 1/r(alpha/2). It is analytically demonstrated that light capture is effective for alpha >=alpha(c)=2. Our analyses are corroborated by precise numerical simulations of steady-state and time-evolution behaviors. The simulations indicate that the optical energy entering the PH system can be kept in captivity for a time duration t(d) scaling as t(d)similar to 1/(alpha(c)-alpha) when alpha approaches alpha(c). A crucial difference in the time evolution of fields is shown between the cases with alpha close to and equal to alpha(c).

引用

页数：8

共 28 条

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[2]

Brigham E. O., 1988, FAST FOURIER TRANSFO

[3]

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