Metallic photonic crystals for terahertz tunable filters

被引：10

作者：

Fan Fei ^{[1
]}

Chang ShengJiang ^{[1
]}

Hou Yu ^{[1
]}

机构：

[1] Nankai Univ, Inst Modern Opt, Key Lab Opt Informat Sci & Technol, Minist Educ, Tianjin 300071, Peoples R China

来源：

SCIENCE CHINA-INFORMATION SCIENCES | 2012年 / 55卷 / 01期

基金：

中国国家自然科学基金;

关键词：

terahertz; metallic photonic crystals; liquid crystals; filter; WAVE-GUIDE; SWITCH; BANDGAP; PLATE;

D O I：

10.1007/s11432-011-4485-3

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

We have investigated the photonic band gap and transmission properties of metallic photonic crystals (PCs) filled with liquid crystal (LC) in the terahertz region by using the finite element method and the finite-difference time-domain method. The calculations on the LC-filled metallic PC and metallic PC waveguide demonstrated that they can realize low-loss broadband terahertz tunable filters, which have a tunable range of about 110 GHz and extinction ratio larger than 35 dB. Moreover, the 3 dB bandwidths of the filters keep constant. The designed filters based on the metallic PC can greatly improve the performances in terms of loss, bandwidth and tunable region compared to those based on the LC-filled dielectric PC.

引用

页码：72 / 78

页数：7

共 21 条

[1] THz parallel plate photonic waveguides [J].

Bingham, A ;

Zhao, Y ;

Grischkowsky, D .

APPLIED PHYSICS LETTERS, 2005, 87 (05)

[2] Terahertz two-dimensional high-Q photonic crystal waveguide cavities [J].

Bingham, A. L. ;

Grischkowsky, D. .

OPTICS LETTERS, 2008, 33 (04) :348-350

[3] LARGE ELECTROMAGNETIC STOP BANDS IN METALLODIELECTRIC PHOTONIC CRYSTALS [J].

BROWN, ER ;

MCMAHON, OB .

APPLIED PHYSICS LETTERS, 1995, 67 (15) :2138-2140

[4] Terahertz imaging with compressed sensing and phase retrieval [J].

Chan, Wai Lam ;

Moravec, Matthew L. ;

Baraniuk, Richard G. ;

Mittleman, Daniel M. .

OPTICS LETTERS, 2008, 33 (09) :974-976

[5] Magnetically tunable room-temperature 2π liquid crystal terahertz phase shifter [J].

Chen, CY ;

Hsieh, CF ;

Lin, YF ;

Pan, RP ;

Pan, CL .

OPTICS EXPRESS, 2004, 12 (12) :2625-2630

[6] All-metallic three-dimensional photonic crystals with a large infrared bandgap [J].

Fleming, JG ;

Lin, SY ;

El-Kady, I ;

Biswas, R ;

Ho, KM .

NATURE, 2002, 417 (6884) :52-55

[7] Sub-terahertz on-off switch based on a two-dimensional photonic crystal infiltrated by liquid crystals [J].

Ghattan, Z. ;

Hasek, T. ;

Wilk, R. ;

Shahabadi, M. ;

Koch, M. .

OPTICS COMMUNICATIONS, 2008, 281 (18) :4623-4625

[8] EXISTENCE OF A PHOTONIC GAP IN PERIODIC DIELECTRIC STRUCTURES [J].

HO, KM ;

CHAN, CT ;

SOUKOULIS, CM .

PHYSICAL REVIEW LETTERS, 1990, 65 (25) :3152-3155

[9] Voltage-controlled liquid-crystal terahertz phase shifter and quarter-wave plate [J].

Hsieh, CF ;

Pan, RP ;

Tang, TT ;

Chen, HL ;

Pan, CL .

OPTICS LETTERS, 2006, 31 (08) :1112-1114

[10] Low-dispersive dielectric mirrors for future wireless terahertz communication systems [J].

Ibraheem, Ibraheem A. ;

Krumbholz, Norman ;

Mittleman, Daniel ;

Koch, Martin .

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, 2008, 18 (01) :67-69

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