Enhancement of unidirectional transmission through the coupling of nonlinear photonic crystal defects

被引：65

作者：

Lin, XS ^{[1
]}

Wu, WQ

Zhou, H

Zhou, KF

Lan, S

机构：

[1] Shantou Univ, Dept Phys, Shantou 515063, Peoples R China

[2] S China Normal Univ, Sch Informat & Optoelect Sci & Engn, Lab Photon Informat Technol, Guangzhou 510631, Peoples R China

来源：

OPTICS EXPRESS | 2006年 / 14卷 / 06期

关键词：

D O I：

10.1364/OE.14.002429

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We investigate the unidirectional transmission behavior of coupled photonic crystal defects with nonlinearity by using the coupled mode theory, focusing on how to enhance the transmission contrast. Although the unidirectional transmission originates from the asymmetric configuration and nonlinear property of the structure, it is revealed that the maximum transmission contrast depends mainly on two linear factors. For two coupled defects, they are the highest order of the frequency detuning appearing in the transmission formula and the frequency splitting due to the coupling. Our analyses are supported by the numerical simulations based on the finite-difference time-domain technique. An enhancement of the maximum transmission contrast by an order of magnitude is achieved in the structure consisting of two coupled defects. (c) 2006 Optical Society of America.

引用

页码：2429 / 2439

页数：11

共 22 条

[1] Two-dimensional photonic-crystal-slab channel-drop filter with flat-top response [J].

Akahane, Y ;

Asano, T ;

Takano, H ;

Song, BS ;

Takana, Y ;

Noda, S .

OPTICS EXPRESS, 2005, 13 (07) :2512-2530

[2] Optical bistability in finite-size nonlinear bidimensional photonic crystals doped by a microcavity [J].

Centeno, E ;

Felbacq, D .

PHYSICAL REVIEW B, 2000, 62 (12) :R7683-R7686

[3] Theoretical analysis of channel drop tunneling processes [J].

Fan, SH ;

Villeneuve, PR ;

Joannopoulos, JD ;

Khan, MJ ;

Manolatou, C ;

Haus, HA .

PHYSICAL REVIEW B, 1999, 59 (24) :15882-15892

[4] Bistable diode action in left-handed periodic structures [J].

Feise, MW ;

Shadrivov, IV ;

Kivshar, YS .

PHYSICAL REVIEW E, 2005, 71 (03)

[5] All-optical diode in a periodically poled lithium niobate waveguide [J].

Gallo, K ;

Assanto, G ;

Parameswaran, KR ;

Fejer, MM .

APPLIED PHYSICS LETTERS, 2001, 79 (03) :314-316

[6]

Haus H. A., 1984, WAVES FIELDS OPTOELE

[7] Electro-tunable optical diode based on photonic bandgap liquid-crystal heterojunctions [J].

Hwang, J ;

Song, MH ;

Park, B ;

Nishimura, S ;

Toyooka, T ;

Wu, JW ;

Takanishi, Y ;

Ishikawa, K ;

Takezoe, H .

NATURE MATERIALS, 2005, 4 (05) :383-387

[8] Reflectionless multichannel wavelength demultiplexer in a transmission resonator configuration [J].

Jin, CJ ;

Fan, SH ;

Han, SZ ;

Zhang, DZ .

IEEE JOURNAL OF QUANTUM ELECTRONICS, 2003, 39 (01) :160-165

[9] Physical origin of the ultrafast response of nonlinear photonic crystal atoms to the excitation of ultrashort pulses [J].

Lan, S ;

Chen, XW ;

Chen, JD ;

Lin, XS .

PHYSICAL REVIEW B, 2005, 71 (12)

[10]

Lin XS, 2005, CHINESE PHYS LETT, V22, P2847, DOI 10.1088/0256-307X/22/11/034

← 1 2 3 →