双平行圆柱形MDM纳米棒等离子体波导的传输特性分析

李志全; 孟靓; 朱君; 童凯; 王志斌

doi:10.3788/fgxb20133408.1073

您当前的位置：

首页 >

文章列表页 >

双平行圆柱形MDM纳米棒等离子体波导的传输特性分析

发光学应用及交叉前沿 | 更新时间：2020-08-12

- 双平行圆柱形MDM纳米棒等离子体波导的传输特性分析
- Propagation Properties of A Plasmonic Waveguide with Double Parallel Cylindrical MDM Nanorods
- 发光学报 2013年34卷第8期页码：1073-1078
- 作者机构：
  
  燕山大学电气工程学院, 河北秦皇岛 066004
- 作者简介：
- 基金信息：
  
  国家自然科学基金(61107039)();河北省自然科学基金(F2012203204)资助项目()
- DOI：10.3788/fgxb20133408.1073
  中图分类号： TN252
- 收稿日期：2013-05-03，
  
  修回日期：2013-06-06，
  
  纸质出版日期：2013-08-10
- 稿件说明：
移动端阅览
李志全, 孟靓, 朱君, 童凯, 王志斌. 双平行圆柱形MDM纳米棒等离子体波导的传输特性分析[J]. 发光学报, 2013,34(8): 1073-1078

LI Zhi-quan, MENG Liang, ZHU Jun, TONG Kai, WANG Zhi-bin. Propagation Properties of A Plasmonic Waveguide with Double Parallel Cylindrical MDM Nanorods[J]. Chinese Journal of Luminescence, 2013,34(8): 1073-1078
李志全, 孟靓, 朱君, 童凯, 王志斌. 双平行圆柱形MDM纳米棒等离子体波导的传输特性分析[J]. 发光学报, 2013,34(8): 1073-1078 DOI： 10.3788/fgxb20133408.1073.

LI Zhi-quan, MENG Liang, ZHU Jun, TONG Kai, WANG Zhi-bin. Propagation Properties of A Plasmonic Waveguide with Double Parallel Cylindrical MDM Nanorods[J]. Chinese Journal of Luminescence, 2013,34(8): 1073-1078 DOI： 10.3788/fgxb20133408.1073.

摘要

设计了一种由双平行圆柱形纳米棒构成的金属-介质-金属(MDM)型等离子体波导

采用时域有限差分方法(FDTD)分析了波导结构的传输特性。当光波垂直主轴入射时

电磁场被很好地局限在两纳米棒所形成的中间区域以及介质层中

从而在该波导中能够有效地耦合电磁场能量。在工作波长为1 550 nm的情况下

随着内层金属芯半径的增大

有效折射率减小

传播距离增大;而中间介质层厚度增大时

有效折射率增大

传播距离减小。当外层金属壳厚为20 nm时

电场可以很好地被限制在纳米棒的介质层内。上述结果表明:通过调整波导结构的几何参数可以显著提高金属纳米棒的场限制

降低波导本身的损耗

使波导的有效折射率和传播长度达到最优化。这种等离子体波导能够实现亚波长的光限制

可以应用于光子器件集成和传感器领域。

Abstract

A kind of metal-dielectric-metal (MDM) plasmonic waveguide with double parallel cylindrical nanorods was investigated. The propagation properties of the waveguide structure were analyzed using the finite-difference time-domain (FDTD) method. The results show that the electromagnetic field is well confined to the dielectric layer and the intermediate region formed by the two cylindrical nanorods when the incident light is perpendicular to the major axis

so the filed can be efficiently coupled into the waveguide. At the working wavelength

=1 550 nm

the effective index decreases with the increase of the inner radius

meanwhile the propagation length increases as the inner radius

increases. However

in the case of larger

the effective index becomes large

and the propagation length becomes short. In addition

the field can be predominantly confined within the dielectric layer in the case of

=20 nm. In short

adjusting the geometrical parameters can significantly improve the confinement of the SPPs fields and reduce the losses of the waveguide

so that the effective refractive index and propagation length of the waveguide can be optimized. Subwavelength optical confinement can be achieved in this kind of plasmonic waveguide

which will be applied to the fields of photonic device integration and sensors.

关键词

Keywords

references

Barnes W L, Dereux A, Ebbesen T W. Surface plasmon subwavelength optics [J]. Nature, 2003, 424：824-830.[2] Ozbay E. Plasmonics： Merging photonics and electronics at nanoscale dimensions [J].Science, 2006, 311(5758)：189-193.[3] Maire S A. Plasmonics： The promise of highly integrated optical devices [J]. IEEE J. Sel. Top. Quant. Electron., 2007, 12(6)：l67l-l677.[4] Zhuang T J, Su Z S, Liu Y D, et al. Enhanced performance of small molecular weight organic solar cells by incorporating Ag nanoparticles [J]. Chin. J. Lumin.(发光学报), 2011, 32(12)：1266-1270 (in Chinese).[5] Berini P, Leon I D. Surface plasmon-polariton amplifiers and lasers [J]. Nat. Photon., 2012, 6(1)：16-24.[6] Chau Y F, Tsai D P, Hu G W, et al. Subwavelength optical imaging through a silver nanorod [J]. Opt. Eng., 2007, 46(3)：039701-1-4.[7] Zijlstra P, Chon J W M, Gu M. Five-dimensional optical recording mediated by surface plasmons in gold nanorods [J]. Nature, 2009, 459：410-413.[8] Guo Y N, Xue W R, Zhang W M. Propagation properties of a surface plasmonic waveguide with double elliptical metallic nanorods [J]. Acta Phys. Sinica (物理学报), 2009, 58(6)：4168-4174 (in Chinese).[9] Pahlevaninezhad H, Darcie T E, Heshmat B. Two-wire waveguide for terahertz [J]. Opt. Exp., 2010, 18(7)：7415-7420.[10] Qin X J, Guo Y N, Xue W R. Numerical simulation of a surface plasmonic waveguide with double parallel columniform metallic nanorods coated with gain medium [J]. Chin. J. Lasers (中国激光), 2011, 38(3)：0310001-1-6 (in Chinese).[11] Xiao X X, Chen Y G. Investigation of optical wave coupling between two subwavelength silts in metallic sheet [J]. Chin. J. Lumin.(发光学报), 2009, 30(5)：682-686 (in Chinese).[12] Wang X Y, Zhu Z W. A novel tunable filter using magnetized plasma defect in one demension photonic crystal [J]. Chin. J. Lumin.(发光学报), 2012, 33(7)：747-753 (in English).[13] Flammer P D, Banks J M, Furtak T E, et al. Hybrid plasmon/dielectric waveguide for integrated silicon-on-insulator optical elements [J]. Opt. Exp., 2010, 18(20)：21013-21023.[14] Bian Y S, Zheng Z, Liu Y, et al. Hybrid wedge plasmon polariton waveguide with good fabrication-error tolerance for ultra-deep-subwavelength mode confinement [J]. Opt. Exp., 2011, 19(23)：22417-22422.[15] Rakic A D, Djuristic A B, Elazar J M, et al. Optical properties of metallic films for vertical-cavity optoelectronic devices [J]. Appl. Opt., 1998, 37(22)：5271-5283.

浏览量

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

THz波段光子晶体带隙影响因素研究