Giant Goos-Hanchen shifts of waveguide coupled long-range surface plasmon resonance mode

被引：11

作者：

You, Qi

Zhu, Jia-Qi

Guo, Jun

Wu, Lei-Ming

Dai, Xiao-Yu

Xiang, Yuan-Jiang ^{[1
]}

机构：

[1] Shenzhen Univ, SZU NUS Collaborat Innovat Ctr Optoelect Sci & Te, Key Lab Optoelect Devices & Syst, Minist Educ, Shenzhen 518060, Guangdong, Peoples R China

来源：

CHINESE PHYSICS B | 2018年 / 27卷 / 08期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

Goos-Hanchen (GH) shift; planar waveguide (PWG); long-range surface plasmon polartons (LR-SPPs); GRAPHENE; SENSITIVITY; MODULATION; SENSOR; BEAM;

D O I：

10.1088/1674-1056/27/8/087302

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A hybrid structure based on a planar waveguide (PWG) mode coupling a long-range surface plasmon resonance (LRSPR) mode is proposed to enhance the GH shift. Both the PWG mode and LRSPR mode can be in strong resonance, and these two modes can be coupled together due to the normal-mode splitting. The largest GH shift of PWG-coupled LRSPR structure is 4156 times that of the incident beam, which is 23 times and 3.6 times that of the surface plasmon resonance (SPR) structure and the LRSPR structure, respectively. As a GH shift sensor, the highest sensitivity of 4.68 x 10(7)lambda is realized in the coupled structure. Compared with the sensitivity of the traditional SPR structure, the sensitivity of our structure is increased by more than 2 orders, which theoretically indicates that the proposed configuration can be applied to the field of high-sensitivity sensors in the future.

引用

页数：5

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