Broadband and High Extinction Ratio Mode Converter Using the Tapered Hybrid Plasmonic Waveguide

被引：23

作者：

Cheng, Zhuo ^{[1
]}

Wang, Jun ^{[1
]}

Yang, Zeyuan ^{[1
]}

Yin, Haiying ^{[1
]}

Wang, Wei ^{[1
]}

Huang, Yongqing ^{[1
]}

Ren, Xiaomin ^{[1
]}

机构：

[1] Beijing Univ Posts & Telecommun, State Key Lab Informat Photon & Opt Commun, Beijing 10086, Peoples R China

来源：

IEEE PHOTONICS JOURNAL | 2019年 / 11卷 / 03期

基金：

北京市自然科学基金; 美国国家科学基金会;

关键词：

Mode converter; hybrid plasmonic waveguide; TE0-to-TM1; POLARIZATION ROTATOR; SILICON; ULTRACOMPACT; CONVERSION; PHOTONICS; PLATFORM;

D O I：

10.1109/JPHOT.2019.2919588

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We propose and numerically analyze a broadband and high extinction ratio mode converter to achieve the mode conversion between the fundamental transverse electric mode (TE0) and the first-order transverse magnetic mode (TM1). The mode converter is achieved by using the tapered hybrid plasmonic waveguide which the metal is directly covered on the Si waveguide without a thin low-index layer. After optimizing the structure of the tapered hybrid plasmonic waveguide, a wide operation bandwidth of 100 nm is obtained with the extinction ratio of the TM1 mode and TE0 mode larger than 20 dB in the output Si waveguide for the forward propagation. And for the back propagation, the operation bandwidth over 65 nm is obtained with the extinction ratio larger than 20 dB in the output Si waveguide. The whole footprint of the mode converter is only 0.8 x 11 mu m(2). Fabrication tolerance analysis is also demonstrated.

引用

页数：8

共 26 条

[1] Integrating photonics with silicon nanoelectronics for the next generation of systems on a chip [J].