Low-Loss and Wide-Band Polarization Converter Based on a Hybrid Plasmonic Waveguide with Asymmetric Ag Strips

被引：0

作者：

Wang, Zhen ^{[1
]}

Wang, Jin ^{[2
]}

Zhai, Yumeng ^{[2
]}

Lu, Yunqing ^{[2
]}

Sun, Xiaohan ^{[1
]}

机构：

[1] Southeast Univ, Natl Res Ctr Opt Sensing Commun Integrated Networ, Nanjing 210096, Jiangsu, Peoples R China

[2] Nanjing Univ Posts & Telecommun, Sch Telecommun & Informat Engn, Nanjing 210003, Jiangsu, Peoples R China

来源：

2017 16TH INTERNATIONAL CONFERENCE ON OPTICAL COMMUNICATIONS & NETWORKS (ICOCN 2017) | 2017年

基金：

中国国家自然科学基金;

关键词：

Integrated optics device; Polarization selective device; Surface-plasmon polaritons; ULTRA-COMPACT;

D O I：

暂无

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：

A polarization converter (PC) based on the mode coupling in a hybrid plasmonic waveguide (HPW) is proposed. This PC comprises a Si core, a low index insulator layer surrounding the Si core, and two asymmetrically arranged Ag strips. Two orthogonal hybrid polarization modes are excited within the low index insulator layer. By exploiting the mode characteristics of these two hybrid polarization modes, a compact and low loss polarization converter can be realized. As a comparison, SiO2 and Al2O3 are used as the low index layer. Numerical simulations show that a better polarization conversion performance is obtained when SiO2 is used in the HPW-PC, which exhibits a polarization conversion efficiency (PCE) of 99.99%, an insertion loss (IL) of 0.82dB and an extinction ratio (ER) of 30.4 dB at the wavelength of 1550 nm for a conversion length of 4.58 mu m. Also, for the C-band, the PCE is greater than 99.6%, the IL is below 1dB and the ER is larger than 24dB.

引用

页数：3

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