Wavelength-Polarization Multiplexer for Routing and Detection of Surface Plasmon Polaritons Based on Plasmonic Gratings,ACS Photonics

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Wavelength-Polarization Multiplexer for Routing and Detection of Surface Plasmon Polaritons Based on Plasmonic Gratings
ACS Photonics ( IF 6.5 ) Pub Date : 2020-06-23 , DOI: 10.1021/acsphotonics.0c00590
Jitao Ji ₁ , Yusheng Zhai ₁ , Zhipeng Wu ₁ , Xiangyu Ma ₁ , Qilong Wang ₁

Affiliation

High-bandwidth and high-speed plasmonic interconnection is a long-term goal in constructing next-generation optoelectronic integrated circuits (OEICs). Here, we report a strategy to achieve plasmonic interconnection with higher bandwidth by simultaneously utilizing wavelength and polarization multiplexing technologies. The proposed multiplexer consists of four orthogonal detection channels operating under different wavelengths and polarization conditions. On the basis of plasmonic gratings, the excitation, propagation, and detection of surface plasmon polaritons are realized in each detection channel. A proof-of-concept multiplexing functionality is experimentally demonstrated through the measured wavelength- and polarization-dependent photocurrent of the four channels. Additionally, finite-difference time-domain calculations corroborate the experimental results. The proposed multiplexer is a promising building block for highly integrated OEICs and can guide the potential development direction of high-speed plasmonic interconnection with high bandwidth.

中文翻译：

基于等离子光栅的表面等离激元极化的路由和检测的波长极化复用器

高带宽和高速等离子互连是构建下一代光电集成电路（OEIC）的长期目标。在这里，我们报告了一种通过同时利用波长和偏振复用技术来实现更高带宽的等离子体互连的策略。所提出的多路复用器由在不同波长和偏振条件下工作的四个正交检测通道组成。在等离激元光栅的基础上，在每个检测通道中实现了表面等离激元极化子的激发，传播和检测。通过测量四个通道的与波长和偏振有关的光电流，实验证明了概念验证的复用功能。另外，时域有限差分计算证实了实验结果。拟议中的多路复用器是高度集成的OEIC的有前途的构建基块，并可以指导高带宽的高速等离子体互连的潜在发展方向。

更新日期：2020-08-19

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