Wavelength-Polarization Multiplexer for Routing and Detection of Surface Plasmon Polaritons Based on Plasmonic Gratings
Wavelength-Polarization Multiplexer for Routing and Detection of Surface Plasmon Polaritons Based on Plasmonic Gratings
复制标题
用于基于等离激元光栅的表面等离激元极化子的路由和检测的波长偏振复用器
DOI：
10.1021/acsphotonics.0c00590
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发表时间：
2020
期刊：
影响因子：
7
通讯作者：
Wang Qilong
中科院分区：
文献类型：
--
作者：
Ji Jitao;Zhai Yusheng;Wu Zhipeng;Ma Xiangyu;Wang Qilong
高带宽和高速等离子体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。在等离子体光栅的基础上，在每个检测通道中实现表面等离子体激元的激发、传播和检测。通过测量四个通道的波长和偏振相关光电流，通过实验证明了概念验证的多路复用功能。此外，时域有限差分计算证实了实验结果。所提出的多路复用器是高度集成OEIC的一个有前途的构建模块，可以指导高带宽高速等离子体互连的潜在发展方向。
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.