基于石墨烯埋入聚合物波导的超宽带紧凑型横磁模偏振器。

Ultra-Broadband and Compact TM-Pass Polarizer Based on Graphene-Buried Polymer Waveguide.

作者信息

Lin Baizhu, Lian Tianhang, Sun Shijie, Zhu Mu, Che Yuanhua, Sun Xueqing, Wang Xibin, Zhang Daming

机构信息

State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China.

出版信息

Polymers (Basel). 2022 Apr 6;14(7):1481. doi: 10.3390/polym14071481.

DOI:10.3390/polym14071481

PMID:35406354

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9002802/

Abstract

We report an ultra-broadband and compact TM-pass polarizer based on graphene-buried polymer waveguides. The characteristic parameters of the polarizer were carefully designed and optimized. The standard microfabrication processes were employed to fabricate the device. The presented polarizers exhibit high polarization-dependent transmission imposing a TE mode cutoff while leaving the TM mode almost unaffected. We experimentally demonstrated the polarizer that has an ultra-high extinction ratio of more than 22.9 dB and 41.9 dB for the monolayer graphene film placed on the surface of core layer and buried in the center of core layer, respectively, and as low insertion loss as ~4.0 dB for the TM mode with the bandwidth over 110 nm. The presented polarizer has the advantages of high extinction ratio, ultra-broadband, low cost, and easy integration with other polymer-based planar lightwave devices.

摘要

我们报道了一种基于石墨烯埋入聚合物波导的超宽带紧凑型横磁（TM）偏振器。对该偏振器的特征参数进行了精心设计和优化。采用标准微加工工艺制造该器件。所展示的偏振器呈现出高偏振相关透射率，使横电（TE）模式截止，而横磁（TM）模式几乎不受影响。我们通过实验证明，对于放置在芯层表面和埋入芯层中心的单层石墨烯薄膜，该偏振器的消光比分别超过22.9 dB和41.9 dB，对于带宽超过110 nm的TM模式，插入损耗低至约4.0 dB。所展示的偏振器具有消光比高、超宽带、低成本以及易于与其他基于聚合物的平面光波器件集成等优点。