Ultra-compact graphene plasmonic filter integrated in a waveguide

doi:10.1088/1674-1056/27/9/094101

中国物理B ›› 2018, Vol. 27 ›› Issue (9): 94101-094101.doi: 10.1088/1674-1056/27/9/094101

所属专题： SPECIAL TOPIC — Nanophotonics

• SPECIAL TOPIC—Recent advances in thermoelectric materials and devices • 上一篇下一篇

Ultra-compact graphene plasmonic filter integrated in a waveguide

Baoxin Liao(廖宝鑫), Xiangdong Guo(郭相东), Hai Hu(胡海), Ning Liu(刘宁), Ke Chen(陈科), Xiaoxia Yang(杨晓霞), Qing Dai(戴庆)

1 Division of Nanophotonics, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China;
2 University of Chinese Academy of Sciences, Beijing 100049, China

收稿日期:2018-06-04 修回日期:2018-07-23 出版日期:2018-09-05 发布日期:2018-09-05
通讯作者: Xiaoxia Yang, Qing Dai E-mail:daiq@nanoctr.cn;yangxx@nanoctr.cn
基金资助:
Project supported by the National Basic Key Research Program of China (Grant No. 2015CB932400), the National Key Research and Development Program of China (Grant No. 2016YFA0201600), the National Natural Science Foundation of China (Grant Nos. 51372045, 11504063, and 11674073), the Key Program of the Bureau of Frontier Sciences and Education, Chinese Academy of Sciences (Grant No. QYZDBSSW- SLH021), and the Science and Technology Projects of Beijing City, China (Grant No. Z161100002116016).

Ultra-compact graphene plasmonic filter integrated in a waveguide

Baoxin Liao(廖宝鑫)^1,2, Xiangdong Guo(郭相东)^1,2, Hai Hu(胡海)^1,2, Ning Liu(刘宁)^1,2, Ke Chen(陈科)^1,2, Xiaoxia Yang(杨晓霞)^1,2, Qing Dai(戴庆)^1,2

1 Division of Nanophotonics, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China;
2 University of Chinese Academy of Sciences, Beijing 100049, China

Received:2018-06-04 Revised:2018-07-23 Online:2018-09-05 Published:2018-09-05
Contact: Xiaoxia Yang, Qing Dai E-mail:daiq@nanoctr.cn;yangxx@nanoctr.cn
Supported by:
Project supported by the National Basic Key Research Program of China (Grant No. 2015CB932400), the National Key Research and Development Program of China (Grant No. 2016YFA0201600), the National Natural Science Foundation of China (Grant Nos. 51372045, 11504063, and 11674073), the Key Program of the Bureau of Frontier Sciences and Education, Chinese Academy of Sciences (Grant No. QYZDBSSW- SLH021), and the Science and Technology Projects of Beijing City, China (Grant No. Z161100002116016).

摘要/Abstract

摘要：

Graphene plasmons have become promising candidates for deep-subwavelength nanoscale optical devices due to their strong field confinement and low damping. Among these nanoscale optical devices, band-pass filter for wavelength selection and noise filtering are key devices in an integrated optical circuit. However, plasmonic filters are still oversized because large resonant cavities are needed to perform frequency selection. Here, an ultra-compact filter integrated in a graphene plasmonic waveguide was designed, where a rectangular resonant cavity is inside a graphene nanoribbon waveguide. The properties of the filter were studied using the finite-difference time-domain method and demonstrated using the analytical model. The results demonstrate the band-pass filter has a high quality factor (20.36) and electrically tunable frequency response. The working frequency of the filter could also be tuned by modifying the cavity size. Our work provides a feasible structure for a graphene plasmonic nano-filter for future use in integrated optical circuits.

关键词: graphene plasmons, plasmonic filter

Abstract:

Key words: graphene plasmons, plasmonic filter

中图分类号: (Electromagnetic wave propagation; radiowave propagation)

41.20.Jb

42.82.Et (Waveguides, couplers, and arrays)

廖宝鑫, 郭相东, 胡海, 刘宁, 陈科, 杨晓霞, 戴庆. Ultra-compact graphene plasmonic filter integrated in a waveguide[J]. 中国物理B, 2018, 27(9): 94101-094101.

Baoxin Liao(廖宝鑫), Xiangdong Guo(郭相东), Hai Hu(胡海), Ning Liu(刘宁), Ke Chen(陈科), Xiaoxia Yang(杨晓霞), Qing Dai(戴庆). Ultra-compact graphene plasmonic filter integrated in a waveguide[J]. Chin. Phys. B, 2018, 27(9): 94101-094101.

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Ultra-compact graphene plasmonic filter integrated in a waveguide

Ultra-compact graphene plasmonic filter integrated in a waveguide

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