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Chin. Phys. B, 2020, Vol. 29(7): 077803    DOI: 10.1088/1674-1056/ab9433
Special Issue: SPECIAL TOPIC —Terahertz physics
TOPICAL REVIEW—Terahertz physics Prev   Next  

Recent progress in graphene terahertz modulators

Xieyu Chen(陈勰宇)1, Zhen Tian(田震)1, Quan Li(李泉)1, Shaoxian Li(李绍限)1, Xueqian Zhang(张学迁)1, Chunmei Ouyang(欧阳春梅)1, Jianqiang Gu(谷建强)1, Jiaguang Han(韩家广)1, Weili Zhang(张伟力)2
1 Center for Terahertz Waves and School of Precision Instrument and Optoelectronics Engineering, and the Key Laboratory of Optoelectronics Information and Technology(Ministry of Education), Tianjin University, Tianjin 300072, China;
2 School of Electrical and Computer Engineering, Oklahoma State University, Stillwater, Oklahoma 74078, USA
Abstract  Graphene has been recognized as a promising candidate in developing tunable terahertz (THz) functional devices due to its excellent optical and electronic properties, such as high carrier mobility and tunable conductivity. Here, we review graphene-based THz modulators we have recently developed. First, the optical properties of graphene are discussed. Then, graphene THz modulators realized by different methods, such as gate voltage, optical pump, and nonlinear response of graphene are presented. Finally, challenges and prospective of graphene THz modulators are also discussed.
Keywords:  terahertz      graphene      modulators  
Received:  27 March 2020      Revised:  03 May 2020      Published:  05 July 2020
PACS:  78.67.Wj (Optical properties of graphene)  
  87.50.U-  
  42.79.Hp (Optical processors, correlators, and modulators)  
Fund: Project supported by the National Key Research and Development Program of China (Grant No. 2017YFA0701004) and the National Natural Science Foundation of China (Grant Nos. 61675145, 61722509, 61735012, and 61420106006).
Corresponding Authors:  Zhen Tian, Weili Zhang     E-mail:  weili.zhang@okstate.edu

Cite this article: 

Xieyu Chen(陈勰宇), Zhen Tian(田震), Quan Li(李泉), Shaoxian Li(李绍限), Xueqian Zhang(张学迁), Chunmei Ouyang(欧阳春梅), Jianqiang Gu(谷建强), Jiaguang Han(韩家广), Weili Zhang(张伟力) Recent progress in graphene terahertz modulators 2020 Chin. Phys. B 29 077803

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