基于倏逝场耦合的石墨烯波导光传输相位特性仿真与实验研究

程杨; 姚佰承; 吴宇; 王泽高; 龚元; 饶云江

doi:10.7498/aps.62.237805

摘要

石墨烯材料应用到各种光波导器件中正成为新一代光子器件的重要发展方向之一，目前基于石墨烯的光纤和集成光子器件研究越来越受到国内外的重视. 本文建立了一种由微纳光纤耦合光倏逝场，并在石墨烯薄膜中传输的模型. 通过有限元分析法，研究了光在这种石墨烯波导中传输光场的强度分布和相位特性，并通过实验进行了验证. 结果表明，沿着微纳光纤-石墨烯光波导传播的倏逝场的强度分布和相位均受石墨烯材料作用，石墨烯材料能有效聚集和导行波导中传输的高阶模，在单位传输长度上具有更密集的等相位面. 本文提出了一种利用微纳光纤耦合光倏逝场研究石墨烯相位响应特性的新方法，对基于石墨烯波导的新型调制器、滤波器、激光器和传感器等光子器件的设计和应用具有一定的参考意义.

关键词:

Abstract

The applications of graphene-based optical waveguide devices have been demonstrated to be one of the important directions of development for a new generation of photonic devices, and the research of graphene-based optical fiber and integrated photonic devices has attracted a great deal of attention at home and abroad. In this paper, a graphene planar optical waveguide is proposed which could transmit light by the evanescent field coupling with a microfiber. Finite element method is adopted to simulate the optical field intensity distribution and phase features of light propagating along graphene planar optical waveguide, and an experiment is performed to verify these features. Experimental results show that the transmission distribution and phases of the evanescent field are modulated by graphene obviously, it could effectively gather and transmit the high-order modes, exhibiting denser equal-phase faces on unit propagating length. In this work, we propose a new method in which the microfiber is adopted to investigate the transmission phase feature of graphene by evanescent wave coupling, which could be used as references for the design and application of graphene-based optical devices, such as modulator, filter, laser and sensor.

Keywords:

作者及机构信息

1.
电子科技大学通信与信息工程学院, 光纤传感与通信教育部重点实验室, 成都 611731;

2.
电子科技大学微电子与固体电子学院, 电子薄膜与集成器件国家重点实验室, 成都 610054

基金项目: 国家自然科学基金青年科学基金（批准号：61107072，61107073）和国家自然科学基金重大项目（批准号：61290312）资助的课题.

Authors and contacts

1.
Key Laboratory of Optical Fiber Sensing and Communication, Ministry of Education, School of Communication and Information Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China;

2.
State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Microelectronics and Solid-State Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China

Funds: Project supported by the Young Scientists Fund of the National Natural Science Foundation of China (Grant Nos. 61107072, 61107073), and the Major Program of the National Natural Science Foundation of China (Grant No. 61290312).

参考文献

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施引文献

[1]	Geim A K, Novoselov K S 2007 Nature Materials 6 183
[2]	Yin W H, Han Q, Yang X H 2012 Acta Phys. Sin. 61 248502 (in Chinese) [尹伟红, 韩勤, 杨晓红 2012 61 248502]
[3]	Grigorenko A N, Polini M, Novoselov K S 2012 Nature Photonics 6 749
[4]	Liu M, Yin X B, Ulin-Avila E, Geng B S, Zentgraf T, Ju L, Wang F, Zhang X 2011 Nature 474 64
[5]	Bao Q L, Zhang H, Wang B, Ni Z H, Haley C, Lim Y X, Wang Y, Tang D Y, Loh K P 2011 Nature Photonics 5 411
[6]	Feng D J, Han W Y, Jiang S Z, Ji W, Jia D F 2013 Acta Phys. Sin 62 054202 (in Chinese) [冯德军, 黄文育, 姜守振, 季伟, 贾东方 2013 62 054202]
[7]	Li H, Anugrah Y, Koester S J, Li M 2012 Appl. Phys. Lett. 101 111110
[8]	Yao B C, Wu Y, Cheng Y, Liu X P, Gong Y, Rao Y J 2012 Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors Beijing, China, October 15–19, 2012 p8421CD
[9]	Zhao J, Zhang G Y, Shi D X 2013 Chin. Phys. B 225 057701
[10]	Tong L M, Gattass R R, Ashcom J B, He S, Lou J Y, Shen M Y, Maxwell I, Mazur E 2003 Nature 426 816
[11]	Vakil A, Engheta N 2011 Science 332 1291
[12]	Yao B C, Wu Y, Jia L, Rao Y J, Gong Y, Jiang C Y 2012 J. Opt. Am. B 29 891
[13]	Mikhailov S A, Ziegler K 2007 Phys. Rev. Lett. 99 016803
[14]	Jablan M, Buljan H, Soljačić M 2009 Phys. Rev. B 80 245435
[15]	Wang Z G, Chen Y F, Li P J, Hao X, Liu J B, Huang R, Li Y R 2011 ACS Nano 5 7149
[16]	He X Y, Liu Z B, Wang D N, Yang M W, Hu T Y, Tian J G 2013 IEEE Photonic. Tech. L 25 14

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