Chinese Optics Letters, 2019, 17 (1): 010501, Published Online: Jan. 17, 2019  

Perfect absorption in a monolayer graphene at the near-infrared using a compound waveguide grating by robust critical coupling Download: 972次

Author Affiliations
1 School of Information & Electrical Engineering, Hebei University of Engineering, Handan 056038, China
2 School of Mathematics & Physics, Hebei University of Engineering, Handan 056038, China
3 State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China
Abstract
We present a perfect graphene absorber with a compound waveguide grating at the near-infrared. The analytical approach is mainly based on the coupled leaky mode theory, which turns the design of the absorber to finding out the required leaky modes supported by the grating structure. Perfect absorption occurs only when the radiative loss of the leaky mode matches the intrinsic absorption loss, which is also named the critical coupling condition. Furthermore, we also demonstrate that the critical coupling of the system can be robustly controlled, and the perfect absorption wavelength can be easily tuned by adjusting the parameters of the compound waveguide grating.

Jinhua Hu, Jia Fu, Xiuhong Liu, Danping Ren, Jijun Zhao, Yongqing Huang. Perfect absorption in a monolayer graphene at the near-infrared using a compound waveguide grating by robust critical coupling[J]. Chinese Optics Letters, 2019, 17(1): 010501.

引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!