Hybrid graphene/silicon integrated optical isolators with photonic spin-orbit interaction
Publication in refereed journal


香港中文大学研究人员 ( 现职)

孙贤开教授 (电子工程学系)

马静文先生 (电子工程学系)

全文

数位物件识别号 (DOI) http://dx.doi.org/10.1063/1.4945715

引用次数
Web of Sciencehttp://aims.cuhk.edu.hk/converis/portal/Publication/0WOS source URL

其它资讯

摘要Optical isolators are an important building block in photonic computation and communication. In traditional optics, isolators are realized with magneto-optical garnets. However, it remains challenging to incorporate such materials on an integrated platform because of the difficulty in material growth and bulky device footprint. Here, we propose an ultracompact integrated isolator by exploiting graphene's magneto-optical property on a silicon-on-insulator platform. The photonic nonreciprocity is achieved because the cyclotrons in graphene experiencing different optical spins exhibit different responses to counterpropagating light. Taking advantage of cavity resonance effects, we have numerically optimized a device design, which shows excellent isolation performance with the extinction ratio over 45 dB and the insertion loss around 12 dB at a wavelength near 1.55 mu m. Featuring graphene's CMOS compatibility and substantially reduced device footprint, our proposal sheds light on monolithic integration of nonreciprocal photonic devices. (C) 2http://aims.cuhk.edu.hk/converis/portal/Publication/016 AIP Publishing LLC.

着者Ma JW, Xi X, Yu ZJ, Sun XK
期刊名称Applied Physics Letters
出版年份2http://aims.cuhk.edu.hk/converis/portal/Publication/016
月份4
日期11
卷号1http://aims.cuhk.edu.hk/converis/portal/Publication/08
期次15
出版社AMER INST PHYSICS
国际标準期刊号http://aims.cuhk.edu.hk/converis/portal/Publication/0http://aims.cuhk.edu.hk/converis/portal/Publication/0http://aims.cuhk.edu.hk/converis/portal/Publication/03-6951
电子国际标準期刊号1http://aims.cuhk.edu.hk/converis/portal/Publication/077-3118
语言英式英语

Web of Science 学科类别Physics; Physics, Applied