title: Tunable optical analog to electromagnetically induced transparency in graphene-ring resonators system.
abstract: The analogue of electromagnetically induced transparency in optical ways has shown great potential in optical delay and quantum-information technology due to its flexible design and easy implementation. The chief drawback for these devices is the bad tunability. Here we demonstrate a tunable optical transparency system formed by graphene-silicon microrings which could control the transparent window by electro-optical means. The device consists of cascaded coupled ring resonators and a graphene/graphene capacitor which integrated on one of the rings. By tuning the Fermi level of the graphene sheets, we can modulate the round-trip ring loss so that the transparency window can be dynamically tuned. The results provide a new method for the manipulation and transmission of light in highly integrated optical circuits and quantum information storage devices.
authors.affiliation: Key Laboratory of Instrumentation Science &Dynamic Measurement (North University of China), Ministry of Education, Taiyuan 030051, Shanxi Province, China.
authors.forename: Yonghua
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Key Laboratory of Instrumentation Science &Dynamic Measurement (North University of China), Ministry of Education, Taiyuan 030051, Shanxi Province, China.
authors.forename: Chenyang
authors.initials: C
authors.lastname: Xue
authors.affiliation: Key Laboratory of Instrumentation Science &Dynamic Measurement (North University of China), Ministry of Education, Taiyuan 030051, Shanxi Province, China.
authors.forename: Zengxing
authors.initials: Z
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Instrumentation Science &Dynamic Measurement (North University of China), Ministry of Education, Taiyuan 030051, Shanxi Province, China.
authors.forename: Hua
authors.initials: H
authors.lastname: Zheng
authors.affiliation: Key Laboratory of Instrumentation Science &Dynamic Measurement (North University of China), Ministry of Education, Taiyuan 030051, Shanxi Province, China.
authors.forename: Wendong
authors.initials: W
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Instrumentation Science &Dynamic Measurement (North University of China), Ministry of Education, Taiyuan 030051, Shanxi Province, China.
authors.forename: Shubin
authors.initials: S
authors.lastname: Yan