Now showing items 1-3 of 3

    • Active dielectric antenna on chip for spatial light modulation 

      Qiu, Ciyuan; Chen, Jianbo; Xia, Yang; Xu, Qianfan (2012-11-14)
      Integrated photonic resonators are widely used to manipulate light propagation in an evanescently-coupled waveguide. While the evanescent coupling scheme works well for planar optical systems that are naturally waveguide ...
    • Efficient Modulation of 1.55 μm Radiation with Gated Graphene on a Silicon Microring Resonator 

      Qiu, Ciyuan; Gao, Weilu; Vajtai, Robert; Ajayan, Pulickel M.; Kono, Junichiro; Xu, Qianfan (2014)
      The gate-controllability of the Fermi-edge onset of interband absorption in graphene can be utilized to modulate near-infrared radiation in the telecommunication band. However, a high modulation efficiency has not been ...
    • Silicon Photonic Devices for Optical Computing 

      Qiu, Ciyuan (2013-11-26)
      The requirement for high performance computer will be significantly increased by the fast development of the internet. However, traditional CMOS computer will meet its bottleneck due to the miniaturization problem. Optical ...