Graphene and silicon nanophotonics
Abstract: Nanostructured materials have opened up many opportunities to control the light. In
this talk, I will focus on two topics in graphene and silicon nanophotonics. First, I will talk about
graphene-based hyperbolic metamaterials. These metamaterials consist of graphene-dielectric
multilayers, exhibiting hyperbolic dispersion in the mid-infrared range. Second, I will talk about
resonance-free light recycling in the silicon photonic platform. This light recycling approach,
based on mode multiplexing, can reduce the power consumption of active photonic devices by 9
time. I will also introduce my future work of combining silicon photonics, metamaterials and
graphene, which can lead toward scalable nanophotonics.
Short Bio: You-Chia Chang (張祐嘉) is currently a postdoctoral research scientist in the
Department of Electrical Engineering at Columbia University. He received his Ph.D. in Applied
Physics at University of Michigan in 2016. He also received a M. S. degree in Applied Mechanics
in 2004 and a B. S. degree in Mechanical Engineering in 2002 at National Taiwan University. He
had worked as an associated researcher in Material and Chemical Research Laboratories of
Industrial Technology Research Institute in Taiwan from 2004 to 2008. His research interests
include silicon photonics, metamaterials, 2D materials, nanophotonics and ultrafast optics.