You-Chia Chang

TL;DR: An ultra-broadband photodetector design based on a graphene double-layer heterostructure is reported, demonstrating room-temperaturePhotodetection from the visible to the mid-infrared range, with mid- Infrared responsivity higher than 1 A W(-1), as required by most applications.

TL;DR: The experimental realization of a multilayer structure of alternating graphene and Al2O3 layers, a structure similar to the metal-dielectric multilayers commonly used in creating visible wavelength hyperbolic metamaterials, is reported.

TL;DR: In this paper, a multi-pass photonic platform is integrated into a large-scale phased array that reduces phase shifter power consumption by nearly 9 times, without sacrificing speed or optical bandwidth.

TL;DR: Jyi-Tyan Yeh, 2 Jonq-Min Liu, 2 Chau-Shioung Yeh and Chih-Kung Lee 1,3,4,* 1Institute of Applied Mechanics, National Taiwan University, Taipei, Taiwan 2 Materials Research Laboratory, Industrial Technology Research Institute, Hsinchu, Taiwan 3 Institute of Engineering Science and Ocean Engineering, National Taiwanese University, Taiwan 4 Department of Engineering and Applied Sciences, National Science Council, Taiwan sReceived 16 September 2004; published 19 January 2005 d

TL;DR: In this paper, a method for analysis of spectroscopic ellipsometry data is demonstrated to extract the optical conductivity of mono-and bilayer chemical-vapor-deposited graphene.