%0 Journal Article
%T Highly Efficient Mode Converter for Coupling Light into Wide Slot Photonic Crystal Waveguide
%A Xingyu Zhang
%A Harish Subbaraman
%A Amir Hosseini
%A Ray T. Chen
%J Physics
%D 2014
%I arXiv
%R 10.1364/OE.22.020678
%X We design, fabricate and experimentally demonstrate a highly efficient adiabatic mode converter for coupling light into a silicon slot waveguide with a slot width as large as 320nm. This strip-to-slot mode converter is optimized to provide a measured insertion loss as low as 0.08dB. Our mode converter provides 0.1dB lower loss compared to a conventional V-shape mode converter. This mode converter is used to couple light into and out of a 320nm slot photonic crystal waveguide, and it is experimentally shown to improve the coupling efficiency up to 3.5dB compared to the V-shape mode converter, over the slow-light wavelength region.
%U http://arxiv.org/abs/1408.3400v1