Author(s): Han Zhao, William S. Fegadolli, Jiakai Yu, Zhifeng Zhang, Li Ge, Axel Scherer, and Liang Feng
An all-optical switch design uses an asymmetric waveguide that reduces the beam power requirements, which is essential for making such devices practical.

[Phys. Rev. Lett. 117, 193901] Published Mon Oct 31, 2016