title: Nonlinear response of a silicon waveguide enhanced by a metal grating.
abstract: We theoretically demonstrate that nonlinear optical response in a thin silicon waveguide within a wide wavelength regime can be enhanced by a metal grating. Numerical simulation indicates that the enhancement factor of the four-wave mixing signal varies with the position. The largest enhancement factor of the four-wave mixing is more than 10(4) at a certain position in the IR spectrum with proper geometric parameters. More importantly, the wavelength of four-wave mixing with the same enhancement factor can be controlled dynamically within a wide wavelength regime.
authors.affiliation: College of Information, Mechanical & Electrical Engineering, Shanghai Normal University, Shanghai 201418, China.
authors.forename: Zhihong
authors.initials: Z
authors.lastname: Chen
authors.forename: Lei
authors.initials: L
authors.lastname: Dai
authors.forename: Chun
authors.initials: C
authors.lastname: Jiang