The optical properties and magneto-optical (MO) activity in a bilayer nanostructure consisting of a ferromagnetic dielectric film and a noble metal film perforated with circle annular arrays are investigated. Enhanced Faraday rotation peaks with opposite signs are found. Meanwhile, enhanced polar Kerr rotation with large reflectance is also obtained at the same wavelength. The peak positions of the MO rotations accompanied by large transmittance and reflectance can be efficiently tailored by changing the geometrical parameters and the filling medium. These findings are important for applications in highly integrated optoelectronics and multiple channel magneto-optical devices. (C) 2016 Optical Society of America.
展开▼
