Abstract: We demonstrate highly efficient couplers in a two-dimensional grating configuration for a vertical fiber-coupling fabricated in the silicon-on-insulator platform. A combination of ...

Abstract: Arrayed waveguide gratings (AWG) have been widely used as wavelength multiplexers and demultiplexers in dense wavelength division multiplexing communications. In this letter, we describe a ...

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As a first indication that our approach of using a grating-graphene metamaterial to enhance nonlinear conversion works, we use a small incident field strength of Ef = 12 kV/cm and observe clear ...