NanoElectromagnetic Metamaterials Approaching Telecommunications Frequencies

Arrays of gold Rod-Split-Ring-Resonators with structural details down to sub 100 nm, and exhibiting electromagnetic metamaterial (EM³) behavior near telecommunications frequencies, have been produced by nanofabrication. Samples were characterized at the Singapore Synchrotron Light Source ISMI (Infrared Spectro/MIcroscopy) facility using Bruker Optics’ IFS 66v/S Fourier transform interferometer and Hyperion 2000 Microscope powered by synchrotron radiation. Oblique incidence transmission spectra were measured and revealed a spectral resonance around 190 THz. The present work extends the frequency range in which EM³are available, thereby opening up opportunities for new applications in the telecommunications frequency regime.