Slowing light by activating an oscillatory mode in a negative refractive waveguide composed of all dielectric metamaterials

Abstract

We employ dielectric metamaterials to construct an all-dielectric negative refractive waveguide (NRW) in which the negative Goos-Hänchen effect is used to trap the incident wave in simulation. The use of a dielectric metamaterial eliminates the ohmic losses from metal, which not only lengthens photon-trapping time but also enables the NRW to maintain the ability to slow light. In addition, we validate numerical simulation with experimental measurements, which agree with the simulation results with a frequency offset of <1.2%. Finally, by verifying that light is slowed in an all-dielectric NRW, we claim that a dielectric metamaterial can possess negative identities.