Ultrahigh nonlinear nanoshell plasmonic waveguide with total energy confinement

作者：Hossain Md M^*; Turner Mark D; Gu Min

来源：Optics Express, 2011, 19(24): 23800-23808.

DOI：10.1364/OE.19.023800

Dielectric nonlinear waveguides have reached their maximum potential in achieving high nonlinearity due to the limitation of mode confinement beyond the diffraction limit. We theoretically demonstrate that a plasmonic waveguide consisted of a nonlinear subwavelength core coated by a metallic nanoshell can achieve ultrahigh nonlinearity and complete mode confinement. Our results show that the subwavelength nanoshell plasmonic waveguide can possess an ultrahigh Kerr nonlinearity up to 4.1 x 10(4)W(-1)m(-1) with nearly 100% of the mode energy residing inside the waveguide at lambda = 1.55 mu m. The optical properties are explored with detailed numerical simulations and are explained in terms of their dispersive properties.

• 出版日期2011-11-21