title: All-plasmonic switching based on thermal nonlinearity in a polymer plasmonic microring resonator.
abstract: We experimentally investigated thermal nonlinear effects in a hybrid Au/SiO(2)/SU-8 plasmonic microring resonator for nonlinear switching. Large ohmic loss in the metal layer gave rise to a high rate of light-to-heat conversion in the plasmonic waveguide, causing an intensity-dependent thermo-optic shift in the microring resonance. We obtained 30 times larger resonance shift in the plasmonic microring than in a similar SU-8 dielectric microring. Using an in-plane pump-and-probe configuration, we also demonstrated all-plasmonic nonlinear switching in the plasmonic microring with an on-off switching contrast of 4 dB over 50 mW input power.
authors.affiliation: Department of Electrical and Computer Engineering, University of Alberta, Edmonton, Alberta, T6G 2V4, Canada. perron@ualberta.ca
authors.forename: David
authors.initials: D
authors.lastname: Perron
authors.forename: Marcelo
authors.initials: M
authors.lastname: Wu
authors.forename: Cameron
authors.initials: C
authors.lastname: Horvath
authors.forename: Daniel
authors.initials: D
authors.lastname: Bachman
authors.forename: Vien
authors.initials: V
authors.lastname: Van