title: Guided subwavelength slow-light mode supported by a plasmonic waveguide system.
abstract: We introduce a plasmonic waveguide system, which supports a subwavelength broadband slow-light guided mode with a tunable slowdown factor at a given wavelength. The system consists of a metal-dielectric-metal (MDM) waveguide side-coupled to a periodic array of MDM stub resonators. The slowdown factor at a given wavelength can be tuned by adjusting the geometrical parameters of the system. In addition, there is a trade-off between the slowdown factor and the propagation length of the supported optical mode. Finally, we show that light can be coupled efficiently from a conventional MDM waveguide to the plasmonic waveguide system.
authors.affiliation: Department of Electrical and Computer Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, USA.
authors.forename: Liu
authors.initials: L
authors.lastname: Yang
authors.forename: Changjun
authors.initials: C
authors.lastname: Min
authors.forename: Georgios
authors.initials: G
authors.lastname: Veronis