title: Hybrid plasmonic waveguide for low-loss lightwave guiding.
abstract: A hybrid plasmonic waveguide structure is proposed and fabricated for low-loss lightwave guiding along a metal stripe core. By embedding Au stripe in dual slab waveguides with high refractive-index contrast, the field of the guided mode is confined more in the two dielectric core layers. Thus, the propagation loss is significantly reduced. The guided mode is like a combination of a fundamental long-range surface plasmon polariton strip mode and a dual symmetric dielectric slab mode. We fabricate 5 nm-thick Au stripe optical waveguides and measure the optical properties at a wavelength of 1.31 microm. The propagation loss is less than 1.0 dB/cm with the metal stripe width of 1-5 microm.
authors.affiliation: Convergence Components and Materials Research Laboratory, ETRI, Daejeon 305-700, Republic of Korea. jintae@etri.re.kr
authors.forename: Jin Tae
authors.initials: JT
authors.lastname: Kim
authors.forename: Jung Jin
authors.initials: JJ
authors.lastname: Ju
authors.forename: Suntak
authors.initials: S
authors.lastname: Park
authors.forename: Min-su
authors.initials: MS
authors.lastname: Kim
authors.forename: Seung Koo
authors.initials: SK
authors.lastname: Park
authors.forename: Sang-Yung
authors.initials: SY
authors.lastname: Shin