title: Surface plasmon waveguide Schottky detector.
abstract: A surface plasmon polariton detector is demonstrated at infra-red wavelengths. The device consists of a metal stripe on silicon forming a Schottky contact thereon and supporting surface a plasmon polariton mode that is strongly confined and localised to the metal-semiconductor interface. Detection of optical radiation below the bandgap of silicon (at infrared wavelengths) occurs through internal photoemission. Responsivities of 0.38 and 1.04 mA/W were measured via end-fire coupling to a tapered optical fibre, at room temperature and at a wavelength of 1280 nm, for gold and aluminium stripes on n-type silicon, respectively. The device can be integrated with other structures used in nano-plasmonics, nano-photonics or silicon-based photonics, and it holds promise for short-reach optical interconnects and power monitoring applications.
authors.affiliation: School of Information Technology and Engineering, University of Ottawa, 161 Louis Pasteur St., Ottawa, K1N 6N5, Canada.
authors.forename: Ali
authors.initials: A
authors.lastname: Akbari
authors.forename: R Niall
authors.initials: RN
authors.lastname: Tait
authors.forename: Pierre
authors.initials: P
authors.lastname: Berini