title: Design of a subwavelength bent C-aperture waveguide.
abstract: We present a design for a subwavelength C-shaped optical waveguide with a 90 degrees junction that efficiently transports light while maintaining tight confinement with an exit spot size of lambda/7. Finite-difference time-domain simulations of perfect electric conductors and Au C-aperture waveguides are performed for optical frequencies. A design resonant near 780 nm is presented, with a spot size of 107 nm x 107 nm and an energy density enhancement factor of 10 for a bent waveguide of total length 1.4 microm.
authors.affiliation: Department of Applied Physics, Stanford University, CA 94305, USA. pch@stanford.edu
authors.forename: Paul
authors.initials: P
authors.lastname: Hansen
authors.forename: Lambertus
authors.initials: L
authors.lastname: Hesselink
authors.forename: Brian
authors.initials: B
authors.lastname: Leen