Journal
OPTICS LETTERS
Volume 32, Issue 12, Pages 1737-1739Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.32.001737
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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 gm. (C) 2007 Optical Society of America
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