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Opt Lett. 2007 Jun 15;32(12):1737-9.

Design of a subwavelength bent C-aperture waveguide.

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  • 1Department of Applied Physics, Stanford University, CA 94305, USA.


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.

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