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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 34, Iss. 3 — Feb. 1, 2009
  • pp: 310–312

Wavelength-selective directional coupling with dielectric-loaded plasmonic waveguides

Zhuo Chen, Tobias Holmgaard, Sergey I. Bozhevolnyi, Alexey V. Krasavin, Anatoly V. Zayats, Laurent Markey, and Alain Dereux  »View Author Affiliations


Optics Letters, Vol. 34, Issue 3, pp. 310-312 (2009)
http://dx.doi.org/10.1364/OL.34.000310


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Abstract

We consider wavelength-selective splitting of radiation using directional couplers (DCs) formed by dielectric-loaded surface-plasmon-polariton waveguides (DLSPPWs). The DCs were fabricated by depositing sub-wavelength-sized polymer ridges on a gold film using large-scale UV photolithography and characterized at telecommunications wavelengths with near-field microscopy. We demonstrate a DLSPPW-based 45 - μ m -long DC comprising 3 μ m offset S bends and 25 - μ m -long parallel waveguides that changes from the “through” state at 1500 nm to 3 dB splitting at 1600 nm , and show that a 50.5 - μ m -long DC should enable complete separation of the radiation channels at 1400 and 1620 nm . The DC performance is found to be in good agreement with full vectorial three-dimensional finite-element simulations.

© 2009 Optical Society of America

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(240.6680) Optics at surfaces : Surface plasmons
(130.5460) Integrated optics : Polymer waveguides

ToC Category:
Integrated Optics

History
Original Manuscript: November 10, 2008
Revised Manuscript: December 18, 2008
Manuscript Accepted: December 18, 2008
Published: January 26, 2009

Citation
Zhuo Chen, Tobias Holmgaard, Sergey I. Bozhevolnyi, Alexey V. Krasavin, Anatoly V. Zayats, Laurent Markey, and Alain Dereux, "Wavelength-selective directional coupling with dielectric-loaded plasmonic waveguides," Opt. Lett. 34, 310-312 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-3-310

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