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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 38, Iss. 16 — Aug. 15, 2013
  • pp: 3078–3081

Plasmonic waveguides with low polarization dependence

Lin Jin, Qin Chen, and Shichao Song  »View Author Affiliations

Optics Letters, Vol. 38, Issue 16, pp. 3078-3081 (2013)

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Plasmonic waveguides essentially support only transverse magnetic modes. A novel plasmonic waveguide consisting of hybrid plasmonic waveguides in both vertical and horizontal directions is proposed to reduce the polarization dependence. In a combined waveguide, surface plasmon polariton (SPP) modes polarized in both vertical and horizontal directions exist in the correspondingly oriented hybrid plasmonic waveguide. In an optimized structure, anticrossing mode coupling is observed between these two SPP modes with a low birefringence by finite-difference time-domain simulation. The energy flux clearly shows the polarization-selective coupling between the polarized guided modes in the feeding silicon waveguide and those in the combined waveguide. Coupling efficiency above 65% is obtained for both polarizations. The proposed plasmonic combined waveguide has a potential application in guiding and processing of light from a fiber with a random polarization state.

© 2013 Optical Society of America

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(230.7370) Optical devices : Waveguides
(240.6680) Optics at surfaces : Surface plasmons

ToC Category:
Optical Devices

Original Manuscript: May 29, 2013
Revised Manuscript: July 17, 2013
Manuscript Accepted: July 18, 2013
Published: August 12, 2013

Lin Jin, Qin Chen, and Shichao Song, "Plasmonic waveguides with low polarization dependence," Opt. Lett. 38, 3078-3081 (2013)

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