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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry van Driel
  • Vol. 29, Iss. 4 — Apr. 1, 2012
  • pp: 818–826

Confinement and optical properties of the plasmonic inverse-rib waveguide

H. Benisty and M. Besbes  »View Author Affiliations


JOSA B, Vol. 29, Issue 4, pp. 818-826 (2012)
http://dx.doi.org/10.1364/JOSAB.29.000818


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Abstract

Plasmonic inverse-rib optical waveguides, consisting of a high-index inverse rib embedded in low-index medium above a flat metallic surface, are investigated under four aspects: (i) the optimal angle θ of the rib sidewall for tight modal confinement is assessed, (ii) the effect of the geometric parameters and the wavelength on propagation losses is given, (iii) we use a 3D simulation to assess how well light from an emitting dipole is captured by such a tightly guiding structure, and (iv) we show that for two such parallel hybrid waveguiding systems, when one of them has added gain, we have a plasmonic version of the PT-symmetric waveguide arrangement, and we additionally show that complex gain is needed to restore a truly exceptional point in its propagation constant evolution.

© 2012 Optical Society of America

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(230.7380) Optical devices : Waveguides, channeled
(240.6680) Optics at surfaces : Surface plasmons
(250.3680) Optoelectronics : Light-emitting polymers
(350.4238) Other areas of optics : Nanophotonics and photonic crystals
(130.4110) Integrated optics : Modulators

ToC Category:
Plasmonics

History
Original Manuscript: November 30, 2011
Manuscript Accepted: January 2, 2012
Published: March 30, 2012

Citation
H. Benisty and M. Besbes, "Confinement and optical properties of the plasmonic inverse-rib waveguide," J. Opt. Soc. Am. B 29, 818-826 (2012)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-29-4-818


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