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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 38, Iss. 4 — Feb. 15, 2013
  • pp: 558–560

Gain-assisted trapping of light in tapered plasmonic waveguide

Guoxi Wang, Hua Lu, and Xueming Liu  »View Author Affiliations

Optics Letters, Vol. 38, Issue 4, pp. 558-560 (2013)

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We have investigated the slow light and trapping effects in tapered metal-insulator-metal plasmonic waveguides. It is found that a significant reduction of group velocity (<0.01c) can be obtained when considering the intrinsic loss of realistic metal. The theoretical analysis shows that the group velocity can be further decreased, even approach zero in the lossless metallic waveguides. The perfect trapping of light is realized when an appropriate gain material is incorporated in the core layer to compensate metallic loss. The proposed ultracompact configuration may find excellent applications on nanoscale optical storages.

© 2013 Optical Society of America

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(200.4490) Optics in computing : Optical buffers
(240.6680) Optics at surfaces : Surface plasmons

ToC Category:
Optics at Surfaces

Original Manuscript: November 28, 2012
Revised Manuscript: December 21, 2012
Manuscript Accepted: January 2, 2013
Published: February 13, 2013

Guoxi Wang, Hua Lu, and Xueming Liu, "Gain-assisted trapping of light in tapered plasmonic waveguide," Opt. Lett. 38, 558-560 (2013)

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