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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 6 — Mar. 15, 2014
  • pp: 1629–1632

Electro-optical graphene plasmonic logic gates

Kelvin J. A. Ooi, Hong Son Chu, Ping Bai, and Lay Kee Ang  »View Author Affiliations


Optics Letters, Vol. 39, Issue 6, pp. 1629-1632 (2014)
http://dx.doi.org/10.1364/OL.39.001629


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Abstract

The versatile control of graphene’s plasmonic modes via an external gate-voltage inspires us to design efficient electro-optical graphene plasmonic logic gates at the midinfrared wavelengths. We show that these devices are superior to the conventional optical logic gates because the former possess cut-off states and interferometric effects. Moreover, the designed six basic logic gates (i.e., NOR/AND, NAND/OR, XNOR/XOR) achieved not only ultracompact size lengths of less than λ/28 with respect to the operating wavelength of 10 μm, but also a minimum extinction ratio as high as 15 dB. These graphene plasmonic logic gates are potential building blocks for future nanoscale midinfrared photonic integrated circuits.

© 2014 Optical Society of America

OCIS Codes
(240.0310) Optics at surfaces : Thin films
(250.5403) Optoelectronics : Plasmonics
(250.3750) Optoelectronics : Optical logic devices

ToC Category:
Optoelectronics

History
Original Manuscript: December 10, 2013
Revised Manuscript: February 13, 2014
Manuscript Accepted: February 14, 2014
Published: March 13, 2014

Citation
Kelvin J. A. Ooi, Hong Son Chu, Ping Bai, and Lay Kee Ang, "Electro-optical graphene plasmonic logic gates," Opt. Lett. 39, 1629-1632 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-6-1629


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