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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 19 — Sep. 10, 2012
  • pp: 20902–20907

Dispersionless slow light in MIM waveguide based on a plasmonic analogue of electromagnetically induced transparency

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

Optics Express, Vol. 20, Issue 19, pp. 20902-20907 (2012)

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We have proposed a metal-insulator-metal (MIM) waveguide system, which exhibits a significant slow-light effect, based on a plasmonic analogue of electromagnetically induced transparency (EIT). By appropriately adjusting the distance between the two stubs of a unit cell, a flat band corresponding to nearly constant group index over a broad bandwidth of 8.6 THz can be achieved. The analytical results show that the group velocity dispersion (GVD) parameter can reach zero and normalized delay-bandwidth product (NDBP) is more than 0.522. Finite-Difference Time-Domain (FDTD) simulations show that the incident pulse can be slowed down without distortion owing to the low dispersion. The proposed compact configuration can avoid the distortion of signal pulse, and thus may find potential applications in plasmonic slow-light systems, especially optical buffers.

© 2012 OSA

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

ToC Category:
Slow and Fast Light

Original Manuscript: June 6, 2012
Revised Manuscript: August 12, 2012
Manuscript Accepted: August 24, 2012
Published: August 28, 2012

Guoxi Wang, Hua Lu, and Xueming Liu, "Dispersionless slow light in MIM waveguide based on a plasmonic analogue of electromagnetically induced transparency," Opt. Express 20, 20902-20907 (2012)

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