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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 37, Iss. 21 — Nov. 1, 2012
  • pp: 4564–4566

Submicrometer radius and highly confined plasmonic ring resonator filters based on hybrid metal-oxide-semiconductor waveguide

Hong-Son Chu, Yuriy Akimov, Ping Bai, and Er-Ping Li  »View Author Affiliations

Optics Letters, Vol. 37, Issue 21, pp. 4564-4566 (2012)

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We numerically report the submicrometer radius (0.5 μm) and high confinement (mode area λ2/1200) plasmonic ring resonators for both all-pass and add-drop filters based on the hybrid metal-oxide-semiconductor (Ag-SiO2-Si) waveguide platform. The best tradeoff between the propagation length and the confinement of this hybrid plasmonic waveguide platform is also discussed and compared to the dielectric-loaded plasmonic waveguide counterpart. We show that the ring resonator all-pass filter features an extinction ratio as high as 23 dB with a transmission loss of 1.5 dB, and a wide free spectral range of 168 nm with a bandwidth of 14 nm. Moreover, the demonstrated add-drop filter achieves an extinction ratio larger than 12 dB with a channel isolation between the through and drop channels of 13.5 dB at the resonant wavelength. These demonstrated plasmonic devices reveal as potential building blocks for future nanoscale electronic-photonic integrated circuits.

© 2012 Optical Society of America

OCIS Codes
(230.7370) Optical devices : Waveguides
(250.5403) Optoelectronics : Plasmonics
(230.7408) Optical devices : Wavelength filtering devices

ToC Category:

Original Manuscript: August 28, 2012
Manuscript Accepted: October 1, 2012
Published: October 31, 2012

Hong-Son Chu, Yuriy Akimov, Ping Bai, and Er-Ping Li, "Submicrometer radius and highly confined plasmonic ring resonator filters based on hybrid metal-oxide-semiconductor waveguide," Opt. Lett. 37, 4564-4566 (2012)

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