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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 22 — Oct. 24, 2011
  • pp: 21605–21613

Effective plasmonic mode-size converter

Hae-Ryeong Park, Jong-Moon Park, Min-su Kim, Jung Jin Ju, Jung-Han Son, and Myung-Hyun Lee  »View Author Affiliations

Optics Express, Vol. 19, Issue 22, pp. 21605-21613 (2011)

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Plasmonic mode-size converters (PMSCs) for long-range surface plasmon polaritons (LR-SPPs) at the wavelength of 1.55 μm are presented. The PMSC is composed of an insulator-metal-insulator waveguide (IMI-W), a laterally tapered insulator-metal-insulator-metal-insulator waveguide (LT-IMIMI-W), and an IMIMI-W in series. The mode-intensity sizes of the LR-SPPs for the IMI-W and the IMIMI-W were not only calculated using a finite element method but were also experimentally measured. The propagation losses of the IMI-W and the IMIMI-W as well as the coupling losses between them were analyzed by the cut-back method to investigate the effect of LT-IMIMI-Ws. By using the PMSC with a ∼27 ° angled LT-IMIMI-W, the coupling loss between a polarization-maintaining fiber and a 3 μm-wide IMIMI-W was reduced by ∼3.4 dB. Moreover, the resulting mode-intensity in the output of the PMSC was squeezed to ∼35% of the mode-intensity in the input IMI-W. The PMSC may be potentially useful for bridging micro- to nano-plasmonic integrated circuits.

© 2011 OSA

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(160.5470) Materials : Polymers
(240.6680) Optics at surfaces : Surface plasmons
(250.5403) Optoelectronics : Plasmonics

ToC Category:
Integrated Optics

Original Manuscript: August 22, 2011
Revised Manuscript: September 22, 2011
Manuscript Accepted: September 26, 2011
Published: October 18, 2011

Hae-Ryeong Park, Jong-Moon Park, Min-su Kim, Jung Jin Ju, Jung-Han Son, and Myung-Hyun Lee, "Effective plasmonic mode-size converter," Opt. Express 19, 21605-21613 (2011)

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