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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 9 — May. 6, 2013
  • pp: 11315–11321

Compact bandwidth-tunable polarization filter based on a plasmonic heterograting

Yuanhai Lin, Tianrui Zhai, Qianli Ma, Hongmei Liu, and Xinping Zhang  »View Author Affiliations

Optics Express, Vol. 21, Issue 9, pp. 11315-11321 (2013)

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A plasmonic heterograting device, consisting of two juxtaposed parallel gratings with different periods, is demonstrated to function as a compact bandwidth-tunable polarization filter. The essential aspect of the structure is that the grating couples into a photonic mode of the substrate. Using this device, a linearly polarized spectrum can be conveniently and selectively picked out from nonpolarized white light. The bandwidth depends on the incident angle and the overlap of the first-order diffraction spectra of the two different grating, and can be freely narrowed. The tuning characteristics of the heterograting are investigated both theoretically and experimentally. The unique physical features potentially enable the development of new polarization elements and optical devices.

© 2013 OSA

OCIS Codes
(120.2440) Instrumentation, measurement, and metrology : Filters
(230.1950) Optical devices : Diffraction gratings
(250.5403) Optoelectronics : Plasmonics

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: March 7, 2013
Revised Manuscript: April 26, 2013
Manuscript Accepted: April 29, 2013
Published: May 1, 2013

Yuanhai Lin, Tianrui Zhai, Qianli Ma, Hongmei Liu, and Xinping Zhang, "Compact bandwidth-tunable polarization filter based on a plasmonic heterograting," Opt. Express 21, 11315-11321 (2013)

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