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Proceedings Paper

Nonlinear electro-optic tuning of plasmonic nano-filter
Author(s): Rehab Kotb; Yehea Ismail; Mohamed A. Swillam
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Paper Abstract

Efficient, easy and accurate tuning techniques to a plasmonic nano-filter are investigated. The proposed filter supports both blue and red shift in the resonance wavelength. By varying the refractive index with a very small change (in the order of 10-3), the resonance wavelength can be controlled efficiently. Using Pockels material, an electrical tuning to the response of the filter is demonstrated. In addition, the behavior of the proposed filter can be controlled optically using Kerr material. A new approach of multi-stage electro-optic controlling is introduced. By cascading two stages and filling the first stage with pockels material and the second stage with kerr material, the output response of the second stage can be controlled by controlling the output response of the first stage electrically. Due to the sharp response of the proposed filter, 60nm shift in the resonance wavelength per 10 voltages is achieved. This nano-filter has compact size, low loss, sharp response and wide range of tunabilty which is highly demandable in many biological and sensing applications.

Paper Details

Date Published: 16 March 2015
PDF: 7 pages
Proc. SPIE 9359, Optical Components and Materials XII, 93591P (16 March 2015); doi: 10.1117/12.2078340
Show Author Affiliations
Rehab Kotb, The American Univ. in Cairo (Egypt)
Yehea Ismail, The American Univ. in Cairo (Egypt)
Mohamed A. Swillam, The American Univ. in Cairo (Egypt)

Published in SPIE Proceedings Vol. 9359:
Optical Components and Materials XII
Shibin Jiang; Michel J. F. Digonnet, Editor(s)

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