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Proceedings Paper

Silicon subwavelength structures for communications and sensing (Conference Presentation)
Author(s): Robert Halir; Juan Manuel Luque-González; Gonzalo Wangüemert-Pérez; Alejandro Ortega-Moñux; Dan-Xia Xu; Jens H. Schmid; Pavel Cheben; Íñigo Molina-Fernández

Paper Abstract

Silicon sub-wavelength structures have found widespread applications in devices ranging from fiber-to-chip couplers to spectrometers. So far, these structures have been mainly used to engineer the local refractive index. Here we focus on two further applications. We describe how to engineer the waveguide electromagnetic field distribution for enhanced evanescent field sensing, predicting a 6-fold enhancement of the sensitivity compared to conventional waveguides. We furthermore report experimental results on broadband multimode interference couplers, which, by leveraging the inherent anisotropy of the sub-wavelength structures, achieve virtually perfect operation over a bandwidth of more than 300nm at telecom wavelengths.

Paper Details

Date Published: 16 June 2017
PDF: 1 pages
Proc. SPIE 10249, Integrated Photonics: Materials, Devices, and Applications IV, 1024904 (16 June 2017); doi: 10.1117/12.2267644
Show Author Affiliations
Robert Halir, Univ. de Malaga (Spain)
Juan Manuel Luque-González, Univ. de Malaga (Spain)
Gonzalo Wangüemert-Pérez, Univ. de Malaga (Spain)
Alejandro Ortega-Moñux, Univ. de Malaga (Spain)
Dan-Xia Xu, National Research Council of Canada (Canada)
Jens H. Schmid, National Research Council of Canada (Canada)
Pavel Cheben, National Research Council of Canada (Canada)
Íñigo Molina-Fernández, Univ. de Malaga (Spain)

Published in SPIE Proceedings Vol. 10249:
Integrated Photonics: Materials, Devices, and Applications IV
Jean-Marc Fédéli; Laurent Vivien, Editor(s)

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