Journal article
Evanescent field waveguide sensing with subwavelength grating structures in silicon-on-insulator.
Abstract
We explore, to the best of our knowledge, the potential of diffractionless subwavelength grating waveguides for sensing applications. We show that by subwavelength patterning of silicon-wire waveguides the field delocalization can be engineered to increase the sensitivity. Fully vectorial 3D-FDTD simulations confirm the sensitivity enhancement, achieving sensitivities of 0.83 RIU/RIU and 1.5·10(-3) RIU/nm for bulk and surface sensing, …
Authors
Gonzalo Wangüemert-Pérez J; Cheben P; Ortega-Moñux A; Alonso-Ramos C; Pérez-Galacho D; Halir R; Molina-Fernández I; Xu D-X; Schmid JH
Journal
Optics Letters, Vol. 39, No. 15, pp. 4442–4445
Publisher
Optica Publishing Group
Publication Date
August 1, 2014
DOI
10.1364/ol.39.004442
ISSN
0146-9592