Modeling of silica nanowires for optical sensing
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- 1 January 2005
- journal article
- Published by Optica Publishing Group in Optics Express
- Vol. 13 (6) , 2135-2140
- https://doi.org/10.1364/opex.13.002135
Abstract
Based on evanescent-wave guiding properties of nanowire waveguides, we propose to use single-mode subwavelength-diameter silica nanowires for optical sensing. Phase shift of the guided mode caused by index change is obtained by solving Maxwell’s equation, and is used as a criterion for sensitivity estimation. Nanowire sensor employing a wire-assembled Mach-Zehnder structure is modeled. The result shows that optical nanowires, especially those fabricated by taper drawing of optical fibers, are promising for developing miniaturized optical sensors with high sensitivity.Keywords
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