Bragg waveguides with low-index liquid cores
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Fink_Bragg_waveguides.pdf
Size
1.33 MB
Format
Adobe PDF
Checksum (MD5)
308f1955f21f5c27da3fd7993a5969d7
Author(s)
Rowland, Kristopher J.
Afshar, Shahraam
Fink, Yoel
Monro, Tanya M.
Stolyarov, Alexander Mark
Date Issued
December 2011
Journal
Optics Express
Publisher
Optical Society of America
Citation
Rowland, Kristopher J., Shahraam Afshar, Alexander Stolyarov, Yoel Fink, and Tanya M. Monro. “Bragg waveguides with low-index liquid cores.” Optics Express 20, no. 1 (December 19, 2012): 48. © 2011 OSA
Version
Final published version
Abstract
The spectral properties of light confined to low-index media by binary layered structures is discussed. A novel phase-based model with a simple analytical form is derived for the approximation of the center of arbitrary bandgaps of binary layered structures operating at arbitrary effective indices. An analytical approximation to the sensitivity of the bandgap center to changes in the core refractive index is thus derived. Experimentally, significant shifting of the fundamental bandgap of a hollow-core Bragg fiber with a large cladding layer refractive index contrast is demonstrated by filling the core with liquids of various refractive indices. Confirmation of these results against theory is shown, including the new analytical model, highlighting the importance of considering material dispersion. The work demonstrates the broad and sensitive tunability of Bragg structures and includes discussions on refractive index sensing.
MIT Department
Massachusetts Institute of Technology. Research Laboratory of Electronics
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1364/OE.20.000048
