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Type: Journal article
Title: Bragg waveguides with low-index liquid cores
Author: Rowland, K.
Afshar Vahid, S.
Stolyarov, A.
Fink, Y.
Monro, T.
Citation: Optics Express, 2012; 20(1):48-62
Publisher: Optical Soc Amer
Issue Date: 2012
ISSN: 1094-4087
Statement of
Kristopher J. Rowland, Shahraam Afshar V., Alexander Stolyarov, Yoel Fink, and Tanya M. Monro
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.
Keywords: Solutions
Scattering, Radiation
Models, Chemical
Computer Simulation
Rights: © 2012 Optical Society of America
DOI: 10.1364/OE.20.000048
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