Bragg waveguides with low-index liquid cores
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(Published version)
Date
2012
Authors
Rowland, K.
Afshar Vahid, S.
Stolyarov, A.
Fink, Y.
Monro, T.
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Advisors
Journal Title
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Volume Title
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Journal article
Citation
Optics Express, 2012; 20(1):48-62
Statement of Responsibility
Kristopher J. Rowland, Shahraam Afshar V., Alexander Stolyarov, Yoel Fink, and Tanya M. Monro
Conference Name
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
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Link to a related website: https://digital.library.adelaide.edu.au/dspace/bitstream/2440/68915/1/hdl_68915.pdf, Open Access via Unpaywall
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© 2012 Optical Society of America