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The effect of periodicity on the defect modes of large mode area microstructured fibers

Flanagan, Joanne C., Amezcua, R., Poletti, F., Hayes, J.R., Broderick, N.G.R. and Richardson, D.J. (2008) The effect of periodicity on the defect modes of large mode area microstructured fibers Optics Express, 16, (23), pp. 18631-18645. (doi:10.1364/OE.16.018631).

Record type: Article


It is well known that periodic variations in refractive index can be used to create guidance in an optical fiber via photonic bandgap effects. It has also been shown that periodic structure in index-guiding microstructured fibers can lead to the guidance of additional leaky higher order modes due to bandgap effects. Here we demonstrate that this additional guidance mechanism can have important practical implications in large mode area silica microstructured fibers. We also demonstrate that similar modes can exist when a bandgap is not present and attribute this guidance to a low density of states. Excellent agreement between theoretical predictions and experimental observations is demonstrated. We explore the impact of these additional modes on the practical operation of these fibers and explore ways of minimizing their effects via the fiber geometry.

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Published date: 10 November 2008


Local EPrints ID: 65535
ISSN: 1094-4087
PURE UUID: 159003cf-ddee-4637-aba7-662f630b4509
ORCID for F. Poletti: ORCID iD

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Date deposited: 18 Feb 2009
Last modified: 19 Jul 2017 00:33

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Author: Joanne C. Flanagan
Author: R. Amezcua
Author: F. Poletti ORCID iD
Author: J.R. Hayes
Author: N.G.R. Broderick
Author: D.J. Richardson

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