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

The effect of periodicity on the defect modes of large mode area microstructured fibers
The effect of periodicity on the defect modes of large mode area microstructured fibers
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.
1094-4087
18631-18645
Flanagan, Joanne C.
532a7428-0914-4354-9e63-471471d57126
Amezcua, R.
aac86a45-14eb-4c35-a064-0bfc4cf3aca9
Poletti, F.
9adcef99-5558-4644-96d7-ce24b5897491
Hayes, J.R.
a6d3acd6-d7d5-4614-970e-0e8c594e48e2
Broderick, N.G.R.
4cfa2c7c-097a-48d6-b221-4e92ad1c6aea
Richardson, D.J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Flanagan, Joanne C.
532a7428-0914-4354-9e63-471471d57126
Amezcua, R.
aac86a45-14eb-4c35-a064-0bfc4cf3aca9
Poletti, F.
9adcef99-5558-4644-96d7-ce24b5897491
Hayes, J.R.
a6d3acd6-d7d5-4614-970e-0e8c594e48e2
Broderick, N.G.R.
4cfa2c7c-097a-48d6-b221-4e92ad1c6aea
Richardson, D.J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3

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), 18631-18645. (doi:10.1364/OE.16.018631).

Record type: Article

Abstract

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

Identifiers

Local EPrints ID: 65535
URI: https://eprints.soton.ac.uk/id/eprint/65535
ISSN: 1094-4087
PURE UUID: 159003cf-ddee-4637-aba7-662f630b4509
ORCID for F. Poletti: ORCID iD orcid.org/0000-0002-1000-3083
ORCID for D.J. Richardson: ORCID iD orcid.org/0000-0002-7751-1058

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Date deposited: 18 Feb 2009
Last modified: 20 Jul 2019 01:24

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Contributors

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 ORCID iD

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