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Impact of structural distortions on the performance of hollow-core photonic bandgap fibers

Impact of structural distortions on the performance of hollow-core photonic bandgap fibers
Impact of structural distortions on the performance of hollow-core photonic bandgap fibers
We present a generic model for studying numerically the performance of hollow-core photonic bandgap fibers (HC-PBGFs) with arbitrary cross-sectional distortions. Fully vectorial finite element simulations reveal that distortions beyond the second ring of air holes have an impact on the leakage loss and bandwidth of the fiber, but do not significantly alter its surface scattering loss which remains the dominant contribution to the overall fiber loss (providing that a sufficient number of rings of air holes (> or = 5) are used). We have found that while most types of distortions in the first two rings are generally detrimental, enlarging the core defect while keeping equidistant and on a circular boundary the glass nodes surrounding the core may produce losses half those compared to "idealized" fiber designs and with no penalty in terms of the transmission bandwidth.
1094-4087
2735-2744
Numkam Fokoua, Eric
6d9f7e50-dc3b-440a-a0b9-f4a08dd02ccd
Richardson, David J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Poletti, Francesco
9adcef99-5558-4644-96d7-ce24b5897491
Numkam Fokoua, Eric
6d9f7e50-dc3b-440a-a0b9-f4a08dd02ccd
Richardson, David J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Poletti, Francesco
9adcef99-5558-4644-96d7-ce24b5897491

Numkam Fokoua, Eric, Richardson, David J. and Poletti, Francesco (2014) Impact of structural distortions on the performance of hollow-core photonic bandgap fibers. Optics Express, 22 (3), 2735-2744. (doi:10.1364/OE.22.002735).

Record type: Article

Abstract

We present a generic model for studying numerically the performance of hollow-core photonic bandgap fibers (HC-PBGFs) with arbitrary cross-sectional distortions. Fully vectorial finite element simulations reveal that distortions beyond the second ring of air holes have an impact on the leakage loss and bandwidth of the fiber, but do not significantly alter its surface scattering loss which remains the dominant contribution to the overall fiber loss (providing that a sufficient number of rings of air holes (> or = 5) are used). We have found that while most types of distortions in the first two rings are generally detrimental, enlarging the core defect while keeping equidistant and on a circular boundary the glass nodes surrounding the core may produce losses half those compared to "idealized" fiber designs and with no penalty in terms of the transmission bandwidth.

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Accepted/In Press date: 14 January 2014
e-pub ahead of print date: 30 January 2014
Published date: 10 February 2014
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 361808
URI: http://eprints.soton.ac.uk/id/eprint/361808
ISSN: 1094-4087
PURE UUID: 6f70bc31-b1c2-46ef-ae0e-09dc8da58309
ORCID for Eric Numkam Fokoua: ORCID iD orcid.org/0000-0003-0873-911X
ORCID for David J. Richardson: ORCID iD orcid.org/0000-0002-7751-1058
ORCID for Francesco Poletti: ORCID iD orcid.org/0000-0002-1000-3083

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Date deposited: 04 Feb 2014 11:55
Last modified: 18 Feb 2021 17:21

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