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Backscattering in antiresonant hollow-core fibers: over 40 dB lower than in standard optical fibers

Backscattering in antiresonant hollow-core fibers: over 40 dB lower than in standard optical fibers
Backscattering in antiresonant hollow-core fibers: over 40 dB lower than in standard optical fibers
The elastic backscattering of light in optical fiber is a fundamental phenomenon which sets the ultimate performance of several fiber systems such as gyroscopes and bidirectional transfer links. Until now, efforts to reduce the backscattering coefficient have yielded limited results, with the lowest value sitting at around −76 dB/m in Ge-free silica core fiber at 1.55 µm. Here, we present what we believe to be the first measurement of backscattering from a low-loss antiresonant hollow-core fiber and show that it is more than 40 dB below reported values in silica-core fiber and hollow-core photonic bandgap fiber. The record-low level of −118 dB/m measured with our custom-built optical frequency-domain reflectometer is in good agreement with simulations in which we assume the scattering to originate from the intrinsic surface roughness. Our demonstration also shows that a tailored instrument can localize and quantify weak faults within a hollow-core fiber, enabling its detailed characterization.
2334-2536
216-219
Michaud-Belleau, Vincent
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Numkam Fokoua, Eric Rodrigue
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Bradley, Thomas
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Hayes, John Richard
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Chen, Yong
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Poletti, Francesco
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Richardson, David J.
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Genest, Jérôme
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Slavík, Radan
2591726a-ecc0-4d1a-8e1d-4d0fd8da8f7d
Michaud-Belleau, Vincent
5e8f2c22-15f1-407f-81aa-bafd5bb23edd
Numkam Fokoua, Eric Rodrigue
cca13dcd-4443-4638-b9b4-d2dcb1dd100a
Bradley, Thomas
d4cce4f3-bb69-4e14-baee-cd6a88e38101
Hayes, John Richard
a6d3acd6-d7d5-4614-970e-0e8c594e48e2
Chen, Yong
0bfb3083-4cd2-4463-a7a4-f48c4158b15a
Poletti, Francesco
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Richardson, David J.
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Genest, Jérôme
4eddff9c-a4db-49f4-99a8-1e2cba7c9e88
Slavík, Radan
2591726a-ecc0-4d1a-8e1d-4d0fd8da8f7d

Michaud-Belleau, Vincent, Numkam Fokoua, Eric Rodrigue, Bradley, Thomas, Hayes, John Richard, Chen, Yong, Poletti, Francesco, Richardson, David J., Genest, Jérôme and Slavík, Radan (2021) Backscattering in antiresonant hollow-core fibers: over 40 dB lower than in standard optical fibers. Optica, 8 (2), 216-219. (doi:10.1364/OPTICA.403087).

Record type: Article

Abstract

The elastic backscattering of light in optical fiber is a fundamental phenomenon which sets the ultimate performance of several fiber systems such as gyroscopes and bidirectional transfer links. Until now, efforts to reduce the backscattering coefficient have yielded limited results, with the lowest value sitting at around −76 dB/m in Ge-free silica core fiber at 1.55 µm. Here, we present what we believe to be the first measurement of backscattering from a low-loss antiresonant hollow-core fiber and show that it is more than 40 dB below reported values in silica-core fiber and hollow-core photonic bandgap fiber. The record-low level of −118 dB/m measured with our custom-built optical frequency-domain reflectometer is in good agreement with simulations in which we assume the scattering to originate from the intrinsic surface roughness. Our demonstration also shows that a tailored instrument can localize and quantify weak faults within a hollow-core fiber, enabling its detailed characterization.

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Accepted/In Press date: 1 January 2021
e-pub ahead of print date: 10 February 2021
Published date: 10 February 2021

Identifiers

Local EPrints ID: 445714
URI: http://eprints.soton.ac.uk/id/eprint/445714
ISSN: 2334-2536
PURE UUID: d8d17374-c824-4785-b0de-ea5d07871026
ORCID for Thomas Bradley: ORCID iD orcid.org/0000-0001-6568-5811
ORCID for Yong Chen: ORCID iD orcid.org/0000-0003-0383-6113
ORCID for Francesco Poletti: ORCID iD orcid.org/0000-0002-1000-3083
ORCID for David J. Richardson: ORCID iD orcid.org/0000-0002-7751-1058
ORCID for Radan Slavík: ORCID iD orcid.org/0000-0002-9336-4262

Catalogue record

Date deposited: 06 Jan 2021 17:41
Last modified: 22 Oct 2021 04:01

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