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How to make the propagation time through an optical fiber fully insensitive to temperature variations

How to make the propagation time through an optical fiber fully insensitive to temperature variations
How to make the propagation time through an optical fiber fully insensitive to temperature variations
Propagation time through standard (solid core) optical fibers changes with the temperature at a rate of 40 ps/km/K. The thermo-optic effect in silica glass accounts for about 95% of this change, and thus, hollow-core fibers, in which the majority of optical power propagates through an air rather than a glass core, can have this sensitivity greatly reduced. To date, we have demonstrated a sensitivity as low as 2 ps/km/K, this value being limited by thermally induced fiber elongation. In this paper, we predict and experimentally demonstrate that the thermal sensitivity of the propagation time can be reduced to zero (or even made negative) in hollow-core photonic bandgap fibers by compensating the thermally induced fiber elongation with an equal and opposite thermally induced group velocity change (i.e., by making the light travel faster through the elongated fiber). This represents the ultimate fiber solution for many propagation time-sensitive applications.
659-668
Numkam Fokoua, Eric
6d9f7e50-dc3b-440a-a0b9-f4a08dd02ccd
Petrovich, Marco
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Bradley, Tom
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Poletti, Francesco
9adcef99-5558-4644-96d7-ce24b5897491
Richardson, David
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Slavík, Radan
2591726a-ecc0-4d1a-8e1d-4d0fd8da8f7d
Numkam Fokoua, Eric
6d9f7e50-dc3b-440a-a0b9-f4a08dd02ccd
Petrovich, Marco
bfe895a0-da85-4a40-870a-2c7bfc84a4cf
Bradley, Tom
d4cce4f3-bb69-4e14-baee-cd6a88e38101
Poletti, Francesco
9adcef99-5558-4644-96d7-ce24b5897491
Richardson, David
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Slavík, Radan
2591726a-ecc0-4d1a-8e1d-4d0fd8da8f7d

Numkam Fokoua, Eric, Petrovich, Marco, Bradley, Tom, Poletti, Francesco, Richardson, David and Slavík, Radan (2017) How to make the propagation time through an optical fiber fully insensitive to temperature variations. Optica, 4 (6), 659-668. (doi:10.1364/OPTICA.4.000659).

Record type: Article

Abstract

Propagation time through standard (solid core) optical fibers changes with the temperature at a rate of 40 ps/km/K. The thermo-optic effect in silica glass accounts for about 95% of this change, and thus, hollow-core fibers, in which the majority of optical power propagates through an air rather than a glass core, can have this sensitivity greatly reduced. To date, we have demonstrated a sensitivity as low as 2 ps/km/K, this value being limited by thermally induced fiber elongation. In this paper, we predict and experimentally demonstrate that the thermal sensitivity of the propagation time can be reduced to zero (or even made negative) in hollow-core photonic bandgap fibers by compensating the thermally induced fiber elongation with an equal and opposite thermally induced group velocity change (i.e., by making the light travel faster through the elongated fiber). This represents the ultimate fiber solution for many propagation time-sensitive applications.

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Optica_285481 - Accepted Manuscript
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More information

Accepted/In Press date: 26 April 2017
e-pub ahead of print date: 13 June 2017
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 411731
URI: https://eprints.soton.ac.uk/id/eprint/411731
PURE UUID: c7a4592d-7de5-439f-8d8d-51bc613bb4a7
ORCID for Eric Numkam Fokoua: ORCID iD orcid.org/0000-0003-0873-911X
ORCID for Marco Petrovich: ORCID iD orcid.org/0000-0002-3905-5901
ORCID for Tom Bradley: ORCID iD orcid.org/0000-0001-6568-5811
ORCID for Francesco Poletti: ORCID iD orcid.org/0000-0002-1000-3083
ORCID for David Richardson: ORCID iD orcid.org/0000-0002-7751-1058
ORCID for Radan Slavík: ORCID iD orcid.org/0000-0002-9336-4262

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Date deposited: 22 Jun 2017 16:32
Last modified: 10 Dec 2019 06:03

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