The thermal phase sensitivity of both coated and uncoated standard and hollow core fibers down to cryogenic temperatures
The thermal phase sensitivity of both coated and uncoated standard and hollow core fibers down to cryogenic temperatures
The thermal phase sensitivity of an optical fiber quantifies the degree to which a change in ambient temperature modifies the accumulated phase of light propagating through it. This sensitivity is often the limiting factor to the performance of fiber-based interferometers. Here we compare the thermal phase sensitivity of hollow core fiber (HCF) and standard single mode fiber (SMF-28) from -180°C up to room temperature. We report measurements on fibers both with and without acrylate coating that enable an accurate estimation of the coating contribution.
The thermal phase sensitivity of fibers without any coating decreases at low temperatures. For SMF-28 it is reduced by a factor of four at -190°C as compared to room temperature. For HCF, the thermal phase sensitivity becomes negative at low temperatures, crossing zero around -70°C, making the HCF operated at that temperature fully insensitive to small temperature fluctuations.
The coating significantly influences a fiber's overall thermal phase sensitivity, especially at low temperatures, since it goes through a phase transition from a rubbery state at room temperature to stiff glassy state at low temperatures. We quantify the coating contribution and suggest fiber coating design rules to obtain fibers with reduced or even zero thermal phase sensitivity.
Hollow core fiber, optical fiber interference, optical fibers, thermal sensitivities
2477-2484
Zhu, Wenwu
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Numkam Fokoua, Eric Rodrigue
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Taranta, Austin
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Chen, Yong
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Bradley, Thomas
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Petrovich, Marco
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Poletti, Francesco
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Zhao, Mingshan
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Richardson, David
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Slavík, Radan
2591726a-ecc0-4d1a-8e1d-4d0fd8da8f7d
15 April 2020
Zhu, Wenwu
224a96dc-9793-43c5-a43d-78630e179de8
Numkam Fokoua, Eric Rodrigue
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Taranta, Austin
bc2e834f-0d85-44a1-a874-8150df1f73d9
Chen, Yong
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Bradley, Thomas
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Petrovich, Marco
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Poletti, Francesco
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Zhao, Mingshan
bf289b4a-245b-467f-a926-dab8ffe2054c
Richardson, David
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Slavík, Radan
2591726a-ecc0-4d1a-8e1d-4d0fd8da8f7d
Zhu, Wenwu, Numkam Fokoua, Eric Rodrigue, Taranta, Austin, Chen, Yong, Bradley, Thomas, Petrovich, Marco, Poletti, Francesco, Zhao, Mingshan, Richardson, David and Slavík, Radan
(2020)
The thermal phase sensitivity of both coated and uncoated standard and hollow core fibers down to cryogenic temperatures.
IEEE Journal of Lightwave Technology, 38 (8), , [8935444].
(doi:10.1109/JLT.2019.2960437).
Abstract
The thermal phase sensitivity of an optical fiber quantifies the degree to which a change in ambient temperature modifies the accumulated phase of light propagating through it. This sensitivity is often the limiting factor to the performance of fiber-based interferometers. Here we compare the thermal phase sensitivity of hollow core fiber (HCF) and standard single mode fiber (SMF-28) from -180°C up to room temperature. We report measurements on fibers both with and without acrylate coating that enable an accurate estimation of the coating contribution.
The thermal phase sensitivity of fibers without any coating decreases at low temperatures. For SMF-28 it is reduced by a factor of four at -190°C as compared to room temperature. For HCF, the thermal phase sensitivity becomes negative at low temperatures, crossing zero around -70°C, making the HCF operated at that temperature fully insensitive to small temperature fluctuations.
The coating significantly influences a fiber's overall thermal phase sensitivity, especially at low temperatures, since it goes through a phase transition from a rubbery state at room temperature to stiff glassy state at low temperatures. We quantify the coating contribution and suggest fiber coating design rules to obtain fibers with reduced or even zero thermal phase sensitivity.
Text
Wenwu_CryoSensitivity_JLT2019_Review_Final_clean
- Accepted Manuscript
More information
Accepted/In Press date: 11 December 2019
e-pub ahead of print date: 17 December 2019
Published date: 15 April 2020
Keywords:
Hollow core fiber, optical fiber interference, optical fibers, thermal sensitivities
Identifiers
Local EPrints ID: 436692
URI: http://eprints.soton.ac.uk/id/eprint/436692
ISSN: 0733-8724
PURE UUID: 9aca9597-0a5e-4576-8e41-7cb6f4d451b4
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Date deposited: 20 Dec 2019 18:31
Last modified: 28 Apr 2022 02:14
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Contributors
Author:
Wenwu Zhu
Author:
Eric Rodrigue Numkam Fokoua
Author:
Thomas Bradley
Author:
Mingshan Zhao
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