A high spatial resolution distributed acoustic sensor based on ultra low-loss enhanced backscattering fiber
A high spatial resolution distributed acoustic sensor based on ultra low-loss enhanced backscattering fiber
In this work, a distributed acoustic sensor (DAS) with 10-cm spatial resolution is demonstrated. Such a high resolution is achieved by employing an ultra low-loss enhanced backscattering (ULEB) fiber as a sensing element. A conventional DAS system is modified to interrogate the ULEB fiber comprised of 50 discrete reflectors with an average reflectance of −56 dB. The ULEB fiber was fabricated with an automated reel-to-reel inscription machine, modified to create more uniform reflectors with similar reflectivity in the core of the fiber. The sensing arrangement exhibits a phase noise of 1.9𝑛𝜀/√𝐻𝑧over 1 km sensing range.
DAS, DVS, distributed acoustic sensing, Distributed vibration sensing, high resolution, high spatial resolution, enhanced backscattering fibers, ULEB fiber, DOFS, distributed optical fibre sensors
2002-2010
Masoudi, Ali
8073fb9b-2e6c-46c9-89cf-cb8670d76dc0
Lee, Timothy
beb3b88e-3e5a-4c3f-8636-bb6de8040fcc
Beresna, Martynas
a6dc062e-93c6-46a5-aeb3-8de332cdec7b
Brambilla, Gilberto
815d9712-62c7-47d1-8860-9451a363a6c8
15 September 2022
Masoudi, Ali
8073fb9b-2e6c-46c9-89cf-cb8670d76dc0
Lee, Timothy
beb3b88e-3e5a-4c3f-8636-bb6de8040fcc
Beresna, Martynas
a6dc062e-93c6-46a5-aeb3-8de332cdec7b
Brambilla, Gilberto
815d9712-62c7-47d1-8860-9451a363a6c8
Masoudi, Ali, Lee, Timothy, Beresna, Martynas and Brambilla, Gilberto
(2022)
A high spatial resolution distributed acoustic sensor based on ultra low-loss enhanced backscattering fiber.
Optics Continuum, 1 (9), .
(doi:10.1364/OPTCON.468673).
Abstract
In this work, a distributed acoustic sensor (DAS) with 10-cm spatial resolution is demonstrated. Such a high resolution is achieved by employing an ultra low-loss enhanced backscattering (ULEB) fiber as a sensing element. A conventional DAS system is modified to interrogate the ULEB fiber comprised of 50 discrete reflectors with an average reflectance of −56 dB. The ULEB fiber was fabricated with an automated reel-to-reel inscription machine, modified to create more uniform reflectors with similar reflectivity in the core of the fiber. The sensing arrangement exhibits a phase noise of 1.9𝑛𝜀/√𝐻𝑧over 1 km sensing range.
Text
High_Res_DAS___Optics_Continuum
- Accepted Manuscript
Text
optcon-1-9-2002
- Version of Record
More information
Submitted date: 22 June 2022
Accepted/In Press date: 24 July 2022
Published date: 15 September 2022
Keywords:
DAS, DVS, distributed acoustic sensing, Distributed vibration sensing, high resolution, high spatial resolution, enhanced backscattering fibers, ULEB fiber, DOFS, distributed optical fibre sensors
Identifiers
Local EPrints ID: 482752
URI: http://eprints.soton.ac.uk/id/eprint/482752
ISSN: 2770-0208
PURE UUID: 2dc7377a-7caf-40ef-823a-6ec8629bb6a1
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Date deposited: 12 Oct 2023 16:40
Last modified: 17 Mar 2024 03:25
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