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Distributed detection of quadratic Kerr effect in silica fibers using chirped-pulse φoTDR
University of Porto, Portugal.
RISE - Research Institutes of Sweden, ICT, Acreo. KTH Royal Institute of Technology, Sweden.
University of Alcalá, Spain.
RISE - Research Institutes of Sweden, ICT, Acreo.ORCID iD: 0000-0001-8058-2140
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2019 (English)In: Proceedings of SPIE - The International Society for Optical Engineering, SPIE , 2019Conference paper, Published paper (Refereed)
Abstract [en]

Monitoring the presence of external electric fields over large distances and detecting losses along power transmission networks, is of extreme importance nowadays due to concerns with environment, efficiency, cost and safety. In this work, we evaluate a method to achieve distributed measurements of the quadratic electro-optic Kerr effect in silica fibers in a distributed way. For this purpose, we integrate a twin-hole fiber filled with BiSn alloy electrodes and monitor its electric-field induced refractive index (RI) change Δn by using a chirped-pulse phase-sensitive OTDR (CP-ΦOTDR). By exploiting its high sensitivity (RI changes of the order of 10-9), we demonstrate that the proposed system is able to detect the intrinsic quadratic electrooptic nonlinearity (the electric Kerr effect) in the fiber, an effect that is usually considered to be too weak to be exploited for practical applications. Additionally, we show that the CP-ΦOTDR is sufficiently sensitive to measure the electric Kerr effect with untreated standard telecommunication fibers under realistic fields.

Place, publisher, year, edition, pages
SPIE , 2019.
Keywords [en]
Distributed sensing, Kerr effect, Optical sensors, optical time domain reflectometry, Rayleigh scattering, Binary alloys, Bismuth alloys, Chirp modulation, Electric fields, Electric losses, Electric power transmission networks, Optical fibers, Refractive index, Silica, Tin alloys, Distributed detection, Distributed measurements, Electric field induced, Electrooptic nonlinearities, External electric field, Telecommunication fibers, Optical Kerr effect
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-40635DOI: 10.1117/12.2540755Scopus ID: 2-s2.0-85073362612ISBN: 9781510631236 (print)OAI: oai:DiVA.org:ri-40635DiVA, id: diva2:1372892
Conference
7th European Workshop on Optical Fibre Sensors, EWOFS 2019, 1 October 2019 through 4 October 2019
Note

Funding details: Ministerio de Ciencia, Innovación y Universidades; Funding details: European Commission, EC, MSCA-ITN-ETN-722509; Funding details: Horizon 2020, 2020; Funding details: RTI2018-097957-B-C31; Funding details: Comunidad de Madrid; Funding details: Ministerio de Economía y Competitividad, MINECO, TEC2015-71127-C2-2-R; Funding text 1: This work was supported in part by: the European Commission through project MSCA-ITN-ETN-722509; the DOMINO Water JPI project, under the WaterWorks2014 cofounded call by EC Horizon 2020 and Spanish MINECO; the Spanish MINECO through project TEC2015-71127-C2-2-R; Comunidad de Madrid and FEDER Program under grant SINFOTON2-CM: P2018/NMT-4326; the Spanish Government under projects TEC2015-71127-C2-2-R and RTI2018-097957-B-C31. H.F.M. acknowledges financial support from the Spanish Ministerio de Ciencia, Innovación y Universidades (CIENCIA) under contract no. IJCI-2017-33856.

Available from: 2019-11-25 Created: 2019-11-25 Last updated: 2019-11-25Bibliographically approved

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