Noise analysis of coherent and non-coherent detection in Φ-OTDR systems with chirped pulses

4 pags., 3 figs, 1 tab.-- European Workshop on Optical Fibre Sensors (EWOFS 2023)

Detalles Bibliográficos
Autores: Vidal-Moreno, Pedro J., Becerril, Carlos, Fernández-Ruiz, María R., Martins, Hugo F., Martín-López, Sonia, González-Herráez, Miguel
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2023
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/355985
Acceso en línea:http://hdl.handle.net/10261/355985
https://api.elsevier.com/content/abstract/scopus_id/85162939979
Access Level:acceso abierto
Palabra clave:Coherent Detection
DAS
Fiber Optics Sensors
Optical Filter
Rayleigh Scattering
SNR
ΦOTDR
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dc.title.none.fl_str_mv Noise analysis of coherent and non-coherent detection in Φ-OTDR systems with chirped pulses
title Noise analysis of coherent and non-coherent detection in Φ-OTDR systems with chirped pulses
spellingShingle Noise analysis of coherent and non-coherent detection in Φ-OTDR systems with chirped pulses
Vidal-Moreno, Pedro J.
Coherent Detection
DAS
Fiber Optics Sensors
Optical Filter
Rayleigh Scattering
SNR
ΦOTDR
title_short Noise analysis of coherent and non-coherent detection in Φ-OTDR systems with chirped pulses
title_full Noise analysis of coherent and non-coherent detection in Φ-OTDR systems with chirped pulses
title_fullStr Noise analysis of coherent and non-coherent detection in Φ-OTDR systems with chirped pulses
title_full_unstemmed Noise analysis of coherent and non-coherent detection in Φ-OTDR systems with chirped pulses
title_sort Noise analysis of coherent and non-coherent detection in Φ-OTDR systems with chirped pulses
dc.creator.none.fl_str_mv Vidal-Moreno, Pedro J.
Becerril, Carlos
Fernández-Ruiz, María R.
Martins, Hugo F.
Martín-López, Sonia
González-Herráez, Miguel
author Vidal-Moreno, Pedro J.
author_facet Vidal-Moreno, Pedro J.
Becerril, Carlos
Fernández-Ruiz, María R.
Martins, Hugo F.
Martín-López, Sonia
González-Herráez, Miguel
author_role author
author2 Becerril, Carlos
Fernández-Ruiz, María R.
Martins, Hugo F.
Martín-López, Sonia
González-Herráez, Miguel
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Universidad de Alcalá
Ministerio de Ciencia e Innovación (España)
Comunidad de Madrid
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Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Coherent Detection
DAS
Fiber Optics Sensors
Optical Filter
Rayleigh Scattering
SNR
ΦOTDR
topic Coherent Detection
DAS
Fiber Optics Sensors
Optical Filter
Rayleigh Scattering
SNR
ΦOTDR
description 4 pags., 3 figs, 1 tab.-- European Workshop on Optical Fibre Sensors (EWOFS 2023)
publishDate 2023
dc.date.none.fl_str_mv 2023
2024
2024
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Proceedings of SPIE - The International Society for Optical Engineering
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spelling Noise analysis of coherent and non-coherent detection in Φ-OTDR systems with chirped pulsesVidal-Moreno, Pedro J.Becerril, CarlosFernández-Ruiz, María R.Martins, Hugo F.Martín-López, SoniaGonzález-Herráez, MiguelCoherent DetectionDASFiber Optics SensorsOptical FilterRayleigh ScatteringSNRΦOTDR4 pags., 3 figs, 1 tab.-- European Workshop on Optical Fibre Sensors (EWOFS 2023)Chirped-pulse phase sensitive (CP-Φ) OTDR is a distributed sensing technology that allows for quantitative measurement of strain and temperature along an optical fiber by simply direct detection of the Rayleigh backscattering. Typically, chirped pulses have a linear frequency modulation covering few GHz. Backscattered traces must be amplified before detection, which introduces noise and limits the signal-to-noise ratio (SNR) and, therefore, the maximum measurable range. To increase the SNR, an optical filter is usually placed before photodetection aimed at reducing broadband optical noise caused by amplified spontaneous emission. However, narrow-band filters (e.g., 10 GHz bandwidth) are not easily compatible with multi-wavelength approaches, used to improve the long-term stability. Furthermore, in practice it is not straightforward to find narrowband optical filters that continuously match the central frequency of the laser, considering laser wavelength drifts. In this study, the influence of the optical filter bandwidth on the range in CP-ΦOTDR is theoretically investigated for two types of photodetection: direct and coherent. The results show that when using coherent detection, the SNR does not depend on the filter bandwidth. Therefore, it is possible to achieve an equivalent measurement range by using a wide optical filter (e.g., 100 GHz) as compared to that obtained when using direct detection with a narrowband filter. This finding suggests that coherent detection can be used to increase the range in CP-ΦOTDR and could be compatible with the use of multi-wavelength techniques to improve the long-term stability for applications such as civil engineering and seismology.P.J.V-M was supported by FPI-2021 Grant from the University of Alcalá Research Program. The work of M.R.F-R. and H.M was supported by MCIN/AEI/10.13039/501100011033 and Unión Europea extGenerationEU»/PRT under grants RYC2021-032167-I and RYC2021-035009-I. This work was supported in part by Comunidad de Madrid and FEDER Program (grant SINFOTON2-CM: S2018/NMT-4326), in part by the Spanish MCIN/AEI/10.13039/501100011033 and the European Union NextGenerationEU/PRTR Program under Grant PSI ref. PLEC2021-007875 and TREMORS ref. CPP2021-008869, in part by the Spanish MCIN/AEI/10.13039/501100011033, and FEDER Una manera de hacer Europa (grants , PID2021-128000OB-C21 and PID2021-128000OB-C22) and in part by the European Innovation Council under Grant SAFE: ref. 101098992.Peer reviewedSPIE digital libraryUniversidad de AlcaláMinisterio de Ciencia e Innovación (España)Comunidad de Madrid#NODATA##NODATA##NODATA##NODATA##NODATA##NODATA#Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202420242023info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/355985https://api.elsevier.com/content/abstract/scopus_id/85162939979reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#S2018/NMT-4326/SINFOTON2-CMinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PLEC2021-007875info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-128000OB-C21info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-128000OB-C22info:eu-repo/grantAgreement/EC/HE/101098992info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/RYC2021-032167-Iinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/RYC2021-035009-Iinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/CPP2021-008869Proceedings of SPIE - The International Society for Optical EngineeringSíinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3559852026-05-22T06:33:51Z
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