Integration of the Phase Shift Method Into Intensity-Modulated Optical Sensors for Extended-Range Distance Measurements in Aircraft Engines

This work presents a dual-mode optical sensing system that integrates the phase shift method (PSM) into an existing intensity-modulated optical fiber displacement sensor to extend the measurement range for blade tip clearance (BTC) applications from 5 to 30 mm. The proposed enhancement requires only...

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Autores: Aldabaldetreku Etxeberria, Gotzon, Durana Apaolaza, Gaizka, Amorebieta Herrero, Josu, Zubia Zaballa, Joseba Andoni, Zubia Garea, Gorka, Novoa Fernández, David
Tipo de recurso: artículo
Fecha de publicación:2026
País:España
Institución:Universidad del País Vasco
Repositorio:Addi. Archivo Digital para la Docencia y la Investigación
OAI Identifier:oai:dnet:addi________::19acf183f531992f1c443e401e8a0a3c
Acceso en línea:http://hdl.handle.net/10810/79188
Access Level:acceso abierto
Palabra clave:aero-engine condition monitoring
blade tip clearance (BTC)
fiber optic-based displacement sensor
phase shift method (PSM)
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spelling Integration of the Phase Shift Method Into Intensity-Modulated Optical Sensors for Extended-Range Distance Measurements in Aircraft EnginesAldabaldetreku Etxeberria, GotzonDurana Apaolaza, GaizkaAmorebieta Herrero, JosuZubia Zaballa, Joseba AndoniZubia Garea, GorkaNovoa Fernández, Davidaero-engine condition monitoringblade tip clearance (BTC)fiber optic-based displacement sensorphase shift method (PSM)This work presents a dual-mode optical sensing system that integrates the phase shift method (PSM) into an existing intensity-modulated optical fiber displacement sensor to extend the measurement range for blade tip clearance (BTC) applications from 5 to 30 mm. The proposed enhancement requires only minimal modifications to the original probe configuration, including high-frequency light modulation at 100 MHz and insertion of a fiber optic coupler. These adjustments enable simultaneous, interference-free operation of the PSM and the intensity modulation technique (IMT) within a single platform for blade-distance detection. The system is designed to accommodate targets with varying reflectivity without recalibration and to automatically reject weak signals, improving reliability and simplifying integration. Dynamic tests validate the concurrent operation and complementary behavior of both methods: the IMT provides high sensitivity at short ranges, whereas the PSM ensures robust performance over extended distances. Experimental results confirm the feasibility of an extended-range, dual-mode optical sensing approach, offering a promising solution for next-generation aero-engine diagnostics where precision, adaptability, and robustness are critical.MICIU/AEI/10.13039/501100011033 (Grant Number: PID2021-123131NA-I00, PID2024-155582OB-C31, PID2024-158310NB-I00 and PDC2025-165025-C21). "ERDF a Way of Making Europe" and "European Union Next GenerationEU/PRTR". Gobierno Vasco/Eusko Jaurlaritza (Grant Number: IT1452-22, IT1829-26, ELKARTEK KK 2025/00058 and ELKARTEK KK-2025/00074). University of the Basque Country UPV/EHU (Grant Translight).IEEE202620262026info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10810/79188reponame:Addi. Archivo Digital para la Docencia y la Investigacióninstname:Universidad del País VascoInglésinfo:eu-repo/grantAgreement/MICINN/PID2021-123131NA-I00/info:eu-repo/grantAgreement/MICIU/PID2024-155582OB-C31/info:eu-repo/grantAgreement/MICIU/PID2024-158310NB-I0/info:eu-repo/grantAgreement/MICIU/PDC2025-165025-C21/https://ieeexplore.ieee.org/document/11420867info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/4.0/© 2026 The Authors. This work is licensed under a Creative Commons Attribution 4.0 Licenseoai:dnet:addi________::19acf183f531992f1c443e401e8a0a3c2026-06-18T09:23:17Z
dc.title.none.fl_str_mv Integration of the Phase Shift Method Into Intensity-Modulated Optical Sensors for Extended-Range Distance Measurements in Aircraft Engines
title Integration of the Phase Shift Method Into Intensity-Modulated Optical Sensors for Extended-Range Distance Measurements in Aircraft Engines
spellingShingle Integration of the Phase Shift Method Into Intensity-Modulated Optical Sensors for Extended-Range Distance Measurements in Aircraft Engines
Aldabaldetreku Etxeberria, Gotzon
aero-engine condition monitoring
blade tip clearance (BTC)
fiber optic-based displacement sensor
phase shift method (PSM)
title_short Integration of the Phase Shift Method Into Intensity-Modulated Optical Sensors for Extended-Range Distance Measurements in Aircraft Engines
title_full Integration of the Phase Shift Method Into Intensity-Modulated Optical Sensors for Extended-Range Distance Measurements in Aircraft Engines
title_fullStr Integration of the Phase Shift Method Into Intensity-Modulated Optical Sensors for Extended-Range Distance Measurements in Aircraft Engines
title_full_unstemmed Integration of the Phase Shift Method Into Intensity-Modulated Optical Sensors for Extended-Range Distance Measurements in Aircraft Engines
title_sort Integration of the Phase Shift Method Into Intensity-Modulated Optical Sensors for Extended-Range Distance Measurements in Aircraft Engines
dc.creator.none.fl_str_mv Aldabaldetreku Etxeberria, Gotzon
Durana Apaolaza, Gaizka
Amorebieta Herrero, Josu
Zubia Zaballa, Joseba Andoni
Zubia Garea, Gorka
Novoa Fernández, David
author Aldabaldetreku Etxeberria, Gotzon
author_facet Aldabaldetreku Etxeberria, Gotzon
Durana Apaolaza, Gaizka
Amorebieta Herrero, Josu
Zubia Zaballa, Joseba Andoni
Zubia Garea, Gorka
Novoa Fernández, David
author_role author
author2 Durana Apaolaza, Gaizka
Amorebieta Herrero, Josu
Zubia Zaballa, Joseba Andoni
Zubia Garea, Gorka
Novoa Fernández, David
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv aero-engine condition monitoring
blade tip clearance (BTC)
fiber optic-based displacement sensor
phase shift method (PSM)
topic aero-engine condition monitoring
blade tip clearance (BTC)
fiber optic-based displacement sensor
phase shift method (PSM)
description This work presents a dual-mode optical sensing system that integrates the phase shift method (PSM) into an existing intensity-modulated optical fiber displacement sensor to extend the measurement range for blade tip clearance (BTC) applications from 5 to 30 mm. The proposed enhancement requires only minimal modifications to the original probe configuration, including high-frequency light modulation at 100 MHz and insertion of a fiber optic coupler. These adjustments enable simultaneous, interference-free operation of the PSM and the intensity modulation technique (IMT) within a single platform for blade-distance detection. The system is designed to accommodate targets with varying reflectivity without recalibration and to automatically reject weak signals, improving reliability and simplifying integration. Dynamic tests validate the concurrent operation and complementary behavior of both methods: the IMT provides high sensitivity at short ranges, whereas the PSM ensures robust performance over extended distances. Experimental results confirm the feasibility of an extended-range, dual-mode optical sensing approach, offering a promising solution for next-generation aero-engine diagnostics where precision, adaptability, and robustness are critical.
publishDate 2026
dc.date.none.fl_str_mv 2026
2026
2026
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10810/79188
url http://hdl.handle.net/10810/79188
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/MICINN/PID2021-123131NA-I00/
info:eu-repo/grantAgreement/MICIU/PID2024-155582OB-C31/
info:eu-repo/grantAgreement/MICIU/PID2024-158310NB-I0/
info:eu-repo/grantAgreement/MICIU/PDC2025-165025-C21/
https://ieeexplore.ieee.org/document/11420867
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/4.0/
© 2026 The Authors. This work is licensed under a Creative Commons Attribution 4.0 License
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/4.0/
© 2026 The Authors. This work is licensed under a Creative Commons Attribution 4.0 License
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv IEEE
publisher.none.fl_str_mv IEEE
dc.source.none.fl_str_mv reponame:Addi. Archivo Digital para la Docencia y la Investigación
instname:Universidad del País Vasco
instname_str Universidad del País Vasco
reponame_str Addi. Archivo Digital para la Docencia y la Investigación
collection Addi. Archivo Digital para la Docencia y la Investigación
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.81155

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