High-Performance Optical Fiber Displacement Sensor with Extended Linear Range and Sensitivity
Optical Fiber Displacement Sensors (OFDSs) provide several advantages over conventional sensors, including their compact size, flexibility, and immunity to electromagnetic interference. These features make OFDSs ideal for use in confined spaces, such as turbines, where direct laser access is impossi...
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MDPI AG
2025-01-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/25/2/418 |
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| author | Gorka Zubia Joseba Zubia Josu Amorebieta Gotzon Aldabaldetreku Asier Zubia Gaizka Durana |
| author_facet | Gorka Zubia Joseba Zubia Josu Amorebieta Gotzon Aldabaldetreku Asier Zubia Gaizka Durana |
| author_sort | Gorka Zubia |
| collection | DOAJ |
| description | Optical Fiber Displacement Sensors (OFDSs) provide several advantages over conventional sensors, including their compact size, flexibility, and immunity to electromagnetic interference. These features make OFDSs ideal for use in confined spaces, such as turbines, where direct laser access is impossible. A critical aspect of OFDS performance is the geometry of the fiber bundle, which influences key parameters such as sensitivity, range, and dead zones. In this work, we present a streamlined design methodology for azimuthally symmetric OFDSs to improve the linear range of these sensors. The most effective configuration we propose is the pentafurcated bundle, which consists of a central transmitting fiber surrounded by four concentric rings of fibers with different radii. Our experimental results show that the pentafurcated designs increase both the range—up to 10.5 mm—and the sensitivity of the sensor—<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>2</mn><msup><mi>mm</mi><mrow><mo>−</mo><mn>1</mn></mrow></msup></mrow></semantics></math></inline-formula>—while minimizing the dead zone of the sensor (2.5 mm), allowing accurate measurements even at very short distances |
| format | Article |
| id | doaj-art-312dc9e98f6047b8bfeb319f2b78281e |
| institution | Kabale University |
| issn | 1424-8220 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj-art-312dc9e98f6047b8bfeb319f2b78281e2025-01-24T13:48:51ZengMDPI AGSensors1424-82202025-01-0125241810.3390/s25020418High-Performance Optical Fiber Displacement Sensor with Extended Linear Range and SensitivityGorka Zubia0Joseba Zubia1Josu Amorebieta2Gotzon Aldabaldetreku3Asier Zubia4Gaizka Durana5Department of Graphical Expression and Project Engineering, University of the Basque Country, 48013 Bilbao, SpainDepartment of Communications Engineering, University of the Basque Country, 48013 Bilbao, SpainDepartment of Applied Mathematics, University of the Basque Country, 48013 Bilbao, SpainDepartment of Communications Engineering, University of the Basque Country, 48013 Bilbao, SpainTECNALIA, Basque Research and Technology Alliance, 48160 Derio, SpainDepartment of Communications Engineering, University of the Basque Country, 48013 Bilbao, SpainOptical Fiber Displacement Sensors (OFDSs) provide several advantages over conventional sensors, including their compact size, flexibility, and immunity to electromagnetic interference. These features make OFDSs ideal for use in confined spaces, such as turbines, where direct laser access is impossible. A critical aspect of OFDS performance is the geometry of the fiber bundle, which influences key parameters such as sensitivity, range, and dead zones. In this work, we present a streamlined design methodology for azimuthally symmetric OFDSs to improve the linear range of these sensors. The most effective configuration we propose is the pentafurcated bundle, which consists of a central transmitting fiber surrounded by four concentric rings of fibers with different radii. Our experimental results show that the pentafurcated designs increase both the range—up to 10.5 mm—and the sensitivity of the sensor—<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>2</mn><msup><mi>mm</mi><mrow><mo>−</mo><mn>1</mn></mrow></msup></mrow></semantics></math></inline-formula>—while minimizing the dead zone of the sensor (2.5 mm), allowing accurate measurements even at very short distanceshttps://www.mdpi.com/1424-8220/25/2/418optical fiber sensorintensity-modulated optical sensoroptical fiber bundle designdisplacement sensorstructural health monitoringaeronautical sensing |
| spellingShingle | Gorka Zubia Joseba Zubia Josu Amorebieta Gotzon Aldabaldetreku Asier Zubia Gaizka Durana High-Performance Optical Fiber Displacement Sensor with Extended Linear Range and Sensitivity Sensors optical fiber sensor intensity-modulated optical sensor optical fiber bundle design displacement sensor structural health monitoring aeronautical sensing |
| title | High-Performance Optical Fiber Displacement Sensor with Extended Linear Range and Sensitivity |
| title_full | High-Performance Optical Fiber Displacement Sensor with Extended Linear Range and Sensitivity |
| title_fullStr | High-Performance Optical Fiber Displacement Sensor with Extended Linear Range and Sensitivity |
| title_full_unstemmed | High-Performance Optical Fiber Displacement Sensor with Extended Linear Range and Sensitivity |
| title_short | High-Performance Optical Fiber Displacement Sensor with Extended Linear Range and Sensitivity |
| title_sort | high performance optical fiber displacement sensor with extended linear range and sensitivity |
| topic | optical fiber sensor intensity-modulated optical sensor optical fiber bundle design displacement sensor structural health monitoring aeronautical sensing |
| url | https://www.mdpi.com/1424-8220/25/2/418 |
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