Annular Cavity Design for Photoluminescent Polymer Optical Fiber Sensors

We present optimization results on the design of a polymer optical fiber single point sensor suitable for photoluminescence-based sensing. The single point sensing design consists of one or two annular cavities, separated by a small distance, milled into the fiber and subsequently filled with a thic...

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Main Authors: Rune Inglev, Jakob Janting, Ole Bang
Format: Article
Language:English
Published: MDPI AG 2020-09-01
Series:Sensors
Subjects:
Online Access:https://www.mdpi.com/1424-8220/20/18/5199
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author Rune Inglev
Jakob Janting
Ole Bang
author_facet Rune Inglev
Jakob Janting
Ole Bang
author_sort Rune Inglev
collection DOAJ
description We present optimization results on the design of a polymer optical fiber single point sensor suitable for photoluminescence-based sensing. The single point sensing design consists of one or two annular cavities, separated by a small distance, milled into the fiber and subsequently filled with a thick solution of polymer, solvent, and photoluminescent molecules, which is then allowed to dry. The design is tested by varying the depth and length of a single cavity and utilizing two cavities with varying separations. Results from experiments show a maximum response at a separation of 2 mm for which we present an analytical explanation. A geometrical, numerical simulation model, taking into account both skew and meridional rays, is developed and shows very good agreement with the experimental results. The fiber design presents a general platform that has the potential for the fabrication of multi-point photoluminescent sensors, for which it is necessary to have several points along the fiber functionalized for sensing. Furthermore, the approach with polymer fibers and polymer sensing gels allows for a robust integration of the sensing matrix and the optical fiber, more so than is possible using glass optical fibers.
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spelling doaj.art-203a4da44c3b4a289843c600563180652023-11-20T13:28:53ZengMDPI AGSensors1424-82202020-09-012018519910.3390/s20185199Annular Cavity Design for Photoluminescent Polymer Optical Fiber SensorsRune Inglev0Jakob Janting1Ole Bang2Department of Photonics, Danish Technical University, Ørsteds Plads Building 343, 2800 Kongens Lyngby, DenmarkDepartment of Photonics, Danish Technical University, Ørsteds Plads Building 343, 2800 Kongens Lyngby, DenmarkDepartment of Photonics, Danish Technical University, Ørsteds Plads Building 343, 2800 Kongens Lyngby, DenmarkWe present optimization results on the design of a polymer optical fiber single point sensor suitable for photoluminescence-based sensing. The single point sensing design consists of one or two annular cavities, separated by a small distance, milled into the fiber and subsequently filled with a thick solution of polymer, solvent, and photoluminescent molecules, which is then allowed to dry. The design is tested by varying the depth and length of a single cavity and utilizing two cavities with varying separations. Results from experiments show a maximum response at a separation of 2 mm for which we present an analytical explanation. A geometrical, numerical simulation model, taking into account both skew and meridional rays, is developed and shows very good agreement with the experimental results. The fiber design presents a general platform that has the potential for the fabrication of multi-point photoluminescent sensors, for which it is necessary to have several points along the fiber functionalized for sensing. Furthermore, the approach with polymer fibers and polymer sensing gels allows for a robust integration of the sensing matrix and the optical fiber, more so than is possible using glass optical fibers.https://www.mdpi.com/1424-8220/20/18/5199polymer optical fibersphotoluminescencesensor design
spellingShingle Rune Inglev
Jakob Janting
Ole Bang
Annular Cavity Design for Photoluminescent Polymer Optical Fiber Sensors
Sensors
polymer optical fibers
photoluminescence
sensor design
title Annular Cavity Design for Photoluminescent Polymer Optical Fiber Sensors
title_full Annular Cavity Design for Photoluminescent Polymer Optical Fiber Sensors
title_fullStr Annular Cavity Design for Photoluminescent Polymer Optical Fiber Sensors
title_full_unstemmed Annular Cavity Design for Photoluminescent Polymer Optical Fiber Sensors
title_short Annular Cavity Design for Photoluminescent Polymer Optical Fiber Sensors
title_sort annular cavity design for photoluminescent polymer optical fiber sensors
topic polymer optical fibers
photoluminescence
sensor design
url https://www.mdpi.com/1424-8220/20/18/5199
work_keys_str_mv AT runeinglev annularcavitydesignforphotoluminescentpolymeropticalfibersensors
AT jakobjanting annularcavitydesignforphotoluminescentpolymeropticalfibersensors
AT olebang annularcavitydesignforphotoluminescentpolymeropticalfibersensors