Intrinsic pressure response of a single mode cyclo olefin polymer fiber bragg grating

Jens Kristian Mølgaard Pedersen, Getinet Woyessa, Kristian Nielsen, Ole Bang

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


The intrinsic pressure response of a Fibre Bragg Grating (FBG) inscribed in a single-mode cyclo olefin polymer (COP) microstructured polymer optical fibre (mPOF) in the range 0-200 bar is investigated for the first time. In order to efficiently suppress the effects from changes in temperature and relative humidity the pressure calibration is performed in a gas free environment with the FBG submerged in water. As a result of the incompressible nature of water no temperature effects due to rapid pressure changes are observed. We find a highly linear, hysteresis-free response with a sensitivity of 2.982 ± 0.002 pm/bar. The corresponding fractional sensitivity is found to be 34.5·10-6 MPa-1 which is of the same order of magnitude as the results obtained for a multimode PMMA mPOF-FBG at 1562 nm previously reported in the literature. The resulting pressure resolution of our sensor is estimated to be 2 bar based on a root mean square deviation of 6 pm.
Original languageEnglish
Title of host publicationProceedings of the 25th International Conference on Plastic Optical Fibres
Number of pages4
Publication date2016
ISBN (Electronic)978-1-85449-408-5
Publication statusPublished - 2016
Event25th International Conference on Plastic Optical Fibres - Aston University, Birmingham, United Kingdom
Duration: 13 Sep 201615 Sep 2016
Conference number: 25


Conference25th International Conference on Plastic Optical Fibres
Location Aston University
CountryUnited Kingdom
SponsorAston University

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