Abstract
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 language | English |
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| Title of host publication | Proceedings of the 25th International Conference on Plastic Optical Fibres |
| Number of pages | 4 |
| Publication date | 2016 |
| ISBN (Electronic) | 978-1-85449-408-5 |
| Publication status | Published - 2016 |
| Event | 25th International Conference on Plastic Optical Fibres - Aston University, Birmingham, United Kingdom Duration: 13 Sept 2016 → 15 Sept 2016 Conference number: 25 |
Conference
| Conference | 25th International Conference on Plastic Optical Fibres |
|---|---|
| Number | 25 |
| Location | Aston University |
| Country/Territory | United Kingdom |
| City | Birmingham |
| Period | 13/09/2016 → 15/09/2016 |
| Sponsor | Aston University |