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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Webb, D. J.
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Topics
Publications (19/19 displayed)
- 2018Novel thermal annealing methodology for permanent tuning polymer optical fiber Bragg gratings to longer wavelengthscitations
- 2017Thermal and chemical treatment of polymer optical fiber Bragg grating sensors for enhanced mechanical sensitivitycitations
- 2017Polymer optical fiber Bragg grating inscription with a single UV laser pulsecitations
- 2017Polymer optical fiber Bragg grating inscription with a single UV laser pulse
- 2017Polymer optical fiber sensors in human life safety
- 2017Annealing and etching effects on strain and stress sensitivity of polymer optical fibre Bragg grating sensors
- 2017Time-dependent variation of POF Bragg grating reflectivity and wavelength submerged in different liquids
- 2017Portable polymer optical fibre cleaver
- 2016Passive and Portable Polymer Optical Fiber Cleavercitations
- 2016Fuel level sensor based on polymer optical fiber Bragg gratings for aircraft applicationscitations
- 2015Time-dependent variation of fiber Bragg grating reflectivity in PMMA-based polymer optical fiberscitations
- 2015Fiber-optic liquid level monitoring system using microstructured polymer fiber Bragg grating array sensors: performance analysiscitations
- 2014Increase of the photosensitivity of undoped poly(methylmethacrylate) under UV radiation at 325 nmcitations
- 2014Investigations on birefringence effects in polymer optical fiber Bragg gratingscitations
- 2014Photosensitivity mechanism of undoped poly(methyl methacrylate) under UV radiation at 325 nm and its spatial resolution limitcitations
- 2013Highly photosensitive polymethyl methacrylate microstructured polymer optical fiber with doped corecitations
- 2013Connectorization of fibre Bragg grating sensors recorded in microstructured polymer optical fibrecitations
- 2011Photonic crystal fiber Bragg grating based sensors-opportunities for applications in healthcare
- 2011Optical fibre Bragg grating recorded in TOPAS cyclic olefin copolymercitations
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document
Increase of the photosensitivity of undoped poly(methylmethacrylate) under UV radiation at 325 nm
Abstract
In this paper we report, for the first time to our knowledge, an increase of the photosensitivity of a microstructured polymer optical fibre (mPOF) made of undoped PMMA due to applied strain during the fabrication of the gratings. In the work, fibre Bragg gratings (FBGs) have been fabricated in undoped PMMA mPOFs with a hexagonal structure of three rings in the inner cladding. Two sets of FBGs were inscribed at two different resonant wavelengths (827 nm and 1562 nm) at different strains using an UV He-Cd laser at 325 nm focused by a lens and scanned over the fibre. We observed an increase of the reflection of the fibre Bragg gratings when the fabrication strain is higher. The photosensitivity mechanism is discussed in the paper along with the chemical reactions that could underlie the mechanism. Furthermore, the resolution limit of the material was investigated.