We investigate the response of PMMA microstructured polymer optical fibre Bragg gratings whenimmersed in methanol/water solutions. Overall we observe a permanent blue-shift in Bragg gratingwavelength after solvent evaporation. The main contribution in the resonance wavelength shift probably arisesfrom a permanent change in the size of the fibre, as already reported for high-temperature annealing ofpolymer optical fibres. As a consequence of the solution concentration dependence of the glass transitiontemperature of polymers, different methanol/water solutions lead to various degrees of frozen-in stressrelaxation with an overall blue-shift of the Bragg grating wavelength.
|Title of host publication||Proceedings of the 25th International Conference on Plastic Optical Fibers 2016|
|Publisher||University of Aston in Birmingham|
|Publication status||Published - 2016|
|Event||25th International Conference on Plastic Optical Fibres - Aston University, Birmingham, United Kingdom|
Duration: 13 Sep 2016 → 15 Sep 2016
Conference number: 25
|Conference||25th International Conference on Plastic Optical Fibres|
|Period||13/09/2016 → 15/09/2016|
- Microstructured polymer optical fibre
- Fibre Bragg grating
Fasano, A., Woyessa, G., Janting, J., Rasmussen, H. K., & Bang, O. (2016). Investigation of the in-solution relaxation of polymer optical fibre Bragg gratings. In Proceedings of the 25th International Conference on Plastic Optical Fibers 2016 (pp. 4). University of Aston in Birmingham.