@INPROCEEDINGS {28455,
author={C. Marques and A.  Pospori and P. Mergo and P.S André and D. J.  Webb},
doi={},
booktitle={SPIE Optics+ Optoelectronics},
title={Impact of thermal pretreatment on preforms for fast Bragg gratings inscription using undoped PMMA POFs},
year={2017},
month={April},
volume={Proc},
pages={1-6} 
}