Femtosecond laser induced refractive index structures in polymer optical fibre (POF) for sensing

S. J. Liang; P. J. Scully; J. Schille; J. Vaughan; W. Perrie

doi:10.1117/12.835122

5 October 2009 Femtosecond laser induced refractive index structures in polymer optical fibre (POF) for sensing

S. J. Liang, P. J. Scully, J. Schille, J. Vaughan, W. Perrie

Proceedings Volume 7503, 20th International Conference on Optical Fibre Sensors; 75036S (2009) https://doi.org/10.1117/12.835122
Event: 20th International Conference on Optical Fibre Sensors, 2009, Edinburgh, United Kingdom

Abstract

Techniques to directly write localised refractive index structures in polymer optical fibres (POF) are presented, using UV (400nm) ultrafast laser with pulse lengths of 100 fs to create in-fibre gratings for sensing. No doping is necessary for photosensitisation so commercially available POF is used. An in-fibre grating consisting of a 1.8 μm wide refractive index structure with a periodicity of 189 nm was demonstrated in single mode polymer fibre with optimised laser processing parameters.

Citation Download Citation

S. J. Liang, P. J. Scully, J. Schille, J. Vaughan, and W. Perrie "Femtosecond laser induced refractive index structures in polymer optical fibre (POF) for sensing", Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 75036S (5 October 2009); https://doi.org/10.1117/12.835122

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