Fabrication and Characterization of Bragg Gratings in a Graded-index Perfluorinated Polymer Optical Fiber

This work deals with the ultra violet laser based fabrication of Bragg gratings in perfluorinated polymer optical fibers and their characterization. This kind of polymer fibers shows a higher transparency than typical polymer fibers based on polymers with carbon hydrogen bonds like polymethylmethacrylate, the most used material for polymer optical fibers to date. Up to now only gratings inscribed by the phase mask technique in thin slabs of the amorphous fluoropolymer CYTOP (cyclic transparent optical polymer) made from polymer fibers were successfully detected. Infrared spectra of Bragg gratings in a perfluorinated polymer fiber are presented for the first time here.