Fabrication and characterization of polymer fiber Bragg gratings inscribed with KrF UV laser
Fabrication and characterization of polymer fiber Bragg gratings inscribed with KrF UV laser, Proc Internacional Conf. on Plastic Optical Fibers - POF, Nuremberg, Germany, Vol. 1, pp. 371 - 375, September, 2015.
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We report the inscription and characterization of Bragg gratings in different polymer optical fibers.
The inscription was done with a 248 nm UV radiation from a KrF laser, conventionally used for the inscription of silica FBGs. The polymer fiber Bragg gratings were written in a few seconds, due the strong absorption and high photosensitivity of PMMA under deeper wavelengths. This work provides a step forward related with the time needed to inscribe PFBGs. After the inscription, the Bragg gratings were characterized to strain, tempera- ture, pressure and humidity, revealing sensitivities closer to the ones reported for PFBGs inscribed with 325 nm UV radiation.