Fabrication and Characterization of Bragg Grating in CYTOP POF at 600-nm Wavelength

We demonstrate Bragg grating inscription in commercial CYTOP POF at a wavelength of 600 nm using a 248 nm krypton fluoride excimer laser system with a repetition rate of 40 Hz and average pulse energy of 0.60 ± 0.02 mJ during 60 min. Experimental characterization of the Bragg grating is performed under different conditions, where the temperature and strain sensitivities were accurately measured to define potential sensing and optical communication applications. Furthermore, different humidity conditions were experimentally tested, and it was proved CYTOP POF as a good candidate for sensing applications under humidity change environment.