In this paper, extensive study on the apodization of fiber Bragg gratings is presented. Particularly, not only influence of non-true and true apodization for gratings with uniform period is analyzed, but also the influence of both of these techniques impact on spectral properties of chirped gratings. Both numerical and experimental results are provided. For true apodized uniform gratings, impact on spectral response of true apodization is evaluated for three apodization windows, i.e. cos2, Gaussian and triangle.
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Konrad Markowski, Arkadiusz Perka, Kazimierz Jędrzejewski, Tomasz Osuch, "Custom FBGs inscription using modified phase mask method with precise micro- and nano-positioning," Proc. SPIE 10031, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2016, 100311H (28 September 2016);