title: Analysis of stationary power/amplitude distributions for multiple channels of sampled FBGs.
abstract: Stationary power/amplitude distributions for multiple channels of the sampled fiber Bragg grating (SFBG) along the grating length are analyzed. Unlike a uniform FBG, the SFBG has multiple channels in the reflection spectrum, not a single channel. Thus, the stationary power/amplitude distributions for these multiple channels are analyzed by using two different theoretical models. In the first model, the SFBG is regarded as a set of grating sections and non-grating sections, which are alternately stacked. A step-like distribution is obtained for the corresponding power/amplitude of each channel along the grating length. While, in the second model, the SFBG is decomposed into multiple uniform "ghost" gratings, and a continuous distribution is obtained for each ghost grating (i.e., each channel). After a comparison, the distributions obtained in the two models are identical, and the equivalence between the two models is demonstrated. In addition, the impacts of the duty cycle on the power/amplitude distributions of multiple channels of SFBG are presented.
authors.forename: Ya
authors.initials: Y
authors.lastname: Xing
authors.forename: Xihua
authors.initials: X
authors.lastname: Zou
authors.forename: Wei
authors.initials: W
authors.lastname: Pan
authors.forename: Lianshan
authors.initials: L
authors.lastname: Yan
authors.forename: Bin
authors.initials: B
authors.lastname: Luo
authors.forename: Liyang
authors.initials: L
authors.lastname: Shao