article · AIP Advances
The apodization function has a significant impact on the state of the art of group delay, dispersion compensation, and acceptable decrease in side lobes in the spectrum of Fiber Bragg Grating (FBG) reflection. Accordingly, the Bragg grating length would be considered the backbone parameter in order to achieve a distinguishable performance. Here, the utilization influence of the presence of FBG is considered a dispersion compensator. In addition, we have implemented a tuned uniform-apodized FBG methodology according to various apodization functions. Common apodization functions have been studied and tested effectively. Experimental results show that the proposed raised cosine apodized function has scored the highest reflectivity with 50% reduction in the side lobe level and the narrowest bandwidth among all tested functions. Moreover, simulations for this function were performed with various lengths of grating. It is demonstrated that the reflection spectrum value is fixed at 100% at grating lengths greater than or equal to 28 mm and the minimum dispersion value is realized.
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DOI: 10.1063/5.0026190
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