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In the present paper, authors have investigated two characteristics of three different waveguides employed in Arrayed Waveguide Grating (AWG) in Passive Optical Networks (PON) where rates of variations are processed. Both the thermal and the spectral effects are taken into account. The waveguides are made of Lithium Niobate, germaniadoped silica, and Polymethyl Metha Acrylate (PMMA) polymer. The thermal and spectral sensitivities of optical devices are also analyzed. In general, both qualitative and quantitative analysis of the temporal and spectral responses of AWG and sensitivity are parametrically processed over wide ranges of the set of affecting parameters.
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