The chirp and apodization characteristics of long-period grating (LPG) are analyzed, and the theoretic foundation of adjustable gain flattening filter based on LPG is provided.
分析了长周期光纤光栅(LPG)的啁啾特性和切趾特性，给出了基于LPG的增益平坦滤波器可调的理论依据。
The chirp and apodization characteristics of long-period grating (LPG) are analyzed, and the theoretic foundation of adjustable gain flattening filter based on LPG is provided.
分析了长周期光纤光栅(LPG)的啁啾特性和切趾特性，给出了基于LPG的增益平坦滤波器可调的理论依据。
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