Good performance of chirped fiber Bragg gratings obtained by asymmetrically one-side exposure apodization;
非对称单侧曝光切趾使啁啾光纤光栅获得优化性能
cosine-shaped and elliptical diaphragms are adopted to achieve the apodization of the instrumental function curve,and their respective theoretical instrumental resolutions are calculated.
在采用面光源的单光栅等效双光栅型干涉选择调幅光谱仪中，采用菱形、梯形、余弦形、椭圆等特殊形状的光阑，来完成对其仪器函数的切趾，并求出相应的理论分辨本领。
Sectional apodization is used on chirped phase-shifted grating to obtain ap.
采用分段切趾的方法获得满足光通信要求的滤波特性,利用传输矩阵法分析了切趾前后透射峰特性的变化,结果表明:切趾改善了滤波器的幅度和相位响应,依据滤波器的设计要求选取不同的切趾函数以及切趾比例;切趾还大大减弱了透射峰波长和深度对相移量的敏感度,适当切趾后相移量的影响可以忽略。
As a new and challenging type of imaging spectrometer,its successful launch implies IFTS will play an important role in hyperspectral remote sensing applications,in which apodization function is an important part of interferogram pre-processing,and it has a powerful effect on the accuracy of reconstructed spectra.
在干涉光谱成像过程中,切趾函数处理是干涉成像光谱仪光谱复原过程中的一个重要环节,对复原光谱的精度有着极其重要的影响。
The performance of linearly chirped gratings is optimized by designing and changing the parameters of apodization functions,aiming at some issues such as the unexpectedly fluctuating group delay ripple(GDR) in chirped fiber Bragg grating(CFBG) which are applied to achieving all-optical dispersion compensation in 40 Gb/s optical communications.
针对制作可用于40 Gb/s全光色散补偿的宽带线性啁啾光栅时出现带内群时延纹波波动较大等问题,提出了一种通过设计和改变切趾函数的参量来优化线性啁啾光栅的新方法。
The effect of Direct Current(DC) apodization on the Fiber Bragg Gratings(FBG) was investigated with mode-coupling theory and experiment,and the relationship of the DC apodization and the grating chirp was given.
从模耦合方程出发,分析了直流切趾对光纤光栅特性的影响,给出了直流切趾和光栅啁啾之间的关系,提出了用线性直流切趾来实现均匀模板制作啁啾光栅和同一啁啾模板制作不同色散特性光栅的方法。