【作者】 徐斌；

【导师】 邱怡申；

【作者基本信息】 福建师范大学 ， 光学， 2004， 硕士

【摘要】 随着阵列波导光栅(AWG)逐步进入实用化阶段，其发展的方向是在改善其性能的基础上扩大它的应用范围。本文分析的级联AWGs色散补偿系统正是AWG应用范围拓展的体现，此系统尤其适用于高码速、大容量的波分复用系统中。 首先，分析了级联AWGs系统色散补偿的理论基础，即时(?)空变换原理。其次，从两个角度(时域、空域)对级联AWGs系统进行了详细的分析：在时域，分析了色散补偿及脉冲平移的原理，分析推导出经过补散后的脉冲波形的解析表达式，并以一线性啁啾脉冲代入此表达式来作具体的分析；在空域，我们在实用化器件平坦光谱响应的设计要求前提下，将级联AWGs系统视为空间线性不变系统，富有新意的提出了用点扩展函数的方法来分析系统的传输特性，得出了较简洁的输出端焦场的解析表达式，并对系统的串扰特性进行了分析，在数学工具软件的辅助下，用计算机数值模拟分析了串扰与系统主要结构参数的重要关系，对系统的设计具有一定的指导意义。更多还原

【Abstract】 With arrayed-waveguide grating (AWG) stepping into its utilization gradually, the orientation of development of it lies in expanding its application area on the basis of improving its capability. In this thesis, the cascade AWGs system that is used to compensate the dispersion is the very embodiment of expanding its application area and fits well the DWDM high-speed communicaion .Firstly, In this thesis, the theorem foundation of cascade AWGs for dispersion compensation system, namely time-space fourier conversion is described. Secondly, we analyze the system from two perspectives : time domain and space domain. In time domain, we analyze the principle of dispersion compensation using cascade AWGs with space filter. Taking a linear chirp pulse for example, we obtain the expression of compensated pulse distribution. In space domain, a novel method in terms of point-spread function is used in the transmission theory of cascade AWGs which is looked on as a linear space invariant system , thus, a laconic expression of output field of the system is obtained. Furthermore, we give the dependences of the crosstalk vs the configuration parameters of the system, with the help of math auxiliary software.更多还原