基于QD-SOA-MZI结构的全光逻辑门的性能优化  

Performance Optimization of All Optical Logic Gates based on QD-SOA-MZI Structure

作　　者：王兆翔[1] 王海龙[1] 杨文华[1] 韦志禄 龚谦[2] 

机构地区：[1]曲阜师范大学物理工程学院,山东曲阜273165 [2]中科院上海微系统与信息技术研究所信息功能材料国家重点实验室,上海200050

出　　处：《通信技术》2016年第6期782-787,共6页Communications Technology

基　　金：山东省自然科学基金(No.ZR2014FM011);信息功能材料国家重点实验开放课题(No.SKL201307)资助~~

摘　　要：基于QD-SOA的XPM效应,用细化分段方法对QD-SOA静态和动态过程建模,采用四阶龙格库塔法格式和牛顿迭代法求解光场传输方程和速率方程,模拟全光逻辑与门的逻辑功能。采用"功率对比度积"这一新型特征参数作为系统优化指标,讨论MZI结构的时延时间、输入光功率等关键参数对此特征参数的影响,快速找到了时延、输入光功率的最优工作点,即当时延为15 ps、输入功率为15 dBm时,全光逻辑与门的性能最优。Based on XPM effect of QD-SOA, by refining segmentation method of QD-SOA static and dynamic process modeling,the Newton iteration method by the four order Runge-Kutta format is used to solve the transition rate equation and light propagation equations, the logic function of the all-optical logic AND gate is simulated. Theproduct of power and contrast ratio is used as a parameter to measure the performance of the QD-SOA-MZI structure based all-optical logic gate, by which we can quickly get the optimal working point of the gate.Meanwhile,the influence of the key parameters such as the time delay of the MZI structure and the input optical power on the characteristic parameters are discussed.It has been shown that the optimal delay time is 15 ps, and the optimal input power is 15 dBm, for these parameters the optimal performance of the all-optical logic AND gate can be achieved.

关 键 词：量子点光放大器 交叉相位调制 全光逻辑门 QD-SOA-MZI结构 

分 类 号：TN929.1[电子电信—通信与信息系统]