耦合条件对集成波导微环延时线性能的影响  

Influence of Coupling Conditions on Time Delay Line Characteristics of Integrated Waveguide Microring Resonators

作　　者：韩秀友[1] 张佳宁[1] 宋红妍[1] 吴彭生[1] 王凌华[1] 滕婕[1] 李善锋[1] 赵明山[1] 

机构地区：[1]大连理工大学物理与光电工程学院光子技术研究中心,辽宁大连116024

出　　处：《光学学报》2011年第6期139-144,共6页Acta Optica Sinica

基　　金：国家自然科学基金(60807015;60577014;61077015);教育部高校博士点基金(200801411037);中央高校基本科研业务费重点培育项目(DUT10ZDG03);辽宁省自然科学基金(20102020)资助课题

摘　　要：对应用于光控相控阵系统的级联微环集成波导光延时线进行了研究,重点分析了波导微环耦合系数在过耦合和欠耦合状态下对其延时响应的影响。以三环级联光延时线结构为例,研究了无限制耦合条件和过耦合条件下得到的优化结构参数以及获得的延时性能。结果表明,在小的延时量目标下,无限制耦合条件比过耦合条件更有利于实现带内平坦的延时响应和幅度响应,对集成波导微环光延时线的设计与实现具有良好的参考价值。The influence of coupling conditions of parallel-cascaded waveguide ring resonators on the time delay applications in the optically phased array antenna systems is analyzed. Two kinds of coupling conditions, over- coupling and restriction-free, are considered to achieve a certain target delay time by parallel-cascaded three ring resonators. The results show that the restriction-free coupling condition is better than the over-coupling one to obtain a flat time delay and amplitude response in the target delay bandwidth especially for the small target delay time, which is the advantage of ring-resonator-based tunable true time delay line.

关 键 词：集成光学 光延时线 微环谐振腔 耦合条件 

分 类 号：TN256[电子电信—物理电子学]