微环谐振腔集成波导光延时线研究  

Study on the Integrated Waveguide Optical Delay Line Based on Microring Resonators

作　　者：韩秀友[1] 宋红妍[1] 张佳宁[1] 吴彭生[1] 滕婕[1] 王凌华[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》2010年第3期782-786,共5页Acta Optica Sinica

基　　金：国家自然科学基金(60807015;60577014);教育部高校博士点新教师基金(200801411037);大连理工大学青年教师培养基金(893210);大连理工大学引进人才启动基金(893322)资助课题

摘　　要：从波导微环谐振腔的光场传输函数出发,推导出其延时响应函数,分析了微环波导损耗对其延时响应特性的影响,发现应用于光学相控阵天线系统的微环谐振腔光延时线必须工作于过耦合状态,即耦合系数κ与微环波导损耗因子γ应满足关系式κ>(1-γ)。以延时抖动品质因子ε为判据,建立了微环谐振腔光延时线的优化设计方法,获得了目标延时为0.6 ns,延时带宽为2 GHz,延时抖动品质因子小于1×10^(-3)ns^2的四环级联波导微环谐振腔光延时线的优化结构参数。The delay time response function of the waveguide microring resonator is deduced from its optical-field transmission function.The influence of microring waveguide loss on the delay time characteristics is analyzed and the result shows that the microring resonator-based optical delay line applied in the optically controlled phased array antenna system should be at over-coupled condition,which means that the coupling coefficientκand the microring waveguide loss factorγshould satisfy the relation ofκ（1-γ）.According to the criterion of delay time ripple guality factorε,the method of optimized design of the microring resonator-based optical delay line is established,and the optimized structural parameters of cascaded four microring resonators for target delay time of 0.6 ns,bandwith of 2 GHz,and delay time ripple guality factor less than 1×10^（-3） ns^2 are obtained.

关 键 词：集成光波导 光延时线 微环谐振腔 耦合系数 损耗因子 

分 类 号：TN265[电子电信—物理电子学]