可调谐集成光波导射频滤波器研究  

Study on a Tunable Radio Frequency Filter Based on Integrated Optical Waveguide

作　　者：邹品[1,2] 韩秀友[1,2] 王瑜[1,2] 王凌华[1,2] 谷一英[1,2] 王锦艳[3,2] 蹇锡高[3,2] 赵明山[1,2] 

机构地区：[1]大连理工大学物理与光电工程学院,辽宁大连116024 [2]大连理工大学光子技术研究中心,辽宁大连116024 [3]大连理工大学化工学院,辽宁大连116024

出　　处：《光学学报》2013年第10期143-149,共7页Acta Optica Sinica

基　　金：国家自然科学基金(60807015;61077015);国家高科技发展计划(2012AA040406);教育部高校博士点基金(200801411037);辽宁省自然科学基金(20102020);中央高校基本科研业务费专项(DUT13JB01)

摘　　要：针对单边带微波光传输应用要求,提出并研究了一种基于集成光波导微环谐振器与马赫-曾德尔干涉仪相结合的可调谐微波光子滤波器。分析了滤波器结构参数,包括耦合系数κr、周损耗因子γ1、附加相移Δφ1等对滤波响应特性的影响。结果表明滤波曲线的矩形度和消光比存在相互制约的关系。基于聚合物液态聚倍半硅氧烷(PSQ-L)波导,设计出矩形度为0.8、消光比为32dB的微波光子滤波器,通过电极热光调相该滤波器可以实现8~69GHz范围内的可调谐射频单边带滤波功能。A new tunable microwave photonic filter combining optical waveguide micro-ring resonator and Mach- Zehnder interferometer （MZI） is proposed to realize single sideband filtering. The influences of the filter structural parameters, such as coupling coefficient Jcr, round-trip loss Yl and additional phase shift A^I, etc., on the filtering response are investigated. The result shows that there is a tradeoff between the rectangle shape and extinction ratio. According to the polymer polysilsesquioxane-liquid （PSQ-L） waveguide, a microwave photonic filter with rectangle shape factor of 0.8 and extinction ratio of 32 dB is designed, and the tunable radio frequency single sideband filtering from 8 GHz to 69 GHz can be achieved with the thermal-optic phase shifters.

关 键 词：集成光学 微波光子滤波器 微环谐振器 马赫-曾德尔干涉仪 单边带滤波 

分 类 号：O436[机械工程—光学工程]