一种窄带高消光比的可调谐聚合物微环谐振器的仿真分析  

The simulation analysis of a narrow-band high-extinction-ratio tunable polymer microring resonator

作　　者：沙晓鹏[1] 张鑫[1] 李志全[1] 童凯[1] 李惠光[1] 

机构地区：[1]燕山大学电气工程学院,河北秦皇岛066004

出　　处：《光电子．激光》2015年第1期35-42,共8页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金(61172044);河北省自然科学基金(F2012203204)资助项目

摘　　要：基于耦合模理论、微环谐振理论和电光调制理论,提出了一种可由电光调谐并带有两段U型波导的微环谐振器,通过仿真结果讨论了输出光谱、U型波导长度和耦合系数等参数的变化关系。仿真结果证明,相比较于其他报道过的带有U型波导的微环谐振器,本文所提出的微环谐振器在耦合系数取0.1时,实现了60dB以上的极高消光和极窄的带宽,同时自由光谱范围(FSR)可达到56nm。通过改变加载在微环和U型波导上的电压,可以分别实现波长和消光比的调谐。Based on coupling mode theory, microring resonant theory and electro-optical modulation theo- ry,we propose an electro-optically tunable microring resonator with two U-bend waveguides. The rela-tionships between output spectrum and the length of U-bend waveguide as well as coupling coefficient are analyzed through simulation. The simulation results show that the 15μm radius microring outputs a relatively large free spectrum range of 56 nm, a 60 dB higher extinction ratio and an extremely narrow bandwidth when the coupling coefficient is locked in a very reasonable range. Besides, the output wave-length and extinction ration can be modulated by the voltages loaded on microring and U-bend waveguide respectively.

关 键 词：U型波导 微环谐振器 滤波效果 消光比 耦合系数 

分 类 号：TN256[电子电信—物理电子学]