Ding Yunhong, Pu Minhao, Liu Liu, Xu Jing, Peucheret Christophe, Zhang Xinliang, Huang Dexiu, Ou Haiyan
Wuhan National Laboratory for Optoelectronics, School of Optoelectronics Science and Engineering, Huazhong University of Science and Technology, Wuhan, Hubei, China.
Opt Express. 2011 Mar 28;19(7):6462-70. doi: 10.1364/OE.19.006462.
A novel and simple bandwidth and wavelength-tunable optical bandpass filter based on silicon microrings in a Mach-Zehnder interferometer (MZI) structure is proposed and demonstrated. In this filter design, the drop transmissions of two microring resonators are combined to provide the desired tunability. A detailed analysis and the design of the device are presented. The shape factor and extinction ratio of the filter are optimized by thermally controlling the phase difference between the two arms of the MZI. Simultaneous bandwidth and wavelength tunability with in-band ripple control is demonstrated by thermally tuning the resonance offset between the two microring resonators.
提出并演示了一种基于马赫-曾德尔干涉仪（MZI）结构中硅微环的新型简单带宽和波长可调谐光学带通滤波器。在这种滤波器设计中，两个微环谐振器的下降传输被组合起来以提供所需的可调谐性。给出了该器件的详细分析和设计。通过热控制MZI两臂之间的相位差来优化滤波器的形状因子和消光比。通过热调谐两个微环谐振器之间的谐振偏移，展示了具有带内纹波控制的同时带宽和波长可调谐性。
