Dipartimento di Elettronica, Informatica e Sistemistica, Università di Bologna, Bologna 40136, Italy.
Opt Lett. 2012 Sep 1;37(17):3669-71. doi: 10.1364/OL.37.003669.
We present the design and the fabrication of compact tunable silicon-on-insulator bandpass filters based on the integration of a Mach-Zehnder interferometer with ring resonators and activated via thermo-optic phase shifters. The proposed architecture provides wide filter bandwidth tunability from 10% to 90% of the free spectral range preserving the filter off-band rejection. Possible applications are channel subset selection in wavelength division multiplexing optical systems, adaptive filtering to signal bandwidth, and reconfigurable filters for gridless networking.
我们提出了一种基于马赫-曾德尔干涉仪与环形谐振器集成，并通过热光相移器激活的紧凑型硅基绝缘体带通滤波器的设计和制造。所提出的架构提供了从自由光谱范围的 10%到 90%的宽滤波器带宽可调谐性，同时保持滤波器的带外抑制。可能的应用包括在波分复用光学系统中进行信道子集选择、对信号带宽进行自适应滤波以及用于无网格网络的可重构滤波器。
