Two-period contra-directional grating assisted coupler
Two-period contra-directional grating assisted coupler
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DOI：
10.1364/oe.24.022865
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发表时间：
2016-10-03
期刊：
影响因子：
3.8
通讯作者：
Kirk, A. G.
中科院分区：
文献类型：
--
作者：
Boroojerdi, M. T.;Menard, M.;Kirk, A. G.
本文介绍了一种新型集成分插滤波器的设计、分析和实验特性，该滤波器基于两个不同周期的反向光栅辅助耦合器，能够同时过滤两个独立的通道。用傅立叶分析解释了器件的性能，并用本征模展开法进行了数值模拟。这些器件是用电子束光刻技术在具有220 nm厚的器件层的绝缘体上硅片上制造的。傅里叶分析、模拟和实验结果一致，表明双周期结构的落端口响应是两个单周期光栅的落端口响应的叠加。因此，分出端口的输出通道可以独立设计，并且可以具有不同的带宽。(C)2016年度美国光学学会
We present the design, analysis, and experimental characterization of a novel integrated add-drop filter capable of filtering simultaneously two independent channels that is based on a contra-directional grating assisted coupler with two different periods. The device performance is explained using Fourier analysis and confirmed with numerical simulations using the eigenmode expansion method. The devices were fabricated using electron-beam lithography on a silicon-on-insulator wafer with a 220 nm thick device layer. The Fourier analysis, simulations and experimental results are in agreement and show that the drop port response of the two-period configuration is the superposition of the drop port responses of two single-period gratings. Therefore, the output channels at drop port can be designed independently and can have different bandwidths. (C) 2016 Optical Society of America