Channel drop filters using photonic crystal Fabry–Perot resonators
Channel drop filters using photonic crystal Fabry–Perot resonators
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DOI：
10.1016/j.optcom.2010.10.050
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发表时间：
2011-03
影响因子：
2.4
通讯作者：
Zetao Ma;K. Ogusu
中科院分区：
文献类型：
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作者：
Zetao Ma;K. Ogusu
我们提出了一种基于法布里-珀罗（F-P）谐振器在二维光子晶体与空气孔的三角形晶格的组合的信道下路滤波器。通过调节F-P谐振器之间的间距、空气孔的半径以及两个F-P谐振器的长度，我们可以选择性地改善滤波器的特性，并且在期望的谐振频率处获得95%的前向下降效率和90%的后向下降效率。对于两个F-P谐振器直接连接而不分离的情况，它形成环形行为，并且在谐振时具有75%的后降效率。此外，我们调查的光学双稳态的依赖于初始频率失谐的优化腔之一。获得了2 ps的开关速度。通过减小初始频率失谐量，可以大大抑制开关电源上的过冲。
We have proposed channel drop filters based on a combination of Fabry–Perot (F–P) resonators in a two-dimensional photonic crystal with a triangular lattice of air holes. By tuning the separation, the radii of air holes between F–P resonators, and the length of two F–P resonators, we can selectively improve filter characteristics and obtain a forward-dropping efficiency of 95% and a backward-dropping efficiency of 90% at desired resonance frequencies. For the case where two F–P resonators are directly connected without separation, it forms a ring behavior and has a backward-dropping efficiency of 75% at resonance. Moreover, we investigate the dependence of optical bistability in one of the optimized resonators on initial frequency detunings. A switching speed of 2ps is obtained. By decreasing the initial frequency detuning, overshoot on the switching-on power can be greatly suppressed.