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题名: Finite-difference time-domain analysis of deformed square cavity filters with a traveling-wave-like filtering response by mode coupling
作者: Chen Q (Chen Qin);  Yang YD (Yang Yue-De);  Huang YZ (Huang Yong-Zhen)
发表日期: 2007
摘要: An add-drop filter based on a perfect square resonator can realize a maximum of only 25% power dropping because the confined modes are standing-wave modes. By means of mode coupling between two modes with inverse symmetry properties, a traveling-wave-like filtering response is obtained in a two-dimensional single square cavity filter with cut or circular corners by finite-difference time-domain simulation. The optimized deformation parameters for an add-drop filter can be accurately predicted as the overlapping point of the two coupling modes in an isolated deformed square cavity. More than 80% power dropping can be obtained in a deformed square cavity filter with a side length of 3.01 mu m. The free spectral region is decided by the mode spacing between modes, with the sum of the mode indices differing by 1. (c) 2007 Optical Society of America.
刊名: OPTICS LETTERS
专题: 中国科学院半导体研究所(2009年前)_期刊论文

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推荐引用方式:
Chen, Q (Chen, Qin); Yang, YD (Yang, Yue-De); Huang, YZ (Huang, Yong-Zhen) .Finite-difference time-domain analysis of deformed square cavity filters with a traveling-wave-like filtering response by mode coupling ,OPTICS LETTERS,APR 15 2007,32 (8):967-969
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