The results indicate that there is a smooth and isolated band in the band gap if photonic crystal has a dot defect.

计算结果表明，在二维光子晶体中引入单独的点缺陷后，在原来完整的光子晶体的禁带中会出现平坦孤立的能带。

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The purpose of this paper is to study the dot defect and line defect in photonic crystal, waveguide and demultiplexer.

本文主要研究了光子晶体中的点缺陷和线缺陷，以及由缺陷构成的光子晶体波导和分频器。

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In this paper, the main causes of the defect black dot on the surface of cathode in CPTs are described in detail , some measures are adopted and the apparent results are achieved.

本文叙述了彩色显像管三枪“目玉”缺陷的主要成因，找出消除办法，取得显著成效。

youdao

In this paper, the main causes of the defect black dot on the surface of cathode in CPTs are described in detail , some measures are adopted and the apparent results are achieved.

本文叙述了彩色显像管三枪“目玉”缺陷的主要成因，找出消除办法，取得显著成效。

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