کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1864865 | 1530666 | 2006 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of point defect geometry on localized defect modes in two-dimensional photonic crystals
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک و نجوم (عمومی)
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چکیده انگلیسی
A numerical study of point defect modes in two-dimensional square array of dielectric cylinders in air is presented. Three kinds of defect are considered, namely, circular, square and rectangular, respectively. The results show that for square defects, the defect modes are only dependent of the defect filling fraction Fd, regardless of the defect orientations. Further evidence shows that the defect modes for square defects have almost the same features as those of the circular defects having the same defect filling fraction, exhibiting the independence of these two geometries. However, for the rectangular defects, the defect modes show a dependence on their geometry. When the aspect ratio of the rectangle defect is big enough, the defect modes exhibit the splitting feature. This provides a way to split the degenerate defect modes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters A - Volume 349, Issues 1â4, 9 January 2006, Pages 285-290
Journal: Physics Letters A - Volume 349, Issues 1â4, 9 January 2006, Pages 285-290
نویسندگان
Fugen Wu, Tingwan Wu, Zhengyou Liu, Youyan Liu,