| Photonic Crystal Waveguide Intersection Based on Self-Imaging of Multi-Mode Interference |
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| 作者姓名： | 丁卫强 汤冬华 陈历学 赵远 刘艳 |
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| 作者单位： | Physics Department, Harbin Institute of Technology, Harbin 150001 |
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| 摘 要： | A new mechanism of intersection formed by two line defect photonic crystal （PC） waveguides are numerically investigated using the finite-diFference time-domain method. The results show that the normalized crosstalk is smaller than 10^-4; the reflection is smaller than 10^-3, and the transmission is larger than 0.999. The authors analyse the physical origins and find that a modified self-imaging process in the intersected multi-mode region is the main reason of the excellent performance. This kind of multi-mode interference based intersection may find potential applications in PC optical circuits.
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| 关 键 词： | 晶体 波导管 半成像 多模型干扰 |
| 修稿时间： | 2006-09-04 |
Photonic Crystal Waveguide Intersection Based on Self-Imaging of Multi-Mode Interference |
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| DING Wei-Qiang,TANG Dong-Hua,CHEN Li-Xue,ZHAO Yuan,LIU Yan.Photonic Crystal Waveguide Intersection Based on Self-Imaging of Multi-Mode Interference[J].Chinese Physics Letters,2007,24(1):127-130. |
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| Authors: | DING Wei-Qiang TANG Dong-Hua CHEN Li-Xue ZHAO Yuan LIU Yan |
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| Affiliation: | Physics Department, Harbin Institute of Technology, Harbin 150001 |
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| Abstract: | A new mechanism of intersection formed by two line defect photonic crystal (PC) waveguides are numerically investigated using the finite-difference time-domain method. The results show that the normalized crosstalk is smaller than 10-4; the reflection is smaller than 10-3, and the transmission is larger than 0.999. The authors analyse the physical origins and find that a modified self-imaging process in the intersected multi-mode region is the main reason of the excellent performance. This kind of multi-mode interference based intersection may find potential applications in PC optical circuits. |
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| Keywords: | 42 70 Qs 42 82 Et 42 79 Gn 42 25 Hz |
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