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Photonic Crystal Waveguide Intersection Based on Self-Imaging of Multi-Mode Interference |
| DING Wei-Qiang;TANG Dong-Hua;CHEN Li-Xue;ZHAO Yuan;LIU Yan |
| Physics Department, Harbin Institute of Technology, Harbin 150001 |
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| Cite this article: |
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DING Wei-Qiang, TANG Dong-Hua, CHEN Li-Xue et al 2007 Chin. Phys. Lett. 24 127-130 |
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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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Published: 01 January 2007
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