Chin. Phys. Lett.  2007, Vol. 24 Issue (1): 127-130    DOI:
Original Articles |
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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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.
Keywords: 42.70.Qs      42.82.Et      42.79.Gn      42.25.Hz     
Published: 01 January 2007
PACS:  42.70.Qs (Photonic bandgap materials)  
  42.82.Et (Waveguides, couplers, and arrays)  
  42.79.Gn (Optical waveguides and couplers)  
  42.25.Hz (Interference)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2007/V24/I1/0127
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DING Wei-Qiang
TANG Dong-Hua
CHEN Li-Xue
ZHAO Yuan
LIU Yan
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