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Line defect splitters for self-collimated beams in photonic crystals |
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| Authors: | Haibo Chen Zhaofeng Li Fuhua Yang |
| Affiliation: | a State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, P.O. Box 912, Beijing 100083, China b The Research Center of Semiconductor Functional Film Engineering Technology and State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Micro-systems and Information Technology, Chinese Academy of Sciences, 865 Changning RD, Shanghai, 200050, China |
| Abstract: | A one-to-two splitter for self-collimated beams in photonic crystal (PC) is designed by inserting one row of line defects. Finite-difference time-domain (FDTD) method is used to simulate the light propagation process. Our systematical studies show that the splitting ratio is a function of the airholes size of the line defect radius, and stays fairly constant as a function of frequency. Furthermore, it is shown the numerical results can be analyzed by coupled-mode theory. |
| Keywords: | 42.70.Qs 42.79.Fm |
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