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Defect Modes in Multiple-Constituent One-Dimensional Photonic Crystals Examined by an Analytic Bloch-Mode Approach |
| SANG Hong-Yi; LI Zhi-Yuan;GU Ben-Yuan |
| Institute of Physics, Chinese Academy of Sciences, PO Box 603, Beijing 100080 |
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| Cite this article: |
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SANG Hong-Yi, LI Zhi-Yuan, GU Ben-Yuan 2005 Chin. Phys. Lett. 22 365-368 |
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Abstract Defect modes in one-dimensional photonic crystals (PCs) can be readily detected from the solution of the transmission spectra via the standard transfer-matrix method. We adopt an analytic Bloch-mode approach to examine this problem in terms of eigenmode solutions and investigate the dispersion behaviour of localized defect modes supported by a defect layer sandwiched within two symmetric semi-infinite PCs that are made from multiple constituents. The results show that the number of defect modes grows when the dielectric constant and width of the defect layer increase.
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| Keywords:
42.70.Qs
42.25.-p
78.20.-e
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Published: 01 February 2005
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| PACS: |
42.70.Qs
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(Photonic bandgap materials)
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42.25.-p
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(Wave optics)
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78.20.-e
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(Optical properties of bulk materials and thin films)
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