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Mode Exciting Properties of Photonic Crystal Fibres with the Optical Field Incident from a Single Mode Fibre |
| LIU Jian-Guo;XUE Li-Fang;KAI Gui-Yun;LIU Yan-Ge;ZHANG Wei-Gang;LI Yan;WANG Zhi;ZHANG Chun-Shu;DONG Xiao-Yi |
| Institute of Modern Optics, Nankai University, Tianjin 300071 |
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| Cite this article: |
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LIU Jian-Guo, XUE Li-Fang, KAI Gui-Yun et al 2006 Chin. Phys. Lett. 23 2125-2128 |
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Abstract We numerically investigate the mode exciting properties of photonic crystal fibres by using the beam propagation method when the optical field is input from a traditional single mode fibre. The results show that both the excited mode spectrum and the coupling-efficiency of each excited mode depend on the normalized pitch Λ/λ and the normalized hole-size Λ/λ. Furthermore, we obtain the boundary profile of the optimizing coupling-efficiency for the excited fundamental mode: the boundary (Λ/λ)* is linear to the boundary (d\λ)*. All of these will pave the way for smoothing applications of photonic-crystal fibres, such as splicing and designing photonic-crystal-fibre functional devices.
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| Keywords:
42.81.Bm
42.81.Dp
42.79.Gn
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Published: 01 August 2006
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| PACS: |
42.81.Bm
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(Fabrication, cladding, and splicing)
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42.81.Dp
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(Propagation, scattering, and losses; solitons)
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42.79.Gn
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(Optical waveguides and couplers)
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