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Properties of Zero Dispersion Wavelengths in Silica Strands and Photonic Crystal Fibres |
| ZHANG De-Sheng;SHENG Qiu-Qin;DONG Xiao-Yi |
| Institute of Physics Science, Nankai University, Tianjin 300071 |
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| Cite this article: |
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ZHANG De-Sheng, SHENG Qiu-Qin, DONG Xiao-Yi 2008 Chin. Phys. Lett. 25 993-995 |
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Abstract To design and calculate the zero-dispersion wavelength is one of the important aspects for highly nonlinear photonic crystal fibres. By using the air filling fraction f defined as f= (6d)/(2πΛ) here for the cladding effective index, and the step effective index model, the relationship between the properties of chromatic dispersion and the two different structures has been analysed. It is pointed that the variation of the zero dispersion wavelength is insensitive to the core diameter change in one range of core diameter D, while keeping the air filling fraction f constant. In the other range of core diameter D, the
photonic crystal fibres have the best nearly-zero ultra-flattened dispersion. These properties are significant to the design of chromatic dispersion and zero dispersion wavelength in photonic crystal fibres.
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| Keywords:
42.81.-i
42.81.Bm
42.81.Dp
78.20.Bh
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Received: 10 October 2007
Published: 27 February 2008
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| PACS: |
42.81.-i
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(Fiber optics)
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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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78.20.Bh
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(Theory, models, and numerical simulation)
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