Abstract
By analyzing the structure and properties of photonic crystal fiber (PCF), a method for calculating cladding-effective-index was proposed. Then, the influence of changing the diameters of fiber core and cladding air holes and the interval of cladding air holes on the single mode property, dispersion, attenuation characteristics and nonlinearity was analyzed. Single mode transmission was able to be achieved based on the designed PCF in large band width. Anomalous dispersion and the movement of zero dispersion point to the direction of short wavelength were both realized within short wavelength range. Furthermore, the changes of structure parameters in dissimilar layers led to different changes of the properties of PCF.
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