Abstract
The relation between the dispersion characteristics of W-profile broadband dispersion compensation fiber and its structural parameters is simulated using the finite element method in this paper. It is found that it is the depressed cladding that makes dispersion slope negative and increasing the waveguide dispersion to the total dispersion. There exists an optimum depressed cladding width, which gives the highest negative dispersion or maximum relative dispersion slope. Any modifications of the structural parameters, which make fiber operating close to cutoff, will result in large negative dispersion, high negative dispersion slope and high relative dispersion slope.
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