thank you my friends,i will explain in brief what i want to do :
1- using matlab to select the best of the mentioned polymer fiber and my calculations depend on sellmeier equation which indicate the relationship between the index of refraction and wavelength.
i have a missing parameter value called dispersion profile value which depend on the derivative of absolute index difference with respect to wavelength so i need the value of this parameter for the mentioned polymer fibers .
2-after choosing the best i will design this fiber using optifiber.
3-then i will use optisystem for my model.
so i need the values of dispersion profile parameter values for different types of polymer fibers also their different sellmeier coefficients .
thank you again for responding to me
i need your help as soon as possible.