deletions | additions       diff --git a/Finally_with_the_effective_index__.tex b/Finally_with_the_effective_index__.tex  index 5ee5f4e..22b36f5 100644  --- a/Finally_with_the_effective_index__.tex  +++ b/Finally_with_the_effective_index__.tex 
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Finally, with After  the effective index information, information was obtained using simulation, the next step is to get a model based on  a second order polynomial fit can be obtained. fit.  As it was mentioned in the course, we can use MATLAB or Lumerical scripting tool to obtain the fit parameters. For the quasi-TE mode the effective index approximates to: \begin{center}  $n_{eff} = 2.44763 - 1.12907(\lambda - 1.55) - 0.0354547(\lambda - 1.55)^2$ 
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\end{center}     In the following sections, the responses of some MZI designs will be obtained.