deletions | additions       diff --git a/section_Theory_subsection_Mach_Zehnder__.tex b/section_Theory_subsection_Mach_Zehnder__.tex  index 277d4b6..a147b71 100644  --- a/section_Theory_subsection_Mach_Zehnder__.tex  +++ b/section_Theory_subsection_Mach_Zehnder__.tex 
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The second scenario of the two-stage MZI filter is to have different path length differences at each stage. From the initial equation, this means that delays are different, therefore the transfer function becomes:  \begin{center}  $\left|H\left(\omega\right)\right|^{2} = \cos ^2 (\frac{\omega \tau_1}{2}) \cos ^2 (\frac{\omega \tau_2}{2}) = \frac{1}{4}[1 + \cos(\omega \tau_{1}] \tau_{1})]  [1 + \cos(\omega \tau_{2}] \tau_{2})]  $ \end{center}