deletions | additions       diff --git a/section_Theory_subsection_Mach_Zehnder__.tex b/section_Theory_subsection_Mach_Zehnder__.tex  index 2be78d6..e7bf713 100644  --- a/section_Theory_subsection_Mach_Zehnder__.tex  +++ b/section_Theory_subsection_Mach_Zehnder__.tex 
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$I_{0}=\frac{I_{i}}{2}\left\{ 1+\cos\left(\beta\Delta L\right)\right\} $  \end{center}  \begin{center}  $FSR=\frac{\lambda^{2}}{\Delta Ln_{g}}$  \end{center}  \subsection{Optical filter using two Mach-Zehnder interferometers}  %From Agarwal pp. 293 
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