deletions | additions       diff --git a/layout.md b/layout.md  index ae03e53..7ab74df 100644  --- a/layout.md  +++ b/layout.md 
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Design_parameters_item_Width_500__.tex  subsection_Straight_waveguide_simulation_results__.tex  Mode_Profile__.tex  Effective_index_and_group_index__.tex  subsection_Bent_waveguide_simulation_results__.tex  subsection_Mach_Zehnder_interferometer_circuit__.tex  subsection_Two_stage_MZI_optical__.tex