deletions | additions       diff --git a/Design_parameters_item_Width_500__.tex b/Design_parameters_item_Width_500__.tex  index 0ab9597..cde4835 100644  --- a/Design_parameters_item_Width_500__.tex  +++ b/Design_parameters_item_Width_500__.tex 
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Design parameters: In this design proposal, a strip waveguide structure was chosen with the following dimensions:  \begin{enumerate}[a)]  \item Width = 500 nm and Height = 220 nm  Variable:  \item $\Delta L$ is the difference between \end{enumerate}  This basic structure will be used to build  thetwo waveguide  arms of the interferometer.  There are 5 different Mach Zhender Interferometer designs, two cascaded interferometer, the main  MZI designs.  I decided variable  to test the fiber couplers (TE/TM polarization) and Y-branch.  \begin{table}   \begin{tabular}{ c c c c c }  Device ID & Polarization & $L_1$ [$\mu m$] & $L_2$ [$\mu m$] & explore is   \item  $\Delta L$ [$\mu m$] \\   MZI1 & TE & 131.5 & 482.5 & 351 \\   MZI2 & TE & 131.5 & 162.5 & 31 \\   MZI3 & TE & 124.75 & 844.75 & 720 \\   MZI4 & TM & 131.5 & 162.5 & 31 \\   MZI5 & TM & 131.5 & 482.5 & 351 \\   MZI6 & TE & 70 & 190 & 120 \\   MZI7 & TE & 70 & 310 & 240 \\   \end{tabular}   \end{table}    A MZI device is comprised of two Y-branches, and waveguide segments either straight or with bends at certain radius. To input light and get the output response fiber grating couplers at specified polarizations are also used.  In this section, two types of simulations are presented. First a component simulation using Lumerical's MODE which corresponds  toobtain  the mode profile, effective and group indices for straight and bent waveguides are presented.  From those simulations mathematical models for difference between the two  waveguide dispersion are obtained.  The second type arms  ofsimulation is related to the MZI device. For that, we use Lumerical's Interconnect. The MZI devices will incorporate circuit models for the straight and bend waveguides, and the provided S-parameter models for  the Y-branch and the fiber grating couplers. interferometer.