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\begin{document}
    \chapter{Mode Coupling}\label{chp:modecoup}
        \begin{figure}
            \centering
            \begin{subfigure}{.5\textwidth}
                \includegraphics[width=\textwidth]{LumericalModeProfile2D}
                \caption{Fundamental mode $|E|$ with Lumerical}
            \end{subfigure}%
            \begin{subfigure}{.5\textwidth}
                \includegraphics[width=\textwidth]{LumericalModeProfileLinear}
                \caption{The $|E_z|$ field with Comsol}
            \end{subfigure}
            \caption{Mode profiles of gold stripe waveguides at $\lambda$ = 1550 nm}\label{fig:StripeMode}
        \end{figure}

        The aim of this integrated device is to focus different wavelengths normally incident on the nanoslit/$\Delta$-antenna pattern to different spatial locations and have them coupled to the waveguides there as illustrated in \ref{fig:IllustrateCoupling}.

        \section{Nanoslits}
            \parbox{\textwidth}{First we deal with the nanoslits by selecting focal points in the NIR regime to conform with our optical setup. The position of the focal points and the focused wavelengths are given in \ref{tab:NanoslitFocii} and the resulting patterns are shown in \ref{fig:NanoIntensityCompare}. For both cases, that is the iteration with the waveguides and without the waveguides, the number of iterations is 40.}% parbox prevents unwanted pagebreaks
            \begin{table}
                \centering
                \begin{tabular}{|c|c|c|c|}
                    \hline
                    & Focal Point 1 & Focal Point 2  & Focal Point 3 \\
                    \hline
                    x(nm) & 0 & 0 & 0 \\
                    \hline
                    y(nm) & -4000 & 0 & 4000 \\
                    \hline
                    $\lambda(\mathrm{nm}) $& 1400 & 1500 & 1600 \\
                    \hline
                \end{tabular}
                \caption{Focus parameters used for nanoslits}\label{tab:NanoslitFocii}
            \end{table}
\end{document}