Port¶

Type:	enum, or section
Range:	DetectPorts
Default:	-/-
Appearance:	optional

Use this section to specify the port $\Gamma$ where the mode overlaps are computed. Actually, the overlap computation is performed as an integration over the computational domain $\Omega_{\mathrm{m}}$ of the mode fieldbag with cross-section coordinates $\pvec{x}_\perp=[x,y,0]$ :

$\begin{eqnarray*} S_{i, j} & = & \frac{1}{2} \int_{\Omega_{\mathrm{m}}} \TField{R}^{-1}\VField{E_{\mathrm{s},j}}(\pvec{x}_0+ \TField{R} \pvec{x_\perp}) \times \VField{H_{\mathrm{m}, i}}(\pvec{x_\perp}) \end{eqnarray*}$

The port position $\pvec{x}_0$ is passed in Position and defines the position of the mode fieldbag origin in the scattering field coordinate system. The coordinate axis alignment $\TField{R}$ is specified in Rotation.