FDFP Monitor Mode Expansion Setting

The section describes FDFP Monitor mode expansion setting.

Select FDFP monitor button in solver tab to create FDFP monitor in Composite Viewer, and set Mode expansion tab in popped-up editing window.

Please refer to FDFP for FDFP monitor mode expansion setting.

To use FDFP monitor mode expansion module, check Enable mode expansion tab to enable this module.

Name	Description
Enable mode expansion	Check this tab to enable mode expansion.
Multi-frequency field	Allow solving mode distributions at multiple frequency points. It is recommended to check this tab in broadband simulation projects.
Frequency points	Specify how many frequency points are used to calculate mode distribution. Increasing frequency points will increase simulation time. It is recommended to set fewer frequency points in initial check of simulation.

Please refer to rotation in mode expansion for Rotation setting.

Please refer to Select mode in mode expansion for Select mode setting.

Data Visualizer

Result data returned by FDFP monitor mode expansion includes:

Name	Description
Sourcepower	Relation between source power and frequency/wavelength.
E	Relation between electric field and frequency/wavelength.
H	Relation between magnetic field and frequency/wavelength.
P	Relation between Poynting vector and frequency/wavelength.
Power	Relation between power and frequency/wavelength.
T	Relation between transmissivity and frequency/wavelength.

Results of ModeExpansion tab in Data visualizer page include the following data:

Name	Description
N	Power of mode.
A_forward	Complex transmission coefficient of forward propagating mode.
A_backward	Complex transmission coefficient of backward propagating mode.
T_forward	Transmission power from input port to output port.
T_backward	Transmission power from output port to input port.