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Simulation Objects

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screenshot_circle_zoom66In this section, the simulations objects are documented. There are several types of simulation objects in FDTD Solutions, MODE Solutions' varFDTD, MODE Solutions' FDE Solver and DEVICE. These objects are used to model the physical structure, define the solver region, any sources of light or doping/generation regions as well as monitors to collect data. The following sections provide detailed descriptions of each simulation object. Each simulation object can be added by clicking on the corresponding icon in the GUI.

 

For example, in the screen shot on the right, clicking on the icon_strucs_circ button would add a circle physical structure object.

Shared simulation objects

icon_structures Structures

This button will insert the shown structure primitive into the simulation. Pressing the arrow will show all available primitives.

icon_layer_builder_zoom90 Layer Builder

This button will add a Layer Builder group which will allow you to import GDS structure data and manipulate the layers of the structure from the graphical user interface.

icon_groups Groups

This button will add an analysis, container or structure group into the simulation. Pressing the arrow will allow selection of which group to add.

Optical simulation objects

icon_attribute Attributes

In FDTD Solutions and MODE Solutions, this button will insert the shown grid attribute into the simulation. Pressing the arrow will show all available primitives.

icon_components Components

In FDTD Solutions and MODE Solutions, this button will open the component object library window. Pressing the arrow will show common component categories that the library window can open with.

icon_simulation Simulation (Optical)

This button will insert simulation or mesh override regions. Pressing the arrow will allow selection of which simulation object to add.

icon_analysis Analysis

In FDTD Solutions and MODE Solutions, this button will open the component object library window. Pressing the arrow will show common analysis categories that the library window can open with.

icon_import Import (Optical)

This button will open a window for importing files from other programs. Pressing the arrow will allow selection of which kind of import.

icon_sources Sources

In FDTD Solutions and MODE Solutions, this button will insert different sources into the simulation. Pressing the arrow will allow selection of which source to add.

icon_monitors Monitors (Optical)

In FDTD Solutions and MODE Solutions, this button will insert various monitors into the simulation. Pressing the arrow will allow selection of which monitor to add.

Once the object is selected, pressing the EDIT icon_edit button will bring up a window where it is possible to modify the properties of the simulation object. The corresponding window for the circle object is shown below.

 

ref_fdtd_sim_obj_edit_circle_zoom68

 

TIP: In-field equation interpreter

The fields for numeric parameters can be used as a simple calculator. For instance, if you wish to set a value to the square root of 3 divided by e, just enter sqrt(3)/exp(1) into the field. For more information, see the Equation interpreter section.

 

Notes:

Structure objects support Multi-object editing. If you select multiple objects then click EDIT, you can edit properties that are common to all of the selected objects.

Monitors and sources have some global properties that apply to many objects. For example, the global source frequency range can be applied to all sources. The global properties can be edited with the GLOBAL PROPERTIES icon_mons_global button.

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