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This section describes the settings related to parameter sweeps.
Parameter sweeps are typically used to determine the impact of specific parameters on simulation results, which facilitates the identification of optimal parameter solutions or critical structural parameters, aligning with the desired objectives. During the sweep process, the software runs simulations based on the target values specified in a parameter sweep and finally saves the project files and results generated from each simulation. Users are allowed to view all result data after the sweep process is completed and select the best values according to their specific needs. With the help of pre-processing and post-processing scripts, the software enables more complex parameter sweeps during model creation.
To add a parameter sweep, you can switch from the Objects tree to the Optimizations and sweeps, right-click a blank area on the page, and select Create new parameter sweep. After addition, right-click on the added sweep and select Edit to enter the editing interface, where specific settings can be configured as follows:
The General tab allows users to define the name for a sweep. Note that multiple sweeps with the same name are forbidden under a single project.
| Name | Description |
|---|---|
| Name | Define the name for a sweep. |
The Simulation method tab displays the solver currently in active.
| Name | Description |
|---|---|
| Active solver | Display the solver that is currently active. |
The Resources tab is used to configure computing resources, and allows users to select optimal computing resources for sweeps based on their computer specifications.
| Name | Description |
|---|---|
| Maximum simulation threads of parallel | The maximum number of threads for parallel execution, which is used to set the number of simulation models that can run simultaneously. |
The Parameters tab allows users to set the sweep parameter table. Please note that when setting up a non-nested parameter sweep, multiple parameters added simultaneously must have the same number of sample points.
| Name | Description |
|---|---|
| Parameters type | Ranges: The sweep range is defined from the start value to the stop value, and all sweep values within the sweep range are linearly spaced. Values: The user is allowed to define each sweep point, and the sweep values within the sweep range can be non-linear. |
| Number of points | Set the number of data points for a specific parameter in the current sweep. |
| Name | The user-defined name for a sweep parameter. |
| Parameters | Select the parameters to be swept. |
| Type | The type of the selected parameter. |
| Start/Stop | When Ranges is selected as Parameters type, set initial value of the parameter range. |
| Value_1, Value_2, ... | When Values is selected as Parameters type, set each parameter value. |
| Units | Set a unit for any parameter type with a unit. |
| Add | Add a parameter. |
| Remove | Remove a parameter. |
The Results tab allows users to set the attributes associated with results.
| Name | Description |
|---|---|
| Name | Define the name of a result. |
| Result | The swept result. |
| Vector operation | Post-process the result (e.g., summing and averaging). |
| Add | Add a result. |
| Remove | Remove a result. |
To run a parameter sweep, you need to right-click the added sweep and click Run.
After the sweep process is completed, you can right-click the finished sweep and click Data visualizer to view the sweep results.
Photonic Crystal (PC) is a dielectric structure with a periodic variation in its permittivity. This periodic variation prevents light at specific frequencies from propagating in the PC to form a photonic band-gap. In this case, a sweep for different Bloch wave vectors has been performed in order to obtain the mode that lasts stably under each wave vector. For details, see Band Analysis.
