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first introduction of optimization with respect to geometrical parameters, instead of phase. This requires an additional differentiation layer that is computed directly from unit cell numerical data.

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Edoardo Vergerio
2026-10-13 09:19:04 +02:00
parent 441510e246
commit 7a71b43b72
2 changed files with 391 additions and 214 deletions
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single_converter_symm.py
+16 -2
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@@ -25,7 +25,7 @@ d = np.array([d0, d1, d2])
ms_max_available_diameter = 122 #[um]
output_fiber_core_diameter = 19 #[um]
opt_max_eval = 140
opt_max_eval = 1000
space_grid = pid.SpaceGrid(
side_pixels=N,
@@ -60,6 +60,19 @@ targets = [pid.Target(input_field=target_fields[i],
#targets[0].plot2D(plot_zoom_x=38,plot_zoom_y=38,choose_quantity='amplitude', save_name='results/target_field')
#import unit cell data
unit_cell_diameters_wvl_1530 = np.load("unit_cell/unit_cell_center_1530_h900nm_res50_wvl_diameters.npy")
unit_cell_diameters_wvl_1550 = np.load("unit_cell/unit_cell_center_1550_h900nm_res50_wvl_diameters.npy")
unit_cell_diameters_wvl_1570 = np.load("unit_cell/unit_cell_center_1570_h900nm_res50_wvl_diameters.npy")
unit_cell_phases_wvl_1530 = np.load("unit_cell/unit_cell_center_1530_h900nm_res50_wvl_mode_phase.npy")
unit_cell_phases_wvl_1550 = np.load("unit_cell/unit_cell_center_1550_h900nm_res50_wvl_mode_phase.npy")
unit_cell_phases_wvl_1570 = np.load("unit_cell/unit_cell_center_1570_h900nm_res50_wvl_mode_phase.npy")
#construct the UnitCell objects
unit_cell_1530 = pid.UnitCell(wavelength=1.530, tune_param=unit_cell_diameters_wvl_1530, sim_phase=unit_cell_phases_wvl_1530)
unit_cell_1550 = pid.UnitCell(wavelength=1.550, tune_param=unit_cell_diameters_wvl_1550, sim_phase=unit_cell_phases_wvl_1550)
unit_cell_1570 = pid.UnitCell(wavelength=1.570, tune_param=unit_cell_diameters_wvl_1570, sim_phase=unit_cell_phases_wvl_1570)
unit_cells_list = [unit_cell_1530, unit_cell_1550, unit_cell_1570]
#setup the simulation instance
simulation = pid.Simulation(
sources=sources,
@@ -74,8 +87,9 @@ simulation.set_optimization(
opt_param_max=1,
ms_max_avail_diameter=ms_max_available_diameter,
phase_mask_init_size=output_fiber_core_diameter/3,
unit_cells=unit_cells_list,
opt_max_eval=opt_max_eval,
conic_filter_radius=1.0,
#conic_filter_radius=1.0,
)
simulation.run()