MEEP is an open-source FDTD electromagnetic simulator. This notebook demonstrates using the gsim.meep API to run an S-parameter simulation on a photonic Y-branch.
Requirements:
- UBC PDK:
uv pip install ubcpdk - GDSFactory+ account for cloud simulation
Load a pcell from UBC PDK¶
Configure and run simulation¶
from gsim import meep
sim = meep.Simulation()
sim.geometry.component = c
sim.geometry.z_crop = "auto"
sim.materials = {"si": 3.47, "SiO2": 1.44}
sim.source.port = "o1"
sim.source.wavelength = 1.55
sim.source.bandwidth = 0.01
sim.source.num_freqs = 11
sim.monitors = ["o1", "o2", "o3"]
sim.domain.pml = 1.0
sim.domain.margin = 0.5
sim.domain.margin_z_above = 0.5
sim.domain.margin_z_below = 0.5
sim.domain.port_margin = 0.5
sim.solver.resolution = 20
sim.solver.stopping = "dft_decay"
sim.solver.max_time = 200
sim.solver.stopping_threshold = 1e-3
sim.solver.stopping_min_time = 100
sim.solver.subpixel = False
sim.solver.simplify_tol = 0.01
sim.solver.save_geometry = True
sim.solver.save_fields = True
sim.solver.save_animation = True
sim.solver.verbose_interval = 5.0
print(sim.validate_config())
Stack validation: PASSED
Warnings:
- No stack configured. Will use active PDK with defaults.
Run simulation on cloud¶
Uploading simulation...
done
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Extracting results.tar.gz...
Downloaded 273 files to /home/runner/work/gsim/gsim/nbs/sim-data-meep-bf598f74/results
