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Add ContourPath averaging option to dielectric subpixel #2297

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Add ContourPath averaging option to dielectric subpixel #2297

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1 change: 1 addition & 0 deletions CHANGELOG.md
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Original file line number Diff line number Diff line change
Expand Up @@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0

### Added
- New `LobeMeasurer` tool in the `microwave` plugin that locates lobes in antenna patterns and calculates lobe measures like half-power beamwidth and sidelobe level.
- New subpixel averaging option `ContourPathAveraging` applied to dielectric material boundaries.

### Changed

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2 changes: 2 additions & 0 deletions tidy3d/__init__.py
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Expand Up @@ -331,6 +331,7 @@

# subpixel
from .components.subpixel_spec import (
ContourPathAveraging,
HeuristicPECStaircasing,
PECConformal,
PolarizedAveraging,
Expand Down Expand Up @@ -623,6 +624,7 @@ def set_logging_level(level: str) -> None:
"Staircasing",
"VolumetricAveraging",
"PolarizedAveraging",
"ContourPathAveraging",
"HeuristicPECStaircasing",
"PECConformal",
"SurfaceImpedance",
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18 changes: 16 additions & 2 deletions tidy3d/components/subpixel_spec.py
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Expand Up @@ -39,7 +39,8 @@ class Staircasing(AbstractSubpixelAveragingMethod):


class PolarizedAveraging(AbstractSubpixelAveragingMethod):
"""Apply a polarized subpixel averaging method to dielectric boundaries.
"""Apply a polarized subpixel averaging method to dielectric boundaries, which
is a phenomenological approximation of :class:`.ContourPathAveraging`.

Note
----
Expand All @@ -51,7 +52,20 @@ class PolarizedAveraging(AbstractSubpixelAveragingMethod):
"""


DielectricSubpixelType = Union[Staircasing, PolarizedAveraging]
class ContourPathAveraging(AbstractSubpixelAveragingMethod):
"""Apply a contour-path subpixel averaging method to dielectric boundaries.

Note
----
The algorithm is based on:

A. Mohammadi, H. Nadgaran and M. Agio, "Contour-path effective
permittivities for the two-dimensional finite-difference
time-domain method", Optics express, 13(25), 10367-10381 (2005).
"""


DielectricSubpixelType = Union[Staircasing, PolarizedAveraging, ContourPathAveraging]


class VolumetricAveraging(AbstractSubpixelAveragingMethod):
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