# ABC Boundary

ABCBoundary is a one-way wave equation absorbing boundary condition.

This object corresponds to tidy3d.ABCBoundary (opens new window).

# Name

name: Optional unique name for the boundary.

  • Default: None

# Permittivity

permittivity: Effective permittivity used to determine the propagation constant.

  • Type: float number
  • Default: None

If set to None, the value is automatically inferred from the medium at the boundary and the central frequency of the source.

# Conductivity

conductivity: Effective conductivity used to determine the propagation constant.

  • Type: float number
  • Unit: S/um
  • Constraint: greater than or equal to 0
  • Default: None

If set to None, the value is automatically inferred from the medium at the boundary and the central frequency of the source.

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