- Free and open-source software under the GNU GPL.
- Complete scriptability via Python, Scheme, or C++ APIs.
- Simulation in 1d, 2d, 3d, and cylindrical coordinates.
- Distributed memory parallelism on any system supporting MPI.
- Portable to any Unix-like operating system such as Linux, macOS, and FreeBSD.
- Precompiled binary packages of official releases and nightly builds via Conda.
- Variety of arbitrary material types: anisotropic electric permittivity ε and magnetic permeability μ, along with dispersive ε(ω) and μ(ω) including loss/gain, nonlinear (Kerr & Pockels) dielectric and magnetic materials, electric/magnetic conductivities σ, saturable gain/absorption, and gyrotropic media (magneto-optical effects).
- Materials library containing predefined broadband, complex refractive indices.
- Perfectly-matched layer (PML) absorbing boundaries as well as Bloch-periodic and perfect-conductor boundary conditions.
- Exploitation of symmetries to reduce the computation size, including even/odd mirror planes and 90°/180° rotations.
- Subpixel smoothing for improving accuracy and shape optimization.
- Arbitrary current sources including a mode launcher.
- Frequency-domain solver for finding the response to a continuous-wave (CW) source.
- ε/μ and field import/export in the HDF5 data format.
- GDSII file import for planar geometries.
- Field analyses including Poynting flux, mode decomposition (for S-parameters), energy density, near to far transformation, frequency extraction, local density of states (LDOS), modal volume, scattering cross section, Maxwell stress tensor, arbitrary functions; completely programmable.
- Adjoint solver for sensitivity analysis and automated design optimization.
- Visualization routines for the simulation domain involving geometries, fields, boundary layers, sources, and monitors.
A time-domain electromagnetic simulation simply evolves Maxwell's equations over time within some finite computational volume, essentially performing a kind of numerical experiment. This can be used to calculate a wide variety of useful quantities. Major applications include:
- Transmittance and Reflectance Spectra — by Fourier-transforming the response to a short pulse, a single simulation can yield the scattering amplitudes over a broadband spectrum.
- Resonant Modes and Frequencies — by analyzing the response of the system to a short pulse, one can extract the frequencies, decay rates, and field patterns of the harmonic modes of lossy and lossless systems including waveguide and cavity modes.
- Field Patterns (e.g. Green's functions) — in response to an arbitrary source via a continuous-wave (CW) input (fixed-ω).
Meep's scriptable interface makes it possible to combine many sorts of computations along with multi-parameter optimization in sequence or in parallel.
Tutorial/Basics provides examples of the various kinds of computations.
This documentation is for the master branch of the source repository.
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Bug Reports and Feature Requests
For bug reports and feature requests, please file a GitHub issue.
Support and Feedback
If you have questions or problems regarding Meep, you are encouraged to query the mailing list.
Professional consulting services for photonic design and modeling including development of custom, turn-key simulation modules, training, technical support, and access to Meep in the public cloud via Amazon Web Services (AWS) are provided by Simpetus.