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[ascl:2102.006] Lightbeam: Simulate light through weakly-guiding waveguides

Lightbeam simulates the 3D propagation of light through waveguides of arbitrary geometries. This code package is based off of the finite-differences beam propagation method, and employs a transverse adaptive mesh for extra computational efficiency. Also included are tools to simulate adaptive optics systems for use in conjunction with waveguides, useful in astronomical contexts for simulating coupling devices which transfer telescope light to the science instrument.

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