A wide-angle finite-element beam propagation method
- 1 September 1996
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Technology Letters
- Vol. 8 (9) , 1208-1210
- https://doi.org/10.1109/68.531838
Abstract
A wide-angle finite-element beam propagation method based on the Pade approximation is developed. Considerable improvement in accuracy over the paraxial approximation is achieved with virtually no additional computation. In the present algorithm, the quadratic element, transparent boundary condition, adaptive reference index, and adaptive grid are effectively utilized.Keywords
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