Precision enhancement for optical waveguide analysis
- 1 January 1997
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in Journal of Lightwave Technology
- Vol. 15 (2) , 391-396
- https://doi.org/10.1109/50.554393
Abstract
The analytical form of the discretization error in modal calculations using the finite-difference method (in both one and two dimensions) has been derived. Based upon this knowledge, a linear extrapolation scheme is devised such that highly accurate propagation constants can be extracted from calculation results using coarse grids. Efficiency and precision are both improved significantly as a result.Keywords
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