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Achieving a high mode count in the exact electromagnetic simulation of diffractive optical elements.

07:00 EST 1st March 2018 | BioPortfolio

Summary of "Achieving a high mode count in the exact electromagnetic simulation of diffractive optical elements."

The application of rigorous optical simulation algorithms, both in the modal as well as in the time domain, is known to be limited to the nano-optical scale due to severe computing time and memory constraints. This is true even for today's high-performance computers. To address this problem, we develop the fast rigorous iterative method (FRIM), an algorithm based on an iterative approach, which, under certain conditions, allows solving also large-size problems approximation free. We achieve this in the case of a modal representation by avoiding the computationally complex eigenmode decomposition. Thereby, the numerical cost is reduced from O(N) to O(N log N), enabling a simulation of structures like certain diffractive optical elements with a significantly higher mode count than presently possible. Apart from speed, another major advantage of the iterative FRIM over standard modal methods is the possibility to trade runtime against accuracy.

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Journal Details

This article was published in the following journal.

Name: Journal of the Optical Society of America. A, Optics, image science, and vision
ISSN: 1520-8532
Pages: 377-385

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