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March 21, 2026Biomedical Optics ExpressOpen Access

Snell-corrected electric parameter scaling for 2-D FDTD dispersion reduction in layered tissues

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Authors

AGAkram Gasmelseed

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Overview

Demonstrates dispersion reduction in layered tissues using Snell-corrected scaling, indicating improved accuracy in simulations.

Key Points

  • The aim is to reduce dispersion errors in 2-D FDTD simulations of layered biological tissues using a Snell-corrected scaling factor.
  • Derived a Snell-corrected scaling factor for modifying electric parameters in layered media.
  • Implemented modifications in 2-D TM z FDTD simulations under oblique incidence.
  • Used a fine-grid reference for error measurement and conducted a layer-by-layer analysis.
  • Reduced mean centerline | Ez | error from 30.7% to 25.4% at 0 degrees and from 37.9% to 26.3% at 90 degrees on the coarsest grid.
  • Limited benefit observed around 45 degrees incidence angle.

Cite This Study

Akram Gasmelseed (2026) studied this question.

synapsesocial.com/papers/69be34d16e48c4981c672fc5https://doi.org/10.1364/boe.590271
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