Overcoming the Multi-wavelength FDTD Challenge
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Overcoming the Multi-wavelength FDTD Challenge
With improvements to algorithm architecture and computing technologies boosting the speed of the finite-difference time-domain (FDTD) technique, it is increasingly applied to a diverse range of application areas. Part of the appeal of FDTD is that, as a time-domain technique, a single simulation can be used to provide simulation results at many frequency points. While this appears to provide the ability to analyze and optimize device design across a wide wavelength range, this is only true to the extent that the models used to describe the dispersive nature of the constituent materials are themselves accurate over the wavelength range of interest. A significant multi-wavelength challenge results from the fact that accurate broadband simulation requires accurate broadband material models that are computationally efficient.
