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We show how spatial dispersion can be used as a mechanism to customize thelongitudinal profiles of electric fields inside modulated wire media, using afast and remarkably accurate 1D inhomogeneous model. This customization givesfine control of the sub-wavelength behaviour of the field, as has been achievedrecently for transverse fields in simpler slotted-slab media. Our scheme avoidsany necessity to run a long series of computationally intensive 3D simulationsof specific structures, in order to iteratively converge (or brute-forcesearch) to an empirical `best-performance' design according to an abstractfigure-of-merit. Instead, if supplied with an `ideal waveform' profile, wecould now calculate how to construct it directly. Notably, and unlike most workon photonic crystal structures, our focus is specifically on the field profilesbecause of their potential utility, rather than other issues such as band-gapcontrol, and/or transmission and reflection coefficients.

Customized longitudinal electric field profiles: using spatial dispersion in dielectric wire arrays