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Measured transmission spectra of a woodpile structure with for normal incidence, polarization (dotted line), and for oblique incidence ; in (solid black line) and polarization (solid gray line), respectively. All spectra are normalized to transmission of the bare substrate (see discussion in the main text).
Gray-scale plot of the measured transmission (compare Fig. 1) vs angle of incidence and wavelength. (a) polarization, (b) polarization.
Gray-scale plot of the calculated transmission vs angle of incidence and wavelength. The woodpile structure corresponds to that of the experiment (Fig. 2). (a) polarization, (b) polarization.
Calculated band structure of the woodpile structure investigated in Figs. 1–3. The gray areas are guides to the eye, aiming at simplifying the comparison with Figs. 2 and 3. The inset illustrates characteristic propagation directions.
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