Effect of number of unit cells of fcc photonic crystal on property of band gaps
晶格数目对面心立方结构光子晶体带隙的影响

The effect of number of unit cells of the fcc photonic crystals on the property of the band gaps was investigated experimentally. Fcc photonic crystals with different numbers of cells were fabricated by using recording materials of different thickness in holography. Their transmitted spectra of the band gaps were measured. A guiding rule was given: a photonic crystal which can be practically used should have 50 unit cells at least.