基于Mie散射理论和低浓度近似,对锗蛋白石类光子晶体中的光子定域化现象进行了研究,数值揭示了入射波长、散射体大小和基质折射率对定域化参量的影响规律.结果表明,在散射体浓度为10％,相对折射率大于3.8,在中红外区3～12 μm范围内出现了理想的定域化现象；随着入射波长的增大,定域化区所对应的散射体半径增大,定域化参量减小；同时,基质折射率的增大导致退定域化现象.
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