利用传输矩阵法详细研究了形如(HL)kA(LH)k的含N个耦合缺陷一维光子晶体的透射相位特性.研究表明, k=0时,光子晶体的透射相移呈近线性变化；而k≥1时,透射相位曲线在整个禁带范围内呈阶梯变化,且在每个缺陷模附近透射相位随频率迅速改变,其相移量约等于π.当在光子晶体中引入非线性折射率材料时,折射率的微小改变将导致透射光产生π相移,而且此相移过程中透射率接近于零,这有利于减少动态啁啾对透射光信号的影响.光子晶体这种π透射相移特性可用于设计各种新型相位器件.根据这一原理,设计了全光开关及逻辑门并讨论了其工作原理.
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