CAJ | 학술논문

【目的】推导三层对称膜（ABA）n结构可以等效为一层膜的情况。【方法】通过 MATLAB编程模拟得到了共振吸收峰，并通过改变组成光子晶体的材料的介质参数，分析了其对表面波的影响。【结果】给出等效光导纳和等效相厚度的公式，并讨论三层对称结构的表面波存在的色散关系。【结论】当 A，B层均为正折射率材料时，（ABA）n型光子晶体能带和禁带的位置和宽度随nB/nA 的比值而改变，且共振吸收峰的数目及位置也同样随之而改变。
【목적】추도삼층대칭막（ABA）n결구가이등효위일층막적정황。【방법】통과 MATLAB편정모의득도료공진흡수봉，병통과개변조성광자정체적재료적개질삼수，분석료기대표면파적영향。【결과】급출등효광도납화등효상후도적공식，병토론삼층대칭결구적표면파존재적색산관계。【결론】당 A，B층균위정절사솔재료시，（ABA）n형광자정체능대화금대적위치화관도수nB/nA 적비치이개변，차공진흡수봉적수목급위치야동양수지이개변。
Objective]Surface waves of triply-symmetric mode (ABA)n structural photonic crys-tals are studied.[Methods]The resonance absorption spectra of photonic crystal materials are obtained with the help of MATLAB method,and various dielectric parameters are adapted to analyze their influence on surface waves.[Results]The formulas of equivalent light admittance and phase thickness are deduced,and the dispersion relation with the surface waves of the tri-ply-symmetric structure are discussed.[Conclusion]When both layers A and B are positive in-dex material,the positions and widths of the permitted/forbidden band of (ABA)n photonic crystals,as well as the numbers of resonance peaks,are varied with the value ofnB/nA.