吸收对对称性一维三元光子晶体能带的影响

利用复折射率及传输矩阵理论,研究了光子晶体的吸收对对称性一维三元光子晶体能带及透射峰的影响,研究表明:在反射波中,禁带的反射率随消光系数的增加而迅速降低,当k增加到0.005时,禁带边缘模糊,不存在明显的禁带;在透射波中,随着消光系数的增大,禁带边缘逐渐模糊,当k增加为0.003时,透射率降为0.35;光子晶体的消光系数对禁带内透射峰的透射率有着明显的影响,当k为0.001时,透射率下降到0.15,随着消光系数的增加,透射峰的半峰全宽随之增加,但对透射峰的中心波长没有影响.

The influence of adsorption on one - dimensional triple - sects photonic crystal band symmetrical structure

Abstract: Computer refractive index and transfermatrix theory are used to study the influence of adsorp tion on one - dimensional trip le - sects photonic crystalwith symmetry and transmission peak. The results show that, n reflected wave, the reflectivity of forbid2 den band decreaseswith the increase of extinction coefficient, when k increases to 0. 005, the border of forbidden band is vague and there is no obvious forbidden band, in transmission wave, with the increases of extinction coefficient, the border of forbidden band is gradually vague, when k increases to 0. 003, reflectivity decreases to 0. 35. Photonic crystal extinction coefficient has obvious influence on transmission peak in forbidden band, when k equals to 0. 001, transmission index decreases to 0. 15, with the increase of extinction coefficient, the width of semi - peak of transmission peak increases but there is no influence on central wave length of transmission peak.