为了获得最优化的光子晶体零色散慢光结构,在传统的光子晶体线缺陷波导结构的基础上,进一步在线缺陷上下两侧各引入了两排方形空气孔,并进一步优化了这两排方形孔的结构参数。通过平面波展开法(PWE)与时域有限差分法(FDTD)进行数值分析表明,这种新型结构的光子晶体波导能够在中心波长1550 nm处实现带宽为8.34 nm、平均群折射率为61、群速度色散(GVD)为104量级的理想宽带慢光。 In order to obtain the optimized zero-dispersion slow-light structure of photonic crystal, based on the traditional photonic crystal line-defect waveguide structure, two rows of square air holes are further introduced on the upper and lower sides of the line defect, and the two rows of square holes are further optimized The structural parameters. The numerical analysis by PWE and FDTD shows that the new photonic crystal waveguide can achieve a bandwidth of 8.34 nm at a central wavelength of 1550 nm and an average group refractive index of 61 Speed ​​Dispersion (GVD) is an ideal broadband slow-light of 104 orders of magnitude.