以三角晶格空气环光子晶体线波导结构为研究对象,分析了空气环散射元内半径Rin和外半径Rout对波导慢光特性的影响,结果表明Rin/Rout的值在0.15~0.35之间时,能够获得宽带慢光,而且邻近波导两侧首排空气环的外半径Rfout相对于其内半径Rfin对慢光特性的影响更大。当波导两侧首排散射元为空气孔时有利于慢光群速度的降低、为空气环时有利于获得更宽的带宽。当波导两侧首排散射元由空气孔和空气环交替排布构成新型非对称线缺陷波导结构,同时具有了两类散射元的优点,它的群速度与带宽特性优于对称型波导,实现了群速度为0.0086 c、波长范围为6.588 nm的低色散慢光。 Taking the triangular lattice air-ring photonic crystal waveguide structure as the research object, the influence of the radius Rin and the outer radius Rout of the air-ring scattering element on the slow-light characteristics of the waveguide is analyzed. The results show that when Rin / Rout is between 0.15 and 0.35 , A broadband slow light can be obtained and the outer radius Rfout of the first row of air rings adjacent to both sides of the waveguide has a greater impact on the slow-light properties relative to its inner radius Rfin. When the first row of scattering elements on both sides of the waveguide are air holes, it is beneficial to reduce the speed of the slow light group, and it is beneficial to obtain a wider bandwidth for the air ring. When the first row of scattering elements on both sides of the waveguide are alternately arranged by the air holes and the air ring to form a new type of asymmetric linear defect waveguide structure, and has the advantages of two types of scattering elements, and its group velocity and bandwidth characteristics are better than that of the symmetric waveguide, achieving Low dispersion, slow light with a population velocity of 0.0086 c and a wavelength range of 6.588 nm.