基于多层对称薄膜的反射镜作用,设计了一种工作波长位于1550nm附近的基于周期性多层膜的光子晶体光波导。由平板波导的相关理论分析了波长在1515~1587nm范围内电磁波在波导中的传输性质。研究表明TE模和TM模在波导都是基模传输,其功率约束因子(Γ)限制在0.99~1之间,说明波导近乎完全将光波限制在其中传输。在控光能力上这种结构要比普通的三层薄膜波导更具优势。利用周期性多层膜的光子带隙结构,可以构造具有超低损耗的全向带隙介质光波导。 Based on the mirror effect of multilayer symmetric thin film, a periodic multilayer film-based photonic crystal optical waveguide with an operating wavelength around 1550 nm was designed. Based on the theory of slab waveguide, the transmission properties of electromagnetic wave in waveguide are analyzed in the range of 1515 ~ 1587 nm. The results show that both the TE mode and the TM mode are fundamental mode transmission in the waveguide. The power constraint factor (Γ) is limited to between 0.99 and 1, which shows that the waveguide almost completely limits the transmission of light. In the light control capability of this structure than the average three-tier thin film waveguide more advantages. Using periodic multilayer photonic bandgap structures, it is possible to construct omnidirectional band gap dielectric optical waveguides with ultra-low loss.