给出一种较为简便的全电极脊形波导的分析方法,即采用有效折射率方法把此金属包层脊形波导化成一个二维等效平板波导,然后利用微分法得到模的有效折射率满足的方程和吸收损耗系数的解析表达式.作为一个特例,用这种方法对SiO2全电极脊形波导光传输特性如光传播常数和损耗进行了计算,并得到一些有益的结论. A simpler method for the analysis of all-electrode ridge waveguide is given, that is, an effective refractive index method is adopted to convert the ridge of the metal cladding into a two-dimensional equivalent slab waveguide. Then, the effective refractive index of the mode is obtained by the differential method As well as the analytic expression of absorption loss coefficient.As a special case, this method is used to calculate the optical transmission characteristics of SiO2 full-electrode ridge waveguide, such as the light propagation constant and loss, and some useful conclusions are obtained.