Based on the vector wave theory, the formula for the calculation of propagation constants of guided modes or leaky modes in two-clad nonlinear uniaxial optical fibers is derived using the perturbation method.

• 基于严格的矢量波理论,用摄动法导出了计算双包层非线性单轴光纤导模或泄漏模传播常数的公式。