1、The parameters of the optical slab glass waveguide (refractive index and thickness of thin film) were measured by a new technique for using the prism coupler, i. e., leaky mode method.
3、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.
2、It was discovered that the characteristics of semi-leaky modes in doubly clad chiral optical fibers are very different from those in single clad chiral optical fibers.