机译：
Indian Institute of Technology;
机译：RETRACTED ARTICLE: Waveguide dispersion characteristics of graded/linearly chirp type's refractive index profile of planar slab optical waveguide by using the modified finite element method
机译：Refractive-index profiling of single-mode graded-index optical planar waveguides by the inverse Wentzel-Kramers-Brillouin method with improved accuracy
机译：Buried ionhyphen;exchanged optical waveguides with refractive index profiles controlled by rediffusion
