Guided and radiation modes of a graded-index waveguide with defocusing nonlinearity

Construction of refractive-index profile

Construction of refractive-index profiles of graded-index planar waveguides from effective indexes measured with different mode types and external refractive indexes

✍ J. Wei; X.-F. Xu; Z.-H. Kang; Y. Jiang; Y. Ding; J.-Y. Gao 📂 Article 📅 2005 🏛 John Wiley and Sons 🌐 English ⚖ 96 KB 👁 1 views

## Abstract A method is presented whereby the refractive‐index profile (RIP) can be reconstructed from sets of effective indexes measured with different mode types and external refractive indexes. Single‐mode waveguide RIP characterization can be easily realized using an index‐matching liquid at a