Research on solitons in optical fibers in Cameroon

One of the most interesting fields in which Cameroonian specialists on nonlinear physics are working is the analysis of conditions of very sharp optical solitons propagation in optical fibers. This leads to high order Ginzburg-Landau equations leading to different solutions and different modulational instability conditions. These interesting contributions will be presented explaining the modelling process, the mathematical and numerical methods. The shapes of the different solitons will be presented and discussed. Parallel to that works are also conducted using PTS structure in order to find electronic devices. The results on a network of optical waveguides with an embeded PTS dimer/trimer seen as impurity. It is demonstrated how an electrical line with an electronic PTS dimer used as impurity reveals such interesting similar phenomena (transparency, mirror, ...). These results suggest implementations of electronic devices équivalent to optical ones.