1. Kasdi Merbah University, Department of Electronics and Telecommunications, Ouargla
2. Badji-Mokhtar Annaba University, Laboratory L.P.S., Department of Physics, Faculty of Sciences, Anna
3. University of Shanghai for Science and Technology, College of Science, Photonics Research Laboratory
4. University of Constantine 1, Laboratory L.M.I., Department of Electronics, Faculty of Sciences of Te