1. Universiti Teknologi Malaysia, Infocomm Research Alliance, Lightwave Communications Research Group, 81310 Johor, MalaysiabHadhramout University, Department of Electrical Engineering, Faculty of Engineering, Hadhramout 8892, Yemen
2. Universiti Teknologi Malaysia, Infocomm Research Alliance, Lightwave Communications Research Group, 81310 Johor, Malaysia
3. Universiti Teknologi Malaysia, Infocomm Research Alliance, Lightwave Communications Research Group, 81310 Johor, MalaysiacTaiz University, Department of Communication and Computer Engineering, Faculty of Engineering and Information Technology, Taiz 9674,