1. Nanyang Technological University, Center of Optical Fibre Technological University, School of Electrical and Electronic Engineering, 50 Nanyang Avenue, 639798 SingaporebNorthumbria University, Optical Communication Research Group, Faculty of Engineering a
2. Northumbria University, Optical Communication Research Group, Faculty of Engineering and Environment, Newcastle upon Tyne NE1 8ST, United Kingdom
3. Nanyang Technological University, Center of Optical Fibre Technological University, School of Electrical and Electronic Engineering, 50 Nanyang Avenue, 639798 Singapore
4. Institut Fresnel, Ecole Centrale Marseille, CNRS UMR 7249, Marseille, France
5. Czech Technical University, Department of Electromagnetic Field, Prague 166 27, Czech Republic
6. Northumbria University, Optical Communication Research Group, Faculty of Engineering and Environment, Newcastle upon Tyne NE1 8ST, United KingdomeUniversity of Peloponnese, Department of Informatics and Telecommunications, Terma Karaiskaki, Tripolis, Arca