1. National Institute of Information and Communications Technology, Koganei, Japan
2. University of L'Aquila, L'Aquila, Italy
3. Fraunhofer Institute for Telecommunications -- Heinrich-Hertz-Institute, Berlin, Germany
4. Finisar Australia, New South Wales, NSW, Australia
5. Prysmian Group, Milano, Italy
6. Nokia Bell Labs, New Jersey, NJ, USA