All-optical networks and switching technologies for a 3D videoconference system with feeling of presence

New ultra-low latency optical transmission and switching technologies are discussed in this paper. This work, carried out within the VISION project framework, sets the basis for building an ultra-low latency network for a high-quality videoconference system capable to provide a real feeling of presence, including 3D representation. The need of a full-optical transport network to achieve this aim is justified along the paper. The appropriate evolution of the switching techniques from optical circuit switching to optical packet switching is reasoned and the challenges hindering this evolution are stated. At a lower level, the technologies and materials available to perform optical switching, fulfilling the specific requirements, are reviewed. We present initial scalability simulations of electro-optic switches and future research in this field is posed. Finally, in this paper we propose and explain a design of a large optical packet switch employing optical labels.