@article{oai:nagoya.repo.nii.ac.jp:00012108, author = {Sato, Ken-ichi}, journal = {International Conference on Photonics in Switching (PS '09)}, month = {Sep}, note = {The inefficiencies of current IP technologies will soon become pressing problems. Extension of optical layer technologies and coordination with new transport protocols will be critical to resolve these problems. Recent technical advances in several fields are highlighted.}, pages = {1--4}, title = {Future directions in optical networking technology development — Optical fast circuit switching and multilevel optical routing}, year = {2009} }