@article{oai:nagoya.repo.nii.ac.jp:00012107, author = {Yamada, Y. and Hasegawa, H. and Sato, K.}, journal = {Conference on Optical Fiber Communication : incudes post deadline papers (OFC 2009)}, month = {Mar}, note = {We propose a novel hierarchical optical path network design algorithm ensuring wavelength path protection. The effectiveness of the waveband networks that adopt waveband or wavelength path protection are elucidated compared to single layer optical networks.}, pages = {1--3}, title = {Survivable hierarchical optical path networks employing waveband and wavelength path protection}, year = {2009} }