@article{oai:nagoya.repo.nii.ac.jp:00024855,
 author = {Masaki, Niwa and Yojiro, Mori and Hiroshi, Hasegawa and Ken-Ichi, Sato},
 issue = {16},
 journal = {IEEE Photonics Technology Letters},
 month = {Aug},
 note = {We propose a novel optical node architecture that fully utilizes M × M wavelength-selective switches (WSSs), where the subsystem modular architecture is adopted and the M × M WSS ports are optimally allocated to inter-node fibers and add/drop fibers in accordance with the traffic distribution. The proposed architecture can accommodate the maximum incoming (outgoing) fiber number of 60 in USNET and 50 in the pan-European network where fiber-utilization efficiency offset is less than 3% compared with the completely unrestricted node. The number of necessary M × M WSSs is reduced by up to 26% compared with the previously proposed scheme.},
 pages = {1293--1296},
 title = {Large-Scale Optical Node Architecture Utilizing　M×M  Wavelength-Selective Switches Optimally Configured for Traffic Distribution},
 volume = {29},
 year = {2017}
}