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1. (WO2017155001) OPTICAL CROSS-CONNECT DEVICE

Pub. No.:    WO/2017/155001    International Application No.:    PCT/JP2017/009333
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Thu Mar 09 00:59:59 CET 2017
IPC: H04B 10/27
H04Q 3/52
Applicants: NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY
国立大学法人名古屋大学
Inventors: SATO Ken-ichi
佐藤 健一
HASEGAWA Hiroshi
長谷川 浩
MORI Yojiro
森 洋二郎
SATO Kosuke
佐藤 晃輔
Title: OPTICAL CROSS-CONNECT DEVICE
Abstract:
An OXC device of route-and-select architecture in the prior art requires 120 1×9 WSSs in the entire device when the number of ports is 20. An OXC device of route-and-select type exceeding 20 ports requires a large quantity of expensive WSSs and lacks feasibility in terms of cost. Expansion matched to the extent of increase in traffic of a node is impossible, there is a lack of flexible scalability, and reasonable network operation including economy is difficult. An OXC device of the present disclosure uses smaller-scale WSSs than in prior art and internally connects the WSSs from a different viewpoint than in prior art, irrespective of the number of input ports and the number of output ports of the device, thereby making it possible to greatly reduce the cost of the device. Furthermore, this OXC device can be expanded flexibly, economically, stepwise only as necessary, and without limits in accordance with the initial state of traffic and subsequent increases thereto.