发明名称 |
Optical switch changeover controlling method, optical node device and optical switch system |
摘要 |
The present invention aims at providing an optical switch changeover controlling method, an optical node device and an optical switch system, capable of avoiding an interruption in an optical output power when changing over an optical path making use of a spatial optical switch arranged with a plurality of optical switch elements. To this end, the optical switch changeover controlling method according to the present invention enables an uninterrupted changeover of an optical path by conducting a reconnection of the optical path after establishing a state where the optical path before the changeover and the optical path after the changeover are simultaneously set concerning the spatial optical switch within the optical node device, when conducting a changeover of the optical path so as to transmit a client optical signal having been transmitted through a working ray path to a protective ray path such as in a case that a fault occurs in the working ray path.
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申请公布号 |
US6643422(B2) |
申请公布日期 |
2003.11.04 |
申请号 |
US20010797731 |
申请日期 |
2001.03.05 |
申请人 |
FUJITSU LIMITED |
发明人 |
KATAGIRI TORU;KUROYANAGI SATOSHI;NISHI TETSUYA;NAKAJIMA ICHIRO;MAEDA TAKUJI |
分类号 |
G02F1/313;H04B10/02;H04Q11/00;(IPC1-7):G02B6/35 |
主分类号 |
G02F1/313 |
代理机构 |
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主权项 |
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地址 |
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