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1. 发明授权

US09641246B2 Optical monitoring in an optical communications network 有权
公开(公告)号：US09641246B2
公开(公告)日：2017-05-02
申请号：US14898225
申请日：2013-06-18
申请人： Telefonaktiebolaget L M Ericsson (publ)
发明人： Gianmarco Bruno , Alberto Deho
IPC分类号： H04B10/079 , H04B10/07 , H04B10/85
CPC分类号： H04B10/079 , H04B10/07 , H04B10/85
摘要： A communications network element comprises a network element input, a network element output and a monitoring port. An optical splitting device taps a portion of an input optical signal or an output optical signal to form a first signal. An optical signal transforming apparatus applies an optical transfer function to the first signal to form the optical monitoring signal applied to the monitoring port. The optical transfer function preserves the spectral property of the first signal and applies a time-domain obfuscation to the tapped signal. The optical signal transforming apparatus comprises an optical through signal path, an optical splitting device positioned in the optical through signal path and an optical combining device positioned in the optical through signal path. An optical feedback path is connected to the optical splitting device and the optical combining device. The optical splitting device is arranged to tap off a portion of a signal passing along the through signal path and apply it to the feedback path, and the optical combining device is arranged to recombine at least part of the tapped portion of the signal with the signal passing along the through signal path.

2. 发明申请

US20160149638A1 OPTICAL MONITORING IN AN OPTICAL COMMUNICATIONS NETWORK 有权
标题翻译：光通信网络中的光学监控
公开(公告)号：US20160149638A1
公开(公告)日：2016-05-26
申请号：US14898225
申请日：2013-06-18
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
发明人： Gianmarco Bruno , Alberto Deho
IPC分类号： H04B10/079
CPC分类号： H04B10/079 , H04B10/07 , H04B10/85
摘要： A communications network element comprises a network element input, a network element output and a monitoring port. An optical splitting device taps a portion of an input optical signal or an output optical signal to form a first signal. An optical signal transforming apparatus applies an optical transfer function to the first signal to form the optical monitoring signal applied to the monitoring port. The optical transfer function preserves the spectral property of the first signal and applies a time-domain obfuscation to the tapped signal. The optical signal transforming apparatus comprises an optical through signal path, an optical splitting device positioned in the optical through signal path and an optical combining device positioned in the optical through signal path. An optical feedback path is connected to the optical splitting device and the optical combining device. The optical splitting device is arranged to tap off a portion of a signal passing along the through signal path and apply it to the feedback path, and the optical combining device is arranged to recombine at least part of the tapped portion of the signal with the signal passing along the through signal path.
摘要翻译：通信网元包括网元输入，网元输出和监控端口。光分路装置抽出一部分输入光信号或输出光信号以形成第一信号。光信号变换装置对第一信号应用光传递函数，以形成施加到监视端口的光监视信号。光学传递函数保留第一个信号的光谱特性，并对点火信号施加时域混淆。光信号变换装置包括光通信信号路径，位于光通信信号路径中的光分路装置和位于光通信信号路径中的光合成装置。光学反馈路径连接到光分路装置和光学组合装置。光分路装置被布置成分离沿着通过信号路径的信号的一部分并将其施加到反馈路径，并且光学组合装置被布置成将信号的抽头部分的至少一部分与信号沿着通过信号路径传递。

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