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1. 发明授权

US07274870B2 Apparatus and method for simultaneous channel and optical signal-to-noise ratio monitoring 有权
标题翻译：同步信道和光信噪比监测的装置和方法
公开(公告)号：US07274870B2
公开(公告)日：2007-09-25
申请号：US10461626
申请日：2003-06-14
申请人： San-Liang Lee , Chun-Liang Yang , Jui-Ting Wu , Ming-Hsiao Yang
发明人： San-Liang Lee , Chun-Liang Yang , Jui-Ting Wu , Ming-Hsiao Yang
IPC分类号： H04B10/08
CPC分类号： H04B10/0775 , H04B2210/078
摘要： An apparatus and method for simultaneous channel and optical signal-to-noise ratio (OSNR) monitoring is adapted to function in multi-channel wavelength-division-multiplexed (WDM) optical communication systems. A polarization controller is sequentially adjusted to perform the sequential polarization control with an optical signal. A polarization-selective electro-optic modulator acts as a polarizer and provides a signal dithering to improve the detection sensitivity. A beam splitter splits the dithered optical signal into two clusters. A photodetector receives the first cluster and measures the OSNR. An optical element receives the second cluster and monitors the channel wavelength of multiple channels. The apparatus can be packaged into a compact module and integrated on a chip. The channel monitoring covers a wide wavelength range and is tunable. The OSNR monitoring can be accurate over a wide dynamic range.
摘要翻译：同步信道和光信噪比（OSNR）监测的装置和方法适用于多信道波分复用（WDM）光通信系统中的功能。顺序地调整偏振控制器以利用光信号执行顺序偏振控制。偏振选择性电光调制器用作偏振器并提供信号抖动以提高检测灵敏度。分束器将抖动的光信号分成两个簇。光电检测器接收第一个集群并测量OSNR。光学元件接收第二簇并监视多个通道的通道波长。该设备可以封装成一个紧凑的模块并集成在芯片上。通道监控范围广泛，可调。 OSNR监控在宽动态范围内可以准确。

2. 发明授权

US07391970B2 Apparatus and method for monitoring optical signal-to-noise ratio 有权
标题翻译：用于监测光信噪比的装置和方法
公开(公告)号：US07391970B2
公开(公告)日：2008-06-24
申请号：US11026352
申请日：2004-12-30
申请人： San-Liang Lee , Chun-Liang Yang , Pei-Min Gong , Dar-Zu Hsu , Ming-Hsiao Yang , Yun-Lung Chou
发明人： San-Liang Lee , Chun-Liang Yang , Pei-Min Gong , Dar-Zu Hsu , Ming-Hsiao Yang , Yun-Lung Chou
IPC分类号： H04B10/08
CPC分类号： H04B10/07953 , H04B10/071 , H04B10/07957 , H04J14/02
摘要： An apparatus and a method for monitoring optical signal-to-noise ratio are provided. It can be applied in dense wavelength-division multiplexed networks to monitor the transmission quality of each optical channel. The apparatus comprises an optical circulator, a tunable optical filter, a dithering signal, a dithered reflector, and two photodiodes. It can be integrated on a single chip. The invention utilizes the dithering and reflection functions of the dithered reflector, and passes the signal and the noise through the tunable optical filter once and twice, respectively. When the tunable optical filter is scanning and filtering the whole spectrum, the signal and noise powers are measured by the two photodiodes, respectively. The OSNR for each optical channel is then calculated according to the signal and noise powers. It can monitor channel location, wavelength drift, and OSNR by including a wavelength locker to act as an optical channel analyzer.
摘要翻译：提供了一种用于监测光信噪比的装置和方法。它可以应用于密集的波分复用网络，以监测每个光通道的传输质量。该装置包括光循环器，可调光滤波器，抖动信号，抖动反射器和两个光电二极管。它可以集成在单个芯片上。本发明利用抖动反射器的抖动和反射功能，并将信号和噪声分别通过可调光滤波器一次和两次传递。当可调滤光器扫描和滤波整个光谱时，信号和噪声功率分别由两个光电二极管测量。然后根据信号和噪声功率计算每个光通道的OSNR。它可以通过包含一个波长锁定器作为光通道分析仪来监视通道位置，波长漂移和OSNR。

3. 发明申请

US20060098980A1 Apparatus and method for monitoring optical signal-to-noise ratio 有权
标题翻译：用于监测光信噪比的装置和方法
公开(公告)号：US20060098980A1
公开(公告)日：2006-05-11
申请号：US11026352
申请日：2004-12-30
申请人： San-Liang Lee , Chun-Liang Yang , Pei-Min Gong , Dar-Zu Hsu , Ming-Hsiao Yang , Yun-Lung Chou
发明人： San-Liang Lee , Chun-Liang Yang , Pei-Min Gong , Dar-Zu Hsu , Ming-Hsiao Yang , Yun-Lung Chou
IPC分类号： H04B10/08
CPC分类号： H04B10/07953 , H04B10/071 , H04B10/07957 , H04J14/02
摘要： An apparatus and a method for monitoring optical signal-to-noise ratio are provided. It can be applied in dense wavelength-division multiplexed networks to monitor the transmission quality of each optical channel. The apparatus comprises an optical circulator, a tunable optical filter, a dithering signal, a dithered reflector, and two photodiodes. It can be integrated on a single chip. The invention utilizes the dithering and reflection functions of the dithered reflector, and passes the signal and the noise through the tunable optical filter once and twice, respectively. When the tunable optical filter is scanning and filtering the whole spectrum, the signal and noise powers are measured by the two photodiodes, respectively. The OSNR for each optical channel is then calculated according to the signal and noise powers. It can monitor channel location, wavelength drift, and OSNR by including a wavelength locker to act as an optical channel analyzer.
摘要翻译：提供了一种用于监测光信噪比的装置和方法。它可以应用于密集的波分复用网络，以监测每个光通道的传输质量。该装置包括光循环器，可调光滤波器，抖动信号，抖动反射器和两个光电二极管。它可以集成在单个芯片上。本发明利用抖动反射器的抖动和反射功能，并将信号和噪声分别通过可调光滤波器一次和两次传递。当可调滤光器扫描和滤波整个光谱时，信号和噪声功率分别由两个光电二极管测量。然后根据信号和噪声功率计算每个光通道的OSNR。它可以通过包含一个波长锁定器作为光通道分析仪来监视通道位置，波长漂移和OSNR。

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