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    • 6. 发明授权
    • Reducing transients in an optical amplifier
    • 降低光放大器中的瞬变
    • US08908264B2
    • 2014-12-09
    • US13220369
    • 2011-08-29
    • Roman Länge
    • Roman Länge
    • H04B10/296
    • H04B10/296
    • A controller for reducing a transient variation of gain of an optical amplifier is disclosed. The controller includes a control circuit adapted to generate an electrical signal mimicking optical gain transient variation upon an abrupt change in input loading conditions. The electrical signal is applied to a variable optical attenuator disposed downstream of the active optical fiber of the optical amplifier. The control circuit can be realized in a variety of ways, but preferably it includes a logarithmic amplifier and a high-pass filter sequentially connected. The logarithmic amplifier is connected to an input tap/photodetector, and the high-pass filter is connected to the variable optical attenuator.
    • 公开了一种用于减小光放大器的增益的瞬时变化的控制器。 控制器包括控制电路,其适于在输入负载条件的突然变化时产生模拟光增益瞬态变化的电信号。 电信号被施加到设置在光放大器的有源光纤下游的可变光衰减器。 控制电路可以以各种方式实现,但优选地包括依次连接的对数放大器和高通滤波器。 对数放大器连接到输入抽头/光电检测器,高通滤波器连接到可变光衰减器。
    • 7. 发明申请
    • METHOD OF NETWORK NODE PERFORMANCE RANKING
    • 网络节点性能排序方法
    • US20140344874A1
    • 2014-11-20
    • US14280407
    • 2014-05-16
    • JDS Uniphase Corporation
    • Eric OLSEN
    • H04N17/00
    • H04N17/004H04N7/10
    • The invention relates to a method of determining maintenance priority for different portions of a CATV network. By calculating a health score for each node of the network based on a plurality of measurements performed downstream from the nodes, the nodes and the downstream segments of the network may be ranked according to their health score values, and the maintenance of the network segments may be prioritized based on the health ranking of the corresponding nodes. The health score for a node may be computed based on a plurality of tilt- and modulation-normalized frequency scans of the network signal.
    • 本发明涉及一种确定CATV网络的不同部分的维护优先级的方法。 通过基于从节点下游执行的多个测量来计算网络的每个节点的健康得分,网络的节点和下游段可以根据其健康得分值进行排名,并且网段的维护可以 根据相应节点的健康排名优先考虑。 可以基于网络信号的多个倾斜和调制归一化频率扫描来计算节点的健康得分。
    • 9. 发明授权
    • Dual polarization optical modulator using dual broadband multi-electrode weighted direct analog phase modulators
    • 双偏振光学调制器采用双宽带多电极加权直接模拟相位调制器
    • US08873896B1
    • 2014-10-28
    • US13901433
    • 2013-05-23
    • JDS Uniphase Corporation
    • Karl Kissa
    • G02F1/035G02F1/03
    • G02F1/0316G02F1/0327G02F1/225G02F2201/122H04B10/50
    • An electro-optical phase modulator, dual polarization modulator applying that modulator and a phase modulation method are disclosed. A waveguide in an electro-optical substrate has at least two electrodes for modulating the waveguide. Each electrode receives a sequential bit of a precoded digital input and forms a shifting line from a first input end through interaction lengths near the waveguide causing modulation, shifted lengths distal from the waveguide for avoiding modulating the waveguide and transitions between these lengths by shifting the electrode away from or towards the waveguide. At least one electrode has a shorter interaction length closer to the input than a longer interaction length of the same electrode. Each electrode's modulation strength is proportional to its total interaction length, which doubles for each electrode, producing well matched S21 electro-optical responses from 10 kHz to 50 GHz, when shifted to account for the doubling.
    • 公开了一种电光相位调制器,应用该调制器的双偏振调制器和相位调制方法。 电光基板中的波导具有用于调制波导的至少两个电极。 每个电极接收预编码数字输入的顺序位,并且通过波导附近的相互作用长度从第一输入端形成移位线,导致调制,远离波导的偏移长度,以避免通过移动电极来调制波导和这些长度之间的转换 远离或朝向波导。 至少一个电极具有比相同电极的较长相互作用长度更靠近输入的较短的相互作用长度。 每个电极的调制强度与其总相互作用长度成比例,每个电极加倍,产生了从10 kHz到50 GHz的良好匹配的S21电光响应,当转换到两倍时。