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1. 发明授权

US06751414B1 Circuit and channel assignment plan for optical transmissions 失效
标题翻译：光传输的电路和信道分配计划
公开(公告)号：US06751414B1
公开(公告)日：2004-06-15
申请号：US09111490
申请日：1998-07-07
申请人： Fiona Davies , Nigel Edward Jolley , Kevan Jones , Robert Keys , Maurice O'Sullivan
发明人： Fiona Davies , Nigel Edward Jolley , Kevan Jones , Robert Keys , Maurice O'Sullivan
IPC分类号： H04B1024
CPC分类号： H04B10/2972 , H04B10/2563
摘要： To support interleaving of optical channels and to provide sufficient isolation between such interleaved channels, a circulator (60-62) receives, on an optical fiber (16-18), a broadband signal containing a plurality of adjacent channels. The circulator selectively routes the broadband signal through a filter (64, 66) to isolate, on an individual basis, at least one desired channel. A filtered signal, corresponding to the at least one desired channel, is then output from the filter (64-66) and reflected back into the filter by a mirror (68-70) such that the at least one desired channel is subjected to a second filtering process that further improves isolation of the at least one desired channel. Following this second filtering process, the at least one desired channel is applied to the circulator (60-62) for re-inserting into the optical fiber (16-18), as illustrated in FIG. 6. To mitigate the effects of four-wave mixing in each bidirectional optical fiber, a channel assignment plan ensures that pairs of adjacent channels are assigned on a mutually exclusive basis to at least one of an up-link and a down-link direction.
摘要翻译：为了支持光信道的交织并且在这种交织信道之间提供足够的隔离，循环器（60-62）在光纤（16-18）上接收包含多个相邻信道的宽带信号。循环器选择性地将宽带信号路由通过滤波器（64,66），以在个别的基础上隔离至少一个期望的信道。然后从滤光器（64-66）输出对应于至少一个期望通道的滤波信号，并通过反射镜（68-70）反射回滤光器，使得至少一个期望的通道经受第二滤波处理，其进一步改善所述至少一个期望信道的隔离。在该第二滤波处理之后，将至少一个期望信道施加到循环器（60-62）以重新插入到光纤（16-18）中，如图6所示。为了减轻每个双向光纤中四波混频的影响，信道分配方案确保相邻信道的对在互斥的基础上被分配给上行链路和下行链路方向中的至少一个。

2. 发明授权

US07843630B2 Cascaded optical amplifier and control method thereof 有权
标题翻译：级联光放大器及其控制方法
公开(公告)号：US07843630B2
公开(公告)日：2010-11-30
申请号：US11970181
申请日：2008-01-07
申请人： André Van Schyndel , Kevan Jones , Selina G. Farwell
发明人： André Van Schyndel , Kevan Jones , Selina G. Farwell
IPC分类号： H01S3/00
CPC分类号： H01S3/06758 , H04B10/2935
摘要： A cascaded optical amplifier including a first optical amplifier and a second optical amplifier in cascaded arrangement is provided. Each of the first optical amplifier and the second optical amplifier has a respective input for receiving an optical signal, an output for outputting an amplified optical signal, and a control input for controlling the gain of the optical amplifier. The cascaded optical amplifier includes a sensor for sensing upstream of the input of the second optical amplier a signal relating to operation of the cascaded optical amplifier. In addition, the cascaded optical amplifier includes a controller for providing control signals to the respective control inputs of the first amplifier and the second amplifier, the controller providing the control signal to the second optical amplifier as a function of the sensed signal.
摘要翻译：提供了包括级联布置的第一光放大器和第二光放大器的级联光放大器。第一光放大器和第二光放大器中的每一个具有用于接收光信号的相应输入，用于输出放大的光信号的输出和用于控制光放大器的增益的控制输入。级联光放大器包括用于感测第二光放大器的输入的上游的传感器，该信号与级联光放大器的操作有关。此外，级联的光放大器包括用于向第一放大器和第二放大器的相应控制输入提供控制信号的控制器，该控制器根据感测到的信号向第二光放大器提供控制信号。

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