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公开(公告)号：US08428463B2
公开(公告)日：2013-04-23
申请号：US12777223
申请日：2010-05-10
IPC分类号： H04J14/02
CPC分类号： H04J14/0221 , H04B10/2941
摘要： Consistent with the present disclosure, a method and apparatus for providing a uniform spectral gain of an optical amplifier is provided. Namely, a “balancing” step is carried out in which an optical channel having the lowest power level input to an optical circuit, such as an dynamic gain equalizer (DGE), is assigned a zero “attenuation error” and is substantially un-attenuated by the DGE. The lowest power level optical signal does not require further attenuation and effectively serves as a reference power level, which the power levels of the remaining optical signals are set to. For example, remaining optical signals are assigned either positive or negative attenuation errors relative to the zero attenuation error based on optical signal input powers to the DGE and accumulated DGE attenuations over time. Those optical signals having a negative attenuation error are substantially unattenuated by the DGE, because such optical signals are adequately attenuated and do not require further attenuation. On the other hand, the DGE is controlled to attenuate those optical signals having positive attenuation errors to thereby flatten the output spectrum of the amplifier. In one example, interpolation techniques may be employed to control those portions of the DGE (e.g., attenuators or pixels) that do not receive a channel, such that adjacent pixels that receive channels may impart a desired amount of attenuation. In addition, further interpolation may be provided to appropriately control the DGE pixels, if the number of channels supplied to the DGE is different than the number of pixels of the DGE.
摘要翻译： 根据本公开，提供了一种用于提供光放大器的均匀光谱增益的方法和装置。 也就是说，执行“平衡”步骤，其中具有输入到诸如动态增益均衡器（DGE）的光电路的最低功率电平的光信道被分配零“衰减误差”并且基本上未衰减 由DGE。 最低功率电平光信号不需要进一步的衰减，并且有效地用作参考功率电平，其余的光信号的功率电平被设置为。 例如，基于对DGE的光信号输入功率和随时间的累积DGE衰减，剩余的光信号相对于零衰减误差分配正或负衰减误差。 具有负衰减误差的那些光信号由DGE基本上未衰减，因为这样的光信号被充分地衰减并且不需要进一步的衰减。 另一方面，控制DGE来衰减那些具有正衰减误差的光信号，从而使放大器的输出光谱变平。 在一个示例中，可以采用插值技术来控制不接收信道的DGE（例如，衰减器或像素）的那些部分，使得接收信道的相邻像素可以施加期望的衰减量。 此外，如果提供给DGE的信道数量不同于DGE的像素数，则可以进一步内插以适当地控制DGE像素。
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公开(公告)号：US20110274431A1
公开(公告)日：2011-11-10
申请号：US12777223
申请日：2010-05-10
IPC分类号： H04J14/02
CPC分类号： H04J14/0221 , H04B10/2941
摘要： Consistent with the present disclosure, a method and apparatus for providing a uniform spectral gain of an optical amplifier is provided. Namely, a “balancing” step is carried out in which an optical channel having the lowest power level input to an optical circuit, such as an dynamic gain equalizer (DGE), is assigned a zero “attenuation error” and is substantially un-attenuated by the DGE. The lowest power level optical signal does not require further attenuation and effectively serves as a reference power level, which the power levels of the remaining optical signals are set to. For example, remaining optical signals are assigned either positive or negative attenuation errors relative to the zero attenuation error based on optical signal input powers to the DGE and accumulated DGE attenuations over time. Those optical signals having a negative attenuation error are substantially unattenuated by the DGE, because such optical signals are adequately attenuated and do not require further attenuation. On the other hand, the DGE is controlled to attenuate those optical signals having positive attenuation errors to thereby flatten the output spectrum of the amplifier. In one example, interpolation techniques may be employed to control those portions of the DGE (e.g., attenuators or pixels) that do not receive a channel, such that adjacent pixels that receive channels may impart a desired amount of attenuation. In addition, further interpolation may be provided to appropriately control the DGE pixels, if the number of channels supplied to the DGE is different than the number of pixels of the DGE.
摘要翻译： 根据本公开，提供了一种用于提供光放大器的均匀光谱增益的方法和装置。 也就是说，执行“平衡”步骤，其中具有输入到诸如动态增益均衡器（DGE）的光电路的最低功率电平的光信道被分配零“衰减误差”并且基本上未衰减 由DGE。 最低功率电平光信号不需要进一步的衰减，并且有效地用作参考功率电平，其余的光信号的功率电平被设置为。 例如，基于对DGE的光信号输入功率和随时间的累积DGE衰减，剩余的光信号相对于零衰减误差分配正或负衰减误差。 具有负衰减误差的那些光信号由DGE基本上未衰减，因为这样的光信号被充分地衰减并且不需要进一步的衰减。 另一方面，控制DGE来衰减那些具有正衰减误差的光信号，从而使放大器的输出光谱变平。 在一个示例中，可以采用插值技术来控制不接收信道的DGE（例如，衰减器或像素）的那些部分，使得接收信道的相邻像素可以施加期望的衰减量。 此外，如果提供给DGE的信道数量不同于DGE的像素数，则可以进一步内插以适当地控制DGE像素。
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