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    System and method for measuring power of optical signals carried over a fiber optic link
    2.
    发明授权
    System and method for measuring power of optical signals carried over a fiber optic link 失效
    用于测量通过光纤链路承载的光信号功率的系统和方法

    公开(公告)号：US07302178B2

    公开(公告)日：2007-11-27

    申请号：US11428987

    申请日：2006-07-06

    申请人： John C. Carrick ,  Paul C. Talmadge ,  Eric B. Saint Georges ,  Stuart D. Brorson

    发明人： John C. Carrick ,  Paul C. Talmadge ,  Eric B. Saint Georges ,  Stuart D. Brorson

    IPC分类号： H04B17/00

    CPC分类号： H04J14/0221 ,  H04B10/077 ,  H04B10/07955

    摘要： A pilot tone generator receives optical energy from an optical communication medium carrying a plurality of optical signals. Each optical signal carries data modulated at a unique wavelength and further modulated with a unique identification signal. The identification signal has an amplitude corresponding to an optical power of the associated optical signal. The pilot tone receiver detects each identification signal from the optical energy received and determines its corresponding amplitude. The pilot tone receiver calculates the optical power of each optical signal in the optical energy in response to the amplitude of the associated identification signal.

    摘要翻译： 导频音产生器从携带多个光信号的光通信介质接收光能。 每个光信号承载以独特波长进行调制的数据，并用唯一的识别信号进一步调制。 识别信号具有对应于相关联的光信号的光功率的幅度。 导频音接收器从接收的光能检测每个识别信号，并确定其对应的幅度。 导频音接收器响应于相关联的识别信号的幅度来计算光能中每个光信号的光功率。

    Method and apparatus for maintaining a pre-determined ratio of a pilot tone power and a mean optical output power of an optical signal
    3.
    发明授权
    Method and apparatus for maintaining a pre-determined ratio of a pilot tone power and a mean optical output power of an optical signal 失效
    用于维持导频音功率的预定比率和光信号的平均光输出功率的方法和装置

    公开(公告)号：US06931214B1

    公开(公告)日：2005-08-16

    申请号：US09567576

    申请日：2000-05-10

    申请人： John C. Carrick ,  Stuart D. Brorson ,  Eric J. Frankfort ,  Paul C. Talmadge ,  Roger P. Holmstrom

    发明人： John C. Carrick ,  Stuart D. Brorson ,  Eric J. Frankfort ,  Paul C. Talmadge ,  Roger P. Holmstrom

    IPC分类号： H04B10/02 ,  H04B10/08 ,  H04B10/04

    CPC分类号： H04B10/0775 ,  H04B2210/075

    摘要： Methods and apparatus related to maintaining a pre-determined ratio of a pilot tone power and a total mean optical power of an optical signal are provided. One method includes the steps of detecting the AC and DC components of an optical signal having a pilot tone signal. An amplitude of the pilot tone signal is varied in accordance with a difference between a pre-determined value and a ratio of the AC and DC components. Another method includes the step of generating an optical signal in accordance with a DC bias and an AC bias corresponding to a pilot tone signal. The AC and DC components of the optical signal are detected. At least one of the DC bias and the AC bias is varied in accordance with a difference between a pre-determined value and a ratio of the AC and DC components. An apparatus includes an optical source providing an optical signal in response to a DC bias and an AC bias corresponding to a pilot tone signal. The apparatus includes detectors coupled to measure the AC and DC components of the optical signal. A feedback control varies at least one of the DC bias and the AC bias in accordance with a difference between a pre-determined value and a ratio of the AC and DC components. In various embodiments, the DC bias only, the AC bias only, or both the AC bias and the DC bias are varied.

    摘要翻译： 提供了与维持光信号的导频音功率和总平均光功率的预定比例有关的方法和装置。 一种方法包括检测具有导频音信号的光信号的AC分量和DC分量的步骤。 导频音信号的幅度根据预定值与AC和DC分量的比率之间的差异而变化。 另一种方法包括根据直流偏压和对应于导频音信号的AC偏压产生光信号的步骤。 检测光信号的AC和DC分量。 DC偏置和AC偏压中的至少一个根据预定值和AC和DC分量的比率之间的差异而变化。 一种装置包括光源，响应于DC偏压和对应于导频音信号的AC偏压而提供光信号。 该装置包括耦合以测量光信号的AC和DC分量的检测器。 反馈控制根据预定值和AC和DC分量的比率之间的差异来改变DC偏压和AC偏压中的至少一个。 在各种实施例中，只有DC偏置，仅AC偏压，或AC偏压和DC偏置两者都是变化的。