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    • 4. 发明授权
    • Channel monitor and method for estimating optical power
    • 信道监视器和估计光功率的方法
    • US08320758B2
    • 2012-11-27
    • US12433868
    • 2009-04-30
    • Michael Cahill
    • Michael Cahill
    • H04B10/08
    • H04B10/07955
    • A method for estimating optical power in an optical channel includes determining a tunable filter full-width, FWF, by measuring a response of the tunable filter to a known signal and mapping the response to frequency. A portion of an optical channel is coupled to an input of the tunable optical filter. A peak power response, PR, and a full width tunable filter response, FWR, to the optical channel are determined by measuring a response of the tunable filter to the optical channel and mapping the response to frequency. A signal power, PS, is then calculated from the peak power response, PR, and a ratio of the full width tunable filter response, FWR, to the tunable filter full-width, FWF.
    • 用于估计光通道中的光功率的方法包括通过测量可调滤波器对已知信号的响应并将响应映射到频率来确定可调滤波器全宽FWF。 光通道的一部分耦合到可调谐滤光器的输入端。 通过测量可调谐滤波器对光信道的响应并将响应映射到频率来确定到光信道的峰值功率响应PR和全宽度可调滤波器响应FWR。 然后从峰值功率响应PR和全宽度可调谐滤波器响应FWR与可调滤波器全宽FWF的比值计算信号功率PS。
    • 10. 发明授权
    • Method and apparatus for estimating optical power
    • 用于估计光功率的方法和装置
    • US09143229B1
    • 2015-09-22
    • US12902032
    • 2010-10-11
    • Michael Cahill
    • Michael Cahill
    • H04B10/079
    • H04B10/079H04B10/07955
    • A method of monitoring optical power in an optical channel includes directing a portion of a broadband optical signal propagating through an optical channel to an optical input of an electrically controllable tunable optical filter. The portion of the broadband optical signal is filtered with the electrically controllable tunable filter to select an optical channel for optical power monitoring. The selected optical channel is detected and an electrical signal that represents the selected optical channel is generated. An optical power of the selected optical channel is estimated from the electrical signal that represents the selected optical channel by performing an iterative deconvolution of the selected optical channel signal with a predetermined response function of the electrically controllable tunable optical filter.
    • 监视光通道中的光功率的方法包括将通过光通道传播的宽带光信号的一部分引导到电可控可调滤光器的光输入。 宽带光信号的部分用电可控可调滤波器进行滤波,以选择用于光功率监测的光信道。 检测所选择的光信道,并产生表示所选择的光信道的电信号。 通过用电可控可调光滤波器的预定响应函数执行所选择的光信道信号的迭代去卷积,从表示所选择的光信道的电信号估计所选光信道的光功率。