METHOD AND APPARATUS FOR ESTIMATING QUALITY OF OPTICAL SIGNAL

    公开(公告)号:US20240250752A1

    公开(公告)日:2024-07-25

    申请号:US18560408

    申请日:2022-05-13

    CPC classification number: H04B10/07955 H04B10/07953

    Abstract: In order to estimate an upper limit value of a bit error rate in an optical transmission unit for an optical transmission system in which an optical sender and an optical receiver are connected each other through the optical transmission unit that utilizes plural spatial resources, and coherent detection is used, after obtaining an amplitude of each crosstalk for different spatial resource in the optical transmission unit and variance of additive white Gaussian noise in the optical transmission system, by changing a value of an independent variable in a formula of the bit error rate, a minimum value of the formula is searched for as the upper limit value of the bit error rate. The formula is represented by the amplitude of each crosstalk, the variance of the additive white Gaussian noise and the independent variable that is different from a time axis.

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