1 results about "Residual dispersion" patented technology

The application belongs to the technical field of optical fiber communication, and discloses an optical fiber transmission link quality monitoring and dispersion compensation optimization method and system, which comprises the following steps: extracting an error vector amplitude, an optical signal-to-noise ratio and constellation distortion features from a coherent receiver and fusing them into a comprehensive quality evaluation index; jointly estimating residual dispersion by using a clock recovery phase and equalizer coefficient distribution; adopting a variable step gradient descent to adaptively optimize dispersion compensation filter parameters; performing performance degradation trend analysis and early warning; and jointly monitoring and cooperatively optimizing multiple wavelength channels.