Huawei Technologies Co., Limited

Yabin Ye

Sen Zhang

Tong Wu

Enbo Zhou

Cristian Prodaniuc

Xiaozhong Shi

Gernot Goeger

Ping Zhao

The present invention relates to the field of network communications and discloses a method for calculating a nonlinear transmission impairment, including: determining that no pump channel exists in an optical fiber link, obtaining a factor of intra-band nonlinear noise that does not pass through an optical filter, and obtaining integral power in signal light bandwidth of a span; correcting the factor of intra-band nonlinear noise that does not pass through an optical filter, to obtain a factor of intra-band nonlinear noise of the span that passes through an optical filter; calculating nonlinear noise of the span; and obtaining total nonlinear noise of the optical fiber link according to the nonlinear noise of the span, and obtaining a nonlinear transmission impairment of the optical fiber link. Embodiments of the present invention further provide an apparatus for calculating a nonlinear transmission impairment of an optical fiber link.

Method and apparatus for calculating nonlinear transmission impairment of optical fiber link

A method for determining an optical signal-to-noise ratio penalty as a measure for a quality of an optical signal transmitted via an optical link between a source optical node and a destination optical node in an optical network, the method includes collecting information of the optical link; determining a configuration parameter Pof the optical link based on the information of the optical link; adjusting the configuration parameter Pto an adjusted configuration parameter P'according to linear impairments in the optical link; and determining the optical signal-to-noise ratio penalty based on a non-linear function of the adjusted configuration parameter P&#x2032;, the non-linear function accounting for non-linear impairments in the optical link.

Method and apparatus for determining an optical signal-to-noise ratio (OSNR) penalty

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Munich, Germany

Yabin Ye