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Nonlinear distortion detecting circuit, optical receiver, optical transmission system, and method for detecting nonlinear distortion
Nonlinear distortion detecting circuit, optical receiver, optical transmission system, and method for detecting nonlinear distortion
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机译:非线性失真检测电路,光接收机,光传输系统和非线性失真检测方法
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摘要
An apparatus includes a first estimator that estimates a signal quality based on an error correction number of an electrical signal obtained by photoelectrically converting a received optical signal; a second estimator that estimates a signal quality from which the influence of nonlinear effects is removed based on signals upstream and downstream of an identification calculator identifying the electrical signal; and a calculator that calculates the difference between the signal qualities estimated by the first and second estimators to calculate the amount of nonlinear effects.
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