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Analysis reveals 1.2 dB improvement in Q-factor in 400G OTN systems, suggesting effective nonlinearity compensation with power monitoring technology.
We use longitudinal power monitoring technology and digital backward propagation nonlinear compensation algorithm to achieve nonlinear compensation for a 400G OTN system based on a single-span of 300km with 100G Baud BP-QPSK, resulting in a 1.2 dB improvement in the Q-factor.
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Qian et al. (2025) studied this question.
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