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Systems and methods for the compensation of nonlinear cross polarization and cross phase modulation in dual polarization coherent channels
Systems and methods for the compensation of nonlinear cross polarization and cross phase modulation in dual polarization coherent channels
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机译:双极化相干信道中非线性交叉极化和交叉相位调制的补偿系统和方法
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摘要
The present disclosure provides systems and methods for the compensation of signal distortion in fiber optic communication systems and the like. More specifically, the present disclosure provides an orthogonal polarization detection and broadband pilot (OPDBP) technique for the compensation of nonlinear cross polarization (i.e. nonlinear cross polarization modulation) (XPolM) induced noise and nonlinear nonlinear cross phase modulation (XPM) induced noise in a high data rate polarization multiplexed (PM) multilevel-quadratxire amplitude modulated (M-QAM) channel due to neighboring channels. This approach allows for the compensation of both XPolM and XPM simultaneously, providing several dBs of optical reach extension. The approach uses a pilot tone based orthogonal polarization detection scheme with broadband (i.e. a few GHz wide) filtering of the pilot tones.
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