| Summary: | The overall intensity noise spectrum due to laser relative intensity noise (RIN) and interferometric conversion of laser phase noise after passing through wavelength conversion (WC) based on cross-phase modulation (XPM) and Mach-Zehnder interferometer (MZI) is modeled along with the resulting noise at the direct-detection receiver It is found that the effect of the laser-induced noise at the receiver is negligible when the MZI operated at quadrature and has a free spectral range (FSR) > 0.01 GHz. Only when FSR < 0.01 GHz is a power penalty induced that increases with decreasing laser current bias, j(0) (0.8 dB, j(0) = 2; 1.7 dB, j(0) = 1.5; 5.2 dB, j(0) = 1.1).
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