Joint Estimation of Symbol Rate and Chromatic Dispersion Using Delayed Multiplier for Optical Performance Monitoring

Symbol rate and chromatic dispersion (CD) are very important for optical performance monitoring. The CD, however, hinders the symbol detection. In this paper, we proposed a joint estimation of dispersion. We show that, when signal conjugates multiplies with delayed replica, spectral line can be restored. method provides fast simple solution as traditional tentative CD scanning is time consuming. simulation shows that root-mean-squared error (RMSE) was 39.5 ps/nm 2.4 MHz. For squared-root-raised-cosine (SRRC) pulse shape roll-off factor 0.1, experimental results 25,000 input samples were needed an error-free estimation. RMSE 105.6 63.5 kHz rate, respectively.