In this paper we present a novel technique, based in what we have called Parametric Asynchronous Eye Diagram (PAED). We have used a simulation scheme, which includes a differentiator and an Artificial Neural Network to monitor simultaneously several impairments such as Chromatic Dispersion, Polarization Mode Dispersion and Optical Signal to Noise Ratio. A number of modulation formats, including NRZ, RZ and QPSK is used in the computation of results. This paper also demonstrates the effectiveness of this technique in monitoring with one single device, mixed traffic, with different bit rates and On-Off Keying (OOK) modulation formats traveling through the network.
Ribeiro, V., Costa, L., Lima, M., & Teixeira, A. L. J. (2012). Optical performance monitoring using the novel parametric asynchronous eye diagram. Optics Express, 20(9), 9851-9861. https://doi.org/10.1364/OE.20.009851