RT info:eu-repo/semantics/article T1 PROUD-based method for simple real-time in-line characterization of propagation-induced distortions in NRZ data signals A1 Fidalgo Martins, Hugo A1 Pastor Graells, Juan A1 Cortés, L.R. A1 Piote, D. A1 Martín López, Sonia A1 Azaña, José A1 González Herráez, Miguel K1 All-optical networks K1 Coherent communications K1 Phase modulation K1 Pulse propagation and temporal solitons K1 Kerr effect K1 Dispersion compensation devices K1 Ciencias tecnológicas K1 Electrónica K1 Technology K1 Electronics AB A simple, in-line method for real-time full characterization (amplitude and phase) of propagation distortions arising due to group velocity dispersion and self-phase modulation on 10-20 Gbps transmitted NRZ optical signals is reported. It is based on phase reconstruction using optical ultrafast differentiation (PROUD), a linear and self-referenced technique. The flexibility of the technique is demonstrated by characterizing different data stream scenarios. Experimental results were modelled using conventional propagation equations, showing good agreement with the measured data. It is envisaged that the proposed method could be used in combination with DSP techniques for the estimation and compensation of propagation distortions in fiber links, not only in conventional IM/DD systems but also in coherent systems with advanced modulation formats. PB Optical Society of America SN 0146-9592 YR 2015 FD 2015-09-15 LK http://hdl.handle.net/10017/26340 UL http://hdl.handle.net/10017/26340 LA eng NO European Commission DS MINDS@UW RD 28-mar-2024