Simple intradyne PSK system for udWDM-PON

Josep Prat, Victor Polo, Panagiotis Zakynthinos, Ivan Cano, Jeison Tabares, Josep M. Fàbrega, Dimitrios Klonidis, Ioannis Tomkos
2012 Optics Express  
A homodyne coherent receiver for ultra-dense WDM-PON with off the shelf components is presented. It consists of a conventional DFB, phase switched clock signal, an optical coupler instead of a 90º hybrid, balanced photodetectors and digital signal processing. The phase swing for a DBPSK signal was optimized and the performance was experimentally evaluated in terms of the sensitivity for several laser linewidths. The acceptable frequency offset and clock time delay was also assessed. The results
more » ... sessed. The results exhibit a sensitivity of -48 dBm at a BER of 10 -3 and indicate a high tolerance to phase noise.
doi:10.1364/oe.20.028758 pmid:23263114 fatcat:zlvtip43drh7nhuaqzrdbhdxdu