Burst-mode FEC performance for PON upstream channels with EDFA optical transients
Townsend, Paul D.
International Federation for Information Processing
The performance of forward error correction (FEC) based on Reed-Solomon coding is analyzed experimentally for a burst-mode upstream channel within a passive optical network (PON) testbed. During this analysis, the upstream FEC performance is impaired by inducing correlated and localized errors within the burst through the injection of optical transients. These transients emulate the optical signal variation associated with the add-and-drop events of wavelength channels within a long-reach optical link based on a chain of erbium doped fiber amplifiers (EDFAs). The robustness of the FEC has been analyzed by measuring the post-FEC bit error rate (BER) as a function of the amplitude of the emulated transients and their delay with respect to the transmitted bursts. A margin of approximately 4dB is demonstrated for the transient amplitude before the FEC degradation. Furthermore, while the post-FEC BER is strongly degraded by the emulated transients, the preFEC BER stays below the FEC threshold, demonstrating the importance of measuring the post-FEC BER in order to correctly characterize the FEC performance in PON upstream channels affected by optical transients.
Forward error correction , Passive optical networks , Burst-mode transmission , Field-programmable gate arrays , Erbium doped fiber amplifiers , Optical transients
Brandonisio, N., Carey, D., Porto, S., Talli, G. and Townsend, P. D. (2018) 'Burst-mode FEC performance for PON upstream channels with EDFA optical transients', 22nd Conference on Optical Network Design and Modelling (ONDM 18), Dublin, Ireland, 14-17 May.
© 2018, IFIP. This is the author's version of the work. It is posted here by permission of IFIP for your personal use. Not for redistribution. The definitive version was published in Proceedings of the 22nd Conference on Optical Network Design and Modelling (ONDM 18), Dublin, Ireland, 14-17 May. https://ondm2018.scss.tcd.ie/wp-content/uploads/2018/05/ONDM2018-Proceedings.pdf