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Real-time bidirectional coherent Nyquist UDWDM-PON coexisting with multiple deployed systems in field-trial (Post-Deadline)

Shahpari, A. ; Ferreira, RMF ; Guiomar, F. P. ; Amado, S. B. ; Ziaie , S. ; Rodrigues, C.Rodrigues ; Reis, J.D. ; Pinto, A. N. ; Teixeira, A.

IEEE/OSA Journal of Lightwave Technology Vol. 34, Nº 7, pp. 1643 - 1650, April, 2016.

ISSN (print): 0733-8724
ISSN (online): 0733-8724

Journal Impact Factor: 2,567 (in 2015)

Digital Object Identifier: 10.1109/JLT.2015.2508378

Abstract
We experimentally characterize a bidirectional 2.5 Gb/s UDWDM-PON system based on Nyquist shaped DQPSK with digital signal processing in real-time. The optical distribution network power budget of this system is evaluated and in coexistence of UDWDM channels with upstream TWDM-PON and RF Video Overlay signals, a set of optimum parameters and their impact on the network operation is driven. Additionally, we report the first field-trial of bidirectional coherent Nyquist UDWDM-PON using real-time transceivers based on commercial FPGAs, coexisting with the deployed GPON, RF Video Overlay and NG-PON2 technologies. A -44.5 dBm receiver sensitivity is achieved for 64×2.5 Gb/s DQPSK downstream channels and a 17 dB tolerance in dynamic power range of upstream channels is performed.