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Multisignal OFDM-based Hybrid Optical-Wireless WDM LR-PON with Colorless ONU

Carvalho, F. ; Cartaxo, A.

IEEE Photonics Technology Letters Vol. 27, Nº 11, pp. 1193 - 1196, June, 2015.

ISSN (print): 1041-1135
ISSN (online): 1041-1135

Journal Impact Factor: 2,110 (in 2014)

Digital Object Identifier: 10.1109/LPT.2015.2414717

Abstract
We experimentally demonstrate bidirectional
transmission in a multi-signal orthogonal frequency
division multiplexing hybrid optical-wireless
long reach passive optical network with a colorless
optical network unit (ONU), and the optical seed generated
at remote node (RN) 75 km away from optical
line termination. The main impairments are quantified
and the most limiting is shown to be Rayleigh
backscattering beating noise. To overcome it, the ONU
optical gain is increased and a transmission reach
exceeding 25 km beyond the RN is achieved.