Title :
Multisignal OFDM-Based Hybrid Optical-Wireless WDM LR-PON With Colorless ONU
Author :
Carvalho, Filipe ; Cartaxo, Adolfo
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. de Lisboa, Lisbon, Portugal
Abstract :
We experimentally demonstrate bidirectional transmission in a multisignal 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.
Keywords :
OFDM modulation; Rayleigh scattering; backscatter; passive optical networks; wavelength division multiplexing; Colorless ONU; RN; bidirectional transmission; colorless optical network unit; multisignal OFDM-based hybrid optical wireless WDM LR-PON; multisignal orthogonal frequency division multiplexing hybrid optical wireless long reach passive optical network; optical line termination; remote node; wavelength division multiplexing; Noise; Optical network units; Optical noise; Optical saturation; Passive optical networks; Wavelength division multiplexing; Colorless ONU; OFDM; Rayleigh backscattering; WDM; colorless ONU; long reach-PON; radio-over-fibre;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2015.2414717
