Open AccessExperimental demonstration of novel source-free ONUs in bidirectional RF up-converted optical OFDM-PON utilizing polarization multiplexing
Author(s) -
Chongfu Zhang,
Chen Chen,
Yanqin Feng,
Kun Qiu
Publication year - 2012
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.006230
Subject(s) - orthogonal frequency division multiplexing , optical line termination , passive optical network , multiplexing , optical performance monitoring , optics , telecommunications link , polarization division multiplexing , optical modulation amplitude , heterodyne detection , electronic engineering , polarization (electrochemistry) , physics , computer science , wavelength division multiplexing , optical amplifier , telecommunications , laser , engineering , channel (broadcasting) , wavelength , chemistry
We propose and experimentally demonstrate a novel cost-effective optical orthogonal frequency-division multiplexing-based passive optical network (OFDM-PON) system, wherein all optical network units (ONUs) are source-free not only in the optical domain but also in the electric domain, by utilizing polarization multiplexing (PolMUX) in the downlink transmission. Two pure optical bands with a frequency interval of 10 GHz and downlink up-converted 10 GHz OFDM signal are carried in two orthogonal states of polarization (SOPs), respectively. 10 GHz radio frequency (RF) source can be generated by a heterodyne of two pure optical bands after polarization beam splitting in each ONU, therefore it can be used to down-convert the downlink OFDM signal and up-convert the uplink OFDM signal. In the whole bidirectional up-converted OFDM-PON system, only one single RF source is employed in the optical line terminal (OLT). Experimental results successfully verify the feasibility of our proposed cost-effective optical OFDM-PON system.