Open AccessThroughput enhancement of slow adaptive orthogonal frequency division multiple access based passive optical network uplink transmission in 20‐km single fibre loopback link employing channel stabilisation
Author(s) -
Jung SangMin,
Hong MoonKi,
Jung SunYoung,
Yang SeungMin,
Han SangKook
Publication year - 2014
Publication title -
iet optoelectronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.379
H-Index - 42
eISSN - 1751-8776
pISSN - 1751-8768
DOI - 10.1049/iet-opt.2013.0141
Subject(s) - telecommunications link , passive optical network , electronic engineering , throughput , computer science , transmission (telecommunications) , orthogonal frequency division multiple access , optical line termination , computer network , access network , orthogonal frequency division multiplexing , optical amplifier , optical carrier transmission rates , channel (broadcasting) , engineering , wavelength division multiplexing , telecommunications , radio over fiber , wireless , materials science , optoelectronics , optics , physics , wavelength , laser
The authors have proposed and experimentally demonstrated a novel slow adaptive orthogonal frequency division multiple access (OFDMA)‐based passive optical network (PON) uplink transmission scheme using a 1‐GHz reflective semiconductor optical amplifier operating as an optical network unit (ONU) in combination with Rayleigh backscattering (RB) mitigation in a 20‐km single fibre loopback link. This RB mitigation, which can dramatically stabilise the channel state information and enhance the total throughput so that the OFDMA‐PON transmitters can operate in the slow adaptive concept and provides beyond 15‐Gbit/s uplink transmission, is achieved by employing 10‐MHz low‐frequency dithering of an optical seed carrier cooperating with a gain‐saturated semiconductor optical amplifier at an optical line terminal. In doing so, the proposed scheme could guarantee a 50% total throughput enhancement with a proof‐of‐concept multiple access scenario for two ONUs, compared to its counterpart that does not apply the RB mitigation technique.