Throughput 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

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...

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Bibliographic Details
Published in:IET optoelectronics 2014-12, Vol.8 (6), p.226-231
Main Authors: Jung, Sang-Min, Hong, Moon-Ki, Jung, Sun-Young, Yang, Seung-Min, Han, Sang-Kook
Format: Article
Language:English
Subjects:
bit rate 15 Gbit/s
channel stabilisation
Channels
distance 20 km
Dithering
Fibre
frequency 1 GHz
Frequency division multiple access
Links
OFDM modulation
Optical communication
optical fibre networks
optical network unit
optical seed carrier
passive optical network uplink transmission
passive optical networks
Rayleigh backscattering
Rayleigh scattering
reflective semiconductor optical amplifler
Semiconductor optical amplifiers
single fibre loopback link
slow adaptive orthogonal frequency division multiple access
Uplinking
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Summary: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.
ISSN:1751-8768
1751-8776
1751-8776
DOI:10.1049/iet-opt.2013.0141