scholarly journals Evolution of access network sharing towards software based passive optical network: can virtual OLTs run at full line rate?

2020 ◽  
Author(s):  
Marco Ruffini ◽  
David Coyle ◽  
Jasvinder Singh ◽  
Rory Sexton ◽  
Brendan Ryan ◽  
...  
Keyword(s):  
Optical Network ◽  
Access Network ◽  
Passive Optical Network ◽  
Full Line ◽  
Network Sharing

scholarly journals Practical quantum access network over a 10 Gbit/s Ethernet passive optical network

2021 ◽  
Author(s):  
Bi-Xiao Wang ◽  
Shi-biao Tang ◽  
Ying-Qiu Mao ◽  
Wenhua Xu ◽  
Ming Cheng ◽  
...  
Keyword(s):  
Optical Network ◽  
Access Network ◽  
Passive Optical Network ◽  
Ethernet Passive Optical Network

scholarly journals Implementation of a One-LLID-per-Queue DBA Algorithm in EPON

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
N. A. M. Radzi ◽  
N. M. Din ◽  
M. H. Al-Mansoori ◽  
H. Zainol Abidin
Keyword(s):  
Traffic Flow ◽  
Bandwidth Allocation ◽  
Optical Network ◽  
Access Network ◽  
Passive Optical Network ◽  
Dynamic Bandwidth Allocation ◽  
Global Priority ◽  
Upstream Direction ◽  
Ethernet Passive Optical Network ◽  
Dynamic Bandwidth

The advantages of Ethernet passive optical network (EPON) are setting it to be a natural ubiquitous solution for the access network. In the upstream direction of EPON, the directional property of the splitter requires that the traffic flow be mitigated to avoid collision. A dynamic bandwidth allocation (DBA) scheme is desirable in optimizing the bandwidth usage further. In this paper, a global priority DBA mechanism is discussed. The mechanism aims to reduce the overall delay while enhancing the throughput and fairness. This study was conducted using MATLAB where it was compared to two other algorithms in the literature. The results show that the delay is reduced up to 59% and the throughput and fairness index are improved up to 10% and 6%, respectively.

Comparative Analysis of High Speed 20/20 Gbps OTDM-PON, WDM-PON and TWDM-PON for Long-Reach NG-PON2

2019 ◽  
Vol 0 (0) ◽  
Author(s):  
Meet Kumari ◽  
Reecha Sharma ◽  
Anu Sheetal
Keyword(s):  
Wavelength Division Multiplexing ◽  
High Speed ◽  
Optical Network ◽  
Access Network ◽  
Cost Effective ◽  
Input Power ◽  
Passive Optical Network ◽  
Wavelength Division ◽  
Transmission Distance ◽  
Wdm Pon

AbstractNowadays, bandwidth demand is enormously increasing, that causes the existing passive optical network (PON) to become the future optical access network. In this paper, next generation passive optical network 2 (NG-PON2) based, optical time division multiplexing passive optical network (OTDM-PON), wavelength division multiplexing passive optical network (WDM-PON) and time & wavelength division multiplexing passive optical network (TWDM-PON) systems with 20 Gbps (8 × 2.5 Gbps) downstream and 20 Gbps (8 × 2.5 Gbps) upstream capacity for eight optical network units has been proposed. The performance has been compared by varying the input power (−6 to 27 dBm) and transmission distance (10–130 km) in terms of Q-factor and optical received power in the presence of fiber noise and non-linearities. It has been observed that TWDM-PON outperforms OTDM-PON and WDM-PON for high input power and data rate (20/20 Gbps). Also, TWDM-PON shows its superiority for long-reach transmission up to 130 km, which is a cost-effective solution for future NG-PON2 applications.

Design of Optical Access Network Implementing DVB Business and IP Business

2011 ◽  
Vol 130-134 ◽  
pp. 741-744
Author(s):  
Wen Feng Sun ◽  
Yan Zhao Li
Keyword(s):  
Optical Network ◽  
Access Network ◽  
Passive Optical Network ◽  
Wireless Access ◽  
Access Technology ◽  
Optical Access ◽  
Optical Access Network ◽  
The Wire ◽  
The Cost

The paper illustrates the optical access network which includes AON (active optical network), PON (Passive optical network) and EOC (Ethernet over COAX) systems, implementing DVB business and IP business. The optimal optical access technology is selected according to different access situations in the project. The optical access network accomplishes the wire access and wireless access. In order to reduce the cost, the coax is efficiently used.

Research on Power Optimization Based on Adaptive Passive Optical Networks

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Li Li ◽  
Li Hong-Jie
Keyword(s):  
Optical Networks ◽  
Optical Network ◽  
Access Network ◽  
Data Rate ◽  
Passive Optical Network ◽  
High Data Rate ◽  
Transmission Power ◽  
High Data ◽  
Maximum Transmission ◽  
Wdm Pon

AbstractFor the commercial wavelength division multiplexing passive optical network (WDM-PON) with standard single-mode fiber SSMF-28 and 1:64 passive fiber branching at its far end (RN) and 100 GHz C-band continuous wavelength (CW) lasers, the maximum coverage and optimal transmission power of STM-16 and STM-64 with external modulators at different speeds and wave numbers (4λ, 8λ and 16λ) are obtained, respectively. The performance parameter of the high data rate WDM-PON system is analyzed with respect to a number of channels and reach. In order to improve the network utilization and receiving efficiency, the influence of different channels and transmission distances on the performance of high data rate WDM-PON system is analyzed. Simulation analysis with Optisystem15.0. The maximum transmission power required to achieve the maximum transmission distance under the condition of nonlinear constraints is obtained. In order to save power consumption, the configuration of each multi-band PON is optimized in terms of transmission power. It is found that WDM-PON system has to compromise between aggregated data rate and system reach. Future software defined access network reconfigure the access network depending on the dynamic demand and the resources available. Hence depending on the distance between the optical line terminal (OLT) and optical network unit (ONU) guaranteed data rate can be estimated. ONU is equipped with a tunable optical filter (TOF) hence future wavelength can be reconfigured by both service provider and user. It makes it possible for software to customize optical access network.

A bandwidth scalable OFDM passive optical network for future access network

2009 ◽  
Vol 18 (3) ◽  
pp. 409-416 ◽  
Author(s):  
Daniel J. C. Coura ◽  
Jair A. L. Silva ◽  
Marcelo E. V. Segatto
Keyword(s):  
Optical Network ◽  
Access Network ◽  
Passive Optical Network

scholarly journals Last mile mobile hybrid optical wireless access network routing enhancement

2019 ◽  
Vol 8 (1) ◽  
pp. 188-195
Author(s):  
Adam Wong Yoon Khang ◽  
Shamsul J. Elias ◽  
J. Pusppanathan ◽  
Nadiatulhuda Zulkifli ◽  
N. H. Halim ◽  
...  
Keyword(s):  
Routing Protocol ◽  
Optical Network ◽  
Access Network ◽  
Network Capacity ◽  
Passive Optical Network ◽  
Wireless Access ◽  
Optical Wireless ◽  
Front End ◽  
Last Mile ◽  
Wireless Access Network

This study focuses on mobile ad hoc networks (MANETs) that support Internet routing protocol imposing stringent resource consumption constraints of Quality of service (QoS). The mobile Internet causes the ongoing issue of inefficient use of the MANET resources due to its random nature of wireless environments. In this paper, the new improved architecture of the last mile mobile hybrid optical-wireless access network (adLMMHOWAN) is proposed and designed to tackle the arised issues. The proposed design is based on a unified wireless-wired network solution required the deployment of MANET-based wireless fidelity (WiFi) technology at the wireless front-end and wavelengths division multiplexing passive optical network (WDM PON) at the optical backhaul. The critical performance metrics such as network capacity and energy consumption based on modified AODVUU routing protocol using OMNeT++ software is analyzed with 2 scenarios, namely the number of nodes and mobility speed. This mode of communication results in better QoS network capacity of 47.07% improvement, with 26.85% reduction of lower energy resource consumption for mobile wireless front-end over passive optical network backhaul architecture when compared with the existing work of oRiq scheme that focus on improvement in MANETs.

scholarly journals Long Reach and High Capacity Hybrid Passive Optical Network

2018 ◽  
Vol 11 (3) ◽  
pp. 891
Author(s):  
Subhashini N ◽  
Brintha Therese A
Keyword(s):  
Dispersion Compensation ◽  
Optical Network ◽  
Access Network ◽  
High Capacity ◽  
Passive Optical Network ◽  
Modulation Formats ◽  
High Data ◽  
Modulation Format ◽  
Compensation Mechanisms ◽  
Wdm Pon

<p>A number of applications are growing day by day and so the traffic. The need for bandwidth is also increasing at a rapid rate. The bandwidth and speed with which data can be transferred was very less when compared to core networks. The access network which was once a bottleneck is no longer so because of use of optic fiber (FTTH networks). A number of variants of Passive Optical Network (PON) have been proposed like the WDM PON and the Hybrid PON. Hybrid PON is a combination of TDM PON and WDM PON and is advantageous over WDMPON. This paper focuses on high capacity networks that can provide high data rate and long reach in the access part of the network. NRZ modulation format is normally used for transmission.  We consider the advantages provided by the advanced modulation formats like DPSK. This modulation format is used to here and its benefits are evaluated in Hybrid PON network to increase the capacity and the reach of the network. Parameters like the BER and the Q factors are analysed using Optisystem Software. Distortion and the phenomena of dispersion can limit the performance of such a system. Hence Dispersion compensation mechanisms like the Dispersion Compensation Fiber (DCF) are used in the system to transmit data over large distance.</p>

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