CHANNEL MONITORED CHANNEL DUPLEXER FOR OPTIMIZATION OF BIDIRECTIONAL PASSIVE OPTICAL NETWORK

2016 ◽  
Vol 78 (3) ◽  
Author(s):  
Y. Taibin ◽  
Mandela A. A. ◽  
S.M Idrus ◽  
N. Zulkifli
Keyword(s):  
Optical Transmission ◽  
State Of The Art ◽  
Optical Network ◽  
Access Network ◽  
Transmission System ◽  
Passive Optical Network ◽  
Gigabit Ethernet ◽  
Fiber To The Home ◽  
Network Availability ◽  
Network Transmission

Method of optimizing the optical network transmission in access network has been investigated in many years. Unidirectional optical transmission system is the earliest method of delivering the information. In recent years, bidirectional optical transmission system is the most popular network and shall be the first right of refusal to deploy nowadays. It is justify enough by the massive deployment of the popular state-of-the-art network named Passive Optical Network (PON) in Fiber To The Home (FTTH) technologies. Combining 3 wavelengths includes (1) 1310nm, (2) 1490nm, and (3) 1550nm within a fiber is the method used on Gigabit Capable Passive Optical Network (GPON) or Gigabit Ethernet Passive Optical Network (GEPON/EPON). Combining 2 different wavelengths for uplink and downlink on Small Form Pluggable (SFP) lasers also has been a method used to optimized and saved the fiber infrastructure. Compared those techniques, the research optimization focusing on introducing a passive optical duplexer that combined the same wavelength from both end with the element of monitoring via different wavelength to confirm the network availability. In the design, a unidirectional converter able to operate at a nominal 1310nm or 1550nm windows shall be demonstrated up to 10Gbps Ethernet signal.

scholarly journals Passive Optical Network Survivability: Protection, Detection and Restoration

2015 ◽  
Vol 1 (1) ◽  
pp. 128-142
Author(s):  
Huda Saleh Abbas ◽  
Mark A Gregory
Keyword(s):  
Performance Metrics ◽  
Network Reliability ◽  
Optical Network ◽  
Access Network ◽  
Passive Optical Network ◽  
Network Availability ◽  
Restoration Time ◽  
Optical Line ◽  
Fiber Link

Passive optical network (PON) technologies have received increasing attention as demand for fibre access networks has grown. Enhancing fibre access network reliability provides lower operational costs, and improves customer satisfaction. This paper discusses PON survivability including protection schemes for the fiber link and the Optical Line Terminal (OLT), the exciting monitoring techniques of the fiber link, and the effect of reducing the restoration time on the network availability. The main contribution of this study is to provide two protection schemes namely OLT-only-protected and OLT-and-ring protected. The proposed schemes are designed to handle instances of single failure affecting all customers in the network. This work considers three key performance metrics- Failure Impact Robustness (FIR), cost, and availability. The objective of the proposed protection architectures is to guarantee high quality of service at low costs by protecting critical network elements such as OLT and fiber ring. The proposed architectures have been compared with other well-known protection schemes. The results postulate that OLT-and-ring protected approach has 99.993% availability with a 0.09% increase in cost compared to the ring-only protection architecture.

Analisis Perancangan Jaringan Fiber to The Home Area Universitas Nasional Blok IV dengan Optisystem

2020 ◽  
Vol 4 (2) ◽  
pp. 257
Author(s):  
Efan Nuari ◽  
Iskandar Fitri ◽  
Nurhayati Nurhayati
Keyword(s):  
Time Budget ◽  
Optical Network ◽  
Access Network ◽  
Passive Optical Network ◽  
Power Budget ◽  
Fiber To The Home ◽  
National University ◽  
Access Service ◽  
Triple Play Services ◽  
Network Speed

Researchers will be designing the access network Fiber To The Home (FTTH) on the technology of Gigabit Passive Optical Network (GPON). The location that became the case study was the National University of Block IV, where the network speed at the site was slightly reduced speed. The purpose is to get the design of an access service network that is expected to be implemented for triple play services. Starting with data collection of data. The Fiber To The Home (FTTH) network design determining device specification, layout and number of devices used and simulated using Optisystem application. Then in the analysis based on predefined parameters in the form of BER (Bit Error Rate), Link Power Budget, and Rise Time Budget that meet the optical network with the standard of PT. Telkom. The results of the BER value has fulfilled the minimum BER value specified for fiber optic is 10-9 and for parameter Q – Factor obtained value 9,32288 so that has been meets the standard because it shows values above 6

An Innovative Approach to Fiber-To-The-Home (FTTH)

2012 ◽  
Vol 487 ◽  
pp. 753-757
Author(s):  
Hsiang Chen Hsu ◽  
Don Liu ◽  
Shu Sen Tieh ◽  
Chun Hsien Kuo
Keyword(s):  
Optical Network ◽  
Access Network ◽  
Passive Optical Network ◽  
Power Ratio ◽  
Optical Components ◽  
Fiber To The Home ◽  
Fiber Coupler ◽  
Active Point ◽  
Last Mile ◽  
Point To Point

In the last mile of optical access network, FTTX such as fiber-to-the-cabinet, curb, building, home and node construction cost per subscriber has always been a concern for the network operators. In order to cost down the fiber and transceiver deployment, passive optical network (PON) are developed to replace active point-to-point (P2P). Also the splitter placement problems are issued that make efforts to reduce fiber and splitters deployment cost. Cost down the optical components in PONs is one of the successful elements for building the business of fiber-to-the-home (FTTH). For an example of insertion loss (IL), a traditional 1x12 splitter module which is cascaded by one piece of 1x2 (67%:33% power ratio, 2.6dB:6.2dB IL) and 10 pieces of 1x2 (50%:50% power ratio, 3.7dB IL) splitters, the IL of module is 2.6+3.7x3=13.7dB. An economical and innovative 1x12 splitter module presented in this paper could be cascaded just by one piece of 1x3 (IL: 5.4 dB) and 3 pieces of 1x4 (IL: 7.2dB), the IL of module will be 5.4+7.2=12.6dB, 1.1dB less than the former. In the case of 1x36, an innovative one is cascaded by 4 pieces of 1x3 and 9 pieces of 1x4 splitters (IL: 18dB) to replace the traditional one which is cascaded by 35 pieces of 1x2 splitters (IL: 19.9dB). Another case of 2x24, an innovative one is cascaded by 1 piece of 2x2, 2 pieces of 1x3 and 6 pieces of 1x4 splitters (IL: 16.3dB) to replace the traditional one which is cascaded by 1 pieces of 2x2 and 22 piece of 1x2 splitters (IL: 17.4dB). Finally, bundle with less IL, the economical multi-output splitter module can be successfully built up by this novel fiber coupler manufacturing apparatus and method.

scholarly journals DESIGN FIBER TO THE HOME GIGABIT PASSIVE OPTICAL NETWORK UDAYANA UNIVERSITY, SUDIRMAN CAMPUS

2021 ◽  
Vol 5 (2) ◽  
pp. 48
Author(s):  
Pande Ketut Sudiarta
Keyword(s):  
Optical Network ◽  
Access Network ◽  
Passive Optical Network ◽  
Technology Selection ◽  
Q Factor ◽  
Fiber To The Home ◽  
Cable Network ◽  
Point To Point ◽  
Selection Of

To find out the need for fiber optic access network devices from NOC to rooms at Udayana University, Sudirman Campus, fiber to the home network design was made with Gigabit Passive Optical Network (GPON) technology. Selection of GPON technology to reduce the number of ports on OLT and the number of fiber cores compared to the existing technology using point to point. Assuming the bitrate in each room is 21 Mbps and 291 rooms to be served, it takes 5 OLT ports on the NOC. Feeder Cable Network consists of 5 cores distributed to each location using 3 units of 1: 4 splitter, 4 units of 1: 8 splitter, 6 units of 1:16 splitter, 1:32 splitter of 6 units. To maintain service quality, 16 amplifiers are needed. The required fiber cable length is 2.5 km. The quality of service is tested using the Optisystem simulator. The result is that at the closest distance the PRx value is -14.059 dBm, with BER 6.13608 e-103, Q Factor 21.511. Meanwhile, at the farthest distance, the PRx value is -14.105 dBm, with BER of 1.52751 e-120, and Q Factor 23.3159. The results obtained still meet the ITU-T G.984.2 standard

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.

scholarly journals Heavy Traffic Feasible Hybrid Intracycle and Cyclic Sleep for Power Saving in 10G-EPON

2014 ◽  
Vol 2014 ◽  
pp. 1-13
Author(s):  
Xintian Hu ◽  
Liqian Wang ◽  
Zhiguo Zhang ◽  
Xue Chen
Keyword(s):  
Energy Consumption ◽  
Heavy Traffic ◽  
Optical Network ◽  
Power Saving ◽  
Passive Optical Network ◽  
Traffic Load ◽  
Contributing Factors ◽  
Light Traffic ◽  
Gigabit Ethernet ◽  
Qos Guarantee

Energy consumption in optical access networks costs carriers substantial operational expense (OPEX) every year and is one of contributing factors for the global warming. To reduce energy consumption in the 10-gigabit Ethernet passive optical network (10G-EPON), a hybrid intracycle and cyclic sleep mechanism is proposed in this paper. Under heavy traffic load, optical network units (ONUs) can utilize short idle slots within each scheduling cycle to enter intracycle sleep without postponing data transmission. In this way, energy conservation is achieved even under heavy traffic load with quality of service (QoS) guarantee. Under light traffic load, ONUs perform long cyclic sleep for several scheduling cycles. The adoption of cyclic sleep instead of intracycle sleep under light traffic load can reduce unnecessary frequent transitions between sleep and full active work caused by using intracycle sleep. Further, the Markov chain of the proposed mechanism is established. The performances of the proposed mechanism and existing approaches are analyzed quantitatively based on the chain. For the proposed mechanism, power saving ability with QoS guarantee even under heavy traffic and better power saving performance than existing approaches are verified by the quantitative analysis. Moreover, simulations validate the above conclusions based on the chain.

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.

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