Bi-directional 120 km Long-reach PON Link Based on Distributed Raman Amplification

Kjær, Rasmus; Monroy, Idelfonso Tafur; Oxenloewe, Leif Katsuo; Jeppesen, P.; Pálsdóttir, B.

doi:10.1109/leos.2006.278926

Cited by 17 publications

(10 citation statements)

References 3 publications

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“…The power margin is set to 3 dB. To support long reach PON, the EDC, Distributed Raman Amplification, SOA and EDFAs should be placed at OLT side or other necessary places to increase the transmission distance [24][25][26]. In order to compare the performance of the different algorithm and investigate the phenomena in the long reach PON planning, we did not consider the weight factor η i j in different pair of nodes during the simulation.…”

Section: Simulation Condition Settingmentioning

confidence: 99%

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Physical-aware long reach PON planning

Liu

2015

Telecommun Syst

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To solve the planning in long reach PON, we develop a mathematical model to capture the internal constraints in cascade splitter scenarios. The model does not focus on the maximal transmission distance, but also takes into account other physical constraints (e.g. the power budget) and management requirements. Through analyzing the PON solution structure, a two-stage genetic algorithm with Prüfer sequence is proposed to solve this NP-hard planning problem. Prüfer sequence is used to keep the tree structure of PON during the optimization process. The correctness of the proposed algorithm is checked by the enumeration method. The impacts of ONU distribution and power budget on the cost and graph characteristics are studied as well. The simulations show that the ONUs with boundary distribution has a higher average cost than those with cluster distribution. In addition, as the power budget reduces, the average cost increases and the splitter connections tend to be tree topologies with more branches. B Rentao Gu

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Section: Simulation Condition Settingmentioning

confidence: 99%

“…To support long reach PON, the EDC, Distributed Raman Amplification, SOA and EDFAs should be placed at OLT side or other necessary places to increase the transmission distance [24][25][26]. Many demonstration systems supported more than 1000 users and 100 km.…”

Section: The Influence Of Power Budget On Topology Characteristicsmentioning

confidence: 99%

Physical-aware long reach PON planning

Liu

2015

Telecommun Syst

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“…As these networks are envisioned to carry high capacity links over an extended coverage area and split ratio to support an increased number of customers, network resilience and survivability are essential features. Further, as optical amplifiers are used to extend the physical reach and/or split ratio [4]- [6], measures to detect and rectify hazardous high power exposure from fiber failures, and subsequent amplifier shutdown, are critical. Depending on the location of the fiber cut, this could potentially lead to Class 4 laser radiation exposure.…”

Section: Introductionmentioning

confidence: 99%

Automatic Protection, Restoration, and Survivability of Long-Reach Passive Optical Networks

Wong

Lee

2011

2011 IEEE International Conference on Communications (ICC)

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The long-reach passive optical network (LR-PON) can potentially deliver future bandwidth intensive services to a significantly higher number of customers at a lower unit cost of bandwidth. Carrying substantially higher traffic over increased distances as compared to conventional PONs, the survivability of these networks is a key feature that must be addressed to ensure end-to-end network reliability. Further, as these networks are optically amplified to extend its coverage, measures to detect and remove hazardous high power exposure at the fiber break are also critical. Here, we propose, experimentally demonstrate, and characterize a simple automatic protection switching scheme that exploits the use of a highly-sensitive and fast-response protection module to achieve traffic diversion onto the protection path within 12 ms for all customers. The protection module provides an additional flexibility of activating amplifier shutdown within 2 ms of failure detection, thereby removing the hazard at the fiber break. We also perform numerical analyses of LR-PON survivability based on the probabilistic nature of fiber link failures, for conventional traffic services as well as for peer-topeer sharing over the LR-PON. Our results highlight that the level of improvement in survivability from optical protection in an LR-PON is dependent on the probability link failure of each stage of the network.

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“…Besides, Prince et al [17] expanded the experimental distance up 118 km of fiber. Following the same philosophy, Kjaer et al [18] proposed a bidirectional longreach PON that operates at a symmetric rate of 10 Gbit/s over 120 km. On the other hand, there are other proposals, such as the architecture proposed by Davey et al [19], which succeeds to achieve the deployment of the GPON standard over long-reach PONs up to 135 km.…”

Section: Introductionmentioning

confidence: 99%

A bandwidth assignment polling algorithm to enhance the efficiency in QoS long‐reach EPONs

Merayo

Jiménez

Fernández

et al. 2010

Trans Emerging Tel Tech

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A novel polling algorithm is proposed to provide subscriber differentiation at the upstream channel in long-reach EPONs. As operators and service providers prefer to operate at loads with no congestion and losses, the developed algorithm has been designed to improve the efficiency for those loads at which the network is likely to work. This new scheme permits to anticipate the transmission of some packets in order to take advantage of the wasted bandwidth between consecutive transmissions of ONUs. As a result, not only does this algorithm behave alike other polling algorithms for high loads, but it also improves the efficiency at low and medium loads, leading to a reduction in the mean packet delay. The new algorithm has been tested in different scenarios, motivated by the increasing interest in enlarging the long-reach EPON distances. Simulation results show that as the distance increases, the algorithm achieves a significant reduction of the mean packet delay for an extended range of loads.

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Bi-directional 120 km Long-reach PON Link Based on Distributed Raman Amplification

Cited by 17 publications

References 3 publications

Physical-aware long reach PON planning

Physical-aware long reach PON planning

Automatic Protection, Restoration, and Survivability of Long-Reach Passive Optical Networks

A bandwidth assignment polling algorithm to enhance the efficiency in QoS long‐reach EPONs

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