Showing papers on "10G-PON published in 2017"
TL;DR: The elastic optical network (EON) as discussed by the authors is a network architecture toward beyond the 100-Gb/s era, where major line rates in metro/core optical networks are 100
Abstract: Emerging technologies such as spectrally efficient multicarrier higher order modulation and bandwidth variable wavelength selective switches have led to a change in the optical network architecture from rigid and homogeneous to flexible and heterogeneous in terms of the bit rate, center frequency spacing, modulation format, and optical reach. The elastic optical network (EON) is a network architecture toward beyond the 100-Gb/s era. This tutorial paper reviews elastic opticalnetworking technology and presents its roles and benefits in a new era, where major line rates in metro/core optical networks are 100 Gb/s and beyond. The main features of the EON are that it increases the spectral efficiency in a network manner through rate-adaptive superchannels and distance-adaptive modulation, and it provides cost- and energy-efficient traffic grooming in the optical domain. The EON concept has been widely accepted by industry and academia. Significant standardization efforts have yielded great advances evidenced by the flexible grid and the flexible OTUCn frame format recommendations. Hardware virtualization such as a sliceable multiflow transponder in cooperation with emerging flexible clients will be key to achieving more flexible and cost-effective next generation optical networks.
102 citations
TL;DR: A look beyond the capabilities of SDM as a means of boosting transmission capacity is taken and ideas and concepts on how to exploit the spatial dimension for improved efficiency and resource sharing in optical networks are discussed.
Abstract: Space division multiplexing (SDM) is mainly seen as a means to increase data throughput and handle exponential traffic growth in future optical networks. But its role is certainly more diverse. Research on SDM encourages device integration, brings newfunctionality to network elements, and helps optical networks to evolve. As a result, the number of individual components in future networks will decrease, which in turn will improve overall network reliability and reduce power consumption as well as operational expenditure. After reviewing the state-of-the-art in SDMfiber research and development with a particular focus on weakly coupled single-mode multi-core fibers, we take a look beyond the capabilities of SDM as a means of boosting transmission capacity and discuss ideas and concepts on howto exploit the spatial dimension for improved efficiency and resource sharing in optical networks.
74 citations
TL;DR: The current trends in access are reviewed, a likely roadmap is predicted, and further capacity increases are envisioned to employ multiple wavelengths and advanced line coding.
Abstract: Optical access has grown in speed from 50 Mb/s pi-PON to 10 Gb/s XG-PON. Further capacity increases are envisioned to employ multiple wavelengths and advanced line coding. This paper reviews the current trends in access, and predicts a likely roadmap.
41 citations
TL;DR: The flexibility of the TDM-DWDM PON architecture is demonstrated, which can enable the convergence of multiple service types on a single physical layer and end-to-end service restoration in the case of a primary link failure and dynamic wavelength allocation in response to an increased traffic demand.
Abstract: Dynamically reconfigurable time-division multiplexing (TDM) dense wavelength division multiplexing (DWDM) long-reach passive optical networks (PONs) can support the reduction of nodes and network interfaces by enabling a fully meshed flat optical core. In this paper, we demonstrate the flexibility of the TDM-DWDM PON architecture, which can enable the convergence of multiple service types on a single physical layer. Heterogeneous services and modulation formats, i.e., residential 10G PON channels, business 100G dedicated channel, and wireless fronthaul, are demonstrated co-existing on the same long reach TDM-DWDM PON system, with up to 100 km reach, 512 users, and emulated system load of 40 channels, employing amplifier nodes with either erbium-doped fiber amplifiers or semiconductor optical amplifiers. For the first time, end-to-end software-defined networking management of the access and core network elements is also implemented and integrated with the PON physical layer in order to demonstrate two service use cases: a fast protection mechanism with end-to-end service restoration in the case of a primary link failure; and dynamic wavelength allocation in response to an increased traffic demand.
34 citations
TL;DR: Results reveal that a low latency (less than 1 ms packet delay) for communications among any adjacent BSs can be achieved in the proposed PON-based mobile backhaul network, demonstrating great potential to support future time-critical applications.
Abstract: Low latency is of key importance for mobile networks to support emerging time-critical applications, such as road traffic safety and efficiency. Meanwhile, a passive optical network (PON) is widely recognized as a promising solution for mobile backhaul networks thanks to its high capacity and low energy consumption. In the conventional PON-based mobile backhaul network, where base stations (BSs) are co-located with optical network units, the traffic between the neighboring BSs that are mainly caused by user mobility has to be first sent to the optical line terminal and even further, e.g., edge nodes of mobile core networks, resulting in high latency, although the adjacent BSs are geographically located close to each other. In this paper, a novel PON-based architecture is proposed for mobile backhaul to enhance the connectivity between neighboring BSs. Meanwhile, a tailored medium access control protocol and dynamic bandwidth allocation algorithm are introduced to support fast inter-BS communications. The results reveal that a low latency (less than 1 ms packet delay) for communications among any adjacent BSs can be achieved in the proposed PON-based mobile backhaul network, demonstrating great potential to support future time-critical applications.
31 citations
TL;DR: In this paper, the authors describe full service access network operator group perspectives on the feasibility of optical access networks to carry radio access network traffic for the existing and future mobile generations, and discuss topics related to the evolution of radio access interfaces, such as backhaul, midhaul, and fronthaul, their transmission through optical distribution networks, and passive optical network technology feasibility based on both time and wavelength division multiplexing and multiple accesses.
Abstract: This paper describes full service access network operator group perspectives on the feasibility of optical access networks to carry radio access network traffic for the existing and future mobile generations. The paper discusses topics related to the evolution of radio access interfaces, such as backhaul, midhaul, and fronthaul, their transmission through optical distribution networks, and passive optical network technology feasibility based on both time and wavelength division multiplexing and multiple accesses. Technology extensions are also discussed to provide guidance for future research.
29 citations
TL;DR: Extensive simulation results show that, with the use of fast tunable optical transceivers, POTORI and the proposed LF strategy are able to achieve an average packet delay below 10 μs under realistic DC traffic scenarios, outperforming conventional EPSs.
Abstract: Several optical interconnect architectures inside data centers (DCs) have been proposed to efficiently handle the rapidly growing traffic demand. However, not many works have tackled the interconnects at top-of-rack (ToR), which have a large impact on the performance of the data center networks (DCNs) and can introduce serious scalability limitations due to their high cost and power consumption. In this paper, we propose a passive optical ToR interconnect architecture (POTORI) to replace the conventional electronic packet switch (EPS) in the access tier of DCNs. In the data plane, POTORI relies on a passive optical coupler to interconnect the servers within the rack and interfaces toward the aggregation/core tiers. The POTORI control plane is based on a centralized rack controller responsible for managing the communications among the servers in the rack. We propose a cycle-based medium access control (MAC) protocol to efficiently manage the exchange of control messages and the data transmission inside the rack. We also introduce and evaluate a dynamic bandwidth allocation algorithm for POTORI, namely largest first (LF). Extensive simulation results show that, with the use of fast tunable optical transceivers, POTORI and the proposed LF strategy are able to achieve an average packet delay below 10 μs under realistic DC traffic scenarios, outperforming conventional EPSs. On the other hand, with slower tunable optical transceivers, a careful configuration of the network parameters (e.g., maximum cycle time of the MAC protocol) is necessary to obtain a good network performance in terms of the average packet delay.
27 citations
TL;DR: The motivations and architecture for optical-based network virtualization are overviewed, it is argued that spectrum-sliced elastic optical path networks can be considered as a promising substrate choice, and the NP-completeness of the OVNE-SLICE problem is proved.
Abstract: The recent decade has witnessed an evolution toward virtualization of everything for the IT industry. Resources, from utility resources to networking components and functions, are abstracted as logical or virtual services. Virtualization results in elastic, agile, and automated resource provision, and facilitates the resource pricing in a pay-as-you-go model. Among this wave, the optical community has made parallel efforts in virtualizing resources in optical networks including both optical node and link resources. A virtualized optical network can not only seamlessly support automated resource provision, but also supply high-bandwidth any-to-any connectivity for network virtualization. In this paper, we overview the motivations and architecture for optical-based network virtualization. Among candidate optical networking paradigms, we argue that spectrum-sliced elastic optical path (SLICE) networks can be considered as a promising substrate choice, and study the key enabling problem, namely optical virtual network embedding over SLICE networks (OVNE-SLICE). We prove the NP-completeness of the OVNE-SLICE problem, and propose two mathematical models for this problem based on a concept named path-channel . The models are evaluated in our simulation, and compared with alternative models proposed in the literature.
23 citations
TL;DR: The elasticity of the multi-data-center cloud computing environment, which includes both fixed-grid and flexible-grid optical networks, is discussed, and a unified, software defined network control plane based on OpenFlow technologies is introduced.
Abstract: This article discusses prospects and challenges of software defined elastic optical networking for grid and cloud computing environments. We exploit OpenFlow-based unified network control and management for both intra- and inter-data- center networks embedded in the cloud. The intra-data-center network is a fiber-rich environment. Therefore, we assume a flattened optical switching architecture using arrayed waveguide grating routers with fixed spectrum grid. For the inter-data-center network, spectral resources are more precious between the distributed long-haul fiber connections. Therefore, we assume elastic optical networks with flexible grid to achieve high spectral efficiency. This article discusses the elasticity of the multi-data-center cloud computing environment, which includes both fixed-grid and flexible-grid optical networks, and introduces a unified, software defined network control plane based on OpenFlow technologies.
22 citations
TL;DR: This paper discusses the most valuable application scenarios for elastic optical networking and highlights a few features of next generation metro networks and outlines the main road toward this next generation with network experiments and associated use cases.
Abstract: Located at the meeting point between telecom operators and over-the-top service providers, metro networks are particularly well suited for the introduction of radical acceleration of dynamics in the optical networks, leveraging elastic building blocks such as transponders and optical nodes. In this paper, we review innovative solutions which could be used to address some of the challenges of metro networks in the short-medium term (e.g., 2–5 years from now). In particular, we discuss the most valuable application scenarios for elastic optical networking. We then highlight a few features of next generation metro networks and outline the main road toward this next generation with network experiments and associated use cases.
19 citations
15 May 2017
TL;DR: The architectural choices and the specific technologies that are required by the TDM-DWDM PON designs are described and the co-existence of heterogeneous services and modulation formats are demonstrated.
Abstract: The challenging performance targets of future 5G networks will require a radical change in the network design with a much closer interaction between wireless and optical systems. Dynamically reconfigurable time-division multiplexing (TDM) dense wavelength division multiplexing (DWDM) long-reach passive optical networks (PONs) provide a promising platform to enable the convergence of residential broadband, enterprise connectivity and wireless data traffic onto a single network architecture by exploiting the dynamic allocation of DWDM channels. In this paper we describe the architectural choices and the specific technologies that are required by these designs. We also demonstrate the co-existence of heterogeneous services and modulation formats, i.e. residential 10G PON channels, business 100G dedicated channel and wireless fronthaul on long reach TDM-DWDM PON systems. Two different TDM-DWDM PON designs are demonstrated: the first one for densely populated urban areas; and the second one better suited for rural deployment. Two service use cases are also demonstrated by implementing end-to-end software defined networking (SDN) management of the access and core network elements: a fast protection mechanism with end-to-end service restoration in the case of a primary link failure; and dynamic wavelength allocation (DWA) in response to an increased traffic demand.
TL;DR: This paper analyzes the energy consumption of the whole C-RAN architecture, employing Ethernet-based time division multiplexing passive optical network (TDM-PON) (i.e. 10G EPON) as the optical front-haul and proposes a strategy to make the system work in the most energy-efficient state considering the quality of service.
Abstract: Cloud radio access network (C-RAN) is a novel network architecture to meet the ever-increasing user demands. Specially, the operating expense of C-RAN, including the energy consumption, is an issue of common concern. Former studies in energy consumption evaluation of C-RAN only considered the case of one virtual server and one remote radio head, which ignored the optical front-haul and cannot provide an overall analysis for the whole access network. In this paper, we analyze the energy consumption of the whole C-RAN architecture, employing Ethernet-based time division multiplexing passive optical network (TDM-PON) (i.e. 10G EPON) as the optical front-haul. Obviously, it becomes complex to analyze the energy problem for the whole network after bringing in the front-haul part. Based on queueing theory, this paper provides a new network traffic modeling for energy analysis in C-RAN. And, we propose a strategy to make the system work in the most energy-efficient state considering the quality of service. In addition, the comparison between C-RAN and 10G-EPON-LTE architecture has also been conducted. We analyze the power-delay tradeoff, the power changes along with request arrival rate, and the daily power distribution in the two networks. From the numerical results, C-RAN architecture can save more than 60% power in a typically low request arrival rate, and reduce about 40% energy for a whole day, considering the daily user behavior, which demonstrates its large potential in the next generation network.
TL;DR: An approach based on evolutionary game theory is proposed and employed, with a view to examining the interactions among the base stations and the passive optical network, and the proposed system design is proved to be asymptotically stable.
Abstract: The market uptake of the 4th Generation networks is expected to support the increasing demand for wireless broadband services and ensure an enhanced mobile user experience. In this direction, the convergence of a wireless access network with an optical backhauling has been proposed. However, in such a converged architecture, the traditional fixed commitment of the backhaul resources does not prove to be as efficient, and novel dynamic schemes are required that consider both the needs of the base stations and the limitations of the passive optical network. This paper is concerned with the topic of resource allocation in two competing base stations that belong to different operators and share a common optical backhaul network infrastructure. An approach based on evolutionary game theory is proposed and employed, with a view to examining the interactions among the base stations and the passive optical network. Using the model of replicator dynamics, the proposed system design is proved to be asymptotically stable. In addition, this paper studies and reveals the extent to which time delay can have an impact on the proposed system design.
TL;DR: Flexible and highly reliable metro and access integrated networks with network virtualization and software defined networking technologies will be presented.
Abstract: In this paper, flexible and highly reliable metro and access integrated networks with network virtualization and software defined networking technologies will be presented. Logical optical line terminal (L-OLT) technologies and active optical distribution networks (ODNs) are the key to introduce flexibility and high reliability into the metro and access integrated networks. In the Elastic Lambda Aggregation Network (EλAN) project which was started in 2012, a concept of the programmable optical line terminal (P-OLT) has been proposed. A role of the P-OLT is providing multiple network services that have different protocols and quality of service requirements by single OLT box. Accommodated services will be Internet access, mobile front-haul/back-haul, data-center access, and leased line. L-OLTs are configured within the P-OLT box to support the functions required for each network service. Multiple P-OLTs and programmable optical network units (P-ONUs) are connected by the active ODN. Optical access paths which have flexible capacity are set on the ODN to provide network services from L-OLT to logical ONUs (L-ONUs). The L-OLT to L-ONU path on the active ODN provides a logical connection. Therefore, introducing virtualization technologies becomes possible. One example is moving an L-OLT from one P-OLT to another P-OLT like a virtual machine. This movement is called L-OLT migration. The L-OLT migration provides flexible and reliable network functions such as energy saving by aggregating L-OLTs to a limited number of P-OLTs, and network wide optical access path restoration. Other L-OLT virtualization technologies and experimental results will be also discussed in the paper.
TL;DR: In this paper, the authors introduce two PON protection systems for fast protection switching under 50ms, N:1 and 1:1 schemes, respectively, for high-density cost-effective services and high-reliability business services.
Abstract: A Passive Optical Network (PON) needs a protection scheme to ensure the system's reliability because the bulk of the equipment in an optical network resides in the optical access network portion with star topology. Fast protection switching is important for outage-free maintenance and rapid recovery from failure. This paper introduces two PON protection systems for fast protection switching under 50 ms. Comparisons indicate that N:1 and 1:1 schemes are, respectively, suitable for high-density cost-effective services and high-reliability business services.
02 Jul 2017
TL;DR: A novel datacenter network architecture that combines space and wavelength switching functionalities is demonstrated experimentally, which leverages slotted TDMA/WDM switching to realize dynamic resource allocation with sub-wavelength granularity, thus realizing a low cost and power consumption, scalable datac Center network.
Abstract: The relentless traffic growth in datacenter networks is stimulating the adoption of pioneering optical interconnect technologies as well as their integration with novel network and switching architectures. Even more, the need for disaggregation of data storage and processing resources significantly increases the capacity and dimensioning requirements of such networks. In this context, a novel datacenter network architecture that combines space and wavelength switching functionalities is demonstrated experimentally. The architecture leverages slotted TDMA/WDM switching to realize dynamic resource allocation with sub-wavelength granularity, thus realizing a low cost and power consumption, scalable datacenter network. Dynamic reconfiguration of the slotted network vouches for low latency operation of the data plane and hence, it fulfils the requirements of the envisaged disaggregated datacenter infrastructure. The current paper reports the experimental evaluation of the optical subsystems and demonstrates the proof of concept for combined space- and wavelength-switching with optical bursts of 200 µs duration in different network scenarios. The generation and reception of slotted traffic, as well as the control of the optical switching subsystems is performed by means of addressable FPGA boards.
TL;DR: The main idea of this paper is to build a fabricated environment that allows to analyse the depth on FTTx networks and decide which is the most preferable option for this environment and to explain the design and planning of a passive optical network based fiber to the home architecture.
Abstract: The steady increase in the demand for broadband services and the consequent increase in the volume of generated traffic in our communication networks have motivated the need to implement next generation networks in our territories. Optical Fibre cable is used as media to design long/short network and it supports high bandwidth in Gigabits per second speed. Earlier OFC is used to connect the long distance places and called Optical Transport Network and presently used even in local/Access network called Optical Access Network. In present environment data to be transmitted is so high due to growth in internet. Successful transmission of such a huge bandwidth is big challenging job for long distance network designer. All customers require the QOS and they are interested to make SLA for their service to be obtained from Service provider. ISP should design their network to support the customer requirement suitably otherwise ISP cannot survive in this competitive environment. This paper aims to explain the design and planning of a passive optical network based fiber to the home architecture. The main idea of this paper is to build a fabricated environment that allows us to analyse the depth on FTTx networks and decide which is the most preferable option for this environment. Finally, the simulation software that meets the design requirements will be chosen, the design of passive optical network will be made and the results justify that the network is more viable and can be implemented in a real time.
01 Jul 2017
TL;DR: Techniques discussed in this paper shows how both wired and 5G wireless services may be converged over a single fiber infrastructure, and how optical networking can be harnessed in order to provide flexible millimeter-wave radio-over-fiber.
Abstract: 5G communications will require the effective transmission of new radio signals through fiber networks, in order to facilitate the proliferation of antenna sites as well as greater pooling of resources. Next generation optical access networks can provide an efficient platform for mobile x-haul. Techniques discussed in this paper shows how both wired and 5G wireless services may be converged over a single fiber infrastructure, and how optical networking can be harnessed in order to provide flexible millimeter-wave radio-over-fiber.
TL;DR: This article introduces the basic network architecture of ONDN, which is a complete solution for NDN deployment over optical networks based on wavelength-division multiplexing (WDM), and proposes an innovative alternative to improve network performance.
Abstract: Named data networking (NDN) is a typical implementation of information-centric networking (ICN), which has been widely investigated in recent years for its potential as the next-generation network architecture Optical networks are important as the demand for Internet bandwidth is enormous and they can be used to attain extremely high bandwidth In this article, we study optical named data networking (ONDN), which is a complete solution for NDN deployment over optical networks based on wavelength-division multiplexing (WDM) To the best of our knowledge, this is the first attempt to deploy NDN over optical networks We first introduce the basic network architecture of ONDN, based on which we discuss the intuitive packet routing and forwarding approach in ONDN, and propose an innovative alternative to improve network performance In our proposed approach, a novel packet type, called a response packet, is proposed to reserve wavelength along the routing path for data transmission Packet aggregation in ONDN is discussed to improve the efficiency of wavelength utilization In addition, the optical node structure of ONDN is developed and discussed to support all functionalities proposed in this article
TL;DR: This paper studies the involvement of optical backbone network technologies in support with the different 5G wireless access technologies and the development of optical networks will be discussed with advancement of wireless networks to support high performance communication and satisfy the user.
Abstract: Rapid progress of Internet of Things (IoT) increases the data traffic manifold, which also increases by the requirements of next generation users. Recent analysis predicts IoT technology market worth 883.55 Billion USD by 2022 and it is also predicted that mobile data traffic will grow more than 1000 times compared with the end of 2010 beyond 2020. In order to support high QoS requirements, ITU proposed IMT-2020, which is setting the stage for 5G wireless technologies with broadband data rate more than 5 Gbps, latency less than 1 ms even for high mobile user. Establishing and maintaining a successful wireless communication link among the users with simultaneously achieved all objectives becomes challenging and complex. The backhaul of nearly all wireless access networks is fiber-optic link. In order to support this tremendous amount of data, optical network has been evolved in respective way. These technological advancements and deployments are creating a new landscape in access networks, with an integration of wireless and optical technologies. As optical fiber has penetrated the access network and the latest wireless standards have demanded smaller, higher bandwidth cells, fiber connectivity has become key. This paper studies the involvement of optical backbone network technologies in support with the different 5G wireless access technologies. In particular, the development of optical networks will be discussed with advancement of wireless networks to support high performance communication and satisfy the user.
01 Jan 2017
TL;DR: The wide implementation of PONs and their different types are discussed, and where one excels over the other is introduced, and the underlining challenges of current and future network access technologies are discussed.
Abstract: Optical Communication has grown to become a popular technology used in networking and data transmission. The implementation of optical networks has reached a global scale, and is now available in most countries. This is due to the wide range of benefits that can be achieved with optical networks. The most common implemented optical network is the passive optical network (PONs), which allows achieving the great benefits of an optical network, but at lower costs. PONs enabled the deployment of modern Fibre to the Home (FTTH) networks, which are now considered advanced access technologies compared to traditional DSL networks. This report discusses the wide implementation of PONs and their different types. It also introduces the differences among such networks, and where one excels over the other. Furthermore, it discusses the underlining challenges of current and future network access technologies. Finally, it provides an insight on the promising future techniques for FTTH access networks.
01 Jul 2017
TL;DR: A compatibility with various optical formats in an OPCI node consists of low polarization-dependent loss optical switches with nanosecond-order switching-speed and burst-mode amplifiers with low gain-fluctuation.
Abstract: We develop an optical integrated network technology to cope with the rapid traffic fluctuation and the data service diversification. An optical packet and circuit integrated (OPCI) node can provide flexible optical paths for high quality of service, and dynamic optical packets for best-effort service on the same infrastructure. In this paper, we present a compatibility with various optical formats in an OPCI node consists of low polarization-dependent loss optical switches with nanosecond-order switching-speed and burst-mode amplifiers with low gain-fluctuation.
01 Jul 2017
TL;DR: A new design for converged 5G backhaul based on improved passive optical network architecture and time-frequency based resource allocation is proposed that ensures compatibility of optical and wireless backhaul with OFDMA based 5G radio access networks.
Abstract: Modern 5G network are becoming denser and more agile in terms of deployment options. The average throughput and overall capacity of 5G networks are continuously growing by using variety of new solutions. However, backhaul technologies for mobile network are either low capable or inconvenient for dense deployment. In this paper, we propose a new design for converged 5G backhaul based on improved passive optical network architecture and time-frequency based resource allocation. The advantages of the proposed convergent backhaul are in unified resource allocation that ensures compatibility of optical and wireless backhaul with OFDMA based 5G radio access networks.
10 Jul 2017
TL;DR: Optical access technologies for 5G mobile communication networks such as mobile data compression, high-speed passive optical network (PON), and analog radio over fiber (RoF) technologies are reviewed.
Abstract: We reviews optical access technologies for 5G mobile communication networks such as mobile data compression, high-speed passive optical network (PON), and analog radio over fiber (RoF) technologies. Recent feasibility studies for future optical access network with optical mobile convergence are discussed.
06 Apr 2017
TL;DR: This article analyzes architectures and techniques of the optical networks with taking into account the cognitive methodology based on continuous cycle “Observe–Orient–Plan–Decide–Act–Learn” and the ability of the cognitive systems adjust itself through an adaptive process by responding to new changes in the environment.
Abstract: This article analyzes architectures and techniques of the optical networks with taking into account the cognitive methodology based on continuous cycle “Observe–Orient–Plan–Decide–Act–Learn” and the ability of the cognitive systems adjust itself through an adaptive process by responding to new changes in the environment. Cognitive optical network architecture includes cognitive control layer with knowledge base for control of software–configurable devices as reconfigurable optical add-drop multiplexers, flexible optical transceivers, software–defined receivers. Some techniques for cognitive optical networks as flexible–grid technology, broker–oriented technique, machine learning are examined. Software defined optical network and integration of wireless and optical networks with radio over fiber technique and fiber–wireless technique in the context of cognitive technologies are discussed.
01 Jul 2017
TL;DR: The advantages of using photonic technology in intra-datacenter networks are discussed, and a cross-layer view for network architecture design is presented.
Abstract: The paper highlights the challenges related to the increasing importance of datacenter services, leading to dramatically growing datacenter traffic. The advantages of using photonic technology in intra-datacenter networks are discussed and a cross-layer view for network architecture design is presented.
Patent•
05 Oct 2017
TL;DR: In this article, a fiber-to-coax optical network unit for converting one or more Gigabit or Ethernet Passive Optical Network (GPON or EPON) fibers to coaxial cable lines to connect a subscriber's premises to a Community Access Television (CATV) system is presented.
Abstract: A fiber-to-coax optical network unit for converting one or more Gigabit or Ethernet Passive Optical Network (GPON or EPON) fibers to one or more coaxial cable lines to connect a subscriber's premises to a Community Access Television (CATV) system.
TL;DR: This paper describes optical access networks focusing on passive optical network (PON) technologies from a technical point of view and addresses solutions for their application.
Abstract: This paper describes optical access networks focusing on passive optical network (PON) technologies from a technical point of view. Optical access networks have been applied to fiber-to-the-home as a driving force of broadband services and their use will continue growing in the near future. They will be applied as an aggregate component of broadband wireless networks. This paper also addresses solutions for their application. key words: optical access network, PON, broadband service, mobile backhaul, mobile fronthaul
TL;DR: This paper aims to explain the design and planning of a Passive Optical Network (PON) based wireless fibre to the Home architecture and the behaviour of links of optical fibre when the signal goes through all the elements such as optical fibre, splitters, multiplexers and the goal is to find a good quality of signal in all receivers.
Abstract: At present Optical fibre cable is used as media to design long/short network and it supports high bandwidth in Gigabits per second speed. Earlier OFC is used to connect the long distance places and called Optical transport network and presently used even in local/Access network called Optical Access network. In present environment data to be transmitted is so high due to growth in internet. Successful transmission of such a huge bandwidth is big challenging job for long distance network designer. This paper aims to explain the design and planning of a Passive Optical Network (PON) based wireless fibre to the Home architecture. The purpose is to show the behaviour of links of optical fibre when the signal goes through all the elements such as optical fibre, splitters, multiplexers and the goal is to find a good quality of signal in all receivers. The final goal pursued with this paper is to evaluate the performance of the whole system. The steady increase in the demand for broadband services and the consequent increase in the volume of generated traffic in our communication networks have motivated the need to implement next generation access networks in our territories. To develop multimedia telecommunication networks as an infrastructure, it is necessary to install highly reliable optical fibre cable network architecture like PON based fibre to the Home Network. In a point-to-multipoint architecture, PON is an appropriate architecture to provide high bandwidth for many customers. For any Internet Service Providers, the biggest challenge is to design an efficient access network like PON to ensure the QoS and maintenance of that network that includes Identification and Rectification of cable faults in that access network within short time thus enabling efficiency and reputation of ISPs. So this work deals with design and analysis of access network like PON and also the maintenance of the access network which includes Identification and Rectification of optical fibre cable faults in PON based fibre to the Home Network. The quality of this fibre infrastructure/network is monitored by Optical Time Domain Reflectometer for observing losses and fibre breaks and its efficiency is improved by Centralized Fault Detection System. The hardware implementation of the access network like PON based wireless fibre to the Home Network and the testing instruments are also considered for fault identification.
TL;DR: The ONDM 2016 special issue covers a broad range of topics including dynamic elastic optical networks, network virtualization, next-generation optical access networks, spatial division multiplexing networking, and multi-layer design.
Abstract: The ONDM 2016 Special Issue is a collection of outstanding optical networking papers, chosen among the ONDM 2016 most highly ranked papers. The papers in this special issue cover a broad range of topics including dynamic elastic optical networks, network virtualization, next-generation optical access networks, spatial division multiplexing networking, and multi-layer design.