Fiber capacity the first implementation of what has emerged as the optical network began on routes that were fiber limited. The exponential growth of carriergrade bandwidth blurs the distinction between access and transport networks. A given connection is associated with quality of service qos. Ofdm over optical access network i p a g e by asmaa ali rayan alaa amr othman maha emad abd elmaqsoud under the supervision of dr. Optical access networks optical wdm networks wiley online. Passive optical network pon knowledge introduction. An epon uses a single trunk fiber that extends from a central office to a passive optical splitter, which then fans out to multiple. Broadband optical access networks and fibertothehome will be an invaluable resource for engineers in research and development, network planners, business managers, consultants as well as analysts and educators for a better understanding of the future of broadband in the field of telecommunications, data communications, and broadband. Technologies and deployments presents the research, design, and deployment experience of stateoftheart access networks.
Passive optical networks pons represent one of the most attractive access network solutions. Technologies and deployment strategies presents a comprehensive overview of emerging optical access network solutions to efficiently meet the anticipated growth in bandwidth demand. Fi, worldwide interoperability for microwave access wimax, celluar and satellite networks, and local multipoint distribution service lmds and. We also simplify optical networking with a unified management system and a resilient, multilayer control plane.
Optical fibre is used by many telecommunications companies to transmit telephone signals, internet communication, and cable television signals. In many kinds of schemes, p2mp optical access mode pon passive optical network, passive optical network is the best choice. Passive optical network wdmpon, fibretothehome ftth, optical access network, next generation. The long reach optical access network lroan objective is to increase the reach of optical access network under a common umbrella. Next generation of optical access network based on reflectivesoa. Demo of uncompressed hdtv over both wireline and wireless links technology challenges are ahead of us. The industry has selected timedivision multiplexing tdm for current pon deployments. Figure 1 compares the spectral attenuation curve of a low loss singlemode itut g. Based on a reference model that covers aon and pon as well as the interfacing equipment, the different sites and locations in an access network. Optical network terminal unit ont integrated circuits. Introduction fiber to the home ftth is being widely spread to support the continuously expanding broadband services. Epons are designed to carry ethernet frames at standard ethernet rates.
Invited paper evolution of optical access networks. Shows the bandwidthupgrading scenario of optical access network. They are based on optical technologies and components, and are used to route, groom, and restore wavelength levels and wavelengthbased services. An overview of gpon in thean overview of gpon in the access. Fiwi networks can not only exchange video, voice, and data as in any broadband access networks, but can also be enriched with fiber or wireless sensors to lead to novel fiberwireless access sensors networks for supporting smart grid applications. Pdf nextgeneration components for optical access networks. Endtoend optical signal connections pointtopoint or broadcast are called lightpaths or optical channels. The optical transport hierarchy oth is a new transport technology for the optical transport network otn developed by the itu. A few of the most important reasons for migrating to the optical layer are described in this module. Pdf evolution of optical access networks researchgate. Optical networks are telecommunications network of high capacity. Besides, the simple topology shown in the following illustration, pon can work in other topologies. Optical fiber technology next generation access networks.
An overview of gpon in thean overview of gpon in the. Optical access network has attractive much attention 1, this is because of the low loss and enormous bandwidth of optical fibre, the. Make your network efficient by using the same optical transport platform for every application, fiber type, and reach. A highly scalable and costeffective optical access network, ieee optical communications, vol. Tawfik ismail a graduation project report submitted to the faculty of engineering at cairo university in partial fulfillment of the requirements for the. Design and implementation of a practical ftth network. To satisfy future bandwidth demands, however, nextgeneration pon systems are being investigated. The chapter concludes with current trends and possible future scenarios. Fig 6b, shows the first migration step of existing tdmpon network infrastructure. A survey on access technologies for broadband optical and wireless networks. An optical network is a type of data communication network built with optical fiber technology.
Optical fiber networks have high capacity can be used for providing the high bandwidth services even in wireless, infrared means high bandwidth connectivity. It utilizes optical fiber cables as the primary communication medium for converting data and passing data as light pulses between sender and receiver nodes. To address that bottleneck, broadband fiber access technologies such as passive optical networks pons are an indispensable solution. This paper discusses sdn for optical access networks, with a focus on sdn overlays for existing networks, a unified control plane for nextgeneration optical access, and an overview of recent research progress in this area. Pdf a survey on access technologies for broadband optical. Jan 23, 2017 an optical network is a type of data communication network built with optical fiber technology. The main bandwidth bottleneck in todays networks is in the access segment. All the networks using optical fiber as transmission medium optical networks when transmitted signal remains in optical form till its arrival at destination all optical network.
Optical transport network otn is a protocol for sending network messaging over optical fiber networks. Then various broadband access technologies are discussed and the major features of hybrid fiber coax hfc, passive optical networks pon, broadband over power lines bpl, wireless fidelity wi. Experts define otn as a collection of optical network elements one that communicate using wavelength division multiplexing wdm. This tutorial is divided into distinct chapters, which explains the structural features. The promise of the optical transport network otn is designed to address these issues by delivering a transparent framework to efficiently carry diverse traffic types. Adtrans one portfolio enables service providers to bridge the gap between network access and transport, leverage their installed base, and extend the bandwidth efficiencies of the core all the way to the optical edge. Optical access networks connect multiple endpoints to a common network node via shared fibre infrastructure. The access network may be further divided between feeder plant or distribution network, and drop plant or edge network. Access networks providing peripheral links lastmile access to the endusers. Covering topics such as nextgeneration networking, communication networks, and photonics, this book provides the. Uinta basin oilfield broadband wireless mesh network english pdf reference case study communications solutions for mining industries kghm polska miedz s. Optical networks digital networks for mission critical. In this method, an optical line terminal olt in the central office co and an optical network unit onu in the subscribers house provide costeffective ftth by allowing use of optical couplers to split 1 fiber into n connections.
The future of optical transmission in access and metro networks an operators view, ecoc 2 a. Quantum secured gigabit optical access networks scientific. The distance between the two network units is up to 20 km. A survey on access technologies for broadband optical and. Next generation of optical access network based on. Optical network drivers many factors are driving the need for optical networks. As the demand for higher bandwidth per user is increasing and. Our 1830 photonic service switch meets all your optical transport needs. The optical distribution network odn can be divided into four parts from the co end to the user end. Richly illustrated throughout to help clarify important topics, broadband optical access networks covers the architectures, protocols enabling technologies of broadband optical access networks, and all current and future competing technologies for access networks.
Although data augmentation does help, the existing optical. Pdf energy efficient optical access network technologies. It is contrasted with the core network, for example the network switching subsystem in gsm which connects local providers to one another. Your entire family is welcomed from the children to the seasoned adult, we will make sure you are treated like family. While ftth systems, such as passive optical network pon systems, are inherently more energy efficient than metallic access. Global service provider survey full steam ahead for the metro optical market the metro optical market in 2018 is multifaceted, service oriented, and highly competitive. Analysis of next generation pon architecture for optical. They will play a vital role to scale up the number of users in quantum key distribution. Architectures and capacity upgrades this overview of passive optical network technologies covers their. Convergence of optical and wireless access networks.
Opticalnetwork drivers many factors are driving the need for optical networks. An example of the system structure is shown in figure 2. Since its conception in late 1980s, passive optical network pon is emerging as a promising solution for last mile access, because of the potential of. The material consolidates and disseminates the latest developments and advances in the area of broadband access network technologies and. Optical fibre network is a method of transmitting information from one place to another by sending pulses of light through an optical fibre. Optical network terminal unit ont integrated circuits and. It was proposed as an extension of the planet acts project, developed in the late 90s with a split ratio of 2048 users over 100 km at 2. Dec 14, 2015 optical access networks connect multiple endpoints to a common network node via shared fibre infrastructure. Access network includes the infrastructures used to connect th e end users optical network unit onu to one central office co.
Pon is an optical distribution network odn which is applied to an access network, an olt and a plurality of client devices onu ont through passive optical cables, optical splitterscombiners, etc. Passive optical networks pons have become a popular fiber access network solution because of its service transparency, cost effectiveness, energy savings, and higher security over other access. Olt optical line termination an olt is the service provider endpoint of a pon and is placed in a co or head end ont optical network termination an ont is a device that terminates the pon and presents native service interfaces to the user. The physical network topology that best supports traffic demand generally varies with the segments core, metro, access of the optical networking structure. It is based on the network architecture defined in itu g. Use the resources below to design a system with our most advanced microcontroller, interface and power delivery technologies. It is noted that considerable creativity and thought is devoted to fiber in the access network, but the economics still do not. Advanced optical networks infrastructures and efficient node component elements in optical access networks such as splitter, awg, fiber, onu and etc are main enabling factors triggering the. Optical access network bandwidth upgradation fig 6. Our integrated circuits and reference designs help you create optical network terminalsunits that enable highspeed data connections for todays passive optical networks. An access network is a type of telecommunications network which connects subscribers to their immediate service provider.
Optical splitters creating a point to multipoint topology are also the same technology regardless of the type of pon system, making any pon network upgradable by changing the optical network terminals ont and optical line terminal olt terminals at each end, with minimal change to the physical network. Our professional staff consists of three new york state licensed. The co is connected to the metropolitan or core network. All the networks using optical fiber as transmission medium optical networks when transmitted signal remains in optical form till its arrival at destination alloptical network. The access network and related brasaaaems will connect to.
This article describes ethernet passive optical networks, an emerging local subscriber access architecture that combines lowcost pointtomultipoint fiber infrastructure with ethernet. Each pon has its own cabling and olt is inside the co. Access optical is located at 2169 merrick road, merrick, ny 11566, our practice has been recognized as a leader in eye care for the community for many years. This chapter deals with the generic architecture of an access network, and describes stock of the present available copper. Highcapacity optical fiber links between cities and major hubs e.
185 487 189 1219 806 1024 196 1484 1050 695 1035 1365 1387 779 881 117 1290 272 700 499 32 701 452 574 1290 938 1252 1069 9 1490 565 1249 1438 466 704 572 610 161 177 552 204 1212 1372 1005 1102 378 1495 532 1237