Its architecture implements a pointtomultipoint topology, in which a single optical fiber serves multiple endpoints by using unpowered passive fiber optic splitters to divide the fiber bandwidth among multiple access points. Active elements are in central office, at customer, in repeaters, switches and etc. As the name suggests, optical networks form a class of networks where optical, rather than electronic, components are the building blocks of the network. Since it requires power, an active optical network inherently is less reliable than a passive optical network. A passive optical network pon is a system that transmits all or most of the fiber cabling and signals to endusers. Passive optical network pon which had no active components between co and customer. Optical networks are telecommunications network of high capacity. Network pon passive optical network introductionfiber. How to build a passive optical lan local area network. These are active optical networks and passive optical networks. Olt is connected to optical network unit onu through optical distribution network odn.
The passive optical network techniques are largely anticipated to be the most economical. Such networks currently receive a lot of intention as a m. Olt assigned time slots upstream optical line terminal olt in central office. With more customers adopting pon technology, integrators, installers and end users are finding it beneficial to hone their design and test skills of the optical fiber cabling infrastructure that supports pons. Experts define otn as a collection of optical network elements one that communicate using wavelength division multiplexing wdm. Purpose of this tutorial why talk about optical networking. The only report of its kind, this report evaluates the top optical network equipment vendors on criteria using concrete data and metrics, direct feedback from buyers, vendor market share, market share momentum, brand recognition, and reputation for innovation. Pon means passive optic network, epon is integrated with ethernet technologies, and gepon is a gigabit epon. It provides fullservice solution to solve the bandwidth bottleneck of twisted pair access, and to meet the requirement for highbandwidth services, such as high definition tv and.
Design and implementation of a practical ftth network. Atutorialonopticalnetworks nc state computer science. The internet as an industry is largely based around fiber. Pdf a survey of passive optical networks international. Their name notwithstanding, nextgeneration passive optical networks will employ many active optical devices.
Everything you always wanted to know about optical networking. The gepon gigabit ethernet passive optical network system is composed of the optical line terminal olt, optical distribution network odn and optical network unit onu. Optical technologies continue to advance by ingenious techniques and implementations to improve the performance and capabilities of the optical network see figure 2. Optical devices and components basic concepts in optical networking optimization of optical network design how to handle faults in optical networks.
We then outline in some depth the technologies used to implement this architecture, including the gpon and epon systems being. Inherited from ftths fiber to the home longdistance technology, the ftto fibre to the office or pol passive optical lan solution is now part of a new approach to tertiary horizontal cabling pushed by gpon technologies. Our mission is to clarify highly complex technical standards and topics. Ethernet passive optical network epon a tutorial overview a passive optical network pon is a single, shared optical fiber that uses inexpensive optical splitters to divide the single fiber into separate strands feeding individual subscribers. This tutorial is divided into distinct chapters, which explains the structural features of. Passive optical components and their applications to ftth. Everything you always wanted to know about optical. They are based on optical technologies and components, and are used to route, groom, and restore wavelength levels and wavelengthbased services. Tonex optical networking training boot camp is the answer to your optical networks technology needs from current to next generation technologies for public and private networks. Then there is no need to connect individual fibers between the hub and the customer. An overview of gpon in thean overview of gpon in the. Passive optical networking pon is a technology used by service providers for fibertothehome topologies. Optical networks seem to be the medicine for all problems in longhaul and metro networking optical fibre offers way far more bw than copper cables and is less susceptible to electromagnetic interference also copper is becoming a scarce resource compared to silicon recently optical fibres became the top choice.
A gpon network consists of olt optical line terminals, onu optical network unit, and a splitter. Epons build on the international telecommunications union itu standard g. Passive fiber access architectures gpon optimize the ftth business model by leveraging the high subscriber density allowed by passive splits as high as 64 users per pon or olt port. Its main characteristic is the use of passive splitters in the fiber distribution network, enabling one single feeding fiber from the provider to serve multiple homes and small businesses.
Standardsbased design and testing for passive optical networks written by loni le vanetter, 3m communications markets division. On the passive optical network pon, it is possible to transit atm cells according to the technique developed by the working group fsan full service access network. Ethernet passive optical network epon a tutorial satelinet. Is passive optical networking good for enterprises. The passive optical network pon is just one of several. Visually explained passive optical networks pon gponepon. They typically split the signal from one input to 32 outputs.
A passive optical lan is a layer2 transport medium, built with passive optical network pon technology, that provides converged video, data, wireless access. Syed shujat ali 14211065 m masoud ahmad 1421211016 numan ahmad naseer 1421211 2. Odn optical distribution network an odn realizes the optical transmission from the olt towards the users and vice versa. Optical network elements support ondemand provisioning of connectivity and capacity where required in the network, thus permitting the construction of thin, but. A passive optical network pon is a fiberoptic network utilizing a pointtomultipoint topology and optical splitters to deliver data from a single transmission point to multiple user endpoints. The cornerstone of an optical network is the advanced optical technologies that perform the necessary all optical functions.
Each offers ways to separate data and route it to the proper place, and each has advantages and disadvantages as compared to the other source. Depending on where the pon terminal is located, the system can be described as fibertothecurb fttc, fibertothebuilding fttb, or fibertothehome ftth. Also known as the access network or local loop, the last mile consists predominantly, in. There are two important types of systems that make fibertothehome broadband connections possible. In that case, unpowered fiber optical splitters can make a single optical fiber serve multiple endpoints such as customers. This tutorial discusses the economics, technological underpinnings, features and benefits, and history of epons. Basic concepts of passive optical networks gepon gpon. Optical fiber, passive optical network, fttx, point to point, point to multipoint, wdm, simulation.
Pons are called passive because, other than at the co and subscriber endpoints, there are no active electronics within the access network. Depending on where the pon terminates, the system can be described as fibertothecurb fttc, fibertothebuilding fttb, or. Optical transport network otn is a protocol for sending network messaging over optical fiber networks. In japan, ftth fiber to the home net works, in which optical fibers are installed directly to users homes, have been so popular that the number of contrac. To that extent, a dynamic multiwavelength protocol has been developed to increase the network upstream bandwidth and introduce multiple service levels to a fiber to the homebased through a gigabit passive optical network gpon. This tutorial will address all of these questions and explain the technologies, architectures, and market trends for emerging optical networks. All that equipment add cost and complexity to the network. Transport media structured cabling systems gpon uses the passive, physical cabling infrastructure to transmit a signal. A passive optical network, on the other hand, does not include electrically powered switching equipment. Gpon training gigabit passive optical networking training. A tutorial on machine learning for failure management in.
Jun 01, 2016 a passive optical network pon refers to a telecommunication technology that implements a pointtomultipoint architecture. This paper gives an overview of past and recent developments of passive optical networks pons. That is to say a passive optical network shares fiber optic strands for portions of the network. Its arrangement is a point to multipoint pmp network. Passive optical lan making advantages of the optical fibers, can provide not only higher bandwidth, but also a lot of other benefits to the local area network.
Both upstream and downstream traffic on one fiber 1490nm down, 10nm up. Optical networking training boot camp by tonex crash course. I will explain more details on gpon fundamental in the next post. Gpon training gigabit passive optical networking training course customize it. Everything you always wanted to know about optical networking but were afraid to ask 1 richard a steenbergen nanog 57 february 20. Discover if passive optical networking is good for you. Besides, the simple topology shown in the following illustration, pon can work in other topologies.
Because of this setup, passive optical lan can decrease the amount of cable and equipment required to deploy a network. The cost is a fraction of an active system and frees up initial investment and maintenance that can be spent in other areas of the network. A passive optical network pon is a system that brings optical fiber cabling and signals all or most of the way to the end user. Visually explained passive optical networks pongponepon. Comparing passive optical networks and passive optical lans. From the architecture diagram, the optical access network comprises the following scenarios. The purpose of this tutorial is to touch on a little bit of every topic, from the.
Richard steenbergen, gtt everything you ever wanted to know about optical networking but were afraid to ask. In case of conflict between the material contained in the tutorial and the material. The ohio state university columbus, oh 43210 nayna networks milpitas, ca 95035. Optical network training courses perpetual solutions. It contains well written, well thought and well explained computer science and programming articles, quizzes and practicecompetitive programmingcompany interview. How gpon works gigabyte passive optical network gpon. Traditional lan can no longer satisfy the increasing need for higher bandwidth. How passive optical lans are enlightening the enterprise lan.
A passive optical network pon is a single, shared optical fiber that uses inexpensive. A passive optical network pon is a pointtomultipoint, fiber to the premises fttp network architecture in which unpowered optical splitters are used to enable a single optical fiber to serve multiple premises in simple it uses passive optical splitters to serve many subscribers from one optical unit a pon consists of i. Passive optical networks are the most important class of fiber access systems in the world today. Broadband metro and access networks raj jain cto and cofounder nayna networks, inc. This article provides an overview of current efforts in reducing energy consumption in passive optical access networks. This tutorial is divided into distinct chapters, which explains the structural features. It is a network containing both active and passive elements. Physical media dependent pmd layer specification superseded. A passive optical network pon is a cabling system that uses optical fibers and optical splitters to deliver services to multiple access points. It includes fundamentals of networking, introduction to tcpip, fundamentals of optical communication, carrier networking technologies, next generation data networking technologies, and recent developments in optical networking. Optical networks tutorial wavelength division multiplexing. Gigabit passive optical networking xgpongpon course. Optical fiber communication has brought us a new in ternet society.
Gpon use different wavelength in wdm to transmit and receive data for its uplink and downlink. Gigabit passive optical networking gpon is a 5day course for engineers requiring indepth knowledge of fibre based system fttx and passive optical networking. Optical fiberbased networks can meet the increasing demand for faster and higher bandwidth broadband connections to user premises. Passive optical network pon knowledge introduction.
A single fiber is used to support multiple customers. Gepon system is designed for telecommunication use. Tutorial everything you always wanted to know about optical networking. All optical fibers have a physical limitation known as stimulated brillouin scattering sbs sbs occurs when a high power optical signal over relatively long length 8km fiber generates variations in the fibers optical properties and scatters optical signals in the reverse direction. In japan, ftth fiber to the home net works, in which optical fibers are installed directly to users homes, have. A pon system can be fibertothecurb fttc, fibertothebuilding fttb or fibertothehome ftth. Onu optical network unit onu is a generic term denoting a device that terminates any one of the endpoints of a fiber to the premises network, implements a passive optical network pon protocol, and adapts pon pdus to subscriber service interfaces.
Evolution of passive optical networks passive optical networks pons address the last mile of the communications infrastructure between the service providers co, head end, or point of presence pop and business or residential customer locations. In some contexts, onu implies a multiple subscriber device. A passive optical network pon is a fiberoptic telecommunications technology for delivering broadband network access to endcustomers. The gigabitclass passive optical networks are standardized and. A passive optical lan consists of an optical line terminal olt in the main equipment room and optical network terminals onts located near endusers. Ethernet passive optical networks definition ethernet passive optical networks epon are an emerging access network technology that provides a lowcost method of deploying optical access lines between a carriers central office co and a customer site. Compared to metallic cable, fiber optic systems offer greater bandwidths, lower attenuation, and no crosstalk or electrical interference. Find out how were doing our part to confront this crisis. A pon system consists of optical line termination olt at the. A bayesian network bn model of fault propagation on gigabitcapable passive optical network fiber to the home gponftth access network is designed according to the generic model. Optical networks i about the tutorial optical networks are telecommunications network of high capacity. This expert eguide explores the possibilities a passive optical network or pon offers to both service providers as well as personal users.
Access now to discover the key benefits pon could potentially offer to enterprises and the top factors it managers must consider before choosing pon. The optical line terminal olt is the heart of the pon network. Gpon can transport not only ethernet, but also atm and tdm pstn, isdn, e1 and e3 traffic. Optical tutorials these tutorials offer information on our optical coatings and substrates, lenses, the recommended procedure for cleaning and handling optics, and damage thresholds for optics. One way of providing fiber to the home is through a gigabit passive optical network, or gpon. Odn use wave division multiplexing wdm technology to transmit data from olt to onu. Passive, in this context, refers to the unpowered condition of the fiber and splittingcombining components.
This course is designed to benefit those requiring an in depth knowledge of the principles and applications of ten gigabit and gigabit passive optical networking and fibre systems such as fibre to the x fttx applications and their associated equipment, its flexibility and function within a modern transmission network. As we known, the core of most current operator networks is the asynchronous digital hierarchy synchronous optical network sdhsonet, which has always offered good fault management, performance monitoring, predictable latency, a protection mechanism and, of course, synchronization. By using a combination of frequency and time division multiplexing, voice, video and data are provided to customers over a single strand of fiber optic cable in an architecture that allows providers to minimize both cabling and equipment. Passive optical network, just as its name shows, it only uses fiber and passive components like optical splitters rather than active components like amplifiers, repeaters, or shaping circuits. We can adapt this training course to your groups background and work requirements at little to no added cost. We then outline in some depth the technologies used to implement this architecture, including the gpon and e.
Optical networking technology is well suited to meet the above challenges. Audio recording of a 6session course on optical networking by professor raj jain. 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. Principles and practice find, read and cite all the. Optical access networks passive optical network pon simple, under standardization technology 1 fiber line. Point to multipoint ethernet passive optical network epon tutorial. An overview of passive optical networks ieee conference. The olt takes in all of the optical signals in the form of beams of light from onus and will convert it to an electrical signal.
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