Design and implementation of a practical ftth network. The passive optical network simply describes the fact that optical transmission has no power requirements or active electronic parts when the signal is going through the network. 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. Pdf ethernet passive optical network architectures and dynamic. Implementing nextgeneration passive optical network. The bus is a high bandwidth optical fibre which traverses the entire distribution area.
The gpon is a purely passive cabling system and has a low energy consumption this pointtomultipoint optical solution allows to share part of the infrastructure between several users. Optical network unit passive optical splitter pstn internet catv onu onu pon is a kind of passive optical network featuring onetomultiplepoint architecture. This results in a significant reduction in total cost of ownership tco, while enabling the introduction of new, efficient architectures that are deeply adjusted to meet emerging subscriber demands. Optical fiber communication has brought us a new in ternet society. This paper aims to explain the design and planning of a passive optical network based fiber to the home architecture. The basics of passive optical networks pons a pon is a pointtomultipoint network using optical splitters and loose tube singlemode fiber for outdoor network deployments. Passive optical networks are based on a pointtomultipoint architecture, in which optical line terminals olts distribute signals to a large number of end user terminals.
Epon and gpon are popular versions of passive optical networks pons. Passive optical network architectures with optical loopbacks. Gigabit passive optical network gpon is a high bandwidth shared fiber access technology. Fans present business opportunities supporting, the evolution of the fixed access network to enable new, dynamic service offerings, aligned with the forums broadband 2020 vision, and business relationships. Passive optical networks are the most important class of fiber access systems in the world today. Architecture of gpon ftth access network with a tree topology, gpon maximizes the coverage with minimum network splits, thus reducing optical power. Implementing nextgeneration passive optical network designs with fpgas passive optical network pon technology is emerging as the key access technology, as it has a scalable and costeffective architecture to satisfy the evergrowing bandwidth requirements generated by advanc ed applications such as highdefinition television hdtv.
An ftth access network comprises five areas, which are a core network area, a central office area, a feeder area, a distribution area and a user area see the picture below. An overview of gpon in thean overview of gpon in the. In japan, ftth fiber to the home net works, in which optical fibers are installed directly to users homes, have. Components and architecture of gpon ftth access network. We examine pon architectures and dynamic bandwidth. A passive optical network pon is a fiberoptic telecommunications technology for delivering broadband network access to endcustomers. Both the itut and ieee are creating next generation pon standards. The passive optical network techniques are largely anticipated to be the most economical. Passive optical components and their applications to ftth. Network pon architecture which can be the basis for the design of.
Pdf we compile and classify the research work conducted for ethernet passive optical networks. The result of a two year effort by this forum is a low level specification of a passive optical. Gigabit passive optical network gpon tdm architecture, 2. The first passive optical network pon activity was initiated by the fsan group in the mid 1990s. 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.
We then outline in some depth the technologies used to implement this architecture, including the gpon and e. Whats the difference between epon and gpon optical fiber. 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 pons are telecommunication networks that provide services to users by no active elements. The future of ethernet pons selftest correct answers glossary 1.
Each of the optical network terminals has 4 ports, serving either a single user or 2 users, assuming two ports per user. Optical fiber, passive optical network, fttx, point to point, point to multipoint, wdm, simulation. 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. Design of wireless passive optical communication network based. Passive, in this context, refers to the unpowered condition of the fiber and splittingcombining components. The open fiber ftth access network is a multioperator passive network that supports the use of pointtomultipoint and pointtopoint technologies. Gigabit passive optical network gpon will be evaluated in order to obtain an optimal practical sample when designing and implementing any ftth network. Design of wireless passive optical communication network based on fusion of fibre to the home architecture s. 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.
Its main characteristic is the use of passive splitters in the fiber distribution network, enabling one single feeding fiber from the providers central office to serve multiple homes and small businesses. The wavelength division multiplexingpassive optical network wdmpon has been known as the utmost advanced technology with high security, guaranteed qos, transparent protocol and so on. The standard was developed by itu and details an architecture capable of total network throughput of 40 gbits, corresponding to up to 10 gbits symmetric upstreamdownstream speeds available at each subscriber. Nowhere is the next generation moniker more prevalent than in the development of passive optical networking pon standards. Pon is passive optical network featured with onetomultiplepoint architecture. Gigabit passive optical networking xgpongpon course. Design of wireless passive optical communication network. A passive optical network pon is a pointtomultipoint fiber to the premise network architecture. Enhanced security in passive optical networks using wdm pon. Our key device is the arrayed waveguide grating router awgr, a passive device that can achieve contention resolution in the wavelength domain.
Pdf passive optical network architectures with optical. In this paper, we propose three versions of a passive optical data center network architecture podca, depending on the size of the network. This type of network uses unpowered optical splitters along with wdmcwdmdwdm to enable a single optical fiber to be split into many separate fibers to serve multiple locations. 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. Components of gpon ftth access network a passive optical network pon is a pointtomultipoint, shared optical fiber to the premises network architecture in. Ngpon2 also known as twdmpon, nextgeneration passive optical network 2 is a 2015 telecommunications network standard for a passive optical network pon. Basic concepts in optical networking optimization of optical network design. Optical line terminals olt, optical network units onus, passive splitters, and optical network terminals onts. These shorthaul networks of fiberoptical cable are used for internet access, voice. History of pon the first passive optical network pon activity was initiated by the fsan group in the mid1990s. A pon consists of an optical line terminal olt which is located. Pdf the design of passive optical networks according to fsan. A passive optical network pon is a telecommunications network that uses pointtomultipoint logical connections in which passive optical components such as splitters are used to enable a single optical fiber to serve multiple end points. Passive optical networks are the most impor tant class of fiber access.
For this reason, passive optical lans polans or pols are starting to be considered for new deployments. A pon system makes it possible to share expensive components for ftth. Passive optical network pon re network architecture. 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. Optical network segments are categorized with respect to the size of the area they. Fractions of the optical power on the bus aretapped off to provide a signal to each subscriber. All the endnodes are connected to a passive star coupler.
Comparing passive optical networks and passive optical lans. Understanding passive optical lans and gpon network architecture while there are many applications for gpon, this paper will address fibertothedesktop fttd deployment often used in commercial, educational, and governmental office environments. Depending on where the pon terminates, the system can be described as fibertothecurb fttc, fibertothebuilding fttb, or. Optical splitters are used in pon passive optical network. As the number of new fibertohome subscribers grows across the world, the large number of individual optical network units connected to each olt has implications for both the cost and volume of. The key element of the architecture is a 1 to n passive optical coupler splitter that distributes the optical signal to many access points. Passive optical network technology has been around for a long time. Fixed access network sharing architecture and nodal. Passive optical network an overview sciencedirect topics. Outline pon benefits pon architecture fiber optic basics pon physical layer pon user plane pon control plane pons slide 2 3.
The of pointmultipoint architecture is based on the implementation of a network in which the optical concentration resources pon trees are shared by the various operators, while the final. Design and implementation of a fiber to the home ftth. As shown in the following image, it comprises of optical line terminal olt, optical network unit and passive optical splitter. Passive optical network pon simple, under standardization technology 1 fiber line. However, instead of each singlemode strand serving 32 houses, it serves 32 optical network terminals, or onts, that sit in each work area. Yaakov j stein may 2007 and zvika eitan pons slide 2 outline pon benefits pon architecture fiber optic basics pon physical layer pon user plane pon control plane pons slide 3 pon benefits pons slide 4 why fiber. In our architectures, optical signals are transmitted from fast tunable.
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