There are two main solutions for building cwdm and dwdm backbone networks. Theyre efficient, in that each fiber optic strand can serve up to 32 users. Olt optical line termination an olt is the service provider endpoint of a pon and is placed in a. Active built from transponders and muxponders providing full optical demarcation point. Only passive elements are used in the network to transmit the information and signals between users as well as between users and the companies operating the telecommunication networks. Performance analysis of optical distribution network for ngpon. Both of these types of optical network make up the fiber backbone of the internet. Star passive optical networks or pointtopoint active ethernet.
In some cases, ftth systems may combine elements of both passive and active architectures to form a hybrid system. Figure1 depicts typical set up used for deployment of pon passive optical network. Both upstream and downstream traffic on one fiber 1490nm down, 10nm up. Pdf comparison of active and passive optical access networks. A passive optical network pon is illustrated schematically in the figure below. Optical fiber, passive optical network, fttx, point to point, point to multipoint, wdm, simulation. Passive optical networks yaakov j stein may 2007 and zvika eitan. A pon network eliminates the need for switches and a wiring closet, which means fewer points of failure. 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 fiber communication has brought us a new in ternet society.
In japan, ftth fiber to the home net works, in which optical fibers are installed directly to users homes, have. 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. Pdf a comparison study of passive optical networks pons and active optical. For those that are evaluating optical access technologies, the selection will likely come down to pon passive optical networks or active ethernet.
Pon a comparison of two optical access network technologies and. Passive optical networks pons the optical line terminal olt at the service providers central office co broadcasts data to several optical network terminals onts at the customer premises through the passive fiber network. With alloptical virtual private network vpn function, pon can support ef. Passive optical networks pons are telecommunication networks that provide services to users by no active elements. Gpon is the highest speed, longest life, lowest cost network infrastructure available in the market. Comparison between active and passive optical network. As shown olt optical line termination unit is used to provide ethernet interface to optical core network 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. 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.
Whats the difference between epon and gpon optical fiber. Comparing active and passive optical networks aon vs. An active optical network uses powered switching equipment, like a router, to direct signals to people. Over the last decade, passive optical networks pons have emerged as an. 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. Powered equipment is required only at the source and receiving ends of the signal. Stated simply, active access networks contain an active electronic element, a. Both passive dwdm and active dwdm have their own pros and cons.
Passive optical network market is is growing at cagr of 3. Optical network segments are categorized with respect to the size of the area they cover. Comparing passive optical networks and passive optical lans. Passive optical networks are used to simultaneously transmit signals in both the upstream and downstream directions to and from the user endpoints. Epon, ethernet passive optical network, and gpon are very similar in the sense that they are both pon networks, both utilize fiber optic cables as well as the same optical frequencies. Passive optical network pon pon or passive optical network is not the same as aon as it does not have any electrically powered switching equipment. Gigabit passive optical network gpon optical solutions. The 3m passive optical lan solutions pols offers a complete endtoend fiber solution.
Gpon definition the latest generation of broadband passive optical integrated access standards is the basis for gpon gigabit passive optical network. This tutorial addresses the functionality of these devices in the domain of access networking, with a focus on amplifiers for pon extension and components for wdmpon. The optical fiber and splitters are the truly passive building blocks of the pon, with no electrical powering required. There are lots of advantages like high efficiency, high bandwidth, rich user interface, and exc. Alloptical virtual private network in passive optical. As shown in the following image, it comprises of optical line terminal olt, optical network unit and passive optical splitter. Epon and gpon are popular versions of passive optical networks pons.
The pon manager provides the one console and one screen control to orchestrate consist, repeatable, errorfree it policies and procedures. The first passive optical network pon activity was initiated by the fsan group in the. Optical transmission systems and equipment for wdm networking ii. Aon vs pon difference between aon and pon optical networks.
Depending on where the pon terminates, the system can be described as fibertothecurb fttc, fibertothebuilding fttb, or. Written by the leading researchers and industry experts in the field, passive optical networks provides coherent coverage of networking technologies, fiber optic transmission technologies, as well as the electronics involved in pon system development. Passive optical network manager, or pon manager, is the centralized intelligence and management of the passive optical network and subtended powered devices. 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 between multiple access points. Whats the difference between epon and gpon optical fiber networks. A passive optical network pon is a cabling system that uses optical fibers and optical splitters to deliver services to multiple access points. Passive optical networks pon 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. P a s sive optic al n et works optical access networks passive optical network pon simple, under standardization technology. A pon system consists of optical line termination olt at the. Active optical network aon or active ethernet, and passive optical network pon. The optical line terminal olt is the heart of the pon network. A pon consists of an optical line terminal olt which is located at the service providers central. Aon active optical network apon atm based passive optical network aps automatic protection switching asb assured bandwidth ason automatic switched optical network astn automatic switched transport network atm asynchronous transfer mode awg arrayed waveguide gratings beb best effort bandwidth bgp border gateway protocol. The global passive optical network pon market size was valued at usd 5.
Only passive elements are used in the network to transmit the information and. Broadband passive optical networking bpon bpon is a combination of passive optical networking pon and wavelength division multiplexing wdm. On the other hand, active optical networks aon are p2mp networks as well, but they require opticalelectricaloptical conversion and medium access control mac switching in the rn. Pon makes use of fiber optic splitters for directing traffic signals of different wavelengths. An indepth overview of pon technologies and the potential applications that they enable. From the equipment room to the work area and everywhere in between, we offer plugandplay connectivity, high reliability and low cost of ownership.
Olt assigned time slots upstream optical line terminal olt in central office. From there, around 32 fibers branch out to the subscribers. Comparison between active and passive optical network as time goes by, in order to meet the need for higher bandwidth, faster speed and better utilization of fiber optics, ftth access networks designs have developed rapidly. Their name notwithstanding, nextgeneration passive optical networks will employ many active optical devices. Pdf design of passive optical network atef ibrahim.
An overview of gpon in thean overview of gpon in the. The optical splitters used in pon are capable of separating and collecting optical signals as they are transmitted through the network. Gigabit passive optical network gpon the future of cable network infrastructure is already here. P a s sive optic al n et works optical access networks passive optical network pon. All onts receive the same broadcast data, selecting the appropriate portion corresponding to the. They require at least one switch aggregator for every 48 subscribers. 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. Pdf passive optical networks pons are telecommunication networks that provide services to users by no active elements. Pons have a low building cost relative to active optical networks along. Optical fiber, passive optical network, fttx, point to point, point to. Get active today, there are two major architecture types. A passive optical network pon is a fiberoptic telecommunications technology for delivering broadband network access to endcustomers. A pon system can be fibertothecurb fttc, fibertothebuilding fttb or fibertothehome ftth. You will need electrically charged equipment only at the source of the signal and at the receiving end of the signal.
A feeder fiber from the central office co runs to a remote node rn, which houses a passive optical power splitterkombiner. Pon is a promising candidate in future access areas to provide broadband services with low cost. What does this mean for the international fibertothehome broadband connection. This solution is agnostic to the routers, switches, and adms within the network. This page aon vs pon optical networks and mention difference between aon and pon optical network types ponpassive optical network. Passive optical networks, or pons, have some distinct advantages. Its main characteristic is the use of passive splitters in the fibre distribution network. This switch opens and closes in various ways to direct incoming and outgoing signals to the proper place. In telecommunication,this is known as point to multiple points or known as abbreviation p2mp. With an embedded xwdm system there is no noise, fans, emissions, resulting in a green data center network. The passive optical network techniques are largely anticipated to be the most economical solutions. Passive optical networking pon pon differs significantly from earlier direct fiber technologies and copperline infrastructures.
Pon is passive optical network featured with onetomultiplepoint architecture. The fiber backbone is the infrastructure of data routes that allow people and businesses access to the internet. Passive optical network an overview sciencedirect topics. Passive optical components and their applications to ftth. Active optical networks, however, also have their weaknesses.
Using single mode fiber, the olt connects to passive optical splitters, which replace the switch in the closet and require no power. What is the difference between active and passive fibre. Passive optical network market size pon industry report. Active optical network, also called pointtopoint network, usually uses electrically powered switching equipment such as a router or switch aggregator, to manage signal distribution and direct signals to specific customers. Its arrangement is a point to multipoint pmp network. This is where the optical access network technology comes to play. A single fiber is used to support multiple customers.
Because it requires power, an active optical network inherently is less reliable than a passive optical network. While fsan and itut were actively improving bpon, ethernet was gaining. These shorthaul networks of fiber optical cable are used for internet access, voice. Passive optical networks pons and pointtopoint ethernet are architectures that deliver tripleplay services over ftth networks directly from an operators central office.
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