Ethernet passive optical networks epon ieee 802 lanman. An epon uses a single trunk fiber that extends from a central office to a passive optical splitter, which then fans out to multiple. Gigabit pons, ethernet pons, and wavelength division multiplexing wdm pons. For those that are evaluating optical access technologies, the selection will likely come down to pon passive optical networks or active ethernet. The global passive optical network pon market size was valued at usd 5.
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. 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. 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. It is recommended to leave the instructions in the final document and simply add the requested information where indicated. Passive optical network pon implements a pointtomultipoint fiberbased access architecture passive fiber splitters are used to split a single optical fiber to serve multiple endpoints, without using dedicated fibers between the hub and customer.
Design of gigabit ethernet passive optical network gepon. A passive optical network pon is a single, shared optical fiber that uses inexpensive. Passive optical network an overview sciencedirect topics. 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. Barry kantner as the telecom markets begin to recover, many network operators are focusing on broadband access technologies. Passive optical networks pons and pointtopoint ethernet are architectures that deliver tripleplay services over ftth networks directly from an. An ethernet passive optical network epon provides broadband access with a sharedfiber infrastructure and a maintenancefree optical distribution network odn. The quality of service can be obtained by introducing a priority using dedicated to ethernet, a zone indicating the priority of the frame. Us20040109450a1 communication apparatus in ethernet. A pon reduces the amount of fiber and central office equipment required compared with pointtopoint architectures. A passive optical network pon is a system that transmits all or most of the fiber cabling and signals to endusers. To support pointtopoint communications between onus in the epon, the communication apparatus in the pon bridge sublayer includes a second processing portion, a second input queue, a second lookup. The debate between passive optical network pon and active ethernet technologies has been going on since day one in the world of fttx networks.
Fiber reaches the boundary of the residential or commercial building. Gigabyte passive optical network, known as gpon, rely on fiber optic cables to deliver video, data and voice signals. The network length in this case reached twenty kilometers with 32 stars passive. Us200307975a1 ethernet passive optical network with.
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. Depending on where the pon terminal is located, the system can be described as fibertothecurb fttc, fibertothebuilding fttb, or fibertothehome ftth. Multiaccess in ethernet passive optical networks epon. Comparison between active and passive optical network. Gpon technology means gigabit passive optical network technology. Specifically, an optical line terminal olt transmits in a time slot of fixed duration e.
Passive optical network pon is a technology viewed by many as an attractive solution to the first mile problem 4, 5. It is connected to a core switch through ethernet pluggables. Pdf traffic modelling for ethernet passive optical. Using single mode fiber, the olt connects to passive optical splitters, which replace the switch in the closet and require no power. Pons minimize the amount of optical transceivers, central office terminations, and fiber deployment. 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. Gepon gigabit ethernet passive optical network is a pointtomultipoint high speed optical fiber access 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. A passive optical network is a form of fiberoptic access network. In this study, we propose the design and analysis of a pon architecture which has an excellent performancetocost ratio. Passive optical network technology has been around for a long time. 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. Gpon networks are currently the leading form of passive optical networks pons, and offer up to a 1. Traffic modelling for ethernet passive optical network using matlab. Passive optical splitter passively splits the signal from the olt over one.
Both upstream and downstream traffic on one fiber 1490nm down, 10nm up. A passive optical network pon carries both telephony traffic and packetbased traffic, each in their native format i. Ethernet passive optical networks epon are an emerging access network technology that provides a lowcost method of deploying optical access lines. To know about this gpon technology, you have to read this article from the first to the last. Depending on where the pon terminates, the system can be described as fibertothecurb fttc, fibertothebuilding fttb, or. Pdf this article describes ethernet passive optical networks, an emerging local subscriber access architecture that combines. Integration of ethernet passive optical network epon and wimax technologies is regarded as a promising solution for nextgeneration broadband access networks. This article describes ethernet passive optical networks, an emerging local subscriber access architecture that combines lowcost pointtomultipoint fiber infrastructure with ethernet. Ethernet passive optical networks epons, which represent the convergence of lowcost ethernet equipment and lowcost fiber infrastructure, appear to be the. Passive optical network market size pon industry report.
Implementing nextgeneration passive optical network. At the end of the day, a single largescale multiservice fttx network may find opportunities where both active ethernet and pon may be deployed together table 7. The optical line terminal olt is the heart of the pon network. The 3m passive optical lan solutions pols offers a complete endtoend fiber solution. Olt assigned time slots upstream optical line terminal olt in central office.
Ethernet passive optical network epon building a next884 free download as powerpoint presentation. A passive optical network consists of an optical line terminal olt at the service providers central office hub and a number of optical network units onus or optical network terminals onts, near end users. A pon system makes it possible to share expensive components for ftth. It uses wdm with the same optical frequencies as gpon and tdma. Epons are designed to carry ethernet frames at standard ethernet rates. Epons build on the international telecommunications union itu standard g. Ethernet passive optical network epon building a next884. Passive optical network pon knowledge introduction. The optical line terminal olt is the starting point for the passive optical network. Fiber to the premises fttp also known as fiber to the home ftth and fiber to the building fttb. A passive optical network pon is a technology viewed by many as an attractive solution to this problem. Gepon system is designed for telecommunication use. Technologies and applications of passive optical networks.
With three wavelengths, it is possible to add a downlink channel for broadcast television channels. For this reason, passive optical lans polans or pols are starting to be considered for new deployments. An overview of gpon in thean overview of gpon in the. The primary function of the olt is to convert, frame and transmit signals for the pon network and to coordinate the optical network terminal ont multiplexing for the shared upstream transmission. Pons are called passive because, other than at the co and subscriber endpoints, there are. 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. A single fiber is used to support multiple customers. A passive optical network pon is a fiberoptic telecommunications technology for delivering. Whats the difference between epon and gpon optical fiber. Keywords passive optical networks, access networks, transport technology, virtual private networks, optical access technologies, transport concepts, ethernet, cable networks, wireless access, packet switched networks. Time synchronization over ethernet passive optical networks. Passive optical network pon simple, under standardization technology 1 fiber line. Next generation ethernet passive optical network ngepon industry connections activity initiation document icaid version.
A pon consists of an optical line terminal olt at the service providers central. Optical transmission systems and equipment for wdm networking ii. 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. A pon network eliminates the need for switches and a wiring closet, which means fewer points of failure. A pon is a pointtomultipoint optical network with no active elements in. Epon is a short haul network using ethernet packets, fiber optic cables, and single protocol layer. Next generation ethernet passive optical network ngepon. Ethernet passive optical network epon ecomputernotes. From the equipment room to the work area and everywhere in between, we offer plugandplay connectivity, high reliability and low cost of ownership. Increasing development in the network technologies and the growing need for a faster network are expected to fuel the market growth in 4g carriage services. Here we will try to explain this technology in a short time. Provided is a communication apparatus in a pon bridge sublayer, which supports pointtopoint communications between optical network units onu in an ethernet passive optical network epon. This amendment also introduces the concept of ethernet passive optical networks epons, in which a point to multipoint p2mp network topology is implemented with passive optical splitters, along with optical fiber pmds that support this topology.
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