The benefits of itconnects beautifully designed pon system include. When pon was first introduced in the 1990s, fiber optic cable and optical transceivers were very expensive. Fttx networks and pointtopoint and pointtomultipoint configurations, moving to elaborating at length on pon and conclude which of its technologies will be the most optimal ones nowadays. In that case, unpowered fiber optical splitters can make a single optical fiber serve multiple endpoints such as customers. Building a nextgeneration optical access network article pdf available in ieee communications magazine 402. Optical fiber networks have high capacity can be used for providing the high bandwidth services even in wireless, infrared means high bandwidth connectivity. Wave division multiplexing, passive optical networking this brief specifically addresses apon applications and the associated synchronization requirements required for the smooth transmission of realtime services over broadband networks.
A passive optical network is a form of fiberoptic access network. The fiber backbone is the infrastructure of data routes that allow people and businesses access to the internet. Active optical networking real estate developers wonder by bill zakowski amedia networks multi dwelling unit multi tennant unit mdumtu owners understand that networking a new development from the start is a relatively inexpensive method to significantly boost property value. Passive optical lans are dramatically faster, more efficient, sustainable, cost effective, scalable and adaptable to future requirements than traditional copperbased infrastructure. What is pon passive optical networks july 20, 2015 comments off on what is pon passive optical networks the pon architecture comprises an optical line terminal olt, based in the central office, and the optical networking terminal ont sometimes referred to as an optical network unit onu based on the customer premise. This course describes and compares the benefits, components and operation of the three main types of passive optical network bpon, gpon and epon as used in various configurations including fibre to the home ftth and fibre to the cabinet fttc. The optical elements used in such networks are only passive components, such as fibers, splitterscouplers and connectors. Standardsbased design and testing for passive optical networks written by loni le vanetter, 3m communications markets division. Gpon networks are currently the leading form of passive optical networks pons, and offer up to a 1. A passive optical network pon is a telecommunications network that uses. What is the difference between a passive optical network and an active optical network.
A working group of the institute of electrical and electronics engineers ieee produced. P a s sive optic al n et works contents introduction motivation optical access networks passive optical networks pon tdmpon physical layer and devices. The use of forward error correction fec codes in future deployments of access networks is quite foreseeable and requires an analysis of the proper code for this. This paper addresses the problem of finding the least costly tree topology timedivision multiplexing pon tdmpon deployment configurations considering. Multiaccess in ethernet passive optical networks epon. Then there is no need to connect individual fibers between the hub and the customer. Since then, the tremendous cost savings and increased network quality has led to. The downstream 1490 nm and upstream 10 nm wavelengths are used to transmit data and voice. The gigabitclass passive optical networks are standardized and. Integration of ethernet passive optical network epon and wimax technologies is regarded as a promising solution for nextgeneration broadband access networks. Analog rf video services are converted to optical format at the 1550 nm wavelength by the optical video transmitter.
Realtime ethernet based on passive optical networks. From the equipment room to the work area and everywhere in between, we offer plugandplay connectivity, high reliability and low cost of ownership. Lam passive optical networks principles and practice prelims final proof page viii. Passive optical networking pon pon differs significantly from earlier direct fiber technologies and copperline infrastructures. A passive optical network pon refers to a telecommunication technology that implements a pointtomultipoint architecture. Physical layer testing of passive optical network pon modules. It specifies the 10 gbs epon reconciliation sublayer, 10gbasepr symmetric and 101gbaseprx physical coding sublayers pcss and physical media attachments. Ethernet passive optical networks professional engineering.
Both have their pros and cons for different applications, and either could work well for you. 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. Gigabyte passive optical network, known as gpon, rely on fiber optic cables to deliver video, data and voice signals. Due to the increased number of stages and onus, ngpons face. Ethernet in the first mile efm refers to using one of the ethernet family of computer network protocols between a telecommunications company and a customers premises. Optical lans eliminate the distance constraints, power requirements and heat dispersion issues of. 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.
Jul 20, 2015 what is pon passive optical networks july 20, 2015 comments off on what is pon passive optical networks the pon architecture comprises an optical line terminal olt, based in the central office, and the optical networking terminal ont sometimes referred to as an optical network unit onu based on the customer premise. Jun 01, 2016 a passive optical network pon refers to a telecommunication technology that implements a pointtomultipoint architecture. Physical layer testing of passive optical network pon modules application note introduction a passive optical network pon1 is an access technology based on the specification developed by the full service access network fsan vendor consortium. Passive optical components and their applications to ftth. Epons build on the international telecommunications union itu standard g. A pon reduces the amount of fiber and central office equipment required compared with pointtopoint architectures. Keywords passive optical networks, access networks, transport technology, virtual private networks, optical access technologies, transport concepts, ethernet, cable networks, wireless access, packet switched networks. The optical line terminal olt resides in the co, connecting the optical access network to an ip, atm, or sonet backbone. The future of optical networks selftest correct answers glossary 1. Passive optical network pon is also known as optical lan or gpon. Block diagram of pon monitoring system figure 4 shows the block diagram of passive optical network pon. Mar 26, 2012 passive optical networks yaakov j stein may 2007 and zvika eitan slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising.
There is no right or wrong answer when it comes to choosing between passive optical networks and active optical networks. Passive optical networks pons are currently evolving into nextgeneration pons ngpons which aim at achieving higher data rates, wavelength channel counts, number of optical network units onus, and extended coverage than their conventional counterparts. Different implementations have been reported 22, 34, all based on a passive wavelength router in the distribution network utilised to provide each onu with a. In the epon technology, the frame from the olt optical line termination is broadcast to all the onu optical network unit 64 maximum. Ethernet passive optical networks professional engineering kramer, glen on. What is pon passive optical networks fiber optic wiki. Finally, in the practical part, simulation software that meets the design requirements will be chosen, the design of passive optical network will be. A pon consists of an optical line terminal olt at the service providers central. And, as passive optical networks are not an industry standard it can be more challenging to implement this type of system. Ethernet passive optical networks is the ieees institute of electrical and electronics engineers approved architecture of choice for the next generation of broadband access. The main goal of the passive optical networks lans was to create the economy of scale and lower the cost of fiberoptic access systems by promoting common standards 9. Gepon olt and onu plugnplay testing example less than 4 minutes. It should be noted, however, the same concepts apply to all passive optical network.
The optical line terminal olt is the heart of the pon network. The network head is connected to an isp to allow the transmission of ip packets encapsulated in ethernet frames. 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. 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. From the customers point of view it is their first mile, although from the access network s point of view it is known as the last mile. Benefits and history of optical networks in the early 1980s, a revolution in telecommunications networks began that was spawned by the use of a relatively unassuming technology, fiberoptic cable. The result is a growing gulf between the capacity of metro networks on one side and enduser needs on the other, with the lastmile bottleneck in between. Transmission systems and media, digital systems and networks digital sections and digital line system optical line systems for local and access networks itutg.
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. A passive optical network pon is a fiberoptic telecommunications technology for delivering broadband network access to endcustomers. It enables the shared use of fiber for most of the distance between a central office and the customer. A passive optical network pon based realtime ethernet ponrte, which can take advantage of pon features such as broad bandwidth, high reliability, and easy maintenance to satisfy the determination and realtime requirements of high performance industrial applications, is proposed. Enhanced security in passive optical networks using wdm pon. Passive optical networks pons and pointtopoint ethernet are architectures that deliver tripleplay services over ftth networks directly from an operators central office. If you continue browsing the site, you agree to the use of cookies on this website. Passive optical networks yaakov j stein may 2007 and zvika eitan slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. The unique reflection spectrum from fiber bragg grating fbg that is located in each optical network unit onu is manipulated in order to detect the fault network. 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. In longreach ethernet passive optical networks lrepons, the distance between olt and onus spans over a longer distance up to 100 km and hence longer rtt i. 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. There are two important types of systems that make fibertothehome broadband connections possible.
Although pon has garnered a lot of attention, there are several tradeoffs that potential buyers should fully understand. Physical layer testing of passive optical network pon. Olt assigned time slots upstream optical line terminal olt in central office. Submitted to ieee transactions on reliability 1 survivability. The optical path that consists of these components is called the optical distribution network odn. They typically split the signal from one input to 32 outputs. Star passive optical networks or pointtopoint active ethernet. 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. 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. These are active optical networks and passive optical networks. Osa optimized design of multistage passive optical networks. This technology uses optical fiber instead of copper to transmit data. Both of these types of optical network make up the fiber backbone of the internet.
Networks navid ghazisaidi, michael scheutzow, and martin maier abstract passive optical networks pons are currently evolving into nextgeneration pons ngpons which aim at achieving higher data rates, wavelength channel counts, number of optical network units onus, and extended coverage than their conventional counterparts. Pdf forward error correction in 10 gbitss ethernet. Using single mode fiber, the olt connects to passive optical splitters, which replace the switch in the closet and require no power. Both upstream and downstream traffic on one fiber 1490nm down, 10nm up. The 3m passive optical lan solutions pols offers a complete endtoend fiber solution.
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