Everything you always wanted to know about optical networking but were afraid to ask 1 richard a steenbergen nanog 57 february 20. Fiber to the premises uses fiberoptic cables and associated optical electronics instead of copper wire to connect a customer to a network. Both upstream and downstream traffic on one fiber 1490nm down, 10nm up. This guide will help you get started by providing very basic information we will also point you to more advanced studies and demonstrating that you dont need to break the bank to break into the field. At the end of this network, optical network terminals onts will convert the optical signal into an electrical signal. A single fiber starting from the olt is split through passive optical splitters to serve 64 customerpremise onts. Premises networks are usually short, often less than the 100 meters about 330 feet used as the limit for standardized structured cabling systems that allow twisted pair copper or fiber optic cabling, with backbones on campus networks used in industrial complexes or institutions as long as 500 m or more, requiring optical fiber. These network design rules ndrs provide an overview of the current physical network architecture and high. The internet as an industry is largely based around fiber. Program to remotely power on a pc over the internet using the wakeonlan protocol. Tutorial everything you always wanted to know about optical networking. Each of the devices on the network can be thought of as a node. Overview of optical networks the network as a cloud of information flows connecting different participants. Physical reach physical reach is defined as the maximum physical distance that can be achieved for a particular transmission system.
Fiber to the home installation at customer premises. Pdf introduction of fiber to the home technology researchgate. In this session, learn to identify the variables to consider before you build and what. Ethernet passive optical network epon a tutorial satelinet. Everything you always wanted to know about optical networking. Pons are called passive because, other than at the co and subscriber endpoints, there are no active electronics within the access network. The purpose of this tutorial to to touch on a little bit of every topic, from the. Everything you always wanted to know about optical.
This tutorial will address all of these questions and explain the technologies, architectures, and market trends for emerging optical networks. Computer education for all provides tutorial on data communication and networks which also covers conceptual model and basic elements of data. Ip addresses are 32 bit long, hierarchical addressing scheme. In case of conflict between the material contained in the tutorial and the material of the relevant recommendation the latter always prevails. Cfo 301 standard for installing and testing fiber optics management, security or fire alarm systems, or any other communications link. Designed for premise use where the high bend radius of. Yet many router jockeys dont get enough exposure to it. An overview of gpon in thean overview of gpon in the. Passive optical network pon based ftth access network is.
Gpon gigabitcapable passive optical networks gpon supports. Fiber to the premise resources optical communications corning. Piyasat nilkaew is a network engineer with 15 years of experience in network management and consulting, and has extensive expertise in deploying and integrating multiprotocol and multivendor data, voice, and video network solutions on limited budgets. An ont is typically located on the customers premises. The basics of fiber optics getting started in fiber optics you need tools, test equipment and most of all training. Understanding fiber to the premises fttp fiber optic. Data communication and computer network failure of any host results in failure of the whole ring.
Following are the pon terminologies odn optical distribution network. An optical fiber is made of 3 concentric layers see figure 3. General area of study is on optical transport networks and access network infrastructures sg 15 is the focal point in itu t for the development of standards on optical and other transport network infrastructures, systems, equipment, optical fibres, and the corresponding control plane technologies to. Cable designs for fiber optic networks fiber optic tutorial. Richard steenbergen, nlayer communications everything you ever wanted to know about optical networking but were afraid to ask. Pdf fttx networks ftth networks belong to the family of fttx. However, it is not always easy to find out what has been covered, and where it can be found. The purpose of this tutorial is to touch on a little of every. The fiber to the premise knowledge center is your onestop source for.
P a s sive optic al n et works contents introduction motivation optical access networks passive optical networks pon. This central section, made of silica or doped silica, is the light transmitting region of the fiber. The goal of this website is educating students, users, designers, installers or anyone interested in the subject of fiber and cabling for communications systems. This tutorial is divided into distinct chapters, which explains the structural features of optical fibers and their connections in networks. Components of gpon ftth access network a passive optical network pon is a pointtomultipoint, shared optical fiber to the premises network architecture in. Data communication and computer network 6 wan may use advanced technologies such as asynchronous transfer mode atm, frame relay, and synchronous optical network sonet.
Because of this commitment, we are recognized by these top industry training certification organizations. Currently networks are electronic, in the future endtoend optical or photonic networking is foreseen intelligent programmable network. We are committed to educating our customers, providing quality realworld fiber optic training on the latest products and applications, ensuring you will always receive the most uptodate and industry specific knowledge. 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. Corning optical communications optical connectivity. Optical network terminology sonetsdh synchronous optical network later called synchronous digital hierarchy this standard defines a synchronous frame structure for transmitting time division multiplexed signals. Optical fiber is a highlytransparent strand of glass that transmits light signals with low attenuation loss of signal power over long distances, providing nearly limitless bandwidth. Electronic communication and electronic devices and circuits, and the author of networking. Pdf design and implementation of a fiber to the home ftth. The same fiber carries both downstream olt towards ont and upstream ont towards olt bit streams viz. Whether using ethernet or wifi, you need a foundation to support your needs today and allow your network to grow into the future. An odn realizes the optical transmission from the olt towards the users and vice versa.
Fiber to the premises fttp also known as fiber to the home ftth and fiber to the building. Cornings fiber optic structured cabling solutions create the data centers of tomorrow through reliability, manageability, scalability, and flexibility. Triple play service highbandwidth longreach up to 20 km gpon is the choice of large carriers in the international. Purpose of this tutorial why talk about optical networking. Optical network termination ont optical network unit onu an optical network termination is a customer premises equipment that provides user interfaces to the customer. Design and implementation of a fiber to the home ftth. Longhaul core networks, also known as wide area networks wan or interchange carrier ixc public networks. Our computer networking tutorial is designed for beginners and professionals. The role of optical networks optical network segments are categorized with respect to the size of the area they cover. They are based on optical technologies and components, and are used to route, groom, and restore wavelength levels and wavelengthbased services. A central office distributes an optical signal over an optical distribution network odn. Onu optical network unit an onu is the ponside half of the ont, terminating the pon, and may present one or more converged interfaces, such as xdsl or ethernet, toward the user.
In case of conflict between the material contained in the tutorial and the material. A passive optical network pon is a single, shared optical. A network can be defined as a group of computers and other devices connected in some ways so as to be able to exchange data. Physical reach physical reach is defined as the maximum physical distance that can be achieved for a.
Passive optical network tutorial what is passive optical network. Premise ba fttc fttb olt olt architecture of optical access network dslam 250 700m urban coverag e 3. It includes almost a thousand pages of materials created by the foa covering the basics to advanced topics on fiber optics and premises cabling. There are methods which employ one more backup ring.
Optical networks are telecommunications network of high capacity. An olt is the service provider endpoint of a pon and is placed in a. Our computer network tutorial includes all topics of computer network such as introduction, features, types of computer network, architecture, hardware, software. Addresses are numeric quantities that are easy for computers to work with, but not for humans to remember. Optical devices and components basic concepts in optical networking optimization of optical network design how to handle faults in optical networks.
The single optical fiber consists of the core which is the thin glass center of the fiber where the light travels, the outer optical material that surrounds the core and reflects the light back into it is the cladding, and the plastic coating that protects the fiber from moisture and damage is the buffer coating. From anywhere in the world, any service or feature will be accessible irrespective of the connected network provider or network platform very high bandwidth infrastructure. This tutorial is divided into distinct chapters, which explains the structural features. A single fiber is used to support multiple customers. In premises applications, fiber optic cables can be used as the backbone cabling in a standard structured cabling network, connecting network hardware in the computer roommain cross connect. Today in north america, there are two basic cable designs that are used for designing fiber optic networks. Internetwork a network of networks is called an internetwork, or simply the internet. Thus, every connection in the ring is a point of failure. Molex plug and play advanced fiber optic systems offer premium factorycontrolled optical performance, enable flexible system configuration and fast, economical installation. Figure 34 basic dwdm physical connectivity scenarios. Personnel doing customer premises installation must 1 dress neatly preferably in logo shirts or uniforms for the service and stay clean, 2 have identification picture id preferably, 3 be friendly and courteous remember you are a guest in someones home, 4 show respect for the customers premises and 5 minimize the disruptions and. Modlink is ideal for mission critical applications such as data centers and storage area networks. Optical network segments are categorized with respect to the size of the area they cover.
Fibre network fn provides optical pathways between the gpon ntd and olt. These are loosetube, which are used in many outside plants, duct, directburied applications, and tightbuffered, which are primarily used inside buildings. Ip is a standard that defines the manner in which the network layers of two hosts interact. Stmxx synchronous transfer module each bit rate is a multiple of the lowest level oc1 or stm1.
This technology enables telecommunications service providers to send voice, data, and video at ever increasing rates. Mesh topology in this type of topology, a host is connected to one or multiple hosts. Olt assigned time slots upstream optical line terminal olt in central office. A passive optical network pon is a single, shared optical fiber that uses inexpensive. Passive optical network pon is a form of fiberoptic access network that uses pointtomultipoint fiber to the premises in which unpowered optical splitters are used to enable a single optical fiber to serve multiple premises. An onu typically requires a separate subscriber unit to provide native user services such as telephony.
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