GPON, the Ultimate Pertinent of Next Generation Triple-play Bandwidth Resolution (original) (raw)

The steady increase in the digitisation of every field created a desperate demand for broadband services and the consequent increase in the volume of generated traffic in our communication networks have motivated the need to make access networks in our rural territories too. This paper aims to explain the design and implementation of a passive optical network. The main idea of this paper is to build an optical fiber based access network for broadband connectivity to the rural areas. This will allow us to implement this network modal for expansion of reach of high speed broadband services in future. Keywords: Fiber to the Home (FTTH), Passive optical network (PON) , Optical network terminal (ONT), Optical line terminal (OLT), Gigabit Passive optical network (GPON), broadband, OTDR I. INTRODUCTION The optical fiber is the most advanced transmission medium and the only one capable of supporting next generation networks and services. The main advantages of having a last mile of optical fiber are many: greater speed, higher bandwidth, and longer distance from the central to the subscriber, resistance to electromagnetic interference, higher security, and reduced signal attenuation. Moreover, the fact of using PON technology assumes the elimination of active components outside the plant such as repeaters and optical amplifiers and therefore decreasing the initial investment, reducing power consumption, lesser points of failure. Passive optical network (PON) access network is a point-to-multipoint, fiber to the home network architecture in which unpowered optical splitters are used to make a single optical fiber to serve multiple customers, typically 32-128 [1]. PON networks exploit the low attenuation of optical fiber cable (0.2-0.4 dB/km) and high bandwidth (>30,000 GHz) of single mode optical fibers [2]. These capabilities of PON give commonly more data transmission than as of now accessible networks with existing broadband advances. Also, PON based FTTH networks can give different communication services viz. voice, information and video from one platform [3]. Due to these advantages now most of the telecom operators use FTTH network as optical fiber access network. For a GPON based network maximum of 128 ONTs (Optical Network Terminal) can be included with maximum reachability of 60 km and maximum distance between two consecutive ONTs (Differential fiber distance) of 20 km as per G.984.6 ITU-T specification [4]. GPON uses data transmission speed of 2.44 Gbps in downstream and 1.24 Gbps in upstream. Broadcasting or continuous transmission for downstream and TDM technique for upstream are used as transmission method. In this paper, the approval of proposed design of network is done on the bas is of Link loss Budget and cost. The results shows that the continuity of newly laid optical fiber cable from OLT to ONTs and received power levels falls within optical power loss plan and the cost is lowest. This paper organized with different sections like Basic Components of GPON access network, design and Implementation with flowchart, results, and finally with the conclusion.