2.5Gb/s hybrid WDM/TDM PON using radio over fiber technique (original) (raw)
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Design and Implementation of Gigabit Passive Optical Network
International Journal for Research in Applied Science and Engineering Technology IJRASET, 2020
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.
Gigabit Passive Optical Network - GPON
2007 29th International Conference on Information Technology Interfaces, 2007
New services like Television (IPTV) and Video on demand (VoD) over internet together with High Speed Internet access (HSI) have demand for very high bandwidth to customers. XDSL have some form which can satisfy bandwidth demand (VDSL2) but have restriction regarding distance. Probably only suitable solution for high bandwidth demand with a long reach is using optical cable to customers (FTTx). One of the ways is using some type of Passive Optical Network (PON). Gigabit PON (GPON) is the most often type used by European and US providers (in addition with APON and BPON) while providers in Asia predominantly use EPON/GePON. This paper provides an overview of Gigabit PON and analyses network architecture, transmission mechanisms and power budget in GPON systems.
… Journal of Machine Learning and Computing, 2011
Radio-over-Fiber (RoF) technology provides the base platform for the integration of wireless and optical systems. On the other hand, Gigabit Passive Optical Network (GPON) has gained much interest in today's networking due to the flexibility, simple and low cost passive connection. For instance, GPON technology has been successfully deployed in Fiber-to-the-Home (FTTH) that support Triple-Play services which combine the internet data, telephony and video to the home through only single cable. Thus, many research works today focus in accommodating the RoF employed GPON architecture to exploit the bandwidth (BW), maximize the capacity and reduce the cost of development. Hence, this project aimed to characterize the distribution of IEEE 802.11 WLAN service using RoF technique in GPON network architecture by means of simulation which was done in commercial OptiSystem software. The bidirectional transmission was used with fiber length varied from 2-20 km. The analysis was made based on the performance of BER, OSNR and the received power. The simulation results show that the system scheme exhibits the performance standards.
2019
In Fiber to the x (FTTX) system, fiber optic cable is used to connect any broadband network architecture for last mile telecommunication application. Next evolution of PON is called Next Generation PON Stage 2 (NG-PON2). In April 2012, The Full Service Access Network (FSAN) announces Time and Wavelength Division Multiplexing (TWDM) became one of superlative resolutions NG-PON2 implementation. In this project, a design of TWDM that meet the requirement of NG-PON2 constructed on International Telecommunication Union/ Telecommunication Standardization Sector (ITU-T) was proposed. The design achieves the minimum requirements of standard ITU-T G.989 and was simulated using Opti System Software Tool. This project implements NG-PON2 systems at 4x10Gbps using four different wavelengths range 1596 1603 nm, fiber link of 40 km and varied the value of power optical splitter from 1:2, 1:4, 1:8, 1:16 and 1:32. Upon completion of design and simulation, the results are evaluated in terms of optica...
SIMULATION AND PERFORMANCE EVALUATION OF PASSIVE OPTICAL NETWORK SYSTEM
PON provides virtually unlimited bandwidth to the users. It do not use electrically powered components to split the signal. Instead the signal is distributed using beam splitters. Each splitter typically splits a fiber into 16, 32, or 64 fibers, 55 km. BPON uses ATM as the protocol. The Broadband passive optical network (BPON) was the first attempt towards a PON standard. It is controlled by the ITU-T and is designated as ITU-T G.983. This paper provides an overview of PON and analyses network architecture, and evaluate the system performance in terms of BER and Q Factor of the PON system. The performance of PON System is evaluated using Opti system version 12.0.
Analysis on Design and Implementation of 4×10 Gb/s WDM-TDM PON with Disparate Receivers
— This article presents a design of wavelength division multiplexing/ Time division Multiplexing (WDM-TDM) in passive optical network with a data rate of 10 Gbps. The implementation has been carried out for varying link distance from 40km to 100km for 4 different wavelengths with a maximum of 32 supporting users with two different receiver photodiodes. The parameters such as BER and the Q-factor for PON network is being analyzed with the link distance. The BER is decreased as the distance of the network is increased when using the APD receivers than PIN receiver. Optimal value of BER is obtained for a distance of 97 Km in APD and 96 Km in pin receiver. Keywords—Passive Optical Network (PON), Wavelength division multiplexing (WDM), Time division multiplexing (TDM).
Gigabit Access Passive Optical Network Using Wavelength Division Multiplexing—GigaWaM
Journal of Lightwave Technology, 2014
This paper summarizes the research and technical achievements done under the EU project GigaWaM. The goal of this project was to develop a cost-effective solution that can meet the increasing bandwidth demands in access networks. The approach was to use a novel wavelength division multiplexing passive optical network (WDM-PON) architecture that can deliver symmetric 1 Gb/s to 64 users over 20 km standard single mode fiber using the L and C bands for down and upstream, respectively. During the course of the project, a number of key enabling technologies were developed including tunable transceivers, athermal 50 GHz spaced arrayed waveguide grating multiplexer devices, novel hybridization technologies for integration of passive and active electro-optic devices, and system-level algorithms that ensure the quality of service. The outcome of the project proved a reliable, cost-effective, flexible, and upgradable WDM-PON solution, achieving per-user datarates of 2.5 and 10 Gb/s for up and downstream, respectively. The proposed solution is not only suitable for access networks, but also for metro aggregation and mobile backhaul.
Journal of Lightwave Technology, 2010
Colorless gigabit wavelength-division-multiplexing (WDM)/time-division-multiplexing (TDM) hybrid passive optical network (PON) using a remote protocol terminator is proposed and experimentally demonstrated. The system consists of reflective semiconductor optical amplifier-based WDM-PON and a legacy TDM-PON, combined with a simple and efficient remote node structure in order to provide high-speed fiber-to-the-home service to a large area with a high population density. The demonstrated system can support 512 subscribers with a single feeder fiber. The performance and feasibility of the system were evaluated by transmitting gigabit per second data including the effects of Rayleigh backscattering and 20 km attenuation. The system has been used by Korea Telecom to provide commercial services in Gwangju, Korea, since March 2009, after successfully passing through the benchmark test. This is the first commercial deployment of a WDM/TDM hybrid PON. It can accommodate field-deployed TDM-PON link without any modification and extend the maximum total reach of PON link by the use of remote protocol termination. Number of subscribers and the allocated bandwidth to the subscribers can be designed by simply changing the splitting ratio. Index Terms-Passive optical network (PON), semiconductor optical amplifier (SOA), time-division multiplexing (TDM), wavelength-division multiplexing (WDM).
Assessment of WDM Based RoF Passive Optical Network
Saudi Journal of Engineering and Technology
In this research, alternative Raman amplifier configuration were used in a wavelength division multiplexing (WDM)-passive optcal network (PON) system to investigate their effects on channel capacity and signal quality. Because of its scalability, energy efficiency, high capacity, low cost, and flexibility of data transfer ability, various Raman configurations are applied in different position to measure the output power. We used various techniques to evaluate the system performance such as varying the length of an optical fiber from 10 to 100 kms, number of users by increasing 8 to 16 channels. Various channel spacings are utilized in an 8 and 16 channels WDM system to calculate the system's bit error rate (BER) and signal-to-noise ratio (SNR). Another key concern is the high data rate and to achieve the maximum transmission speed. We get the maximum data rate of 128 Gb/s by 8 channels and 192 Gb/s by 16 channels. The maximum BER was 10-9and noise level was -6.35 dBm associated ...
2019
In this paper, experimental work is performed on hybrid TDM/WDM Gigabit Passive Optical Network by replacing the last mile optical fiber with Free Space Optical channel. A Hybrid GPON system is a more intelligent choice of today’s passive optical networks because it provides benefits of both TDM as well as WDM technologies at Giga b/s. And the use of Free Space Optical channel will bring the last mile network to its peak performance. This paper demonstrates the performance of hybrid TDM/WDM GPON system utilizing FSO channel in terms of Quality of factor and Bit error rate along with eye diagrams. This system is a full bidirectional system working on 2.5Gb/s downstream and 1.244Gb/s upstream transmission. The system is using varying lengths of FSO channel to analyze the GPON network performance. The simulation results using Optisystem v.15 verify the fully functional bidirectional transmission of FSO link between OLT and ONU and achieve BER of the order of 10^–16 and 10^–12 at a distance of 100 m for both upstream and downstream respectively.