Optical Access Networks: A Comparison Study (original) (raw)

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.

Active optical access networks

Communications Engineer

INtrODUctION: bAcKGrOUND This chapter deals with the active optical access networks, usually referred to as AONs. In this type of optical access networks, sharing of optical fibers among users is implemented by means of active equipment, as opposed to the multiple-passive-splitter approach employed in passive optical networks-PONs-(Venieris, 2007). Generally speaking, an optical access network can be considered as the optoelectronic infrastructure installed in the access part of the telecom network, that is the part between the subscriber and the local exchange (Figure 1). This infrastructure contains both active equipment, (installed in the customer premises, the local exchange and sometimes in

Simulation and Performance Analysis of Passive Optical Networks (PONs)

The International Conference on Electrical Engineering, 2014

This paper aims to explain the design and planning of a passive optical networks (PON) which can build a fictitious environment allowing to study fiber to the home (FTTH) networks in depth and decide the optimal option for this environment. We design a network architecture based on FTTH systems with different bit rates (1.25 GB/s, 2 GB/s, 2.5Gb/s,5Gb/s and 10 GB/s). This architecture is targeted to deliver a very high speed data using optical communication between the edge nodes connecting the end users. This transmission allows the simultaneous delivery of triple play service (data, voice and video). In our design various data rates are studied. It has been observed that the proposed system is one of the most suitable methods concerning data rate. It is demonstrated that as we increase the data rate, the number of accommodated user's decreases due to high bit error rate. Also by increasing the distance of transmission, the system will be undesirable due to increasing the bit error rate.

Passive Optical Access Networks: State of the Art and Future Evolution

Photonics, 2014

In the very last years, optical access networks are growing very rapidly, from both the network operators and the research interests points of view. Fiber To The Home (FTTH) is already a reality in plenty of real contexts and there has been a further stimulus to the proposal of new solutions and the investigation of new possibilities, in order to optimize network performance and reduce capital and operational expenditure. A complete and systematic overview of passive optical access networks is presented in this paper, concerning both the hot research topics and the main operative issues about the design guidelines and the deployment of Passive Optical Networks (PON) architectures, nowadays the most commonly implemented approach to realize optical fiber links in the access networks. A comparison of advantages and disadvantages of different multiplexing techniques is discussed, with specific reference to WDM-based networks, almost universally considered as the enabling technology for future proof bandwidth requirements. An exhaustive summary is also given about the-state-of-the-art of modulation and encoding techniques recently proposed by the scientific community, as well as the open challenges (such as colorless and coolerless ONUs) for telecom companies and international standardization compliance.

Techno-economic comparison of optical access networks

Proceedings of 2005 7th International Conference Transparent Optical Networks, 2005., 2005

A techno-economic comparison of five different Optical Access Network (OAN) architectures is presented. We consider several novel techniques that we have presented and demonstrated in previous works, offering more efficient fiber use than Point-to-Point (P2P) networks as well as Power Splitting Passive Optical Networks (PS-PON). A total cost and cost-per-bandwidth value for the each architecture is calculated in order to have a fair comparison between them. Both CWDM and DWDM combined with bidirectional reflective Optical Network Units (ONU) have been demonstrated to decrease the CAPEX of the network.

Performance Evaluation of Hybrid Passive Optical Network

The explosive growth of Internet has led to a demand for high bit rates for home and office users and the increasing popularity of video-related services means that even higher bit rates will be required in the near future.Time Domain Multiplexed (TDM) PONs are a cost-efficient solution for providing high bandwidth to users.Combined with Wavelength Division Multiplexing (WDM), very scalable and flexible network architectures are possible.The main disadvantage of TDM PONs is that, since users share the available bandwidth, the total system bit rate is the sum of the bit rate guaranteed to each user. The increasing demand for higher user bit rates mean that the system bit rate will need to be very high, requiring expensive electronics and optoelectronics at the Central office (CO) and the Optical Network Unit (ONU)

Comparative Investigation of Passive Optical Networks

Passive Optical Networks (PON) can be a better solution for the networks accessed in the future, due to their property of high bandwidth availability and energy saving. PON is a point to multipoint mechanism and provides applications like data transmission and reception (IP), video and voice (triple play). For the support of symmetric, high-speed and perfect bandwidths for future services like high definition TV quality and traffic patterns that include video and image services other than voice and text, we require passive optical networks. This paper presents the architecture, PON technologies and detailed discussion on scope of various passive optical networks.

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.

Comparative evaluation of optical amplifiers in passive optical access networks

Indonesian Journal of Electrical Engineering and Computer Science, 2022

In this paper, the parameters of optical amplifiers are evaluated using numerical methods with the Optisystem software. The main objective of this evaluation is the implementation of an optical telecommunication architecture, able to push back the current limits, due to a more and more restricted bandwidth following a demand which does not stop growing. We start from a study of the classical architecture of an optical telecommunication network with an external modulation provided by the mach zehnder modulator, the non return to zero (NRZ) coding, a pseudo random bit generator and a continuous wave (CW) laser diode of frequency 193.1 THz. The results obtained show a transmission possibility at 30.8 dBm and an output power of 25 dBm (316 mW) with an electrical rate signal to noise (SNR) and optical rate signal to noise (OSNR) beyond 34 dBm. The successive integration of the different amplifiers will improve these results with a gain of more than 10 dBm and also provide a better signal quality.