By Topic

IEE Colloquium on Optical and Hybrid Access Networks

4-5 Mar 1996

Filter Results

Displaying Results 1 - 23 of 23
  • Customer facing optical plant-a design philosophy

    Publication Year: 1996, Page(s):5/1 - 5/8
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (344 KB)

    The access network, traditionally defined as the part of the telecommunication network between the local exchange or central office and the customer premises, has to date largely comprised of point to point copper pairs, a technology which has been well established over the past 50 years. The cost of renewing and maintaining this network is high and the level of emerging digital technologies is pu... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A vision for PON systems-the WOTAN ACTS project

    Publication Year: 1996, Page(s):20/1 - 20/4
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (332 KB)

    The wavelength-agile optical transport and access network (WOTAN) AC029 ACTS project investigates optical networks and nodes capable of providing flexible bandwidth end-to-end transmission paths across a cost effective integrated, optical and electrical access and core network. The paper details key broadband passive optical network (BPON) access and optical core sub-systems and discusses future n... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Optical and hybrid access networks: a review of roadblocks and opportunities at the physical layer

    Publication Year: 1996, Page(s):4/1 - 4/6
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (372 KB)

    A number of potential `roadblocks' encountered in the physical construction of optical and hybrid access networks are reviewed. Examples are drawn from UK experience of differing access network cable infrastructures. Solutions are listed for copper pair, optical fibre and coaxial cable networks showing that few, if any, of the problems are insurmountable View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A reflective modulator based on silicon micromechanics

    Publication Year: 1996, Page(s):10/1 - 10/4
    Cited by:  Papers (1)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (232 KB)

    Many applications display a distinctly asymmetric traffic profile. Large traffic volume, for instance video data, travels in the downstream direction but only moderate bandwidth is carried in the opposite direction (service requests, telemetry, POTS). Therefore, solutions that trade reflective modulation speed for a cost advantage can be very attractive. It has been noted that a Fabry-Perot resona... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • WideGain access system

    Publication Year: 1996, Page(s):19/1 - 19/5
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (268 KB)

    We present a commercial access and transmission fiber optic system optimized for the fiber to the curb (FTTC) and fiber to the office (FTTO) applications. The system concept is based on the incorporation of time division multiplexing (TDM), subcarrier multiple access (SCMA) and coarse wavelength division multiplexing (WDM). This system architecture provides wide applications flexibility and gracef... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Life cycle costs comparison and sensitivity analysis for multimedia networks

    Publication Year: 1996, Page(s):3/1 - 3/6
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (348 KB)

    The provision of multimedia services implies a series of new requirements that the present telecommunication networks are not able to meet. Therefore the next-generation information infrastructures, commonly referred to as “information superhighways”, has to be put in place. This article focuses on the access segment of the network, that is the connection of the users to the first netw... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Interferometric noise in dense WDM routed passive optical networks

    Publication Year: 1996, Page(s):7/1 - 7/4
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (172 KB)

    Analysis of the effect of phase-induced interferometric noise in dense WDM routed networks arising from the imperfect filtering of signals is presented. Noise suppression due to the non-alignment of laser sources is considered along with the channel (wavelength) separation and overall bit-rate. For given operating conditions, the closest channel separation for satisfactory performance can be deter... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A low cost, transparent, high gain electro-optic amplifier for fibre access networks

    Publication Year: 1996, Page(s):9/1 - 9/4
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (268 KB)

    Passive optical network (PON) system architectures are an excellent solution to fibre access but are limited in range and fan-out by the optical power budget especially as the bit rate increases. More flexible architectures can be achieved by inserting optical gain but most solutions propose the use of erbium doped fibre amplifiers (EDFA) which are expensive and have high power consumption in this... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Access networks: an European perspective

    Publication Year: 1996, Page(s):23/1 - 23/4
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (252 KB)

    Provision of broadband access to all potential users is perhaps the major unresolved barrier to the realisation of the information society in Europe. The growth in demand for broadband telecommunications networks and services is inexorable, but will follow an uncertain timetable. The unresolved challenge in the provision of the broadband infrastructure, which will be necessary to support the new a... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A first description of the hybrid fiber coax concept in the framework of the ACTS project ATHOC

    Publication Year: 1996, Page(s):18/1 - 18/5
    Cited by:  Papers (2)  |  Patents (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (216 KB)

    The paper describes the ACTS ATM Applications over Hybrid Optical Fiber Coax (ATHOC) project and the ATHOC physical layer for the hybrid fibre coax (HFC) access network. It also includes reference to ongoing standardisation (IEEE 802.14, DAVIC, and DVB). The main objectives of ATHOC are to build a prototype of an ATM-based HFC system, and to demonstrate on it PC-oriented data services (e.g. Intern... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The cable comms perspective on the access network. Hybrid access systems

    Publication Year: 1996, Page(s):15/1 - 15/5
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (260 KB)

    The cable comm perspective on access systems could be seen as a different one from a PTO's view. Historically, the PTO view split the network into two parts for the local network, switch and outside plant. This lead to a different view from the operating side on the two parts. Cable comm companies, especially in the UK, where the industry is relatively new, have not been constrained by historical ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • ATM super PON dimensioning for residential and business services

    Publication Year: 1996
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (232 KB)

    First Page of the Article
    View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Overview of optical access technologies

    Publication Year: 1996, Page(s):6/1 - 6/7
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (372 KB)

    This paper provides an overview of optical access technologies, starting with a brief look at communications domains where fibre has already achieved dominance, followed by a statement of access network requirements. The paper then overviews optical technologies that are important to the access network, using a Broadband Passive Optical Network architecture as an example View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Medium access control layer performance modelling for APONs

    Publication Year: 1996, Page(s):21/1 - 21/6
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (324 KB)

    Combining asynchronous transfer mode over a passive optical network (APON) can provide broadband services as defined by the International Telecommunications Union (ITU). The medium access control (MAC) layer is of primary importance to the access scheme as it controls the flow of traffic in the access network. It is therefore beneficial to model MACs for APONs to provide a performance evaluation w... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • ATM in the copper access network considerations for carrying a ATM over copper

    Publication Year: 1996, Page(s):11/1 - 11/5
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (272 KB)

    Asynchronous transfer mode (ATM) has principally been developed and optimised for transmission over optical fibre and, therefore, traditional access technologies may well be a limiting factor for ATM performance. Widespread fibre deployment to the home, however, is currently prohibitive because of the high investment costs required. Instead, most of these traditional access options are likely to r... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Digital holographic tuning mechanism for WDM

    Publication Year: 1996, Page(s):8/1 - 8/5
    Cited by:  Papers (1)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (228 KB)

    A novel non-mechanical and digital tuning mechanism suitable for receivers and sources in a WDM network has been developed. It is inherently stable, precise and repeatable, and has the additional advantages of polarization insensitivity, optical transparency, and the potential for low insertion losses. A wavelength filter with a channel spacing of 1.3 nm, tunable over 82 nm has been successfully d... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Developments and prospects for cable modems

    Publication Year: 1996, Page(s):16/1 - 16/5
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (316 KB)

    This paper outlines the evolution of cable modems and the services they will enable cable TV operators to provide. The capabilities and limitations of current cable modems is described as well as the technical possibilities for improving the network to serve much larger numbers of subscribers and for building modems of much higher data rate. The likely evolution of services carried is also conside... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Supporting digital video broadcast on optical access networks

    Publication Year: 1996, Page(s):22/1 - 22/4
    Cited by:  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (224 KB)

    FITL networks are characterised by the introduction of optical fibre in the access network, up to a certain point where the end users can be reached using standard telephony twisted pair carrying all services. The fibre penetration level (i.e. low for to the home the fibre is reaching) is determined by the available loop technology at the time of deployment, the service mix and take ratio, and of ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Copper pair transmission: the trade-off between reach and capacity

    Publication Year: 1996, Page(s):12/1 - 1210
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (372 KB)

    A pure fibre network to every home seems some years away, because of the high capital investment and long time required to install new cables. So, for high data rate services, many telcos are considering hybrid networks of optical fibre and existing twisted copper pairs. The service data rate is then limited by the copper section. This paper discusses the information capacity available under the d... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The Brunel/Cable Corporation HomeWorker network trial

    Publication Year: 1996, Page(s):17/1 - 17/5
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (284 KB)

    We describe HomeWorker network and the results from a pilot study that has been undertaken by Brunel University and The Cable Corporation to determine the performance of the system and its impact on working practice. The HomeWorker network is based on existing cable television infrastructure and provides a local area network over a metropolitan area. It is a CSMA/CD bus based network working at 50... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Fibre access architectures for broadband services-a review of the available technologies

    Publication Year: 1996, Page(s):1/1 - 1/4
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (384 KB)

    This paper presents an overview of access networks; in particular their evolution to residential broadband. It analyses service migration and global operator service/technology trials. Some potential access technologies are considered which may be needed to enhance existing networks for future requirements View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Development of the access network

    Publication Year: 1996, Page(s):13/1 - 13/4
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (224 KB)

    In upgrading the access network to be broadband capable, re-use of existing infrastructure is essential to manage this risk. FTTCab (fibre to the cabinet) has been proposed as an architecture that can make the development to broadband economic. The FTTCab architecture uses optical fibre to an active node sited at the primary cross-connect point (PCP) in the copper access network. The existing copp... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Technical and techno-economical dimensioning of HFC networks for distributive and interactive services

    Publication Year: 1996, Page(s):2/1 - 2/8
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (452 KB)

    Hybrid fibre coax (HFC) are foreseen by many operators to be a fast way to enter the full services network era. But what are now the most requested services? It is clear that PSTN/ISDN services are widely spread through the telecommunity. The fast growth of Internet access demand is a good exhibit. Broadcast analogue and digital TV programs as well as limited interactivity are also well perceived ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.