Showing papers on "10G-PON published in 1991"

Evolution of fiber in the residential loop plant

Abstract: The current status of fiber in the subscriber loop in the U S is reviewed. Efforts to promote a standardized approach are briefly examined. Issues involved in powering the distributed optoelectronic curbside terminals, designated optical network units (ONUs), adding video capability when, where, and as needed, and developing strategies for evolving narrowband fiber to the curb (FTTC) to broadband FTTC, including fiber extended to the home if warranted, are discussed. Loop architecture of the future are considered, and business issues are addressed. >

The future of fiber-optic computer networks

Abstract: The author discusses research activities in the area of third-generation (all-optical) fiber-optic networks and where they are heading. Applications, the era of single unrepeated links, the characteristics of fiber paths in networks, forms of addressing, overall network throughput capacity, technologies, protocol layers, and making the communication layers invisible are discussed. >

Computer networks and distributed systems

Abstract: Three major justifications for distributed computing-sharing physically distributed resources, combining computers for fast solutions, and providing reliability through replication-are discussed. Distributed computing milestones from 1969 to 1991 are examined, focusing on the ARPAnet national research network, Ethernet and token-ring local area networks, and workstation networks united by distributed systems software. Three themes that dominate current trends in distributed systems and computer networks are examined. They comprise tapping the immense data-carrying potential of optical fibers, efficiently using tightly coupled networks of thousands of computers, and making network access inexpensive so many people will buy services. Developments for the next decade are predicted by extrapolating from these trends. >

Powering issues in an optical fibre customer access network

Abstract: The authors give a review of alternatives for powering equipment at the customer end of an optical customer access network (CAN). The alternatives include: local, network, hybrid and optical powering. Comparisons are based on the following aspects; operation and maintenance costs, technological constraints, expected problems, safety, and power requirements. Related issues, such as sizing of backup battery, are discussed. Descriptions of a demonstration unit for local powering and optical CAN trials by Telecom Australia are given. >

A guide to data communications: high-speed local-area networks

Abstract: Local area network (LAN) classifications based on speed are defined. The use of optical fiber, the fiber distributed data interface (FDDI) multitoken protocol, linear buses, and the dual queue distributed bus (DQDB) is examined. LAN limits are discussed. Supercomputer LANs and ultra-gigabit networks are considered. The so-called mass of glass, a wavelength-division-multiplexed architecture consisting of a passive optical broadcast medium, is discussed. Future issues and trends are indicated. >

Passive signalling in optical fibre multiple access networks

Abstract: In a conventional optical fibre network, whether loop, ring, tree or star, a receiver and an optical source are normally provided at each terminal. However, there are a number of situations in which a multiplicity of active sources is unnecessary or uneconomic, or possibly even leads to degraded performance of the network. The paper summarises how one or two optical sources can be shared by many users in various configurations of multiple access networks.

Passive optical multi-access networks for telecommunications

Abstract: Passive optical networks (PONs) are the most effective way of delivering narrowband services to customers via fibre. PONs also provide an evolutionary path to the delivery of future broadband services. The paper outlines the present stage of development of PONs for use in British Telecom's access network and describes PON architectures for delivering services to both business and residential customers. The upgrade options for providing future broadband services are discussed, and the technology trial at Bishop's Stortford is described.< >

The design of a generic TDMA sub-system for passive optical networks

Abstract: The TPON system, designed at British Telecom Research Laboratories, incorporates an opto-electronic sub-system which provides a transparent data transport system and optical interface for a passive optical network. A generic sub-system has now been designed which could be incorporated into a variety of system designs for passive optical networks. The authors describe the design and performance of the system, and the trade-offs that were necessary in its definition. >