With the deregulation of the telecommunication and electricity markets, great deals of new operators providing some innovative services have appeared. In the telecommunications field, the promise of broad-band internet access with easy installation procedure at low cost may help to gain new customers. The Power Line Communication (PLC) technology is a way to fulfill this function. PLC uses the ...

Metasurfaces are two-dimensional structures enabling complete control on light amplitude, phase, and polarization. Unlike plasmonic metasurfaces, silicon structures facilitate high transmission, low losses, and compatibility with existing semiconductor technologies. We experimentally demonstrate two examples of high-efficiency polarization-sensitive dielectric metasurfaces with 2π phase control...

Twenty years after the discovery of high temperature superconductors, practical superconducting wires made of these materials are now being manufactured, and trials of electrical and industrial applications including a train supported by magnetic levitation, a transmission line, a ship ’ s engine, and many others are being implemented. High temperature superconductors have again taken central s...

This paper presents a novel fault location method for series compensated transmission lines. It is established based on synchronized voltages sampling and Thevenin impedance from both ends of series compensated transmission line. The method is based on the use of phasor measurement units (PMU) technology which is aimed to be independent of current measurements, fault type, fault resistance, fau...

O -line routing in backbone telecommunications networks is a combinatorial optimization problem well-suited to iterative search methods. In this paper, a number of further heuristics applicable to the routing problem are introduced and evaluated. The presented results show that these methods signi cantly improve the search for solutions, particularly when on-line performance is considered. The ...

The essential requirements for establishing a low-loss and high-speed telecommunication line using optical fibers are high performance and quality splicing technology. The simple connection of optical fibers using optical connectors and mechanical splices is increasing. However, the fusion splice is needed for long-haul and high-capacity trunk communications such as submarine optical fiber cabl...

This paper proposes an approach to the management of traffic in telecommunication networks. It was motivated by the growing need for Intelligent Network Management in current Telecommunication Networks such as PSTN, ISDN or transmission networks. The goal is to constantly act upon the network in order to control the traffic flow, trying to maximize the number of calls that reach destination or ...

The capacity of the global communications network is being progressively increased to handle the rapid growth in telecommunication traffic generated by the Internet. Fujitsu supplies submarine optical cable systems that can provide the huge capacity and short transmission delay required by carriers. There are two ways to increase capacity: construct a new submarine cable system or upgrade the e...

Recently, the acceptance of micro electromechanical systems (MEMS) technology is growing in various areas such as medical, optical, automobile and telecommunication. In realizing the needs in MEMS, techniques derived from mechanical engineering plays an essential role in the determination of geometric design variables and process parameters, experiments in fabrication and the elastic and plasti...