2002 International Telecommunications Symposium

"Traditional formulation of resource access often leads to unfair blocking probabilities among distinct classes of services in multi-rate loss networks where full sharing polices are adopted. Classes demanding large amounts of bandwidth have blocking probabilities higher than those with low requirements. Moreover, wideband classes are also particularly...

"Currently Open Shortest Path First (OSPF) is the most commonly used and promising intra-domain internet routing protocol where packets are routed along shortest paths to the destination. The shortest path computation is based on some static link costs and the change of the paths only happens when existing link components become unreachable or when new...

"The use of the optical injection locking technique for information processing in WDM systems is experimentally investigated. As the locking bandwidth is controlled by the amount of injected optical power, only the WDM carrier within a given locking range induces the locking of the slave semiconductor laser and is properly transmitted. The other carriers...

"The transient characteristics of optical phase-lock loops intended for receiver applications in wavelength division multiplexing systems is theoretically analyzed in this work. As the locking bandwidth is controlled by a proper project of the feedback loop, a WDM carrier within the locking range can induce the locking of a slave semiconductor laser and...

"By using a highly selective RF filtering for optical packet header frequency recognition, we have obtained significant improvement in optical switching function. Ultrafast switching (\u00b5s timebase) is realized by using RF frequency tones, inserted in the optical packet that carries a digital payload. The RF header is detected at optical node input,...

"High costs generated when deploying Optic Fiber Networks at the transport level, together with other factors that avoid PONs arriving to the home and/or office, have impulsed the design and implementation of partially optical networks (FITL), including an alternative that uses infrared light. This work explores the basis of the new infrared access...

"Traditional approaches to wavelength routing network design divide it into two separate problems: virtual topology design (VTD), in which best connections among nodes are derived from traffic demand; and routing-and-wavelength assignment (RWA), in which physical paths are accommodated in the physical topology to support the requested connections. We...

"The influence of cross-phase modulation (XPM ) and fourwave mixing (FWM) on the performance of WDM system s using dispersion-shifted fibers (DS) and non-zero dispersion shifted fibers (NZ-DS) are studied and the role of these effects in the penalty for different cases are discussed."

"Conventional optical WDM networks calls for optoelectronic conversion for each wavelength in every node plus a large management effort for proper packet routing. All-optical networks are still unavailable. Here, a new architecture is described where the optical transport is done without conversions (except at extreme nodes), and with minimal routing...

"Wavelength division multiplexing is the most effective way to take advantage of the huge transmission bandwidth provided by the optical media, but the possibility of increasing transmission speed by sharing the same physical link with many optical channels is not the only feature allowed by this technology. Wavelength division multiplexing can also be...