As the cover range for the radio cells becomes gradually smaller than before, the procedures for mobile terminals call setup and control become complicated due to the high handoff frequency. The broadcast nature of WDM star couplers makes the handoff scheme easier and reduces the number of reconnections. In this study, we proposed a channel allocation algorithm, called pre-empted assigned offse...

This paper proposes new dimensioning methods in an MP/WDM (multi-protocols over WDM) network with static wavelength paths. The network has the following aspects; (1) limited to the near future, the network uses costly OXCs (optical cross-connects) only to replace active paths into the spare paths when a fault occurs, and, (2) every active path does not produce a pair with a spare path since res...

This paper presents a simulation methodology for performance assessment of wavelength division multiplexing (WDM) systems using directly modulated quantum-well lasers and optically preamplified direct detection receivers. The methodology is based on a pure semi-analytical method which combines noiseless WDM transmission simulation with noise analysis in those systems. Using this approach, we di...

Reconfiguration of logical topologies with minimum traffic disruptions in reliable WDM-based mesh networks, " Photonic Net-Virtual fiber configuration for dynamic light-path establishment in large-scaled optical networks, " Photonic Network Communi-Proposal of procedures to reconfigure logical topologies in reliable WDM-based mesh networks, " in Proceedings of SPIE Asia-Virtual fiber configurat...

This letter considers the wavenumber-division-multiplexing (WDM) scheme that was recently presented by Sanguinetti et al. (2022) line-of-sight communications between parallel (i.e., side-by-side) spatially-continuous electromagnetic segments. Our aim is to analyze performance of WDM, combined w...

We propose and demonstrate a 3 × full multiple-input multiple-output (MIMO) fiber–wireless system in the W-band with wavelength-division multiplexing (WDM) polarization-division (PDM) radio-over-fiber (RoF) transmission capability. The is realized using two highly stable RoF links based on optical self-heterodyne method PDM one of links. experimentally confirm satisfactory performances for MIMO...

MPLS (Multi-Protocol Label Switching) over WDM (Wavelength Division Multiplexing) networks are gaining significant attention due to the efficiency in resource utilization that can be achieved by jointly considering the two network layers. This paper addresses the design of MPLS over WDM networks, where some of the WDM nodes may not have packet switching capabilities. Given the WDM network topol...

The future International Thermonuclear Experimental Reactor (ITER) is a complex installation that will require permanent monitoring and frequent maintenance operations. The high-gamma dose rates, the high neutron fluence and other radiological hazards call for the use of remotehandled equipment. The management of heavy umbilicals connecting the control systems with the remote tools is therefore...

1 Introduction In recent years, the increasing popularity of the Internet leads to a rapidly rising demand for network bandwidth. Optical networks offer much higher bandwidth than traditional networks due to huge bandwidth of fiber. The currently attracted technology to use effectively the bandwidth of optical fiber is wavelength division multiplexing WDM. The optical spectrum of is divided int...

Dynamic Bandwidth Allocation is a major open research challenge in the migration of Passive Optical Network (PON) systems towards Long Reach PON, especially when hybrid WDM/TDM is used (LR WDM/TDM PON). New and efficient solutions for Dynamic Bandwidth and Wavelength Assignment are sought to address two main critical issues of such PON systems: how to schedule the transmissions over multiple wa...