Large optical integrated switches

Projektinformationen

LOIS

ID Finanzhilfevereinbarung: AC306

Startdatum

Enddatum

Finanziert unter

• Specific programme of research, technological development and demonstration in the area of advanced communications technologies and services, 1994-1998

Gesamtkosten

Keine Daten

EU-Beitrag

Keine Daten

Koordiniert durch

Alcatel Alsthom Recherche
France

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Verwertbare Ergebnisse

NxN Space Switches

Alcatel activity : The aim of Alcatel within the ACTS LOIS (AC306) project was to demonstrate the feasibility of large-scale optical space switches. While previously reported approach world-wide proposed monolithic or hybrid planar integration of the whole N x N switching matrix, a new concept has been developed within LOIS which is expected to provide improved modularity and industrialisation potential . It is based on three building blocks which consist of 1 x N passive power splitter (planar or fibre-based), a flexible perfect shuffle (fibres in flexible foils), and planar Nx1 space switch. Both the passive splitters and the flexible perfect shuffles are today available from several suppliers. More specific are the Nx1 elementary space switches which use an opto-hybrid approach involving flip-chip mounted GC-SOA's/SiO2/Si. The technology used for these switch fabrication has potential not only for fibre switching (few ms switching time would be required) but also for packet switching in WDM regime, due to high gate speed (ns range) and SOA's gain clamping. The fabricated devices fabricated and delivered within the project are at the "state-of-the art" (post dead line at OFC'00) and paves the way towards a number of OE advanced products to be used in the next generation WDM systems. Additionally, the proposed modular approach for the NxN switches integration makes sense in a techno-economical perspectives, for next generation switching products introduction.

Feasibility of 1x8 micro-mechanical space-switches for optical networks

LETI/CEA activity : The feasibility of 1xN micro-mechanical space-switches based on moving waveguides has been demonstrated. This kind of space-switches exhibit determinant advantages for applications such as protection, add-drop systems or network reconfiguration in optical communications. 1x2 switches and larger 1x8 switches have been fabricated. Within the project, these 1x8 switches have been used as elementary components to build larger 8x8 cross-connect matri