Objetivo
Main Objective
Transparent photonic networks impose high cross-talk requirements on the components used, whereas the integrated devices which can provide the functionality required in these networks in a compact and cost-effective way usually suffer from relatively high cross-talk figures. The main objectives are therefore:
-Development and experimental testing of an easy-to-implement phase-scrambling technique which will lead to a considerable reduction of cross-talk requirements on advanced components.
-Development and experimental testing of advanced semiconductor-based photonic integrated circuits (PICs): an 8-wavelength cross-connect, a 4-channel multi-wavelength laser and a 4-channel multi-wavelength receiver. These devices cover the key functions in the physical network infrastructure: signal generation, detection and switching.
Technical Approach
A small cross-connect test bed with bit-rate transparency will be developed; the network will support four 2.5 Gbit/s Direct Detection WDM-channels and four 622 Mbit/s channels, the latter being generated with an integrated multi-wavelength laser and detected with an integrated multi-wavelength detector.
A phase scrambling technique will be developed and tested experimentally. The application of phase-scrambling in order to avoid coherent accumulation of cross-talk is considered as a major breakthrough in order to close the gap between actual performance of advanced components and system requirements. With this technique present state-of-the-art (cross-talk values in the order of -20 dB) is sufficient to cascade at least 5 cross-connects without running into cross-talk problems. Research will be focused on finding an optimal scrambling format yielding the required reduction in coherent cross-talk levels with a restricted amount of spectral broadening which will degrade BER-performance through pulse broadening.
Advanced semiconductor-based photonic integrated circuits (PICs) will be developed and tested, including: an 8-wavelength cross-connect, a 4-channel multi-wavelength laser and a 4-channel multi-wavelength receiver. These devices cover the key functions in the physical network infrastructure: signal generation, detection, and switching.
The application of an integrated 8-wavelength cross-connect, as compared to a cross-connect assembled from discrete components, leads to a huge reduction of the number of fibre connections (four instead of more than fifty) and the cross-connect volume, and improves the reliability. Integrated multi-wavelength lasers and detectors are expected to become cost-competitive with non-integrated versions because of their inherent channel spacing accuracy in combination with a small device size.
Summary of Trial
There is no large scale trial in the project, but a test-bed will be set up for evaluation of integrated optical cross-connects, multi-wavelength components and the use of phase scrambling. This includes the use of a loop-back configuration which makes it possible to study aspects of cascadability.
Expected Achievements
The expected achievements of the project include:
-Establishing a test bed for testing advanced photonic cross-connects and multi-wavelength components.
-Establishing the use of phase scrambling to reduce cross-talk impairments in optical cross-connects.
-Development of a cross-connect simulation tool.
-Design, fabrication and testing of an 8-wavelength integrated cross-connect.
-Design, fabrication and testing of multi-wavelength lasers and receivers.
-Development of an 8-wavelength demultiplexer.
-Progress on polarisation independent semiconductor optical amplifiers.
Expected Impact
The project aims at bridging the gap between current system requirements on component cross-talk and present state-of-the-art performance of advanced integrated devices. It addresses research on improvement of advanced Photonic Integrated Circuits and on a novel cross-talk reducing scrambling method, and their testing in an experimental cross-connect test bed, which will support different bit-rates.
Main contributions to the programme objectives:
Main deliverables
Developed and tested advanced semiconductor based photonic integrated circuits.
Contribution to the programme
Information on optical networks and advanced photonic devices, particularly the problem of coherent cross-talk.
Key Issues
-Design and fabrication of complex photonic integrated circuits and multi-wavelength components.
-Cross-talk impairments, and reduction of cross-talk impairments in optical cross-connects and systems with cascaded cross-connects.
Ámbito científico (EuroSciVoc)
CORDIS clasifica los proyectos con EuroSciVoc, una taxonomía plurilingüe de ámbitos científicos, mediante un proceso semiautomático basado en técnicas de procesamiento del lenguaje natural. Véas: El vocabulario científico europeo..
CORDIS clasifica los proyectos con EuroSciVoc, una taxonomía plurilingüe de ámbitos científicos, mediante un proceso semiautomático basado en técnicas de procesamiento del lenguaje natural. Véas: El vocabulario científico europeo..
- ingeniería y tecnología ingeniería eléctrica, ingeniería electrónica, ingeniería de la información ingeniería de la información telecomunicación red de telecomunicaciones red óptica
- ciencias naturales ciencias físicas electromagnetismo y electrónica dispositivo semiconductor
- ciencias naturales informática y ciencias de la información software software de aplicación software de simulación
- ciencias naturales ciencias físicas óptica física del láser
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Programa(s)
Programas de financiación plurianuales que definen las prioridades de la UE en materia de investigación e innovación.
Programas de financiación plurianuales que definen las prioridades de la UE en materia de investigación e innovación.
Tema(s)
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Las convocatorias de propuestas se dividen en temas. Un tema define una materia o área específica para la que los solicitantes pueden presentar propuestas. La descripción de un tema comprende su alcance específico y la repercusión prevista del proyecto financiado.
Convocatoria de propuestas
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Procedimiento para invitar a los solicitantes a presentar propuestas de proyectos con el objetivo de obtener financiación de la UE.
Régimen de financiación
Régimen de financiación (o «Tipo de acción») dentro de un programa con características comunes. Especifica: el alcance de lo que se financia; el porcentaje de reembolso; los criterios específicos de evaluación para optar a la financiación; y el uso de formas simplificadas de costes como los importes a tanto alzado.
Régimen de financiación (o «Tipo de acción») dentro de un programa con características comunes. Especifica: el alcance de lo que se financia; el porcentaje de reembolso; los criterios específicos de evaluación para optar a la financiación; y el uso de formas simplificadas de costes como los importes a tanto alzado.
Coordinador
NN7 3EZ Gayton
Reino Unido
Los costes totales en que ha incurrido esta organización para participar en el proyecto, incluidos los costes directos e indirectos. Este importe es un subconjunto del presupuesto total del proyecto.