Optical orthogonal frequency division multiplexing (OOFDM) is one of the hottest optical communications technologies of today. The OCEAN project brings together world-class expertise to develop the OOFDM technology for applications in future optical access networks. The consortium consists of partners with the necessary know-how in research, mass production of electronic components, high-speed optical transceiver design and packaging, professional modelling of optical components and systems and system vendors . The overall objectives are to:
Develop world-first, commercially exploitable, cost-effective, versatile, >20Gb/s OOFDM transceiver modules with real-time performance monitoring and adaptive performance optimisation;
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Develop commercially exploitable, >20Gb/s OOFDM PON system prototypes with per user link parameter awareness and performance optimisation, as well as management system features for upgrading installed legacy access networks;
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Demonstrate OOFDM WDM PONs capable of supporting 32 wavelengths at 100GHz frequency spacing, >20Gb/s over >60km per wavelength channel with automatic and dynamic link performance optimisation.
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Undertake comprehensive lab trials of the developed OOFDM prototypes in a carrier-like environment for successfully providing real-time services at >1Gb/s per subscriber.
A number of innovative solutions will be proposed, optimised and implemented, which range from key component technologies, OOFDM transceiver design and system architecture. The major targeted innovations are:
- Development of optimised DACs/ADCs with suitable high-speed digital interfaces for FPGAs;
- Optimisation of real-time DSP algorithms to considerably reduce the logic element usage and implementation complexity to allow enhanced transceiver functionalities and performances;
- Novel OOFDM transceiver designs allowing low-cost components to be utilised but offering significantly improved signal capacity, enhanced system flexibility and performance robustness;
- Colourless OOFDM WDM PONs.
Towards the end of the project, the following achievements will be made: