Technology of WARP-5
In order to realise its challenging objectives for next-generation metro-access networks, WARP-5 is based on the following key technologies.
- Flexible Transceivers for Optical QAM
Coherent detection enables the network units to access higher-order modulation formats with high spectral efficiency. WARP-5 will employ low-cost InP modulators to generate optical QAM with up to 16 levels in order to enable a high guaranteed per-user data rate of up to 10 Gb/s. Together with a narrow channel spacing of 5 GHz and the ultra-dense WDM architecture, a massive network capacity beyond 1 Tb/s can be achieved. Flexible transceivers allow the optimal utilisation of photonic hardware under the umbrella of dynamic and elastic access networks.
- Extension of PON Loss Budgets though Self-Amplification for Coherent Ultra-Dense WDM
Means of optical amplification for coherent ultra-dense WDM will support a loss budget extension over the entire optical transmission band in order to reach compatible loss budgets of 60 dB and more. Self-amplification provides a fully passive solution in view of long-reach, high-split metro-access PONs. Further conventional amplification schemes will be incorporated to maximize the compatible loss budget in the most cost- and energy-efficient way.