Our latest simulation results offer compelling evidence on the benefits of deploying flexible transponders in metro/regional networks.
🔧 Simulation Assumptions:
- OSNR degradation of 3 dB per 80 km in regional domains
- Adaptive modulation — lowered when OSNR drops below pre-defined thresholds
- OSNR margin benchmarked to 16-QAM thresholds
🧠Key Takeaways:
- Total transponder cost decreases with flexible transponders, even though P2MP units may be larger and costlier individually.
- P2P connections are significantly reduced, as shown in Figure 39.
- In Regional Domain A, when leaf nodes request up to 20 subcarriers:
- The number of P2P transponders is halved at a 0 dB OSNR margin.
- P2P nearly disappears beyond a 4.5 dB OSNR margin (≈120 km transmission distance).
- Yet, the cost minimum is not reached at this point due to temporary increases in flexible P2MP deployment.
- The network naturally shifts away from smaller-capacity transponders (4, 8, 16 SCs).
- Cost stabilizes at a 7.5 dB OSNR margin, aligning with optimal P2MP transponder usage.
💡 These findings reinforce the value of OSNR-aware adaptive modulation strategies. By dynamically adjusting capacity and transponder type, networks can achieve both cost efficiency and scalability — critical for future-proofing regional architectures.
#AllegroProject #FlexibleTransponders #P2MP #P2P #NetworkSimulation #OSNR #OpticalNetworks #TelecomEngineering #AdaptiveModulation #NetworkOptimization
