Enhancing ROADMs with a Modified Broadcast-and-Select Architecture

Traditional ROADMs and WSSs face limitations in efficiently supporting Point-to-Multipoint (P2MP) optical networks. To overcome these challenges, we propose a modified Broadcast-and-Select (B&S) ROADM architecture that improves spectrum efficiency and minimizes blocking.

🔹 Key Innovations:
✅ Linear Hub-Ended P2MP Trees – Ensures a streamlined routing process by restricting light-trees to a single linear path with a hub at one end. This minimizes spectrum occupation compared to arbitrary branching structures.

✅ Passive Coupler Integration – Allows signals on the same wavelength but different DSCs to merge seamlessly without requiring extra WSS ports, maintaining hardware efficiency.

✅ Optimized Spectrum Utilization – By limiting route complexity, this architecture significantly reduces the number of required wavelengths, enhancing overall network efficiency.

This approach paves the way for scalable, cost-effective, and high-performance optical networks, making P2MP deployments more practical in next-generation infrastructure.

💡 What are your thoughts on this modification? Let’s discuss in the comments! 👇

#OpticalNetworks #ROADM #WSS #P2MP #TelecomInnovation #SpectrumEfficiency