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Flexibility and fragmentation aware routing, core and spectrum allocation for hybrid AoD nodes in SDM-EONs
Optics Express
|October 14, 2022
Summary
A new hybrid optical backplane using MEMS and SOA switches speeds up configuration in elastic optical networks. This innovation reduces blocking probability and enhances network performance for latency-sensitive applications.
Area of Science:
- Optical networking
- Telecommunications engineering
Background:
- Space division multiplexing elastic optical networks (SDM-EONs) require high-capacity transmission with flexible, cost-effective nodes.
- Current Architecture on Demand (AoD) nodes face challenges with slow optical backplane configuration, hindering latency-sensitive traffic.
- Traditional micro-electromechanical systems (MEMS) based nodes have configuration speed limitations.
Purpose of the Study:
- To introduce a hybrid optical backplane for Architecture on Demand (AoD) nodes in SDM-EONs.
- To enable faster configuration times for AoD nodes, addressing latency-sensitive requests.
- To propose new metrics for node switching flexibility and link configuration speed.
Main Methods:
- Developed a hybrid optical backplane integrating micro-electromechanical systems (MEMS) and semiconductor optical amplifier (SOA) switches.
- Proposed quantitative measures for node switching flexibility and link configuration speed.
- Introduced a routing, spectrum, and core allocation algorithm aware of flexibility and fragmentation, alongside an AoD synthesis algorithm.
Main Results:
- The hybrid AoD nodes with spatial lane change capability significantly reduce network blocking probability.
- Performance improvement of 32.8% was observed for AoD networks using the hybrid backplane compared to traditional MEMS-based AoD.
- Hybrid AoD nodes offer better control over wavelength selective switch (WSS) ports compared to traditional Reconfigurable Optical Add-Drop Multiplexers (ROADMs).
Conclusions:
- The proposed hybrid optical backplane effectively addresses the configuration speed limitations of AoD nodes in SDM-EONs.
- This approach enhances network performance and reduces blocking probability, making it suitable for latency-sensitive applications.
- The hybrid architecture provides a more flexible and controllable node design compared to existing solutions.
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