Modular Optical Patch Panel for Scalable ROADM Connectivity
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Solution Overview
Problem
Managing the increasing complexity and scalability of optical connectivity in reconfigurable optical add-drop multiplexer (ROADM) nodes, particularly in early stages of optical network build-out, where high-degree nodes are expensive and not always necessary, making it challenging to deploy infrastructure that can support varying network demands.
Innovation Solution
A scalable, modular optical mesh patch panel using preconfigured modular optical interconnect blocks that enable simplified connectivity among optical components, allowing for immediate optical connectivity and easy expansion as the number of components grows, supporting various configurations of multi-degree optical nodes with add/drop multiplexer modules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If high-degree optical nodes are deployed to support increasing network complexity and scalability, then the network can accommodate more channels and wavelengths, but the cost and infrastructure requirements increase significantly
Solution Approach 1:
The optical patch panel is divided into multiple modular slots that can independently accommodate different optical components (patch cords, adapters, connectors). This segmentation allows the system to scale by adding or removing individual slots rather than requiring complete node reconfiguration, thereby supporting network growth while maintaining manageable complexity.
Solution Approach 2:
The patch panel employs a dynamic configuration capability where optical connections can be reconfigured in real-time through software control. This allows the network to adapt to changing demands by dynamically rerouting wavelengths and channels without physical reconfiguration, enabling scalability while keeping the physical infrastructure relatively simple.
2Adaptability or versatility
If fixed add/drop capabilities are used in optical nodes, then the device structure is simpler and more cost-effective, but the network flexibility and reconfigurability are limited
Solution Approach 1:
The system implements dynamic add/drop capabilities through software-controlled optical switching matrices that can reconfigure wavelength routing in real-time. This allows the network to flexibly add or drop any channel as needed, transforming fixed-capability nodes into reconfigurable ones without requiring complex hardware changes at each node.
Solution Approach 2:
The optical patch panel design provides universal connectivity where a single modular platform can support multiple add/drop configurations simultaneously. Different slot combinations can accommodate various wavelength routing patterns, allowing the same physical infrastructure to serve multiple network functions and configurations.
3Adaptability or versatility
If extensive initial infrastructure is deployed to support future network growth, then scalability is ensured, but the initial cost and resource consumption increase
Solution Approach 1:
The modular slot architecture enables incremental deployment where only the number of slots needed for current requirements are installed and activated. As network growth demands increase, additional slots can be added to the patch panel without replacing the entire infrastructure, allowing capacity to scale with actual network needs rather than anticipating maximum future demand.
Solution Approach 2:
The patch panel design allows smaller configurations to be nested within larger ones. Initial deployments can use a subset of available slots, and as network requirements grow, additional slots are integrated into the existing structure. This nested approach enables the infrastructure to grow organically from a core configuration outward, avoiding the need to deploy the complete maximum-capacity infrastructure upfront.
Data Source
AI summary
A scalable, modular optical mesh patch panel includes a multi-slot receptacle configured to receive at least one of a first modular optical interconnect block and a second modular optical interconnect block that enable connectivity among one or more add-drop modules and/or respective degrees of a reconfigurable optical add drop multiplexer node (ROADM).