Modular ROADM Adapter Layer for Flexible Optical Network Configuration
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Solution Overview
Problem
Optical communication networks face limitations in flexibility and efficiency due to fixed functionality in existing nodes, which restricts the configuration and scalability of optical add-drop multiplexing and wavelength division multiplexing systems.
Innovation Solution
A multi-channel optical layer system with a customizable adapter layer that learns functions and specifications from a function layer, allowing it to configure itself for interoperability between the network interface and function layers, supporting various optical functionalities such as amplification, switching, and monitoring, and enabling modular reconfigurability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If fixed functionality is used in existing optical nodes, then device complexity is reduced and manufacturing is easier, but flexibility and adaptability of the network configuration are limited
Solution Approach 1:
The optical node is divided into separate functional modules including wavelength selective switches (WSS), optical supervisory channel (OSC) functionality, pre-amplifiers, boosters, optical channel monitor (OCM) functionality, and other specialized cards. Each module performs a specific function and can be independently configured, removed, or added to the system.
Solution Approach 2:
The optical node is designed with a universal architecture that can accommodate multiple types of functional cards in standardized slots. The system can be configured to perform various functions such as add-drop multiplexing, wavelength switching, optical monitoring, and amplification using the same physical platform with different card combinations.
2Adaptability or versatility
If multiple separate cards are used for different functionalities, then flexibility and configurability are improved, but device complexity and cost increase
Solution Approach 1:
Multiple functional capabilities are combined into integrated card designs that can be inserted into standardized slots. For example, a single card may provide both WSS and OCM functionality, or a card may provide both pre-amplifier and booster functionality, reducing the total number of components while maintaining configurability.
Solution Approach 2:
The system allows dynamic reconfiguration of functionality by enabling users to add, remove, or replace functional cards based on network requirements. The node can be reconfigured from a simple pass-through configuration to a full add-drop multiplexer configuration by changing the card组合, providing flexibility without requiring a complete system redesign.
3Adaptability or versatility
If all functionalities are built into every node, then adaptability is maximized, but cost and hardware usage increase due to unused components
Solution Approach 1:
The system segments functionality into discrete, pluggable cards that are only installed when needed. A node can be configured with only the essential components for its specific role in the network, such as a simple repeater node requiring only amplification cards, while a terminal node requires full add-drop multiplexing capability with WSS and OCM cards.
Solution Approach 2:
Each node is configured with the specific functionality required for its local role in the network rather than providing all possible functions universally. The system allows different nodes to have different functional configurations optimized for their specific purposes, reducing overall hardware usage while maintaining adaptability where needed.
Data Source
AI summary
Example embodiments are in a form of a system, corresponding electronics card (or apparatus), or corresponding method. Some embodiments include a multi-channel optical layer system. According to some embodiments, the system may include a network interface layer, an adapter layer, and an optical function layer. The adapter layer may learn functions and/or corresponding specifications from the function layer. The adapter layer may configure the adapter layer itself to interoperate between the network interface layer and the optical function layer. The adapter layer may provide flexibility in the size of configured functionality. The adapter layer may reduce cost of configuration (or reconfiguration) because functions may be discretized. New markets may be reached because of this reduced cost, as well as due to smaller size configurations (of hardware and software), reduced electronics, reduced power, and improved thermal cooling requirements for lesser-developed network configurations.