Configurable Optical Assemblies in Intelligent Cables
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current optical communication systems with electrical integrated circuits (ICs) are inflexible, as they require multiple physical photonic circuits to support different optical configurations and links, limiting their ability to adapt to various polarization mode dispersion types and bidirectional ports.
Innovation Solution
The integration of a configurable optical assembly within optical cables, utilizing ribbons with both optical fibers and power/communication wires, allowing external controllers to dynamically reconfigure the optical assembly for different functions, such as switching, filtering, and amplification, via power and signal routing through pluggable connectors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple physical photonic circuits are added to support different optical configurations, then the system can support diverse optical functions, but the device complexity and inflexibility increase
Solution Approach 1:
A single photonic circuit is designed to perform multiple optical functions (PMD compensation, optical switching, wavelength routing) through dynamic reconfiguration. The circuit includes reconfigurable components such as optical switches and tunable filters that can be programmed to perform different functions based on system requirements, eliminating the need for multiple dedicated physical circuits for each function.
Solution Approach 2:
The photonic circuit incorporates dynamically reconfigurable elements including optical switches with controllable connection states, tunable filters with adjustable center wavelengths, and variable optical attenuators. These components can be reconfigured in real-time through control signals to adapt to different optical communication scenarios, enabling a single circuit to replace multiple static circuits.
2Productivity
If electrical ICs are coupled on photonic chips to drive optical signals, then optical communication performance is improved, but the system becomes less reconfigurable
Solution Approach 1:
The system separates the optical signal processing functions into distinct modular components within the photonic circuit, including separate optical switches, filters, and attenuators. Each module can be independently controlled and reconfigured, allowing the electrical IC to program different combinations of these modules for various optical communication functions without requiring physical reattachment of components.
Solution Approach 2:
A control interface layer is introduced between the electrical IC and the photonic circuit components, consisting of control buses and configuration registers. This intermediary layer enables the electrical IC to dynamically program the photonic circuit's behavior through electrical signals, maintaining high reconfigurability while preserving the high-speed optical signal processing capability driven by the electrical IC.
3Ease of manufacture
If port associations are fixed on linecards, then manufacturing is simplified, but the ease of operation for different functions is reduced
Solution Approach 1:
The system changes the operational parameters of the photonic circuit through software programming rather than physical reconfiguration. By modifying control register values and configuration bits in the electrical IC, the port associations and optical functions can be dynamically adjusted to support different communication scenarios, maintaining simple manufacturing while providing operational flexibility.
Data Source
AI summary
Embodiments herein describe an intelligent optical cable that includes an optical assembly disposed between two pluggable connectors. In one embodiment, the optical assembly in the intelligent optical cable are coupled to the pluggable connectors via respective ribbons, where first ends of the ribbons are connected to the optical assembly while second ends of the ribbons are connected to respective pluggable connectors. In one embodiment, the optical assembly includes a photonic chip which performs an optical function on the optical signals propagating in the optical cable.