Optical Fiber Ribbon Indexing for Passive Network Routing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Passive optical networks face challenges in efficiently routing and splitting optical fibers to reduce network complexity and cost while maintaining high bandwidth and reliability, particularly in delivering high-speed communication services without active electronic devices.
Innovation Solution
The implementation of an optical network architecture that includes indexed optical fibers, indexing terminals, and splitter terminals, where optical fibers are indexed in specific directions and drop off at intermediate locations to connect to optical splitters, enabling robust and flexible routing configurations, including bidirectional indexing and ruggedized connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If optical fibers are routed through intermediate indexing terminals with drop ports, then network flexibility and adaptability are improved, but device complexity increases due to multiple terminals and routing configurations
Solution Approach 1:
The optical network is segmented into multiple indexing terminals along the cable arrangement, with each terminal providing independent drop ports. This segmentation allows flexible routing configurations where optical lines can be dropped at different locations without affecting the entire network, thereby improving adaptability while managing complexity through modular design
Solution Approach 2:
Indexing terminals serve as intermediary devices between the main optical cable arrangement and subscriber drop lines. These terminals mediate the routing by providing standardized interfaces and drop ports, simplifying the overall routing complexity while maintaining network flexibility through their intermediate positioning
2Adaptability or versatility
If bidirectional indexing is implemented with multiple optical lines, then network versatility and service capability are improved, but manufacturing and installation complexity increase
Solution Approach 1:
The indexing terminals are designed with universal functionality to handle multiple optical lines in both directions. Each terminal can index optical lines in first and second directions with separate drop ports, allowing the same terminal design to serve multiple routing configurations and service types, thereby improving versatility while standardizing manufacturing and installation procedures
3Reliability
If optical splitters are placed external to indexing terminals, then network reliability is improved by isolating splitting function, but device complexity and connection points increase
Solution Approach 1:
The optical splitter function is extracted from the indexing terminal and placed as a separate external device. This extraction isolates the splitting function, improving network reliability by preventing failures in one component from affecting the indexing terminal. The splitter receives optical lines from the terminal via drop ports and distributes them to multiple subscribers, maintaining reliability while managing complexity through functional separation
Data Source
AI summary
A cable arrangement includes first and second optical fiber ribbons both having first ends terminated at a first multi-fiber optical connector. The first ribbon includes a drop fiber routed to a drop interface and indexed fibers having ends indexed at a first row of a second multi-fiber connector. The second ribbon includes fibers having ends terminated at the second multi-fiber connector (e.g., at a second row of the second multi-fiber connector).