Optical Fiber Ribbon Selective Superabsorbent Coating
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Solution Overview
Problem
High-density optical fiber ribbons face challenges in maintaining water resistance without increasing cable diameter or causing micro bending losses due to pressure from water swellable materials.
Innovation Solution
The use of a superabsorbent material selectively coated on optical fiber ribbons, particularly on bonded and unbonded regions, to absorb water while minimizing stress on the fibers, thereby reducing micro bending losses and maintaining water blocking capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If water swellable materials (yarns, tapes) are used to provide water resistance in high-density fiber cables, then water blocking capability is improved, but cable diameter increases and manufacturing complexity increases
Solution Approach 1:
The invention extracts the water-blocking function from separate mechanical components (yarns, tapes) and integrates it directly into the fiber ribbon structure through selective coating. This eliminates the need for additional water-blocking elements, thereby reducing cable diameter while maintaining water resistance.
Solution Approach 2:
The patent merges the water-blocking function with the fiber ribbon structure itself by applying superabsorbent coating directly to selected fibers. This consolidation eliminates separate water-blocking components and reduces overall cable complexity and diameter.
2Reliability
If water swellable coating is applied on IBRs to prevent water ingression, then water blocking capability is improved, but micro bending losses increase due to pressure on fibers
Solution Approach 1:
The invention applies water-resistant superabsorbent coating selectively to specific fibers (e.g., edge fibers or每隔 certain intervals) rather than coating all fibers uniformly. This localized approach provides water blocking where most needed while minimizing pressure-induced microbending losses on other fibers.
Solution Approach 2:
The patent uses partial coating coverage instead of full coating. By coating only selected fibers with superabsorbent material, sufficient water blocking is achieved without the excessive pressure that would result from coating all fibers, thereby reducing microbending losses.
3Reliability
If higher amount of water swellable materials are used to safeguard fibers against water penetration, then water blocking capability is improved, but manufacturing complexity and costs increase
Solution Approach 1:
The invention extracts water-blocking functionality from separate mechanical components (yarns, tapes requiring complex installation) and integrates it directly into the fiber ribbon manufacturing process through coating, thereby simplifying overall manufacturing.
Solution Approach 2:
The patent combines water-blocking material application with the fiber ribbon structure itself, eliminating the need for separate water-blocking component installation steps and reducing manufacturing complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides effective water blocking with reduced micro bending losses and a compact cable diameter, lowering manufacturing complexity and costs while maintaining high fiber density.
Implementation Method 1
at least a region of the optical fiber ribbon is selectively coated with at least a superabsorbent material
Data Source
AI summary
The present disclosure provides an optical fiber ribbon (10) comprising a plurality of optical fibers (11) with coating of superabsorbent material (C). The coating (C) is applied selectively on bonded regions (13) or unbonded regions (14) of the ribbon (10). The ribbon (10) provides for reduced diameter, higher packing density, and reduced micro-bending losses. Optical fiber cable (20) comprising optical fiber ribbon (10) is also provided in the present disclosure.