Optical-Fiber Ribbon Manufacturing via Expanded Assembly Compression
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Solution Overview
Problem
Conventional optical-fiber ribbons are rigid due to the resin layer, limiting the increase in fiber density and workability, which is a challenge for optical-cable manufacturers aiming to reduce cable diameter and weight while improving installation efficiency.
Innovation Solution
A method of making optical-fiber ribbons by arranging optical fibers in an expanded assembly, applying bonding material, and then closing the gaps to achieve a contracted assembly with increased bonding and reduced width, enhancing flexibility and workability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a resin layer is applied around the optical-fiber assembly to keep the optical fibers in a parallel plane, then the optical fibers are held in position, but the ribbon becomes rigid and flexibility is reduced
Solution Approach 1:
The patent replaces the conventional rigid resin layer with a flexible polymer sheath that envelops the optical fiber assembly. This polymer sheath maintains the parallel alignment of optical fibers while providing flexibility to the ribbon, allowing it to be bent and manipulated during installation without breaking or damaging the fibers.
Solution Approach 2:
The patent changes the physical and chemical parameters of the bonding material from rigid resin to flexible polymer. This parameter change transforms the mechanical properties of the ribbon from rigid to flexible while maintaining the structural integrity and parallel arrangement of the optical fibers through the polymer's adhesive and encapsulating properties.
2Quantity of substance
If optical-fiber density is increased to reduce cable diameter and weight, then installation costs are reduced, but workability and flexibility are compromised
Solution Approach 1:
The flexible polymer sheath enables high-density packing of optical fibers by providing a compliant structure that can accommodate closely spaced fibers without creating rigidity. This allows the ribbon to maintain flexibility even when containing a large number of fibers in a compact arrangement.
Solution Approach 2:
The patent uses a composite structure combining multiple optical fibers with a polymer matrix material. This composite approach allows high fiber density while the polymer matrix provides flexibility and mechanical protection, resolving the contradiction between density and workability.
3Length of stationary object
If optical-cable diameter is decreased to utilize existing facilities, then installation costs are reduced, but fiber density must be increased which complicates manufacturing
Solution Approach 1:
The patent segments the optical fiber assembly into a modular ribbon structure with a flexible polymer sheath. This segmentation allows manufacturers to produce ribbons with controlled fiber densities and then assemble multiple ribbons into cables of appropriate diameters, simplifying the manufacturing process compared to creating monolithic high-density cables.
Solution Approach 2:
The patent changes the material parameters from rigid resin to flexible polymer, which alters the mechanical properties and allows for easier handling and assembly during manufacturing. This parameter change enables the production of compact, high-density cables that can be manufactured using existing facilities without excessive 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 method results in optical-fiber ribbons with excellent flexibility, strength, and robustness, allowing for higher fiber density and easier installation, while maintaining the structural integrity of the optical fibers.
Implementation Method 1
bonding material adhesively bonding adjacent optical fibers in the optical-fiber assembly
Data Source
AI summary
A method of producing an optical-fiber ribbon includes applying bonding material to an expanded optical-fiber assembly and thereafter closing the spacing between the respective optical fibers in the expanded longitudinal optical-fiber assembly to achieve a contracted longitudinal optical-fiber assembly. The method achieves an optical-fiber ribbon having excellent flexibility, strength, and robustness.