Optical Fiber Ribbon Resin Coupling Elongation
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Solution Overview
Problem
Optical fiber ribbons face a trade-off between flexibility and joint strength due to the intermittent arrangement of coupling members, where low occupancy of coupling members improves flexibility but lowers joint strength, and high occupancy increases joint strength at the cost of flexibility.
Innovation Solution
An optical fiber ribbon design featuring first and second optical fibers coupled by a resin material with a breaking elongation of 200% to 500% and a tear strength of at least 0.25 N, allowing for improved handling and joint strength compatibility, along with a Young's modulus of the resin material of less than 50 MPa to restrict loss variations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the occupancy of coupling members between optical fibers is reduced to improve flexibility, then the flexibility of the optical fiber ribbon is improved, but the joint strength between the optical fibers is lowered
Solution Approach 1:
The patent changes the material parameters of the coupling member, specifically selecting a resin material with breaking elongation of 200-500% and Young's modulus of 1-50 MPa. This parameter optimization allows the coupling member to provide sufficient joint strength while maintaining flexibility, resolving the contradiction between these two properties.
Solution Approach 2:
The patent uses composite resin materials with specific combinations of breaking elongation and Young's modulus to create a coupling member that simultaneously achieves both strength and flexibility. The resin material is selected to have both breaking elongation of 200-500% and Young's modulus of 1-50 MPa, creating a composite property that satisfies both requirements.
2Strength
If the occupancy of coupling members is increased to improve joint strength, then the joint strength between optical fibers is increased, but the flexibility of the optical fiber ribbon is lowered
Solution Approach 1:
The patent optimizes the material parameters of the coupling member by selecting resin with breaking elongation of 200-500% and Young's modulus of 1-50 MPa. This parameter selection enables the coupling member to maintain joint strength even at lower occupancy, thereby preserving flexibility without sacrificing strength.
Solution Approach 2:
The patent applies local quality by using resin material with specific localized properties (breaking elongation of 200-500% and Young's modulus of 1-50 MPa) at the coupling member locations. This localized optimization allows the coupling member to provide sufficient strength where needed while maintaining overall flexibility of the ribbon.
3Ease of operation
If a resin material with high breaking elongation is used to improve flexibility, then the flexibility is improved, but the tear strength may be insufficient
Solution Approach 1:
The patent simultaneously optimizes both breaking elongation (200-500%) and tear strength (≥0.25 N) by selecting resin materials that satisfy both parameters. This dual parameter optimization ensures that the coupling member provides both flexibility and reliable tear resistance, resolving the contradiction between these properties.
Solution Approach 2:
The patent uses composite resin materials that combine high breaking elongation (200-500%) with sufficient tear strength (≥0.25 N). This composite material selection allows the coupling member to achieve both flexibility and reliability simultaneously, overcoming the trade-off between these two properties.
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 design enhances the optical fiber ribbon's handling ability and joint strength while preventing breakage or peel-off of the coupling member, allowing for easy separation of individual fibers and reducing damage during cable bending.
Implementation Method 1
a coupling member made of a resin material coupling the first and second optical fibers by adhering the first and second optical fibers each other intermittently in a longitudinal direction
Data Source
AI summary
An optical fiber ribbon is disclosed. The optical fiber ribbon includes first and second optical fibers arranged in parallel, and at least one coupling member made of a resin material. The coupling member couples the first and second optical fibers by adhering the first and second optical fibers each other intermittently in a longitudinal direction of the first and second optical fibers. A breaking elongation of the resin material constituting the coupling member is equal to or more than 200% and equal to or less than 500%.