Intermittent Optical Fiber Ribbon V-Groove Alignment
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Solution Overview
Problem
Existing intermittently-coupled type optical fiber ribbons with optical fibers of 0.22 mm or less diameter face issues with fusion machine compatibility due to mismatched V groove pitch, leading to deviated fiber placement and reduced cable or cord density.
Innovation Solution
The optical fiber ribbon is designed with a center distance of 0.28 ± 0.03 mm between adjacent fibers and an outer diameter of 0.22 mm or less, allowing for proper alignment with a 0.25 mm V groove pitch, enabling efficient fusion and increased density by using dual-core configurations and specific coating layer properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If optical fibers with outer diameter of 0.22 mm or less are used to reduce cable/cord size, then the sectional area is reduced and density is increased, but the V groove pitch mismatch causes deviated fiber placement and fusion incompatibility
Solution Approach 1:
The patent changes the center distance parameter of optical fibers from the conventional 0.25 mm to 0.28 ± 0.03 mm. This parameter modification allows smaller diameter fibers (0.22 mm or less) to be positioned at correct intervals for standard V groove fusion machines, resolving the mismatch between fiber size reduction and fusion compatibility
Solution Approach 2:
The patent applies different center distances in different regions: 0.28 ± 0.03 mm between adjacent ribbon pairs and 0.20 ± 0.03 mm between fibers within the same ribbon pair. This local differentiation enables both fusion compatibility and compact fiber arrangement
2Quantity of substance
If optical fibers with outer diameter of 0.22 mm or less are used, then cable/cord density is increased, but compatibility with standard fusion machines is reduced
Solution Approach 1:
By modifying the center distance parameter to 0.28 ± 0.03 mm, the patent enables smaller fibers to work with standard fusion machines that have fixed V groove pitches, thus maintaining adaptability while increasing density
3Quantity of substance
If center distance between adjacent optical fibers is reduced to increase density, then cable/c cord sectional area is reduced, but alignment with V groove fusion machines becomes difficult
Solution Approach 1:
The patent sets the center distance between adjacent ribbon pairs to 0.28 ± 0.03 mm, which matches the pitch of standard V groove fusion machines. This parameter change enables both high density (through small fiber diameter) and ease of manufacture (through proper alignment)
Solution Approach 2:
The patent divides the optical fiber arrangement into ribbon pairs with different center distances: 0.28 ± 0.03 mm between pairs for machine compatibility, and 0.20 ± 0.03 mm within pairs for compactness. This segmentation allows simultaneous optimization of both density and manufacturability
Data Source
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AI summary
An intermittently-coupled type optical fiber ribbon in which a plurality of ribbon type paired optical fibers each of which is integrally formed by bringing two optical fibers into contact with each other are arranged in parallel, and a coupling part in which adjacent ribbon type paired optical fibers are connected to each other and a non-coupling part in which ribbon type paired optical fibers are not connected are intermittently provided in a longitudinal direction, wherein an outer diameter dimension of the optical fiber is 0.22 mm or less, and a center distance of optical fibers adjacent with the coupling part interposed therebetween between the adjacent ribbon type paired optical fibers is 0.28 ± 0.03 mm.