Optical Fiber Cable Groove Array for Ink Protection
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Solution Overview
Problem
Optical communication cables face challenges in protecting surface-applied ink layers from damage and wear during installation and use, as they are susceptible to abrasion and contact with various surfaces.
Innovation Solution
The implementation of a groove array on the outer surface of the cable body, with ink layers positioned within the grooves, creates a protective profile that limits contact with surfaces and provides tactile identification, using a combination of embossing and inkjet deposition techniques to form alphanumeric characters that span multiple grooves and are angled for enhanced protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If surface-applied ink layers are used on optical cables for identification, then information communication and cable identification are improved, but the ink layers become susceptible to abrasion and damage during installation and use
Solution Approach 1:
The cable surface is segmented into grooves and peaks, with ink layers positioned within the grooves. This segmentation creates distinct zones where the ink is protected by the peaks on either side, preventing abrasion while maintaining legibility for cable identification
Solution Approach 2:
The groove structure acts as an intermediary between the ink layer and the external environment. By recessing the ink within the groove and protecting it with peaks on either side, the structure mediates protection against abrasion during installation and use, while still allowing the ink to serve its identification function
2Reliability
If ink layers are recessed within grooves for protection, then abrasion resistance is improved, but the visibility and ease of viewing the ink may be reduced
Solution Approach 1:
The groove and peak structure creates local variations in surface topology. The ink is positioned in the groove where it is protected, but the peaks are designed to allow light reflection and viewing angles that maintain legibility. This local quality differentiation protects the ink while preserving its identification function
Solution Approach 2:
The solution moves the ink from a flat surface to a three-dimensional groove structure. This dimensional change allows the ink to be recessed for protection while the peaks and groove geometry enable light reflection and viewing from multiple angles, maintaining ease of identification
3Loss of information
If alphanumeric characters are formed with width greater than groove spacing, then character legibility is improved, but the ink layer coverage and material usage increase
Solution Approach 1:
The groove structure creates localized zones for ink deposition. By forming characters with width greater than groove spacing, the ink spans multiple grooves, ensuring legibility while the groove structure optimizes material distribution and adhesion, balancing material usage with character visibility
Data Source
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AI summary
An optical cable is provided. The optical cable includes a cable body having an outer surface and an inner surface defining a lumen and one or more optical transmission elements located within the lumen. The optical cable includes a groove array comprising a plurality of grooves located on the outer surface of the cable body. Each groove defines a trough having a lower surface located between peaks on either side of the trough, and the groove array includes an average groove spacing. The optical cable includes an ink layer applied to the cable body at the location of the groove array. The groove array and the ink layer are formed to limit abrasion experienced by the ink layer.