Optical Fiber Cable Asymmetric Profile 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 these layers are susceptible to abrasion and are not effectively shielded by the cable's surface features.
Innovation Solution
The introduction of an asymmetric profile feature on the outer surface of the cable body with recessed troughs and peaks, where the ink layer is positioned below the outer surface, acts as a buffer to limit contact with surfaces and protect the ink layer from abrasion, while also providing tactile identification for easier installation and maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the ink layer is applied on the outer surface of the cable body, then the printed information is easily visible and accessible, but the ink layer is susceptible to abrasion and damage during installation and use
Solution Approach 1:
The ink layer is nested within a groove structure on the cable surface. The groove recesses the ink layer below the outermost surface of the cable body, creating a protective cavity that shields the printed information from direct contact with abrasive surfaces during installation and use, while still allowing the information to be visible and accessible.
Solution Approach 2:
The groove structure acts as a pre-established protective barrier that cushions the ink layer before any abrasion or damage can occur. By recessing the ink layer into the groove during cable manufacturing, the design provides beforehand protection against the harmful effects of installation and usage environments.
2Ease of manufacture
If the outer surface of the cable is made smooth and flat, then the cable is easier to manufacture and has uniform surface properties, but the printed ink layer lacks protection from abrasion
Solution Approach 1:
Instead of making the entire cable surface complex, the invention applies a localized groove structure only at specific positions where ink layers are printed. This local modification provides abrasion protection precisely where needed on the cable surface, while the rest of the cable maintains its simple, smooth manufacturing characteristics.
3Reliability
If the ink layer is positioned below the outer surface in a recessed groove, then the ink layer is protected from abrasion, but the cable surface profile becomes asymmetric and more complex
Solution Approach 1:
The cable surface is segmented into different functional zones: smooth areas for general cable functions and localized groove structures for ink layer protection. This segmentation allows the cable to maintain overall simplicity while providing targeted protection where required by the printed information locations.
Data Source
AI summary
An optical cable includes a cable body having an outer surface and an inner surface defining a lumen. The cable body has a profile feature formed on the outer surface, wherein the profile feature includes a trough that extends longitudinally between a first buttress and a second buttress, the first buttress and the second buttress having a radial height. The trough defines a continuous concave surface between the first buttress and the second buttress that is recessed below the radial height. An ink layer is adhered to the concave surface, wherein the ink layer forms alphanumeric characters that provide information related to the optical cable.