Stranded Optical Cable with Flexible Aramid Tension and Pre-Attached Connectors
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Solution Overview
Problem
The complexity and rigidity of traditional stranded optical cables make them unsuitable for internal connections in data centers, particularly in small spaces, where flexibility and maintenance are challenging due to the use of steel wires and lack of incombustibility.
Innovation Solution
A stranded optical cable with pre-attached multicore optical connectors at both ends, featuring a flexible design without directionality for bending, and an incombustible sheath, allowing for easy installation and management within small spaces by eliminating the need for rigid tension members and using a tension fiber as a substitute for steel wires.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If steel wires are used as tension members in stranded optical cables, then the rigidity of the cable is increased, but the working condition in small spaces becomes poor and the cable is not suited for optical wiring within buildings
Solution Approach 1:
The patent changes the material parameter of the tension member from steel wire to non-metallic material (such as aramid fiber or polyethylene terephthalate fiber), transforming the cable from rigid to flexible while maintaining sufficient tensile strength for optical cable applications
Solution Approach 2:
The patent employs flexible non-metallic tension members that allow the cable to bend and adapt to complex routing paths within buildings, replacing the rigid steel wire structure with materials that provide flexibility while maintaining structural integrity
2Quantity of substance
If a large number of optical fibers are used for high-speed transmissions, then the transmission capacity is improved, but the optical connection becomes complicated and maintenance becomes problematic
Solution Approach 1:
The patent divides the large number of optical fibers into multiple bundled groups, with each bundle having its own protective sheath and identification markings, making the cable manageable and connectable in sections rather than as a single complex unit
Solution Approach 2:
The patent applies pre-connectorization to optical cable ends and provides pre-marking of fiber bundles during manufacturing, so that connection work is simplified and maintenance can be performed more easily without requiring complex identification and handling procedures
3Quantity of substance
If traditional stranded optical cable structure is used, then the cable can accommodate large number of optical fibers, but the cable lacks incombustibility and is not suitable for building interior wiring
Solution Approach 1:
The patent uses composite material structures for the cable sheath and tension members, incorporating flame-retardant and incombustible materials (such as halogen-free polymer compounds and mineral-filled compounds) that provide both protective functionality and fire safety requirements for building interior installations
Data Source
AI summary
The stranded optical cable 10 includes a plurality of stranded multicore optical cables 12 and a cable sheath 16 covering the multicore optical cables 12, each multicore optical cable 12 including at least two of optical units 13 as a pair and a unit sheath 14 covering the optical units 13, each optical unit 13 being formed by bundling a plurality of optical fibers. And, parts of the cable sheath corresponding to both ends of the stranded optical cable 10 are removed to expose the multicore optical cables 12 certain lengths so that the optical connectors 21 are connected to the multicore optical cables 12, respectively.