Fiber Trough Isolation Fitting for Copper-Optical Cable Separation
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Solution Overview
Problem
Optical fibers are susceptible to damage from external loads, particularly when copper cables are positioned on top of them in troughs, causing undesirable bending due to the weight of thick or large numbers of copper wires.
Innovation Solution
A pathway isolation fitting is designed to be mounted to the sidewall of a fiber trough system, isolating the routing paths of copper cables from optical fibers, minimizing damaging loads by creating a gap between the fitting and the trough's bottom surface, allowing optical cables to pass underneath while supporting bulk cables, and featuring adjustable positioning and coupling mechanisms for secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If copper cables are positioned on top of optical fibers in the trough, then cable management is simplified, but the weight of copper cables causes undesirable bending and damage to optical fibers
Solution Approach 1:
The trough is divided into two separate pathways by the isolation fitting: an upper pathway for copper cables and a lower pathway for optical fibers. This segmentation prevents the weight of copper cables from being transmitted to optical fibers while maintaining organized cable management in the trough system.
Solution Approach 2:
The pathway isolation fitting acts as an intermediary structure mounted to the trough sidewall. It creates a physical barrier that separates copper cable routing from optical fiber routing, preventing harmful mechanical loads from reaching the optical fibers while allowing both cable types to be managed within the same trough.
2Reliability
If pathway isolation fittings are installed at multiple intervals along the trough, then optical fibers are better protected from cable loads, but the device complexity and number of components increase
Solution Approach 1:
Rather than installing fittings continuously along the entire trough, the solution uses selective placement at key intervals where copper cable bundles are introduced or where optical fiber pathways are most vulnerable. This partial action provides sufficient protection while minimizing the total number of fittings required.
Data Source
AI summary
A fitting for a fiber trough. The fitting includes a bottom cable support surface and a pair of opposite side walls extending from the bottom cable support surface that define a channel. The fitting is mounted to a fiber trough so that the channel is positioned within another channel defined by the fiber trough, isolating a cable routing path defined by the fitting channel from a cable routing path defined by the trough channel.