Preconnectorized Fiber Optic Cable Protection System
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Solution Overview
Problem
Fiber optic cables are vulnerable during installation due to signal loss at connectors, which are typically installed on-site by specialized personnel, leading to high costs and potential damage from dust and physical stress during pulling processes.
Innovation Solution
A protection system for preconnectorized fiber optic cables featuring a fastening element, tubular protection element, and closing element with a multilayer structure, including a heat-shrinkable outer sheath, to safeguard connectors during installation, allowing for reliable connection to telecommunications systems without specialized labor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If connectors are installed on fiber optic cables before cable installation, then field installation time and cost are reduced, but connectors become vulnerable to damage and signal loss during the cable pulling process
Solution Approach 1:
The cable structure is segmented into distinct protective zones: an outer sheath covering the cable body, an inner sheath exposing only the necessary cable portion for fastening, and a tubular protection element specifically housing the pre-installed connectors. This segmentation allows connectors to be protected during installation while enabling field access when needed.
Solution Approach 2:
The tubular protection element acts as a pre-installed protective cushion for the connectors, shielding them from mechanical damage, dust, and uncoupling forces during the cable pulling and installation process. This beforehand protection eliminates the vulnerability of preconnectorized cables while maintaining installation efficiency.
2Reliability
If connectors are installed in the field by specialized personnel, then connector reliability is maintained, but installation cost and complexity increase
Solution Approach 1:
Connectors are pre-installed on the fiber optic cables at the factory under controlled conditions, eliminating the need for field splicing operations. The only field operation required is removing the protective covers and connecting the exposed connectors, which can be performed by non-specialized personnel without specialized equipment.
Solution Approach 2:
The complex splicing operation is extracted from the field installation process and performed beforehand at the factory. The field installation is reduced to simple connector connection tasks, eliminating the need for specialized splicing equipment and highly-skilled labor while maintaining connection quality.
3Productivity
If cable pulling force is applied directly to the cable, then installation efficiency is improved, but the cable and connectors may suffer damage or breaking
Solution Approach 1:
The inner sheath acts as an intermediary protective layer between the cable pulling force and the connectors. During cable installation, pulling force is applied to the outer cable structure while the inner sheath and tubular protection element isolate the connectors from these forces, preventing damage while enabling efficient cable deployment.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system ensures reliable and efficient installation of preconnectorized fiber optic cables by protecting connectors from damage and environmental factors, reducing installation costs and the need for specialized personnel.
Implementation Method 1
a heat-shrinkable outer sheath
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
The present invention relates to a system and a method for the protection of a preconnectorized fiber optic cable (10), comprising: a fastening element (1) that can be coupled to a part of the cable in which all the layers have been removed except the inner sheath; a tubular protection element (3) that can be coupled at one end to the fastening element (1), wherein the tubular element (3) is configured to house the final part of the cable that comprises the connections of the optical fibers with the optical connectors, wherein this final part is also devoid of the inner sheath; and a closing element (2) that can be coupled to the other end of the tubular protection element (3).