Fiber Optic Cable Compartments for Accessible Distribution

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Solution Overview

Problem

Conventional fiber optic cables, such as stranded loose tube designs, pose difficulties in accessing optical fibers at predetermined locations due to complex and time-consuming processes, requiring skilled technicians and often resulting in damage risks and unsuitable cable closure after access.

Innovation Solution

A fiber optic cable design featuring a cable jacket with compartments aligned in a flat array between strength components, allowing easy access to optical fibers through individually opening compartments, facilitating quick and safe access and distribution without disrupting the entire cable structure.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a stranded loose tube cable design is used, then the cable has a round shape which aids in installation and has favorable compression and tensile windows, but accessing optical fibers requires penetrating and removing a substantial length of the cable jacket, cutting strength elements, and performing multiple complex steps that are time-consuming and require highly-skilled technicians

Engineering Contradiction:
Improveease of optical fiber accessVSAvoidcable structure complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The cable is divided into multiple compartments separated by partition walls, with each compartment containing specific optical fibers. This segmentation allows technicians to access only the required compartment by opening a localized access point, rather than penetrating the entire cable jacket. The compartmentalized structure enables selective fiber access while maintaining cable integrity in other sections.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The optical fibers are extracted from the traditional loose tube arrangement and placed into dedicated compartments within the cable jacket. This extraction allows the fibers to be individually accessible through compartment openings without requiring the removal of strength elements or substantial cable jacket sections, thereby simplifying the access process.

Inventive Principle:
Principle #2Taking out (Extraction)

2Ease of operation

If conventional access methods are used on stranded loose tube cables, then optical fibers can be accessed, but the process requires cutting strength elements and removing substantial cable jacket, resulting in a relatively large or stiff portion of the cable that does not fit through pulleys, sheaves, or the like

Engineering Contradiction:
Improveease of optical fiber accessVSAvoidcable flexibility
Core Design Contradiction:
Ease of operationVSLength of moving object

Solution Approach 1:

By segmenting the cable into compartments with individual access points, the invention allows localized opening of only the necessary compartment section. This minimizes the length of cable that needs to be manipulated or replaced after access, thereby maintaining better flexibility compared to conventional methods that require extensive cable jacket removal and strength element cutting.

Inventive Principle:
Principle #1Segmentation

3Productivity

If conventional access methods are used, then optical fibers can be accessed, but the process is time-consuming and must be accomplished by a highly-skilled technician because of the difficulty and/or danger of damaging optical fibers

Engineering Contradiction:
Improveaccess speedVSAvoidoperational simplicity
Core Design Contradiction:
ProductivityVSEase of operation

Solution Approach 1:

The compartmentalized structure with dedicated access points allows technicians to quickly locate and access specific compartments without navigating through complex cable structures. The standardized access points simplify the procedure, reducing the skill level required while maintaining safety and preventing fiber damage.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The cable is pre-configured with compartments and access points during manufacturing, so that the access structure is already in place and does not require complex field preparation. This preliminary arrangement of access features eliminates the need for time-consuming field preparations and reduces the skill level required for technician operations.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS7272282B1Fiber optic cables and assemblies suitable for distribution
Publication Date: 2007.09.18 CORNING OPTICAL COMMUNICATIONS LLC
  • US7272282B1 patent drawing
  • US7272282B1 patent drawing
  • US7272282B1 patent drawing

AI summary

Fiber optic cables and assemblies useful for distribution of the optical fibers to a network are disclosed. The fiber optic cables include a first strength component and a second strength component with a cable jacket generally surrounding the first and second strength components. One or more compartments are defined between the first and second strength components for housing one or more optical fibers. The optical fibers of the fiber optic cable are easily accessible by the craft for distribution to the network, thereby allowing the construction of assemblies that are suitable for distribution of the optical fibers to the network.