Optical Cable Segment with Branched Fibers for Star Topology

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Solution Overview

Problem

Existing communication infrastructure using optical fibers faces challenges in easy installation and signal attenuation, particularly in star topologies, which require running new fiber optic cables and are technically difficult to implement, especially when adding new secondary equipment.

Innovation Solution

A cable segment design featuring multiple groups of optical fibers with continuous and branched fibers, equipped with connectors that allow for easy connection and branching points, enabling a modular and easy-to-install infrastructure that mimics bus topology while maintaining the signal quality of star topology.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If a star topology is used with optical fibers, then high-speed signal transmission is achieved, but installation becomes complex and requires specialists

Engineering Contradiction:
Improvesignal transmission speedVSAvoidinstallation ease
Core Design Contradiction:
SpeedVSEase of operation

Solution Approach 1:

The optical cable is divided into multiple groups of fibers (continuous fibers and branched fibers), with connectors positioned at strategic locations to create modular segments. This segmentation allows simplified installation while maintaining high-speed transmission capabilities through the optical fiber structure.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Branching points are pre-configured within the cable structure during manufacturing, with connectors already in place. This preliminary action eliminates the need for complex field installations and specialist intervention, allowing end-users to simply connect segments together while maintaining star topology performance.

Inventive Principle:
Principle #10Preliminary action

2Ease of operation

If bus topology is used to simplify installation, then ease of installation is improved, but signal attenuation increases

Engineering Contradiction:
Improveinstallation easeVSAvoidsignal attenuation
Core Design Contradiction:
Ease of operationVSLoss of energy

Solution Approach 1:

The cable structure provides different fiber types in different locations: continuous fibers for main trunk connections and branched fibers for tapping points. This local quality differentiation allows the system to maintain signal quality at branching points while keeping the overall installation simple like bus topology.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

Connectors act as intermediaries at branching points, enabling clean signal connections without the attenuation problems of traditional bus topology taps. The pre-configured connector structure mediates between the simple bus-like installation and the signal quality requirements.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Adaptability or versatility

If branching is performed on optical fiber cables, then secondary equipment can be added, but technical difficulty increases

Engineering Contradiction:
Improveequipment addabilityVSAvoidbranching complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

Branching points with connectors are pre-configured within the cable structure during manufacturing. This preliminary action transforms complex field branching operations into simple connector plug-and-play operations, enabling easy addition of secondary equipment without technical difficulty.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The cable structure provides self-contained branching capabilities with integrated connectors, allowing the cable to serve its own branching needs without external specialist intervention. Users can simply connect segments together to add equipment.

Inventive Principle:
Principle #25Self-service

Data Source

PatentEP1838016B1Optical cable segment with tapping connections for a communications infrastructure
Publication Date: 2008.07.16 SCHNEIDER ELECTRIC IND SAS
  • EP1838016B1 patent drawingFigure 1~2
  • EP1838016B1 patent drawingFigure 3~5
  • EP1838016B1 patent drawingFigure 6

AI summary

The present invention relates to a cable segment (2) in a communication infrastructure, comprising: - several groups (21) of optical fibers, - a first connector (22a) located at one end of the segment (2), having connection zones (3a, 3b, 3c, 3d), - a second connector (22b) located at the other end of the segment (2) having connection zones complementary (30a, 30b, 30c, 30d) to those of the first connector (22a). The groups of optical fibers (21) comprise: - one or more groups (21b, 21c, 21d) of continuous optical fibers along the segment, - a group (21a) of branched optical fibers, each optical fiber (210) of this group being interrupted once so as to form a branch point (23) of the segment.