Pre-connectorized Optical Termination Assembly for FTTH

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Solution Overview

Problem

The installation of existing optical termination boxes in FTTH networks is cumbersome and time-consuming for end users, requiring multiple steps and handling of delicate optical fibers and connectors, which increases the risk of damage and inconvenience.

Innovation Solution

An optical termination assembly with a pre-connectorized drop cable and an optical termination box that can be mounted without opening the compartment, featuring external fixing elements for secure attachment to a support structure, minimizing the need for in-apartment handling of optical fibers and connectors.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of time

If the optical termination box is installed using conventional methods requiring opening the compartment and handling optical fibers and connectors, then the installation can be completed, but the installation time is long and the risk of damage to optical components is high

Engineering Contradiction:
Improveinstallation timeVSAvoidease of installation
Core Design Contradiction:
Loss of timeVSEase of operation

Solution Approach 1:

The optical fibers are pre-connectorized to optical connectors within the optical termination box before delivery to the end user. The compartment is pre-assembled with all necessary components (optical fibers, connectors, splices) arranged and secured. This preliminary preparation eliminates the need for operators to handle delicate optical components during installation, reducing both installation time and the risk of damage.

Inventive Principle:
Principle #10Preliminary action

2Reliability

If the optical termination box is sealed to protect optical components, then the protection of optical fibers and connectors is improved, but the ease of installation and maintenance is reduced

Engineering Contradiction:
Improveprotection of optical componentsVSAvoidease of installation
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The optical termination box is designed with a removable compartment or access mechanism that allows operators to access the optical components for initial installation and configuration, after which the compartment can be sealed to protect the components. This extraction approach provides protection during normal operation while maintaining ease of installation and maintenance when needed.

Inventive Principle:
Principle #2Taking out (Extraction)

3Strength

If multiple fixing operations are performed within the apartment, then the optical termination box can be securely installed, but the installation complexity and time increase

Engineering Contradiction:
Improvesecure installationVSAvoidinstallation complexity
Core Design Contradiction:
StrengthVSDevice complexity

Solution Approach 1:

The optical termination box is designed with integrated mounting features that combine multiple functions (securing the box to the wall, organizing cables, and protecting components) into a single unified structure. The box can be mounted as one complete unit rather than requiring separate operations for mounting and component installation, reducing installation complexity while maintaining secure installation.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentEP2517061B1Optical termination assembly
Publication Date: 2016.03.23 PRYSMIAN SPA
  • EP2517061B1 patent drawingFigure 1
  • EP2517061B1 patent drawingFigure 2
  • EP2517061B1 patent drawingFigure 3

AI summary

It is disclosed an optical termination assembly (1) comprising an optical termination box (2) and a drop cable (3). The drop cable (3) has a first end housed in a first compartment of the optical termination box (2). The first end of the drop cable is pre-connectohzed. The optical termination box (2) comprises at least one first fixing element (44e) accessible from the outside suitable for fixing the optical termination box (2) to a support structure.