Multi-Core Fiber Alignment Control for Marker-to-Key Positioning

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Solution Overview

Problem

Existing techniques lack the capability to appropriately align multi-core fibers, particularly in ensuring that markers on one fiber are correctly positioned relative to markers on another fiber or to connector keys, which is crucial for effective connection and communication.

Innovation Solution

A control device comprising a measurement control section to identify the position of markers in multi-core fibers and an alignment control section to manage an alignment mechanism, ensuring that the marker positions satisfy predetermined conditions during fiber alignment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If conventional alignment techniques are used for multi-core fibers, then the alignment process is simple, but the marker positioning accuracy is insufficient

Engineering Contradiction:
Improvemarker positioning accuracyVSAvoidalignment control complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The measurement control section identifies and records the positions of markers in multi-core fibers before the alignment process. This preliminary measurement enables the alignment control section to calculate required adjustment amounts and control the alignment mechanism to position markers accurately relative to each other or to connector keys, thereby resolving the contradiction between measurement precision and device complexity.

Inventive Principle:
Principle #10Preliminary action

2Reliability

If marker positioning is not controlled, then the alignment process is faster, but the connection reliability is reduced

Engineering Contradiction:
Improveconnection reliabilityVSAvoidalignment time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The measurement control section measures the actual positions of markers in the multi-core fibers. The alignment control section uses this feedback information to calculate adjustment amounts and control the alignment mechanism to position markers accurately. This closed-loop feedback control ensures connection reliability while minimizing alignment time by avoiding trial-and-error adjustments.

Inventive Principle:
Principle #23Feedback

3Manufacturing precision

If automated alignment control is implemented, then the alignment precision is improved, but the device complexity increases

Engineering Contradiction:
Improvealignment precisionVSAvoidcontrol system complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The control device integrates multiple functions into a unified system: the measurement control section identifies marker positions, the alignment control section calculates adjustment amounts based on these measurements, and the alignment mechanism executes the positioning. This multi-functional integration achieves high alignment precision while managing device complexity through coordinated operation of interconnected components.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentEP4538761A1Control device, fusion connection device, connector connection device, and control program
Publication Date: 2025.04.16 FUJIKURA LTD
  • EP4538761A1 patent drawingFigure 1~2
  • EP4538761A1 patent drawingFigure 3(a)~3(e)
  • EP4538761A1 patent drawingFigure 4(a)~5(c)

AI summary

This invention appropriately carries out alignment of a multi-core fiber. A control device (10) includes a processor (10a). The processor (10a) executes: an identifying process of identifying positions of cores and a marker in a multi-core fiber; and an alignment process of controlling an alignment mechanism so as to carry out alignment of the multi-core fiber so that the positions of the cores and the marker in an end surface of the multi-core fiber satisfy a predetermined condition.