Automated Fiber Array Fabrication System with Laser Welding

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Solution Overview

Problem

Existing methods for aligning and welding optical fibers in optical systems are often manual, leading to increased costs and reduced efficiency.

Innovation Solution

An automated system for fabricating fiber arrays, which includes stages for fiber selection, preparation, alignment, welding, and marking, allowing for efficient integration of optical fiber preparation, inspection, and attachment processes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If manual methods are used for aligning and welding optical fibers, then flexibility and control are maintained, but costs increase and efficiency decreases

Engineering Contradiction:
ImproveefficiencyVSAvoidautomation system complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The automated fiber preparation and welding system is divided into distinct functional modules: a fiber preparation module that performs cleaving and positioning, an alignment module with imaging sensors, a welding module with laser sources, and a control module. Each module handles a specific task in the fiber array fabrication process, allowing for optimized performance of individual functions while maintaining overall system automation.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The automated system integrates multiple functions into a single platform: fiber preparation (cleving, positioning), inspection (imaging, alignment verification), and welding (laser fusion). This multi-functional integration eliminates the need for separate manual operations for each task, thereby increasing productivity while managing complexity through consolidated hardware and software control.

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

2Productivity

If automated systems are implemented for fiber preparation and welding, then efficiency increases and costs reduce, but system complexity increases

Engineering Contradiction:
Improvefabrication efficiencyVSAvoidautomation system complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The system incorporates imaging sensors that capture images of the fiber array during preparation and alignment stages. These images are processed by the control module to verify fiber positioning, cleave angles, and alignment accuracy before welding. This feedback mechanism ensures quality control and enables real-time adjustments, maintaining high fabrication efficiency while reducing the need for complex manual intervention.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The automated system performs fiber preparation, alignment, and welding without continuous human intervention. The control module autonomously coordinates the preparation module, alignment module, and welding module based on pre-programmed parameters and real-time sensor feedback, enabling self-service operation that maximizes productivity while managing system complexity through automated decision-making algorithms.

Inventive Principle:
Principle #25Self-service

3Manufacturing precision

If manual alignment processes are used, then setup complexity is lower, but manufacturing precision and performance deteriorate

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

Solution Approach 1:

The system replaces manual mechanical alignment operations with automated imaging-based alignment. Imaging sensors capture fiber positions and orientations, and the control module calculates precise alignment parameters. This substitution of mechanical manual adjustment with optical sensing and computational control achieves superior alignment precision while managing complexity through software-based solutions rather than complex mechanical adjustment mechanisms.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

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 automated system enables the production of laser welded fiber arrays with increased efficiency and reduced costs, improving the alignment and performance of optical fibers in optical systems.

Implementation Method 1

attachment of the optical fiber to the substrate may include marking of the optical fiber, and laser welding of the optical fiber to the substrate

Methodology Applied
Scientific EffectLaser welding: Laser Beam Welding

Data Source

PatentUS20250060533A1Automated fiber preparation and welding methods and system
Publication Date: 2025.02.20 RAM PHOTONICS INTERCONNECTS LLC
  • US20250060533A1 patent drawing
  • US20250060533A1 patent drawing
  • US20250060533A1 patent drawing

AI summary

A method for constructing a fiber array includes a) selecting a fiber spool among one or more fiber spools; b) processing a portion of the fiber spool to form an optical fiber having an output end; c) positioning a substrate at a position of a plurality of positions; and d) aligning the output end of the optical fiber to the substrate. The method also includes e) coupling the output end of the optical fiber to a location of a plurality of locations on the substrate; f) detaching the optical fiber from the fiber spool to form an input end of the optical fiber; and g) marking the optical fiber. The method further includes repeating c) through g) for each of the plurality of locations on the substrate determining that the substrate has been positioned at each of the plurality of positions.