Fusion Splicer Arc Calibration via Corner Melt-Back Slope
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Solution Overview
Problem
Current fusion splicing methods face challenges in calibrating arc power for varying fiber diameters and atmospheric conditions, leading to inconsistencies in heat generation and splice quality, particularly when dealing with fibers of different cladding diameters and types.
Innovation Solution
A method that measures and adjusts the arc heat by determining the slope of fiber end melt-back at the corners, allowing for precise calibration of the arc power or current to achieve consistent fiber fusion temperatures across different electrode gaps and fiber diameters, using automated image processing for accurate measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional melt-back calibration method is used, then calibration can be performed, but large amounts of SiO2 are deposited on electrode tips changing arc discharge condition
Solution Approach 1:
The patent extracts the measurement function from the center axis to the corner of the fiber, measuring melt-back distance at the corner instead of the center. This extraction allows calibration to be performed with minimal arc power, preventing SiO2 deposition on electrodes while maintaining calibration accuracy through automated image processing analysis of the corner melt-back distance
Solution Approach 2:
The patent replaces the manual measurement system with an automated image processing system that captures and analyzes fiber images to automatically determine melt-back distance at the corner. This substitution eliminates the need for high-power arcs required in traditional methods, thereby preventing electrode contamination
2Manufacturing precision
If arc power is increased to melt long portions of fiber for calibration, then melt-back distance can be measured, but large amounts of SiO2 are deposited on electrode tips
Solution Approach 1:
The patent applies local quality by measuring melt-back distance specifically at the corner of the fiber rather than uniformly across the entire fiber or at the center. This localized measurement approach requires minimal arc power application, preventing SiO2 deposition on electrodes while still providing accurate calibration data through automated image analysis of the corner region
Solution Approach 2:
The patent uses partial action by applying only the minimum necessary arc power to create a measurable melt-back at the fiber corner, rather than melting long portions of the fiber as in traditional methods. This partial melting approach is sufficient for calibration when combined with automated image processing, and it prevents excessive SiO2 deposition on the electrodes
3Adaptability or versatility
If electrode gap is adjusted for different fiber diameters, then appropriate heat can be supplied, but heat generation varies due to mechanical and electrical tolerances
Solution Approach 1:
The patent implements feedback by using automated image processing to measure the actual melt-back distance at the fiber corner and comparing it to expected values. This feedback mechanism allows the system to detect variations in heat generation caused by mechanical and electrical tolerances in electrode gap positioning, and to adjust subsequent arc parameters to compensate for these variations, ensuring consistent calibration across different fiber diameters
Solution Approach 2:
The patent applies parameter changes by adjusting arc power and duration based on measured melt-back distances and fiber characteristics. The system dynamically modifies these parameters to compensate for variations in electrode gap positioning and to adapt to different fiber diameters, ensuring reliable and consistent heat generation across varying conditions through iterative calibration
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
This approach ensures consistent fiber fusion temperatures and improved splice quality by compensating for variations in electrode gaps and fiber diameters, reducing the need for repeated splicing processes and minimizing electrode deposits, thus enhancing the reliability and efficiency of the fusion splicing process.
Implementation Method 1
The source of heat is usually an electric arc
Implementation Method 2
The source of heat is usually an electric arc, but can also be a laser, or a gas flame, or a tungsten filament through which current is passed
Implementation Method 3
heating ends of a first and second fiber with an arc... measuring fiber end melt-back
Data Source
AI summary
A method of calibrating a fusion splicer, including: heating ends of a first and second fiber with an arc; measuring fiber end melt-back at a corner of the first fiber and a corner of the second fiber; increasing the heat of the arc and heating the ends of the first and second fibers with the arc; measuring fiber end melt-back at the corner of the first fiber and the corner of the second fiber; determining a slope of the fiber end melt-back; and based on said slope, setting a value to adjust the heat produced by the splicer.