Optical Fiber Core Positioning from Time-Weighted Luminance
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Solution Overview
Problem
Existing fusion splicing devices face challenges in accurately specifying the position of the core of optical fibers due to insufficient microscope resolution, leading to inaccuracies in determining the peak of luminance waveforms.
Innovation Solution
A fusion splicing device and method that involves acquiring luminance information multiple times with a time difference, using a distribution information acquisition unit to specify the core position by weighting earlier luminance information more heavily than later information to account for broadening peaks over time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the microscope resolution is insufficient, then the device complexity is reduced, but the measurement precision of core position deteriorates
Solution Approach 1:
The patent applies preliminary action by acquiring multiple luminance images at different time points before final core position determination. By capturing images during the heating process when the core emits intense light, the system prepares multiple candidate images that can be processed to overcome the limitations of insufficient microscope resolution. This preliminary multi-temporal image acquisition enables subsequent processing to extract accurate core position information even when individual images have low resolution.
Solution Approach 2:
The patent implements feedback by using the luminance information from multiple time points to iteratively determine the core position. The system processes the sequence of luminance images, using the temporal evolution of the luminance waveform to feedback-correct the peak position detection. This feedback mechanism allows the system to compensate for resolution limitations by analyzing how the luminance distribution changes over time, thereby improving measurement precision without requiring higher microscope resolution.
2Measurement precision
If luminance information is acquired multiple times with time difference, then the measurement precision is improved, but the loss of time increases
Solution Approach 1:
The patent applies periodic action by acquiring luminance information at multiple discrete time points during the heating process. Instead of continuous acquisition, the system takes periodic snapshots of the luminance distribution at strategically chosen moments. This periodic sampling approach balances measurement precision with time efficiency, capturing sufficient temporal evolution information to improve core position accuracy while avoiding excessive time consumption that would result from continuous monitoring.
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
Improves the accuracy of core position specification by utilizing the intense light emission property of the core, suppressing variations, and excluding abnormal data, resulting in precise core positioning even with fixed microscopes or low resolution.
Implementation Method 1
a discharge electrode generating the discharge... the optical fiber heated by receiving the discharge
Implementation Method 2
images of thermoluminescence generated from the core and clad of the optical fiber heated by the discharge are acquired
Data Source
AI summary
A fusion splicing device according to one embodiment includes: a discharge electrode; a microscope acquiring luminance information from the optical fiber; a distribution information acquisition unit acquiring distribution information indicating a relationship between a position of the optical fiber in a radial direction and the luminance information; and a core position specification unit specifying a position of a core of the optical fiber from the distribution information. The microscope acquires the luminance information multiple times. The distribution information acquisition unit acquires the distribution information from each of a plurality of the luminance information. The core position specification unit specifies the position of the core of the optical fiber by performing weighting so that a weight of the distribution information based on the luminance information acquired earlier is allowed to be equal to or heavier than a weight of the distribution information based on the luminance information acquired later.