Optical Fiber Damage Detection via Sacrificial Conductive Link
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Optical fibers used for conducting radiation or light can break or become damaged, and existing detection methods are not sufficiently reliable or efficient in detecting such damage, particularly for short-wave radiation like UV, which can be harmful.
Innovation Solution
A light-emitting device with a light guide and detection system, where the light guide has a core area with a higher refractive index than the cladding area, allowing detection of damage through reflection and interference, and includes electrically conductive connections that are more brittle than the core, ensuring they break before the light guide, and a converter material that converts short-wave radiation into visible light for reliable detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing detection methods are used to detect damage in optical fibers, then some detection capability is provided, but the detection reliability is insufficient particularly for short-wave radiation
Solution Approach 1:
The patent introduces an intermediary detection mechanism using electrically conductive connections that run through the light guide. These conductive connections act as a mediator that translates optical damage into electrical signals that can be reliably detected. When the light guide is damaged, the conductive connection is also affected, providing a reliable electrical indicator of optical fiber integrity, thereby solving the difficulty of directly detecting optical damage.
Solution Approach 2:
The patent replaces direct optical detection methods with an electrical detection system. Instead of attempting to directly detect optical damage which is difficult particularly for short-wave radiation, the system uses electrical measurements of conductive connections to infer the state of the optical fiber. This substitution of mechanical/electrical detection for optical detection significantly improves reliability.
2Strength
If the light guide is made more durable, then its strength is improved, but the electrically conductive connections become the weak link and may break before the light guide
Solution Approach 1:
The patent deliberately creates a sacrificial weak link in the form of electrically conductive connections that are more brittle than the light guide. This beforehand cushioning ensures that the conductive connection fails first under mechanical stress, providing an early warning signal before the light guide itself is damaged. The conductive connection acts as a protective weak element that sacrifices itself to protect the more valuable light guide.
Solution Approach 2:
The system performs preliminary damage detection through the conductive connection before actual light guide failure occurs. By monitoring the integrity of the conductive connection that is designed to fail first, the system can take preliminary protective actions before the light guide is compromised, ensuring continuous reliable indication of the light guide's functional state.
3Measurement precision
If converter material is used to convert short-wave radiation into visible light, then detection capability is improved, but the device complexity increases
Solution Approach 1:
The patent extracts the conversion function from a separate detection device and integrates it directly into the light guide structure itself. The converter material is incorporated within the light guide, eliminating the need for external conversion components and reducing overall device complexity while maintaining improved detection precision for short-wave radiation.
Solution Approach 2:
The patent merges multiple functions into the light guide structure: light transmission, damage detection, and wavelength conversion. By combining the converter material with the light guide, the system achieves precise detection of short-wave radiation damage without requiring separate conversion devices, thereby reducing overall system complexity while maintaining high measurement precision.
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 solution effectively detects damage to the light guide, preventing the emission of potentially harmful short-wave radiation by switching off the energy supply when damage is detected, and enhances the reliability and safety of light transmission systems.
Implementation Method 1
the core area of the light guide z. B. by reflection and interference due to the refractive index jump from the core to the cladding region light or radiation
Implementation Method 2
the core area of the light guide z. B. by reflection and interference due to the refractive index jump from the core to the cladding region light or radiation
Implementation Method 3
the core area has a higher refractive index than the cladding area
Implementation Method 4
a converter material being present at the second end, which converts radiation of a first wavelength transported through the light guide into light with a second wavelength
Data Source
Figure 1A~1B
Figure 2A~2B
Figure 3A~3B
AI summary
An embodiment of the invention relates to an arrangement comprising a fiber-optic waveguide (10) and a detection device (25), said fiber-optic waveguide (10) having a core zone (10E) and an envelope zone (10E), the core zone having a higher refractive index than the envelope zone, and the detection device (25) being capable of detecting damages to the fiber-optic waveguide (10).