Optical Fiber Etching for Radiation Absorption
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current optical fibers used in lithographic apparatuses face challenges with radiation absorption and scattering due to surface contaminants and stress, leading to reduced damage thresholds and mechanical performance.
Innovation Solution
A method involving a manufacturing intermediate with an outer tube and inner tubes arranged in ring structures, where the internal surface is etched to remove contaminants and reduce stress before drawing into a hollow-core anti-resonant-reflecting fiber, improving the surface quality and optical properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional optical fibers are used without surface treatment, then manufacturing is simpler, but radiation absorption and scattering increase due to surface contaminants and stress
Solution Approach 1:
The patent applies preliminary action by performing etching of the internal surface during the manufacturing process before the fiber is completed and deployed. This advance treatment removes contaminants and reduces stress on the internal surface, preventing future radiation absorption and scattering issues. The etching step is incorporated into the manufacturing workflow, so the fiber enters service already optimized for its intended application.
2Loss of energy
If internal surface etching is performed to remove contaminants, then radiation absorption decreases, but manufacturing complexity increases
Solution Approach 1:
The patent utilizes the etching process to create a modified surface structure on the internal wall of the optical fiber. This treatment creates a surface with controlled porosity or texture that reduces radiation absorption and scattering. The etched surface structure acts similarly to porous materials by interacting with radiation in a beneficial way, reducing energy loss while the process is integrated into standard manufacturing.
3Strength
If internal surface etching is performed to reduce stress, then mechanical performance improves, but manufacturing complexity increases
Solution Approach 1:
The patent applies parameter changes by modifying the physical-chemical parameters of the internal surface through etching. This process alters the surface stress state, microstructure, and mechanical properties of the internal wall. By controlling etching parameters such as duration, chemical composition, and temperature, the manufacturing process optimizes mechanical performance while keeping the process integrated and manageable within existing manufacturing capabilities.
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 enhances the optical fiber's ability to guide radiation with reduced absorption and scattering, increasing the damage threshold and mechanical performance by creating a smoother, contaminant-free surface.
Implementation Method 1
etching the internal surface of the manufacturing intermediate using an etching substance
Data Source
AI summary
An optical fiber, manufacturing intermediate for forming an optical fiber and a method for forming an optical fiber. The method includes providing a manufacturing intermediate having an elongate body and having an aperture extending through the elongate body along an axial dimension of the elongate body, a boundary of the aperture defining an internal surface of the manufacturing intermediate. The method further includes etching the internal surface of the manufacturing intermediate using an etching substance, and drawing the manufacturing intermediate along the axial dimension so as to form the optical fiber.