Electro-chromic Extra-mural Absorption Layer for Optical Cross-talk
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Solution Overview
Problem
Existing optical fiber components that incorporate light-absorbing materials to suppress cross-talk and enhance contrast are complex, expensive, and introduce aberrations, with glass-based materials requiring early incorporation and fixed light-absorbing capacity.
Innovation Solution
Incorporation of an electro-chromic extra-mural absorption layer made from non-glass polymeric or glass-based materials, which can adjust opacity in response to electrical current or potential difference, applied to the side surface of light-guiding elements or within a matrix, allowing for adjustable light absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If glass-based EMA materials are incorporated into optical fiber components, then light absorption capability is improved, but device complexity and fabrication expense increase
Solution Approach 1:
The patent changes the material parameter from glass-based EMA to electro-chromic polymer material, which can alter its light absorption properties through electrical control. This substitution simplifies fabrication by eliminating the need for complex glass handling and bonding processes while maintaining cross-talk suppression capability through the polymer's inherent light-absorbing properties.
Solution Approach 2:
The patent introduces dynamic control capability by using electro-chromic materials that can change their optical properties in response to electrical signals. This allows the light absorption capability to be adjusted dynamically, providing adaptability that static glass-based EMA materials cannot offer, thereby reducing the need for multiple fixed-configuration components.
2Object-affected harmful factors
If glass-based EMA materials are incorporated into optical fiber components, then light absorption capability is improved, but fabrication expense increases
Solution Approach 1:
The patent employs electro-chromic polymer materials that are generally less expensive to manufacture than precision glass components. These polymer-based solutions can be applied using simpler coating or infiltration techniques rather than requiring precision glass cutting, bonding, and alignment processes, thereby reducing fabrication expenses while achieving the required cross-talk suppression.
Solution Approach 2:
By changing from glass-based to polymer-based electro-chromic materials, the patent accesses a material class with lower processing costs. The polymer materials can be deposited using techniques such as spin-coating, dip-coating, or inkjet printing, which are more cost-effective than the specialized glass handling equipment and cleanroom facilities required for glass-based EMA implementation.
3Object-affected harmful factors
If glass-based EMA materials are incorporated into optical fiber components, then light absorption capability is improved, but image quality deteriorates due to aberrations
Solution Approach 1:
The patent changes the material properties by using electro-chromic polymers with different optical characteristics compared to glass. These polymer materials can be formulated to have refractive indices and absorption coefficients that minimize optical aberrations while maintaining cross-talk suppression, thereby improving image quality compared to traditional glass-based EMA materials.
4Object-affected harmful factors
If glass-based EMA materials are incorporated into optical fiber components, then light absorption capability is improved, but adaptability deteriorates due to fixed light-absorbing capacity
Solution Approach 1:
The patent introduces dynamic control by using electro-chromic materials that can change their optical density in response to applied voltage. This allows the system to adapt the light absorption capability dynamically, enabling features such as variable contrast adjustment, adaptive cross-talk suppression, and flexible imaging conditions that static glass-based EMA materials cannot provide.
Solution Approach 2:
The electro-chromic polymer material serves multiple functions: it provides cross-talk suppression, enables variable contrast control, and allows adaptive light absorption adjustment all through a single material system. This multi-functionality replaces the need for separate components for each function, thereby improving adaptability while maintaining cross-talk suppression capability.
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 solution simplifies fabrication, reduces complexity, and allows for adjustable light absorption, improving image quality by reducing cross-talk while avoiding the limitations of glass-based materials.
Implementation Method 1
an extra-mural absorption layer comprising an electro-chromic material the opacity of which—relative to a predetermined set of electro-magnetic wavelengths—is variable in response to a change in magnitude of at least one of (i) an electrical current applied through at least a portion of the layer and (ii) an electrical potential difference applied between disparate locations along the layer
Data Source
AI summary
An optical component includes at least one light-guiding element with a side surface extending between incident and emission faces between which light that is introduced into the incident face can propagate by internal reflection. Disposed over at least a portion of the side surface of at least one of the at least one light-guiding elements is an extramural absorption material that is configured to selectively absorb “stray light” that enters the incident face of the light-guiding element, but which exists through the side surface instead of the emission face. The absorption material is fabricated, at least in part, from an electro-chromic material exhibiting a translucency that is selectively adjustable in response to changes in at least one of (i) electrical current applied through at least a portion of the absorption material and (ii) an electrical potential difference applied between disparate locations within the absorption material.