Optical Component Zigzag Trace Layout for Damage Sensing
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Solution Overview
Problem
Conductive traces in optical modules are ineffective in detecting damage to active regions, such as lenses or flat optics metasurfaces, leading to potential harm from excessive light emission.
Innovation Solution
The optical component features a conductive trace with parallel zigzag legs, each comprising multiple straight segments, positioned and spaced to detect damage while minimizing light transmission loss, using predetermined shapes and angles to ensure comprehensive coverage and adherence to maximum allowable damage thresholds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conductive trace is placed around the active region to detect damage, then damage detection capability is improved, but light transmission loss increases
Solution Approach 1:
The conductive trace is divided into multiple discrete segments rather than forming a continuous path. Each segment is positioned to detect specific damage locations, while the gaps between segments minimize light blockage. This segmentation allows the trace to maintain electrical conductivity for damage detection while reducing optical interference with light transmission through the active region.
2Reliability
If the conductive trace is made more extensive to cover more damage areas, then detection coverage is improved, but light transmission loss increases
Solution Approach 1:
The conductive trace segments are strategically positioned at specific locations where damage detection is most critical, rather than uniformly distributed across the entire active region. Each segment is placed to monitor particular high-risk areas, providing effective detection coverage while minimizing the total trace length and associated light blockage.
3Measurement precision
If the conductive trace is positioned closer to the light source, then detection sensitivity is improved, but light transmission loss increases
Solution Approach 1:
The conductive trace segments are positioned in the vertical dimension (depth) rather than solely in the horizontal plane. By placing segments at different depths within the active region, the design achieves close proximity to the light source for high detection sensitivity while the segments remain distributed in three-dimensional space, minimizing continuous horizontal path length and associated light blockage.
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 active regions, ensuring safe light emission levels while maintaining low transmission loss, thus protecting against harmful light exposure.
Implementation Method 1
monitor an electrical characteristic (e.g., resistance) of the conductive trace. Damage to the active region that also impinges on the conductive trace will typically cause a change in the electrical characteristic that can be detected
Data Source
AI summary
In accordance with various embodiments of the present disclosure, an optical component is provided. In some embodiments, the optical component comprises a first active region and an electrically conductive trace comprising at least a first leg and a second leg both on a surface of or embedded in the first active region. The first and second legs each comprise at least substantially straight first, second, and third segments. The second segment of the first leg is positioned at an angle relative to the first and third segments of the first leg. The second segment of the second leg is positioned at an angle relative to the first and third segments of the second leg. The first segments of the first and second legs are substantially parallel. The second segments of the first and second legs are substantially parallel. The third segments of the first and second legs are substantially parallel.