Multidimensional Optical Storage With Light-Confining Buffer Layers
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Solution Overview
Problem
Current multidimensional optical storage technologies face challenges in confining write and read beams to specific layers, leading to increased complexity in optics, reduced precision, and lower throughput as data storage densities increase.
Innovation Solution
The implementation of layered optical storage media with buffer regions having higher refractive indices than data recording regions, which confine light to specific data layers using refractive index variations or gradients, allowing for precise delineation of data layers and improved read throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional optical storage media without buffer regions are used, then the structure is simpler, but light cannot be confined to specific data layers leading to increased optical complexity and reduced precision
Solution Approach 1:
The optical storage medium is segmented into distinct functional regions: data recording regions and buffer regions. The buffer regions act as optical barriers that segment and confine light to specific data layers, preventing cross-layer interference and enabling precise focusing without complex optical systems.
Solution Approach 2:
Buffer regions serve as intermediary elements between data recording regions. These buffer regions with higher refractive indices act as optical mediators that confine and guide light waves, enabling precise light confinement to specific data layers without requiring complex optical confinement mechanisms.
2Productivity
If data storage density is increased without buffer regions, then more data can be stored, but layer delineation becomes less precise leading to reduced read throughput
Solution Approach 1:
Different regions of the optical storage medium are assigned different optical properties. Buffer regions have higher refractive indices than data recording regions, creating local optical quality variations that enable precise layer delineation and improve read throughput through enhanced light confinement.
3Manufacturing precision
If buffer regions with higher refractive indices are implemented, then light confinement and layer delineation are improved, but the manufacturing process becomes more complex
Solution Approach 1:
The refractive index parameter is changed in buffer regions to be higher than in data recording regions. This parameter change enables light confinement and layer delineation functions. The refractive index can be varied continuously or discretely, providing flexibility in manufacturing while achieving the desired optical confinement effects.
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 data storage density and read throughput by clearly defining data layers, reducing optical complexity, and improving focusing precision.
Implementation Method 1
buffer regions having optical properties such that illumination from a reader that enters one of the data recording regions remains preferentially confined in said one of the data recording regions
Implementation Method 2
the buffer regions have a higher refractive index than the data recording regions. Each of the buffer regions may have a refractive index profile that varies through the buffer region thickness
Data Source
AI summary
Described are optical recording media for recording data in voxels, the optical recording media including a plurality of data recording regions for recording the voxels, the data recording regions separated by buffer regions having optical properties such that illumination from a reader that enters one of the data recording regions remains preferentially confined in said one of the data recording regions until being scattered by interaction with one or more of the voxels. Also described are methods for reading the described optical recording media, which include separating the light received from illuminating the voxels based on wavelength, polarization, or other optical properties.