Programmable Waveguide Mesh Configuration for Low-Interference Photonics
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Solution Overview
Problem
Scalable programmable optical circuits with a large number of tunable basic units (TBUs) face performance degradation due to excessive optical interference and increased complexity, making conventional configuration and optimization techniques inadequate for achieving reliable and efficient operation.
Innovation Solution
A method involving the segmentation of the mesh into smaller TBU units, spectral characterization through the dispersion matrix, and optimization algorithms to modify TBU parameters, enabling performance improvement by reducing losses, interference, and power consumption, while using machine learning for circuit self-correction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the number of TBUs in the waveguide mesh is increased to implement more complex structures, then the functionality and scalability of the photonic circuit are improved, but excessive optical interference and performance degradation occur
Solution Approach 1:
The mesh is divided into smaller segments or groups of TBUs, allowing independent optimization and characterization of each segment. This segmentation reduces the overall complexity and optical interference by breaking down the large-scale mesh into manageable units that can be optimized separately.
Solution Approach 2:
The invention modifies physical parameters such as waveguide dimensions, coupling coefficients, and TBU configurations to optimize performance. By changing these parameters, the system achieves better signal-to-noise ratios and reduced interference while maintaining scalability to larger numbers of TBUs.
2Device complexity
If conventional configuration techniques are used for large-scale meshes, then the device complexity is reduced, but the configuration becomes less reliable and performance deteriorates
Solution Approach 1:
Different regions or segments of the mesh are configured with different optimization strategies tailored to their specific characteristics. This local quality approach allows each segment to be optimized independently, improving overall configuration reliability without requiring complex global optimization of the entire mesh.
Solution Approach 2:
The invention performs preliminary spectral characterization and optimization of individual TBU units and segments before assembling them into the complete mesh. This preliminary action ensures that each component is pre-optimized, reducing the need for complex post-assembly configuration and improving overall reliability.
3Object-affected harmful factors
If the mesh is optimized to reduce optical interference, then the signal-to-noise ratio is improved, but the device complexity and optimization complexity increase
Solution Approach 1:
The optimization process is segmented into independent steps for different mesh regions and TBU groups. This allows interference reduction to be achieved through localized optimizations rather than requiring complex global optimization, reducing the overall optimization complexity while maintaining effectiveness.
Data Source
AI summary
The method object of the invention enables the scalable configuration and performance optimisation to be carried out for programmable optical circuits based on meshed structures, in such a way that they can perform optical/quantum signal processing functions. The object of the invention can be applied in circuits with arbitrary degrees of complexity implemented by means of programming a waveguide mesh. The method object of the invention enables not only the analysis and evaluation of performance to be carried out, but also the subsequent programming and optimisation of programmable optical devices.