MEMS Optical Switch Alignment Using Co-Aligned Control Beams
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Solution Overview
Problem
Optical circuit switches (OCS) face challenges in accurately aligning optical beams, leading to computational inefficiencies and latency issues due to the need for converting optical signals to electronic signals for processing, which can be slow and costly.
Innovation Solution
An optical switch system utilizing a MEMS mirror array, beam combiners, and image sensors to align optical communication signals, employing hardware processors to determine and adjust the intensity and position of control beams for precise alignment, and potentially using machine learning for calibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If electrical packet switches are used to direct data packets, then routing functionality is achieved, but signal conversion to electronic domain increases latency and power consumption
Solution Approach 1:
The patent replaces electrical/electronic signal processing with optical signal processing. Optical circuit switches use light signals to directly route data packets between nodes without converting to electronic signals, eliminating the O/E/O conversion latency and reducing power consumption while maintaining routing functionality
Solution Approach 2:
The patent introduces control beams as intermediary optical signals that guide the routing of data packets. These control beams interact with optical components (such as optical switches or directional couplers) to establish communication paths, enabling optical-domain routing control without electronic conversion
2Productivity
If optical circuit switches are used for all-optical switching, then latency and power consumption are reduced, but beam alignment precision becomes critical
Solution Approach 1:
The patent implements feedback mechanisms using control beams that carry alignment information. Image sensors detect the position of control beams, and this information is fed back to adjust the positioning of optical components or modify the control beam paths, enabling dynamic alignment optimization and compensation for manufacturing tolerances
Solution Approach 2:
The patent uses adjustable parameters of control beams (such as intensity, wavelength, or spatial distribution) to encode alignment information and dynamically optimize beam paths. By changing these parameters, the system can adapt to alignment requirements without requiring ultra-precise manufacturing
3Measurement precision
If control beam intensity is increased for better detection, then alignment accuracy improves, but optical component damage risk increases
Solution Approach 1:
The patent uses partial action by employing low-intensity control beams that are sufficient for detection purposes without exceeding the damage thresholds of optical components. The control beams carry only the necessary information for alignment and routing control, using minimal intensity to avoid harmful effects while maintaining measurement precision
Solution Approach 2:
The patent uses control beams as optical copies or proxies that carry alignment information without requiring high intensity. These control beams replicate the path and positioning information needed for alignment, allowing detection at low intensities that prevent damage to optical components
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
Enhances beam alignment accuracy, reduces latency, and improves operational efficiency by maintaining alignment without the need for electronic signal conversion, thus optimizing bandwidth and power consumption.
Implementation Method 1
a beam combiner configured to combine a communication beam and the control beam into a co-linear path towards a MEMS mirror
Implementation Method 2
a beam splitter configured to split the communication beam and the control beam after reflection by the MEMS mirror
Implementation Method 3
a microelectromechanical (MEMS) mirror array
Data Source
Figure 1A
Figure 1B~1C
Figure 1D
AI summary
Disclosed are systems and methods associated with an improved optical switch. An optical switch may include light sources configured to produce a set of control beams co-aligned with a communication beam and that interact with each of a set of MEMS mirrors. Each of the set of control beams are passed through a respective screen so as to generate an image corresponding to a layout of an associated MEMS mirror that can then be analyzed to affect an operation of the optical switch, such as by managing an orientation and/or position of each MEMS mirror. In some aspects, the one or more hardware processors may utilize AI techniques to reduce processing time and learn behavior of the optical switch. In some aspects, the system may utilize the information to generate alerts and/or information relating to the end of life or other operational parameters of the optical switch.