Optical Link Alignment via Camera-Based Positioning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Establishing stable optical links between mobile and stationary devices for applications like quantum key distribution is challenging due to high losses and the difficulty in steering and maintaining laser beams over short distances in free space.
Innovation Solution
A method and apparatus that determine the relative positioning of mobile and target devices using elements like digital cameras, image recognition, and sensors to align optical components, enabling efficient steering and stabilization of optical beams for secure communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If laser beams are used for free-space optical communication, then data transfer speed is improved, but signal loss increases due to beam steering difficulties over short distances
Solution Approach 1:
The system performs preliminary positioning and alignment actions before establishing the optical link. The mobile device determines its position relative to the target device and pre-aligns the laser beam direction, ensuring the beam is correctly directed before transmission begins, thereby reducing signal loss due to misalignment
Solution Approach 2:
The system continuously monitors the optical link quality and beam alignment status, using feedback information to adjust the laser beam direction and focus in real-time. This closed-loop control maintains optimal signal strength and minimizes loss during data transfer
2Device complexity
If manual alignment of optical components is used, then device complexity is reduced, but link stability deteriorates due to difficulty in maintaining alignment over time
Solution Approach 1:
The system employs self-aligning optical components that automatically adjust and maintain proper alignment without requiring complex manual intervention. The optical components are designed to self-correct minor misalignments, providing stable links while keeping the overall device complexity low
Solution Approach 2:
The system replaces complex mechanical alignment mechanisms with software-based control and electronic steering. Instead of using complex mechanical gimbals or adjustment mechanisms, the patent uses electronically controlled mirrors or phased arrays to maintain beam alignment, reducing mechanical complexity while improving stability
3Ease of operation
If optical components are directed manually, then ease of operation is improved, but manufacturing precision requirements increase for maintaining beam direction
Solution Approach 1:
The system replaces manual mechanical beam steering with electronically controlled optical switching or phased array technology. This allows operators to easily change beam direction through software control while the system automatically compensates for manufacturing tolerances, reducing the impact of precision requirements
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 reduces signal loss and maintains stable optical links for extended periods, enhancing security and data transfer efficiency in applications such as quantum key distribution and wireless communications.
Implementation Method 1
determining information of a target device by means of at least one element of a mobile device for providing an optical link with the target device
Data Source
AI summary
Methods and apparatuses for communication between a mobile device and a target device are disclosed. Information of a target device is determined by means of at least one element of a mobile device for providing an optical link with the target device. An optical component of the mobile device is then aligned with an optical component of the target device based on said information determined by the mobile device. The target device can obtain information of relative positioning of the target device and the mobile device determined for the purposes of providing an optical link between the target device and the mobile device and the optical component thereof can be aligned with the optical component of the mobile device based on the information.