Modular Optical Array System for Scalable Free Space Communication
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Solution Overview
Problem
Existing monolithic free space optical (FSO) systems are difficult to scale and configure for larger apertures, requiring complex and bulky optics, precision pointing, and extensive rework, making them challenging to manufacture and replicate for multiple systems.
Innovation Solution
A scalable optical array system comprising multiple optical array assemblies with lenses, electro-optic modulators, angle sensors, and a steering system, which can be combined within a single enclosure, allowing independent pointing and easy reconfiguration, and connected via a single cable, enabling efficient scaling of the collection aperture without the need for extensive rework.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a monolithic FSO system is designed to accommodate a larger collection aperture, then the system can achieve higher data rates and longer transmission distances, but the system becomes large, bulky, and complex requiring precision pointing and extensive rework
Solution Approach 1:
The patent divides the monolithic optical front end into multiple modular optical array assemblies, each containing a subset of optical lenses and associated components. These modules can be independently manufactured, tested, and then combined to form the complete system with the desired collection aperture, thereby reducing overall system complexity while achieving the required aperture size.
Solution Approach 2:
The patent designs universal interface standards and common support structures that allow the same modular optical array assemblies to be configured in different arrangements to achieve various collection aperture sizes. This multi-functionality enables a single module design to serve multiple system configurations, reducing the need for custom-designed bulky optics for each aperture size.
2Measurement precision
If a monolithic FSO system is customized to accommodate a larger collection aperture, then the system performance is improved, but the system becomes difficult to manufacture and replicate for multiple systems
Solution Approach 1:
By segmenting the optical front end into standardized modules, each module can be manufactured using the same production line and quality control processes. This modular approach enables batch production and replication of identical units, significantly improving ease of manufacture compared to custom-built monolithic systems while still allowing customization of the final aperture size through module arrangement.
Solution Approach 2:
The patent employs standardized interface parameters and mounting configurations that remain constant across different system configurations. By changing only the number and arrangement of modular assemblies rather than the fundamental design parameters, the system can be easily manufactured and replicated while achieving different collection aperture sizes.
3Measurement precision
If a monolithic FSO system uses precision pointing across an optical train, then the system achieves accurate beam alignment, but the system becomes very large and requires extensive rework for configuration
Solution Approach 1:
The patent divides the optical train into multiple compact optical array assemblies, each with its own steering and pointing mechanisms. This segmentation allows each module to be independently aligned and pointed, reducing the overall length of the optical train while maintaining precise beam alignment through coordinated control of the modular components.
Solution Approach 2:
The patent transitions from a single long optical train to a three-dimensional arrangement of modular optical assemblies. By distributing the optical components in multiple dimensions and using parallel optical paths, the system achieves the required beam alignment precision without requiring a single extended optical train, thereby reducing the overall system footprint.
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 provides a compact, lightweight, and easily configurable system that can scale to large apertures with significant space, weight, and power savings, simplifying installation and maintenance while optimizing performance across the collection aperture.
Implementation Method 1
Each optical array system also includes a plurality of electro-optic modulators, each coupled to one of the plurality of optical array assemblies
Implementation Method 2
coupling the plurality of optical connectors via a plurality of respective optical fibers to one of a plurality of electro-optic modulators
Implementation Method 3
Each optical array assembly includes an optical array having a plurality of optical lenses
Implementation Method 4
an angle sensor, a steering system and a base
Data Source
AI summary
A scalable front end system for a high speed free space optical (FSO) communication system includes multiple optical array assemblies. Each optical array assembly includes an optical array, an angle sensor, a steering system and a base. The multiple optical array assemblies are coupled to respective electro-optic modulators, which in turn are coupled to a splitter, all disposed within an enclosure with one input/output connection.