Integrated Lens and Vortex Profile Optical Component
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Solution Overview
Problem
The use of a vortex phase plate in optical communication systems for reducing differential modal dispersion (DMD) in multimode fibers increases the complexity of light axis adjustment, particularly in array-type optical systems, making it difficult to align multiple optical components.
Innovation Solution
An optical component comprising a stack of two layers with different refractive indices, where one layer has a lens and the other a vortex profile, allowing for easier light axis adjustment by integrating the vortex profile and lens functions into a single component, thereby simplifying the alignment process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a vortex phase plate is provided between light source and multimode fiber, then DMD is reduced, but light axis adjustment becomes more difficult
Solution Approach 1:
The patent combines the vortex phase plate and the lens into a single integrated optical component. The vortex profile is formed on one surface of the component while the lens profile is formed on the opposite surface, allowing both functions to be achieved in one element rather than requiring separate components that need individual alignment.
Solution Approach 2:
The optical component serves multiple functions simultaneously: it generates the optical vortex to reduce DMD, focuses or diverges the light beam through the lens function, and maintains a planar exit surface for easy coupling to the multimode fiber. This multi-functionality eliminates the need for multiple separate components.
2Reliability
If multiple optical components are used in array-type optical system, then optical vortex generation is achieved, but alignment complexity increases
Solution Approach 1:
By merging the vortex generation function and the lens function into a single component, the patent reduces the number of elements that need to be aligned in array-type systems. Each integrated component can be positioned independently, simplifying the overall alignment process compared to coordinating multiple separate components.
Solution Approach 2:
The optical component is designed with distinct functional regions: a vortex profile on one surface and a lens profile on the other surface. This segmentation of functions within a single integrated structure allows for simplified manufacturing and deployment in arrays, as each component is self-contained and requires alignment of only one element rather than multiple separate 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
This solution reduces the complexity of light axis adjustment in optical systems, improving transmission performance by eliminating direct incidence on the central core of the multimode fiber and reducing DMD, while maintaining high-speed communication capabilities.
Implementation Method 1
A lens is formed on the first principal surface of the first layer
Implementation Method 2
A vortex profile has a continuous or step-like spiral profile and generates an optical vortex when transmitting light from a laser or the like
Implementation Method 3
the first layer and the second layer are stacked such that the second principal surface and the third principal surface are in contact
Data Source
AI summary
An optical component includes: a first layer made of a first material having a first refractive index, the first layer including a first principal surface and a second principal surface opposite to the first principal surface; and a second layer made of a second material having a second refractive index different from the first refractive index, the second layer including a third principal surface and a fourth principal surface opposite to the third principal surface, and the first layer and the second layer are stacked such that the second principal surface and the third principal surface are in contact. A lens is formed on the first principal surface of the first layer, and a vortex profile is formed on the third principal surface of the second layer.