Optical Fiber Connector Tuning for Low-Loss Ferrule Alignment
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Solution Overview
Problem
Single mode optical fibers require precise alignment due to tighter mechanical tolerances, leading to significant signal losses when connectors are not perfectly centered, which is difficult to achieve in field terminations.
Innovation Solution
A fiber optic connector with a polygonal biasing member that allows the ferrule to float and be tuned to a centered position, maintaining alignment under mechanical loads by using a polygonal spring to secure the ferrule assembly in multiple predetermined positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional connectors with simple alignment mechanisms are used, then device complexity is reduced, but manufacturing precision and alignment accuracy deteriorate
Solution Approach 1:
The connector is divided into separate functional modules: a first connector component with a first alignment mechanism and a second connector component with a second alignment mechanism. Each component can be independently manufactured and assembled, allowing high precision alignment without requiring a single complex monolithic structure.
Solution Approach 2:
An intermediary coupling mechanism is introduced between the first and second connector components. This intermediary structure facilitates precise alignment and coupling between the two components, enabling high manufacturing precision while keeping each individual component relatively simple.
2Manufacturing precision
If multiple alignment mechanisms are implemented to improve alignment accuracy, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The alignment function is segmented into two independent alignment mechanisms: a first alignment mechanism in the first connector component and a second alignment mechanism in the second connector component. Each mechanism can be optimized and manufactured separately, then combined to achieve overall high precision without requiring a single complex alignment system.
Solution Approach 2:
The patent combines two separate alignment mechanisms into a unified connector system where the first and second alignment mechanisms work together. This merging approach allows the benefits of multiple precision alignment systems while distributing the complexity across separate manufacturable components.
3Reliability
If complex alignment mechanisms are used to minimize signal losses, then signal transmission quality is improved, but ease of manufacture deteriorates
Solution Approach 1:
The connector is segmented into first and second connector components that can be manufactured separately using standard fabrication processes. Each component has its own alignment mechanism, which simplifies the manufacturing of individual parts while the assembly of these pre-manufactured components achieves the required signal transmission quality.
Solution Approach 2:
The alignment mechanisms are pre-configured within each connector component during manufacturing. This preliminary alignment setup ensures that when the components are assembled, the fiber alignment is already optimized for minimizing signal losses, without requiring complex real-time adjustment mechanisms.
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
Reduces signal transmission losses by ensuring consistent alignment and flexibility of the ferrule assembly, minimizing disruptions from external mechanical loads and maintaining contact between optical fiber ends.
Implementation Method 1
an optical fiber, which transmits a signal from one location to another
Data Source
Figure 1A
Figure 1B
Figure 2
AI summary
An optical fiber connector for achieving reduced signal transmission losses includes a ferrule basket portion configured to hold a ferrule portion and be disposed in one of a plurality of predetermined tuning positions, a carrier portion configured to engage the ferrule basket portion, and a polygonal biasing member configured to engage the ferrule basket portion and the carrier portion so as to maintain the ferrule basket portion at one of the plurality of predetermined tuning positions and mitigate against signal transmission losses between the ferrule portion and a mating ferrule when the ferrule basket portion is at the one of the plurality of predetermined tuning positions.