Optical Fiber Connector Ferrule Tuning for Lower Signal Loss
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Solution Overview
Problem
Single mode optical fibers require precise termination due to tighter mechanical tolerances, leading to significant signal losses when fibers are not perfectly aligned, which is challenging to achieve in the field without specialized equipment.
Innovation Solution
An optical fiber connector with a ferrule assembly and a polygonal biasing member that allows the ferrule to float and rotate to optimize alignment, minimizing signal losses by maintaining the ferrule in a predetermined position using a hexagonal or polygonal spring to prevent rotation and ensure alignment with a mating ferrule.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If single mode optical fiber is terminated in the field using conventional methods, then field termination capability is achieved, but signal transmission losses increase due to misalignment
Solution Approach 1:
The ferrule assembly is made dynamically adjustable through the polygonal biasing member that allows rotational movement. The ferrule can rotate to different angular positions and the connector can be tuned by rotating the ferrule assembly to optimize alignment, transforming a static structure into a dynamic one that adapts to minimize signal losses while maintaining field termination capability
Solution Approach 2:
The invention changes the angular orientation parameter of the ferrule relative to the connector body by introducing the polygonal biasing member with multiple engagement positions. By adjusting the angular position parameter of the ferrule assembly, optimal alignment can be achieved to minimize insertion losses while preserving ease of field termination
2Ease of manufacture
If the ferrule is fixed in position within the connector, then manufacturing simplicity is maintained, but alignment precision with mating ferrules deteriorates
Solution Approach 1:
The connector enables self-alignment through the polygonal biasing member that allows the ferrule to be tuned to optimal positions. The field technician can rotate the ferrule assembly to achieve precise alignment without requiring complex manufacturing tolerances or specialized equipment, making the system self-correcting while maintaining manufacturing simplicity
Solution Approach 2:
The polygonal biasing member is pre-configured with multiple predetermined angular positions that facilitate preliminary alignment. The ferrule assembly can be rotated to predetermined positions during installation to achieve optimal alignment before final connection, improving precision without complicating the manufacturing process
3Stability of the object's composition
If the ferrule is rigidly constrained in the connector, then structural stability is improved, but adaptability to mechanical loads and alignment optimization deteriorates
Solution Approach 1:
The polygonal biasing member creates a semi-dynamic system where the ferrule assembly can rotate to different angular positions and float to optimize alignment under various mechanical loads. This dynamic capability allows the connector to adapt to different installation conditions while maintaining overall structural stability through the biasing mechanism
Solution Approach 2:
The connector uses a composite structure combining the rigid connector body with the flexible polygonal biasing member. This composite design provides both structural stability from the rigid housing and adaptability from the flexible biasing mechanism that allows ferrule rotation and floating to optimize alignment under mechanical loads
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 connector effectively reduces signal transmission losses by allowing the ferrule to adjust and maintain alignment under mechanical loads, ensuring consistent contact and minimizing insertion and return losses.
Implementation Method 1
a biasing member configured to be disposed between the ferrule basket and the carrier... and the biasing member is configured to bias the ferrule assembly toward a front abutment surface of the carrier
Implementation Method 2
the biasing member is configured to maintain the ferrule in the optimized position and to prevent rotation of the ferrule relative to the carrier
Data Source
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.