Multi-Ferrule APC Connector Polarity Reversal by 180° Rotation
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Solution Overview
Problem
Current multi-ferrule fiber optic connectors require complex and time-consuming processes for polarity reversal, involving multiple steps and tools, which increases the risk of damage to the ferrules and optical fibers.
Innovation Solution
A duplex connector design where the fiber optic ferrules are initially polished in different orientations within the connector, allowing polarity reversal by simply rotating the connector 180 degrees without touching the ferrules, reducing the need for additional tools and handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If polarity reversal is performed by rotating the key and then rotating each ferrule separately, then polarity can be corrected, but the process becomes time-consuming and complex
Solution Approach 1:
The patent combines the ferrule rotation function with the key rotation mechanism. When the key is rotated 180 degrees, it automatically rotates both ferrules simultaneously through the keyway structure, eliminating the need for separate ferrule rotation steps and reducing the overall polarity reversal time.
Solution Approach 2:
The key structure serves multiple functions: it provides polarity identification through visual indicators, enables connector assembly/disassembly, and simultaneously rotates both ferrules when turned. This multi-functionality eliminates the need for separate tools or steps to rotate individual ferrules.
2Reliability
If polarity reversal requires separate rotation of each ferrule with additional tools, then correct orientation can be achieved, but the risk of ferrule and fiber damage increases
Solution Approach 1:
By merging the ferrule rotation mechanism with the key rotation, the patent eliminates the need for separate ferrule handling. The ferrules remain secured to the connector body throughout the key rotation process, preventing damage from manual manipulation or additional tools.
Solution Approach 2:
The connector structure itself provides the rotation mechanism through the keyway design. The ferrules are automatically rotated as an integrated part of the key rotation process, eliminating the need for external tools that could cause damage to the fragile ferrule surfaces or fiber tips.
3Reliability
If both ferrules are rotated 180 degrees for polarity reversal, then correct end face orientation is maintained, but the process requires additional tools and steps
Solution Approach 1:
The patent merges the rotation of both ferrules into a single key rotation operation. The keyway structure ensures that when the key is rotated 180 degrees, both ferrules are simultaneously rotated by the same amount, maintaining correct end face orientation without requiring separate rotation steps or additional tools.
Data Source
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AI summary
A fiber optic connector has at least two optical fibers therein have end faces that are positioned such that they are directed in different directions. The end faces can be oriented relative to a key that is provided on a fiber optic connector housing that has a central opening in the main body of the fiber optic connector.