Optical Fiber Connector Spring Mechanism for Signal Integrity
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Solution Overview
Problem
Conventional optical fiber connectors suffer from signal degradation when weight is added to the cable during signal transmission due to their rigid structure, and they do not effectively isolate the ferrule from the fiber optic cable, leading to potential damage and rotation issues.
Innovation Solution
An optical fiber connector sub-assembly featuring a ferrule holder, ferrule housing, and a spring mechanism that prevents ferrule rotation and reduces load on the ferrule, allowing axial movement and maintaining signal integrity by being rotatably fixed with respect to the outer housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a rigid pushable structure is used to allow limited movement of connector parts, then the connector can be pushed down stretches of duct, but signal degradation occurs when weight is added to the cable and connector during signal transmission
Solution Approach 1:
The connector is divided into separate functional components: a rigid outer housing for pushability, a flexible spring mechanism for load isolation, and a ferrule holder for positioning. This segmentation allows each component to perform its specific function without compromising overall performance.
Solution Approach 2:
The spring mechanism acts as an intermediary between the rigid outer housing and the ferrule, absorbing mechanical loads and preventing them from being transmitted to the optical fiber during signal transmission, thus eliminating signal degradation.
2Stability of the object's composition
If a rigid structure is used to maintain connector shape and position, then structural stability is achieved, but the ferrule cannot be mechanically isolated from the fiber optic cable
Solution Approach 1:
The connector structure is segmented into a stable outer housing and a独立的 ferrule holder assembly that can move independently. This allows the outer structure to remain stable while the inner ferrule assembly is mechanically isolated through the spring mechanism.
3Ease of manufacture
If the ferrule is directly connected to the cable housing, then manufacturing is simplified, but the ferrule can rotate relative to the cable
Solution Approach 1:
The spring mechanism serves as an intermediary connection between the ferrule holder and the outer housing, providing both mechanical support and rotational constraint. This intermediary element prevents ferrule rotation while maintaining a relatively simple manufacturing process.
4Length of moving object
If the connector length is reduced to fit inside protective conduit, then space constraints are satisfied, but the load on the ferrule increases when force is applied to the cable
Solution Approach 1:
The spring mechanism acts as a load-absorbing intermediary that protects the ferrule from forces applied to the cable, allowing the connector to be shortened for conduit installation without increasing ferrule load.
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 enhances signal transmission by mechanically isolating the ferrule from the fiber optic cable, reducing signal degradation under load conditions and preventing ferrule rotation, thus improving the connector's performance and durability.
Implementation Method 1
a spring having a first end configured to be press fit onto a radially outer surface of the ferrule holder and a second end configured to be press fit into a radially inner surface of the ferrule housing
Implementation Method 2
The spring is configured to reduce a load on the ferrule when a load is applied to the fiber optic cable so as to prevent degradation of a signal being transmitted by the fiber
Data Source
AI summary
An optical fiber connector sub-assembly a ferrule holder configured to hold a ferrule at a front portion of an optical fiber connector, a ferrule housing configured to slidingly receive the ferrule holder and configured to be coupled to an end of a fiber optic cable that includes an optical fiber, and a spring configured to be nonrotatably coupled with the ferrule holder and the ferrule housing. The spring is configured to prevent the ferrule from rotating relative to the end of the fiber optic cable while permitting the ferrule holder to slide axially relative to the ferrule housing, and the spring is configured to reduce a load on the ferrule when a load is applied to the fiber optic cable so as to prevent degradation of a signal being transmitted by the fiber.