Dual-Diameter Fiber Jacketing for Optoelectronic Module Alignment
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Solution Overview
Problem
Optical fibers in fiber-coupled optoelectronic modules are prone to physical damage due to their fragile nature, particularly when bent too tightly, which can lead to breakage.
Innovation Solution
A dual-jacketed protection sleeve is implemented, comprising an inner and outer jacket, with a reducer adaptor, to limit bending and provide reinforcement, allowing for slidable and rotatable attachment of the inner jacket, thereby preventing kinking and flexing of the optical fibers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If optical fiber is made thin and flexible for easy handling, then ease of operation is improved, but reliability deteriorates due to increased susceptibility to bending damage
Solution Approach 1:
The optical fiber is nested within multiple protective layers including an inner buffer tube, outer buffer tube, and reinforcement elements. Each layer provides additional protection while maintaining the fiber's flexibility and ease of handling.
Solution Approach 2:
The protective structure combines multiple materials with different properties - the inner buffer tube provides immediate protection, the outer buffer tube adds structural support, and reinforcement elements enhance bending resistance. This composite structure achieves both flexibility and durability.
2Reliability
If rigid armor jacketing is applied to protect optical fiber, then reliability is improved, but adaptability deteriorates due to inability to rotate for polarization alignment
Solution Approach 1:
The connector assembly is designed to be rotatable relative to the optoelectronic module, allowing dynamic adjustment for polarization alignment. The flexible connection between the connector and fiber enables this rotational movement without compromising the protective armor jacketing.
Solution Approach 2:
The system is divided into separable components - the optoelectronic module, the armor-jacketed fiber, and the connector assembly. This segmentation allows the connector to rotate independently for alignment while the fiber remains protected by its rigid armor jacketing.
3Reliability
If dual-jacketed protection sleeve is implemented to prevent fiber bending, then reliability is improved, but device complexity increases
Solution Approach 1:
The minimum bending radius features are built into the armor jacketing structure during manufacturing, providing preliminary protection against excessive bending. This eliminates the need for additional complex protective mechanisms while ensuring fiber safety.
Solution Approach 2:
The inner and outer buffer tubes are designed as flexible protective shells that conform to the fiber's natural curvature. These thin-walled structures provide protection without adding significant complexity, allowing the fiber to bend within safe limits while preventing damage.
Data Source
AI summary
A dual-diameter armor jacketing assembly method for protecting the fiber optic cable of an optoelectronic module is demonstrated. This method allows for rigid attachment of the armor jacketing to both the optoelectronic module housing and the fiber connector and also for rotation of the fiber connector for polarization maintaining fiber assemblies.