Fiber Optic Adapter Alignment Sleeve Assembly with Rotational Adjustment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing fiber optic adapters face issues with alignment errors due to machining errors in alignment sleeves, leading to increased connection loss and variability, as the sleeves can randomly rotate, making it difficult to maintain minimal insertion loss in optical fiber interconnections.
Innovation Solution
An adjustment element is integrated into the fiber optic adapter to fix the alignment sleeve at a predetermined circumferential angle, minimizing alignment errors and ensuring consistent low insertion loss by allowing controlled rotation of the sleeve within a specific range relative to the mating retainer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the alignment sleeve is allowed to rotate freely in the mating retainer, then the device complexity is reduced and ease of manufacture is improved, but the alignment precision deteriorates and insertion loss increases due to random circumferential positioning
Solution Approach 1:
The alignment sleeve is pre-adjusted to a predetermined circumferential angle during assembly where insertion loss is minimized. The adjustment element allows rotational adjustment before final locking, enabling the sleeve to be positioned at the optimal angle (where machining errors cause minimal alignment error) before being fixed in place. This preliminary positioning action resolves the contradiction by achieving precise alignment without requiring complex precision machining of all components.
2Manufacturing precision
If the alignment sleeve is fixed at a predetermined circumferential angle using an adjustment element, then the alignment precision is improved and insertion loss is minimized, but the device complexity increases
Solution Approach 1:
The adjustment element introduces a dynamic adjustment capability that allows the alignment sleeve to be rotated to the optimal circumferential angle during assembly. Once positioned, the locking mechanism fixes the sleeve in place. This dynamic adjustment feature resolves the contradiction by adding only minimal complexity (a simple rotational locking mechanism) to achieve significant improvements in alignment precision and minimize insertion loss.
3Reliability
If the alignment sleeve is positioned at a particular circumferential angle to minimize connection loss, then the insertion loss is reduced, but the reliability deteriorates because each individual sleeve has a different optimal angle that is difficult to identify and reproduce
Solution Approach 1:
The adjustment element enables the alignment sleeve to self-adjust to its optimal circumferential angle during assembly. By allowing rotational movement and locking at the position of minimal insertion loss, the system automatically finds the best positioning for each individual sleeve without requiring external measurement or complex positioning mechanisms. This self-service approach resolves the contradiction by achieving reliable low insertion loss through simple operational adjustment rather than complex predetermined positioning.
Data Source
AI summary
A fiber optic adapter, including: a mating retainer; an alignment sleeve received in the mating retainer, a ferrule of a fiber optic connector being adapted to be inserted into the alignment sleeve through an insertion port of the fiber optic adapter; and an adjustment element configured to adjust a circumferential angle of the alignment sleeve relative to the mating retainer to a predetermined circumferential angle and hold the alignment sleeve at the predetermined circumferential angle relative to the mating retainer. The adjustment element may adjust the circumferential angle of the alignment sleeve with respect to the mating retainer to the predetermined circumferential angle, for example, at which the fiber insertion loss of the coupled connectors is minimal, and hold the alignment sleeve at the predetermined circumferential angle. In this way, it may improve the alignment accuracy of the coupled connectors.