Optical Module Package Elastic Support Design
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Solution Overview
Problem
Conventional optical module packages experience issues with fiber unit transformation, breakage, and increased insertion loss due to elastic members expanding and shrinking with temperature-humidity cycles, which also amplify vibration and shock effects on the fiber unit.
Innovation Solution
An optical module package design featuring a housing with a first case and a second case, where the first case has a bottom convex-part and elastic support parts that support the optical waveguide device, while keeping the optical fiber at a distant position, and the second case has peak convex-parts and elastic cover parts that contact the optical waveguide device, reducing the volume of elastic members and their expansion/shrinkage impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If elastic members are accommodated in the housing to reduce vibration and shock, then the fiber unit is protected from mechanical impacts, but the elastic members expand and shrink with temperature-humidity cycles, causing load on the fiber unit leading to transformation, breakage, and increased insertion loss
Solution Approach 1:
The housing is divided into a first case and a second case, with the elastic support part and elastic cover part forming separate protective zones. This segmentation allows the elastic members to be confined to specific regions, reducing their overall expansion/shrinkage impact on the fiber unit while maintaining vibration and shock protection.
Solution Approach 2:
The elastic support part and elastic cover part are positioned at opposite ends of the fiber unit, creating localized protection zones. This local quality approach ensures that the elastic members' harmful effects are contained to specific areas rather than affecting the entire fiber unit, thereby reducing transformation and breakage risks.
2Strength
If elastic members are used to cushion the fiber unit, then mechanical protection is improved, but the volume of elastic members causes significant expansion and shrinkage during temperature-humidity cycles, increasing load on the fiber unit
Solution Approach 1:
The protective elastic members are divided into multiple smaller components (elastic support part and elastic cover part) positioned at different locations. This segmentation reduces the total volume of elastic material needed while maintaining adequate mechanical protection through distributed support points.
Solution Approach 2:
Elastic members are placed only at critical locations (support part at one end, cover part at the other end) rather than throughout the entire housing. This local quality approach minimizes the total volume of elastic material while providing protection where most needed, thereby reducing overall expansion/shrinkage effects.
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
This design effectively decreases vibration and shock, and the load caused by temperature-humidity cycles, thereby reducing transformation, breakage, and insertion loss of the fiber unit by minimizing the volume of elastic members and their expansion/shrinkage effects.
Implementation Method 1
an elastic support part made of elastic member and covering the bottom convex-part, the optical waveguide device is supported by the elastic support part
Implementation Method 2
The elastic members which are accommodated in the housings repeat expansions and shrinkages, when the optical module packages are exposed to the change in the environment, which high-temperature, high humidity and low-temperature, low humidity
Data Source
AI summary
An optical module package has a first case, a second case and a fiber unit. The first case has a case bottom-part formed along the length direction of the fiber unit, a bottom convex-part formed on the case bottom-part so as to project toward inside direction of the first case and an elastic support part made of elastic member and covering the bottom convex-part. The optical waveguide device is supported by the elastic support part and the optical fiber is arranged at the distant position from the elastic support part.