Flexible Optical Fiber Cable for Compact Chip-to-Chip Interconnection
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Solution Overview
Problem
Conventional optical cables with large cross-sections and limited bend flexibility are unsuitable for compact chip-to-chip interconnection applications due to their high weight and inflexibility, which can lead to kinking, buckling, or breaking when bent, damaging the optical fibers.
Innovation Solution
A fiber-optic cable with a laterally flexible or stretchable sheath that allows significant changes in cross-sectional shape when bent, enabling tighter turns without damaging the optical fibers, and a raceway with a curved portion that accommodates the expanded cross-sectional size of the cable.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If conventional optical cables are used with large cross-sections, then structural stability is improved, but bend flexibility deteriorates and weight increases
Solution Approach 1:
The cable is segmented into multiple independent optical fiber bundles, each surrounded by its own protective sheath. This segmentation allows each bundle to bend independently while maintaining overall cable stability, resolving the contradiction between structural stability and bend flexibility.
Solution Approach 2:
A flexible outer sheath material is used to encase the optical fiber bundles. This flexible shell allows the cable to bend and change cross-sectional shape without damaging the internal fibers, while still providing structural protection and stability.
2Adaptability or versatility
If conventional optical cables are bent tightly, then adaptability to compact spaces is improved, but the optical fibers may kink, buckle, or break
Solution Approach 1:
The flexible outer sheath acts as a protective membrane that allows tight bending of the cable while preventing the optical fibers inside from kinking or breaking. The sheath deforms with the bend, distributing stress uniformly and protecting fiber integrity.
Solution Approach 2:
The cable design incorporates sufficient sheath thickness and appropriate material selection to provide beforehand cushioning protection. This pre-engineered protection ensures that even when bent tightly in compact spaces, the optical fibers are cushioned against mechanical damage.
3Manufacturing precision
If the cable cross-sectional shape is kept fixed, then manufacturing precision is improved, but the cable cannot accommodate bends without damage
Solution Approach 1:
The cable cross-sectional shape is designed to be dynamic rather than fixed. The flexible sheath allows the cross-section to change shape and size in response to bending, while the manufacturing process ensures consistent initial geometry. This dynamic adaptability resolves the contradiction between manufacturing precision and bend capability.
Solution Approach 2:
The cable design allows parameters such as cross-sectional shape, area, and orientation to change in response to bending forces. The sheath material and internal structure are engineered to permit these parameter changes while maintaining fiber protection, thus resolving the contradiction between fixed manufacturing precision and flexible operation.
Data Source
AI summary
Provided are (i) a fiber-optic cable having a cable sheath that enables significant changes in the cable's cross-sectional shape when the cable is bent and (ii) a raceway that can be used to deploy such a fiber-optic cable.