Optical Transmission Element High-Density Fiber Packing
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Solution Overview
Problem
Standard optical transmission elements in fiber optic cables face limitations in flexibility and bend performance, leading to high time delays in parallel data transmission, especially in indoor applications where cables need to navigate corners, and accessing individual fibers is difficult due to the stiffness of the polymeric tubes.
Innovation Solution
An optical transmission element with a high-density packing of optical fibers, where each fiber is in contact with at least two others and surrounded by a sheath layer, minimizing microbending effects and allowing for low time delays by ensuring all fibers are in contact with the sheath layer, which is extruded using a specific nozzle configuration to achieve optimal packing and flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a polymeric tube is used to surround optical fibers, then the tube provides structural protection and fiber containment, but the tube becomes stiff and limits bend performance
Solution Approach 1:
The patent divides the protective structure into two functional parts: individual fiber coatings that provide flexibility and a outer polymeric tube that provides structural protection. This segmentation allows each component to optimize its function independently, resolving the contradiction between protection and bendability.
Solution Approach 2:
The patent applies flexible coating layers around each optical fiber, creating a flexible shell structure that allows the fiber bundle to bend without damaging the fibers or compromising the protective function of the outer tube.
2Strength
If a polymeric tube is used to surround optical fibers, then the tube provides structural protection, but the strength of the material prevents easy access to individual optical fibers
Solution Approach 1:
The patent segments the fiber bundle into individually coated fibers within the tube, allowing selective access to specific fibers without compromising the overall structural integrity of the tube. The individual coatings enable fibers to be accessed and manipulated separately.
Solution Approach 2:
The patent enables extraction of individual fibers from the bundle through the flexible coating structure, allowing operators to remove specific fibers for splicing or connection without needing to cut or damage the protective tube.
3Loss of time
If optical fibers are arranged with high density packing, then time delay between parallel signals is minimized, but the structure becomes more complex
Solution Approach 1:
The patent merges multiple optical fibers into a compact bundle with high-density packing, where the fibers are arranged in close proximity to minimize the length differences and corresponding time delays between parallel signal transmission paths.
Solution Approach 2:
The flexible coatings on each fiber enable tight packing while maintaining individual fiber flexibility, allowing the complex high-density arrangement to be achieved without compromising the simplicity of individual fiber handling.
4Loss of time
If fiber optic ribbons are used for high-speed data transmission, then low time delay is achieved, but bend performance is limited
Solution Approach 1:
The patent segments the rigid ribbon structure into individual flexible fibers with coatings, allowing the bundle to bend while maintaining the close spacing needed for low time delay. The individual fiber coatings prevent damage during bending operations.
Solution Approach 2:
The patent changes the physical state of the fiber bundle from a rigid ribbon to a flexible coated fiber arrangement, enabling bend performance while maintaining the high-density packing that provides low time delay characteristics.
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 achieves a low time delay of less than 2.5 ps/m between optical signals, enhancing flexibility and ease of access to individual fibers without the need for tools, making it suitable for high-speed data transmission in data centers and indoor installations.
Implementation Method 1
the sheath layer is extruded in contact with the optical fibers being arranged in the core section of the optical transmission element next to the inner surface of the sheath layer
Data Source
AI summary
An optical transmission element comprises a core section including a plurality of optical fibers where each one of the optical fibers is in contact with at least two other optical fibers. The optical transmission element also has a sheath section including a sheath layer surrounding the core section such that the sheath layer is in contact with the optical fibers.