Loose Optical Fiber Subunits for High-Density Cable Packing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing optical fiber cables face challenges in achieving high fiber density within a reduced diameter jacket, as conventional ribbons require free space for fiber movement, leading to inefficiencies in packaging and handling.
Innovation Solution
The use of reconfigurable subunits with thin film subunit binders allows for tightly packed optical fibers, enabling higher fiber density and reduced diameter cables by allowing the subunits to conform to various shapes within the cable core, utilizing more free space efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional ribbons are used in high-density cables, then fiber density can be achieved, but free space is required for fiber movement during bending and twisting, increasing cable diameter
Solution Approach 1:
The cable core is divided into multiple subunits, each containing a specific number of optical fibers (e.g., 720 fibers per subunit). These subunits are independently bound and arranged within the cable jacket, allowing each segment to be optimized for packaging efficiency while maintaining overall cable flexibility and reducing total diameter.
Solution Approach 2:
The subunits are designed with flexible binding structures that allow dynamic reconfiguration during cable installation and operation. The subunits can bend, twist, and adapt their shape to accommodate external forces while maintaining fiber integrity, eliminating the need for excessive free space within the cable diameter.
2Quantity of substance
If more fibers are packed into the cable, then fiber density increases, but handling and installation become more difficult
Solution Approach 1:
By dividing the total fiber count into manageable subunits (e.g., 720 fibers each), the cable becomes easier to handle during installation. Each subunit can be independently manipulated, positioned, and connected, reducing the complexity of working with high-density cable configurations.
Solution Approach 2:
The subunits utilize thin film binders with optimized thickness parameters that provide sufficient structural support for high-density fiber packaging while maintaining flexibility for ease of handling. The binder thickness is carefully controlled to balance protection requirements with maneuverability during installation.
3Volume of moving object
If the cable diameter is reduced, then packaging efficiency improves, but the cable becomes more susceptible to damage during installation
Solution Approach 1:
Thin film binders are used to enclose and protect the optical fibers within each subunit. These flexible films provide necessary protection and structural integrity while allowing the subunits to be tightly packed within the cable jacket, maintaining both durability and compact diameter.
Solution Approach 2:
The cable employs composite structural elements combining thin film binders, flexible jackets, and optimized fiber arrangements. This composite approach allows the cable to achieve reduced diameter for better packaging efficiency while maintaining sufficient mechanical strength and protection for reliable installation.
4Quantity of substance
If subunit binders are made thinner, then fiber density increases, but the binders become more vulnerable to damage
Solution Approach 1:
The binder thickness is optimized to a specific parameter range that provides sufficient protection for the fibers while allowing tight packaging for high density. This parameter optimization balances the conflicting requirements of binder strength and fiber density achievement.
Solution Approach 2:
The subunit binders utilize composite material structures that combine multiple properties - sufficient thickness for protection, appropriate material composition for strength, and flexibility for packaging efficiency. This composite approach allows thin but resilient binders that protect fibers while enabling high-density cable construction.
Data Source
AI summary
Provided are embodiments of an optical fiber cable. The optical fiber cable includes a plurality of optical fibers, a plurality of subunits, each subunit having a subunit binder surrounding the plurality of optical fibers, and a cable jacket surrounding the plurality of subunits. The subunit binders of the subunits loosely contain their respective optical fibers.