Hybrid Communication Cable Layout for PoE and Optical Bandwidth
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Solution Overview
Problem
Existing copper-based communication cables face challenges in achieving high bandwidth and power transmission efficiently, especially beyond 10Gbps speed and 100m distance, which is required for future high-speed data rates in commercial building local area networks.
Innovation Solution
A hybrid cable design that incorporates an inner core with twisted pairs of conductors and optical fibers, featuring a separator structure that minimizes crosstalk and protects the optical fibers from stress, while maintaining compatibility with copper twisted pair systems and Power over Ethernet (PoE).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If copper infrastructure is used for data transmission, then compatibility with existing PoE systems and ease of operation is maintained, but bandwidth is limited to 10Gbps and transmission distance is confined to 100m
Solution Approach 1:
The patent combines copper twisted pairs and optical fibers into a single hybrid cable structure. The copper pairs maintain PoE compatibility and power transmission capabilities, while the optical fibers provide high-bandwidth data transmission channels, resolving the contradiction between ease of operation and bandwidth productivity.
Solution Approach 2:
The hybrid cable serves multiple functions simultaneously: copper pairs handle power transmission and lower-speed data, while optical fibers handle high-speed data transmission. This multi-functionality allows the single cable to satisfy both PoE compatibility requirements and high-bandwidth demands.
2Productivity
If optical fiber is used for data transmission, then bandwidth and transmission distance are significantly improved, but compatibility with existing copper-based PoE systems is lost
Solution Approach 1:
The patent merges optical fiber and copper twisted pairs within the same cable structure, allowing optical fibers to provide high bandwidth while copper pairs maintain compatibility with existing PoE infrastructure and devices.
Solution Approach 2:
The cable is segmented into distinct functional zones: optical fiber cores for high-bandwidth data transmission and copper twisted pairs for PoE-compatible connections. This segmentation allows each material to optimize its strengths while working together in a unified system.
3Productivity
If a hybrid structure with both copper and optical fibers is implemented, then both PoE compatibility and high bandwidth are achieved, but cable structure complexity increases
Solution Approach 1:
The hybrid cable is divided into distinct segments: copper twisted pairs in outer positions for PoE compatibility and optical fibers in central positions for high bandwidth. This clear segmentation simplifies the overall structure compared to a fully integrated design, making installation and maintenance more manageable.
4Ease of operation
If copper cables are used for power transmission via PoE, then power delivery to end devices is enabled, but power transmission efficiency decreases compared to Class 4 Power systems
Solution Approach 1:
The hybrid cable combines copper pairs for power delivery with optical fibers for data transmission. This allows the system to maintain PoE compatibility for power delivery while using the more efficient optical channel for data, reducing overall energy loss compared to using copper for both purposes.
Data Source
AI summary
A hybrid cable designed for providing data communications via both optical fiber and copper wires is provided. The hybrid cable includes internal features for designing a location of the optical fiber and the copper wires relative to each other to optimize cabling characteristics of the hybrid cable.