Fiber Optic Distribution Assembly Daisy Chain Design
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Solution Overview
Problem
The existing fiber optic distribution networks face increased complexity, cost, and installation time due to the need for multiple types of fiber optic connection terminals and extensive branching arrangements, particularly in rural areas where subscriber premises are far apart, leading to excessive costs and time consumption for installing separate branch cables.
Innovation Solution
A fiber optic distribution network design that uses interchangeable fiber optic connection terminals with a standardized port mapping scheme, allowing for a daisy chain arrangement of distribution assemblies interconnected by a single type of branch cable, reducing design complexity and installation costs by enabling every individual fiber of a main distribution cable to be connected to a drop cable at different terminals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple types of fiber optic connection terminals are used in the distribution network, then the network can serve diverse subscriber premises locations, but the device complexity and installation difficulty increase significantly
Solution Approach 1:
The patent applies universality by designing a single type of fiber optic connection terminal that can perform multiple functions through different port mapping configurations. The terminal can connect to distribution cables in various arrangements (direct connection, daisy chain, star topology) by simply changing the port mapping scheme, eliminating the need for multiple specialized terminal types while maintaining network coverage capability.
Solution Approach 2:
The patent uses parameter changes by varying the port mapping configuration parameters of the same terminal type to adapt to different network topologies and subscriber premises locations. Instead of changing the physical hardware, the system changes the mapping parameters to achieve different connection patterns, thereby reducing device complexity while maintaining versatility.
2Reliability
If separate branch cables are installed from mid-span access location to each fiber optic connection terminal, then optical connectivity is maintained, but the installation time and cost increase excessively
Solution Approach 1:
The patent merges multiple branch cable connections into a single shared branch cable that connects to multiple fiber optic connection terminals through a daisy chain arrangement. Instead of installing separate cables from the mid-span access location to each terminal, the system uses one branch cable that sequentially connects to multiple terminals, thereby maintaining optical connectivity while dramatically reducing installation time and material costs.
Solution Approach 2:
The patent implements a nested structure where multiple fiber optic connection terminals are connected in series along a single branch cable, with each terminal accessing the distribution cable through the port mapping configuration. This nested daisy chain arrangement allows multiple terminals to share the same branch cable infrastructure, reducing the overall cable length and installation complexity.
3Reliability
If dedicated stub cables are provided for each fiber optic connection terminal, then optical connectivity is ensured, but the component cost and network complexity increase
Solution Approach 1:
The patent makes the branch cable universal by designing it to serve multiple fiber optic connection terminals through a daisy chain configuration. The same branch cable infrastructure can connect to any number of terminals by adjusting the port mapping schemes, eliminating the need for dedicated stub cables for each terminal and reducing overall network complexity.
Solution Approach 2:
The patent introduces dynamic adaptability through configurable port mapping schemes that allow the same physical connection infrastructure to support different network topologies and terminal configurations. The system can dynamically reconfigure the port mappings to accommodate varying numbers and locations of terminals without changing the physical cable arrangement, thereby reducing structural complexity.
Data Source
AI summary
A fiber optic distribution assembly includes a plurality of fiber optic connectors, each having a plurality of ports arranged in the same predetermined port configuration. The predetermined port configuration has a plurality of port positions. Each of a group of N first optical fibers is optically connected to a first (e.g., input) fiber optic connector at port positions 1 through N of the predetermined port configuration, to support a group of N drop connections. A plurality of M second optical fibers is connected between ports (N+1) through (M+N) of the first fiber optic connector and ports 1 through M of a second (e.g., lateral) fiber optic connector. A plurality of P third optical fibers is connected between ports (M+N+1) through (M+N+P) of the first fiber optic connector and ports 1 through P of a third (e.g., distribution) fiber optic connector.