Hardened Optical Tap Terminals for Outdoor Fiber Distribution
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Solution Overview
Problem
There is a need to incorporate hardened technology into distributed tap architectures to enhance durability and ease of installation in outdoor environments, particularly for fiber-to-the-home deployments in regions with low to medium subscriber density.
Innovation Solution
The implementation of environmentally sealed enclosures with hardened de-mateable fiber optic connection locations, gel-sealed cable ports, and brackets for mounting, along with daisy-chained optical tap terminals, to create a robust and efficient fiber distribution architecture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hardened technology is incorporated into distributed tap architectures, then durability and reliability are improved, but device complexity increases
Solution Approach 1:
The optical network is divided into distributed tap units that can be independently deployed at different locations along the fiber line. Each tap terminal is a self-contained module with sealed enclosure, allowing the system to achieve overall durability through modular reliability without requiring complete system redesign
Solution Approach 2:
The enclosures are pre-sealed and hardened connection locations are pre-configured during manufacturing. This preliminary preparation ensures durability is built-in from the start, eliminating the need for complex field assembly procedures that would increase device complexity
2Object-affected harmful factors
If environmentally sealed enclosures with hardened connections are used, then protection against outdoor conditions is improved, but ease of manufacture deteriorates
Solution Approach 1:
The enclosure design uses standardized seal ratings and environmental protection parameters that can be adjusted based on specific deployment requirements. This allows manufacturers to produce variants for different outdoor conditions without completely redesigning the manufacturing process
Solution Approach 2:
The sealed enclosure design serves multiple functions: environmental protection, mechanical strength, and standardized mounting interfaces. This multi-functionality reduces the need for separate manufacturing processes for each function, improving ease of manufacture while maintaining protection
3Reliability
If gel-sealed cable ports and hardened connection locations are implemented, then reliability in outdoor environments is improved, but device complexity increases
Solution Approach 1:
The gel sealant is contained within the enclosure structure, with cable ports passing through the sealed boundary. This nested arrangement provides reliable environmental sealing without requiring the gel to be externally applied or managed, reducing operational complexity while maintaining reliability
Data Source
AI summary
Distributed optical tapping architectures include two or more optical tap terminals daisy-chained together. Each optical tap terminal includes an environmentally sealed enclosure; an optical tapping circuit positioned within an interior of the enclosure, the optical tapping circuit including an tap input, a tap pass-through output, and a tap drop output; and hardened interface locations (e.g., de-mateable fiber optic connection locations, cable-pass through glands, etc.) corresponding to the tap input, the tap pass-through output and the tap drop output.