Field-Installable Optical Splice With Seamless Housing
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Solution Overview
Problem
Existing optical fiber splices lack precise fiber alignment, durability, and versatility in field installation, as they are often susceptible to dirt and debris, and fail to transfer axial forces effectively, while also not being compatible with standard tools and accessories.
Innovation Solution
A seamless, robust housing with an axially actuated clamping mechanism that uses commercialized field-installable connector technology, allowing for secure fiber alignment and load transfer to the housing, while being compatible with standard tools and accessories.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a fused splice is used to achieve precise fiber alignment, then optical coupling performance is improved, but field installability deteriorates due to specialized equipment requirements
Solution Approach 1:
The patent replaces the optical alignment mechanism (fused splice requiring specialized equipment) with a mechanical alignment system using precision-machined V-grooves and registration features that provide inherent mechanical alignment of fibers, enabling field installation with simple tools while maintaining precise alignment
2Ease of operation
If a clam-shell splice design is used to achieve simple field installation, then ease of operation is improved, but durability deteriorates due to seams and susceptibility to dirt
Solution Approach 1:
The housing is divided into a body and a removable cap section. The body contains all critical components (V-grooves, clamping mechanism, fiber alignment features) in a sealed configuration. The cap provides access during installation but can be permanently secured or sealed after installation, maintaining durability while enabling field installation
3Device complexity
If axial forces are transmitted through the optical splice, then structural robustness deteriorates, but simplicity is improved
Solution Approach 1:
The patent extracts the load-bearing function from the optical alignment function. A separate load-bearing member (distinct from the alignment housing) is provided to carry axial forces. This separates the mechanical strength requirements from the optical alignment requirements, allowing each to be optimized independently
4Manufacturing precision
If a unique clamping mechanism is used to achieve adequate optical alignment, then manufacturing precision is improved, but adaptability deteriorates due to non-standard tooling requirements
Solution Approach 1:
The clamping mechanism is designed to be actuated by standard field installation tools through universal interfaces (such as standard crimping tools or compression tools). The V-groove geometry and registration features provide precise alignment, while the actuation mechanism accepts common tool types, making the splice adaptable to standard field installation practices
Data Source
AI summary
A splice for connecting two segments of optical fiber cable, the splice comprising: (a) an elongated housing having a first end with a first opening, a second end with a second opening, and a central cavity, the housing being essentially seamless between the first and second ends; (b) a clamping mechanism disposed in the central cavity and comprising at least a platform defining a fiber-receiving channel open to both first and second openings, a first member adjacent to the fiber-receiving channel and having at least one cam surface, and a second member having a second cam surface, the first and second cam surfaces cooperating such that relative movement of the first and second members toward the first end causes the first member to move toward the fiber-receiving channel and an actuator to cause relative movement of the first and second members toward the first end; (c) a first buffer crimp disposed at the first opening; and (d) a second buffer crimp disposed at the second opening.