Transparent End-Plate Sealing for Hollow-Core Fiber Connectors
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Solution Overview
Problem
Hollow-core optical fibers are vulnerable to contaminants that can ingress into their hollow cores, leading to degraded performance and interference, which impedes their use in telecommunications systems.
Innovation Solution
A connector system for hollow-core optical fibers is provided, featuring a ferrule with a bore to receive the fiber and an optically transparent end plate that is laser-welded to the fiber's end face to seal the interior from debris ingress, with a bonding agent securing the fiber within the ferrule.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If hollow-core optical fiber is used to achieve faster light propagation speed and reduced latency, then transmission speed is improved, but vulnerability to contaminant ingress increases
Solution Approach 1:
The patent applies preliminary action by sealing the hollow-core optical fiber interior with an end plate before the fiber is exposed to the ambient environment during connectorization. This preventive measure blocks contaminant ingress pathways at the fiber end face, ensuring the hollow core remains protected throughout deployment and operation, thereby maintaining the speed advantage while eliminating contamination vulnerability
Solution Approach 2:
The end plate serves as an intermediary element between the hollow-core optical fiber interior and the external environment. This mediator physically separates the clean internal space from potential contaminants in the ambient environment, allowing the fiber to maintain its performance benefits while being protected from harmful factors through the intermediate barrier
2Ease of operation
If the hollow-core optical fiber interior is left open for connectorization, then ease of connection is improved, but risk of debris ingress increases
Solution Approach 1:
The end plate is installed during the connectorization process itself, performing the sealing action at the same time as the connection is made. This preliminary sealing ensures that once the connector is assembled, the hollow core is immediately protected, combining the ease of standard connectorization procedures with reliable contamination prevention
Solution Approach 2:
The patent extracts the sealing function from the fiber structure itself and implements it as a separate end plate component. This allows the fiber to maintain its open-end configuration for easy connectorization while the extracted sealing element provides the necessary protection, separating the connection function from the protection function
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system effectively protects hollow-core optical fibers from contaminants, maintaining transmission performance and reducing the risk of interference, enabling their use in various applications without exposure to environmental degradation.
Implementation Method 1
an optically transparent end plate that is laser-welded to the fiber's end face to seal the interior from debris ingress
Implementation Method 2
The end plate is also coupled to the ferrule to complete assembly of the connector. It will be understood that the end plate is optically transparent to transmit light energy to or from the hollow-core optical fiber
Data Source
AI summary
A connector for use in a cable assembly is provided, specifically for cable assemblies including one or more hollow-core optical fibers. The connector includes a ferrule with bore(s) that receive the hollow-core optical fiber(s) and an end plate connected to end faces of the hollow-core optical fibers. The end plate is optically transparent for transmitting optical signals or light energy to and from the hollow-core optical fibers, and the end plate blocks and seals the hollow-core optical fibers at openings in the end faces to stop ingress of debris or other contaminants that can degrade or attenuate signal transmission through the interior of the fibers. Thus, cable assemblies using one or more hollow-core optical fibers are available and sufficiently robust and durable for use in further types of optical fiber systems.


