What Is Mechanical Splice?_
A mechanical splice uses an alignment fixture and index-matching gel to join two optical fibers, providing a low-loss connection that is quicker and less expensive than fusion splicing. It is typically used for temporary repairs or in environments where fusion splicing equipment is impractical. The splice is held in place by a mechanical clamp or adhesive, and its performance depends on precise fiber alignment and cleanliness.
Technical Details
Mechanical splices achieve typical insertion loss below 0.5 dB when properly executed, though exact values depend on fiber type and splice quality. The splice housing often includes a V-groove or capillary tube to align the fibers, and index-matching gel reduces Fresnel reflections. Unlike fusion splicing, mechanical splices are not hermetic and may degrade over time if exposed to moisture or contaminants. They are rated for a limited number of re-entries, per the manufacturer's specification.
How Leviathan Systems Works with Mechanical Splice
On field deployments, mechanical splices are occasionally used for emergency fiber repairs in GPU networking cables (e.g., MPO trunk lines) when fusion splicing equipment is not available on site. They are not standard for new builds but serve as a field expedient to restore connectivity quickly.
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