SC UPC Bare Fiber Adapter – Quick-Connect Solution for Fiber Testing
The SC UPC Bare Fiber Adapter is a specialized temporary connection device designed for field testing, network maintenance, laboratory verification, and production inspection. It allows stripped and cleaved bare optical fibers to be connected directly to SC-based testing interfaces-without fusion splicing, connector polishing, or assembling a permanent fiber connector.
The adapter features a blue SC/UPC connector on one side for connecting to standard SC adapters, patch cords, optical power meters, light sources, OTDR ports, and other compatible test equipment, with a mechanical clamp on the other end to securely hold the bare fiber in place.
Key Features
Quick Temporary Connection
Connect bare fibers directly to SC test interfaces after stripping and cleaving
Eliminates the time-consuming process of splicing jumpers onto individual fibers for testing
Ideal for quick field checks and emergency fiber repairs
No Fusion Splicing Required
Engineers can connect bare fiber without using a fusion splicer, mechanical splice, or connector polishing process
Saves significant time during installation and maintenance work
Stable Clamping Structure
Mechanical clamp with metal tightening knob secures the bare fiber
Reduces fiber movement during measurement for more stable test results
Supports bare fibers with 125μm cladding diameter (250μm / 900μm coating options available)
Low Insertion Loss
Typical insertion loss: ≤0.2dB (depends on fiber cleave quality)
Return loss: ≥55dB for singlemode applications
Durable and Reusable
Epoxy-free ferrule and fiber through-hole design-no adhesive residue
Supports over 1,000 mating cycles with stable performance
Easy to clean if fiber breaks off during use
Portable and Field-Ready
Small, lightweight design-fits easily in any field toolkit
No power required for operation
Available with SC, LC, FC, ST, and SMA connector options
Specifications
| Parameter | Specification |
|---|---|
| Connector Type | SC |
| Polish Type | UPC (Ultra Physical Contact) |
| Connector Color | Blue (standard for SC/UPC) |
| Bare Fiber End | Black mechanical clamp with metal tightening knob |
| Compatible Fiber Cladding Diameter | 125μm ~ 127μm |
| Coating Compatibility | 250μm / 900μm (confirm before ordering) |
| Insertion Loss | ≤0.2dB (typical) |
| Return Loss | ≥55dB |
| Repeatability | ≤0.1dB |
| Variability | ≤0.2dB |
| Durability | >1,000 mating cycles |
| Operating Temperature | -40°C to +80°C |
| Storage Temperature | -55°C to +85°C |
| Humidity | 95% RH |
| Application | Temporary testing connection (not for permanent network installation) |
Applications
| Application Area | Description |
|---|---|
| Fiber Optic Field Installation | Quick testing during cable construction and acceptance |
| Network Maintenance & Troubleshooting | OTDR link diagnostics and fault location |
| FTTH / FTTx Deployment | On-site fiber verification before permanent termination |
| Data Center Cabling | Fiber testing in high-density environments |
| Laboratory Experiments | Optical fiber research and component testing |
| Production Line Inspection | Quality control testing for patch cords and components |
| Optical Power Measurement | Temporary connection to power meters and light sources |
| Emergency Repairs | Temporary fiber restoration and interim connections |
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