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ST/UPC OS2 Single Mode 9/125 Fiber Loopback Cable
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Product Highlights:
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OS2 9/125 single mode ST/UPC loopback cable designed for equipment diagnostics and transceiver testing.
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Provides a stable return path for fiber testing in labs, telecom systems, and FTTx environments.
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Durable, compact, and fully tested to ensure reliable performance.
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FiberMania offers complete OEM/ODM solutions including custom design, labeling, and branding.
Table of Contents
Description
The FiberMania ST/UPC OS2 Single Mode Loopback Cable is specifically designed for equipment testing, network diagnostics, and engineering evaluations within telecom and fiber optic environments. Using 9/125 OS2 single mode fiber, this loopback unit offers low insertion loss and stable return performance, ensuring accurate feedback signals for various testing scenarios. The ST/UPC connector ensures compatibility with a wide range of single mode equipment and provides reliable physical contact for consistent optical performance.
Compact, durable, and easy to operate, this loopback cable is an essential tool for verifying transceiver functionality, troubleshooting transmission paths, and validating network behavior. Whether in field testing, laboratory environments, or FTTx deployments, it delivers high repeatability and long service life. FiberMania supports customized loopback modules to meet specific engineering or branding requirements.
Specification
| Connector Type | ST/UPC Duplex |
|---|---|
| Polish Type | UPC |
| Fiber Type | Single Mode OS2 |
| Fiber Core / Cladding | 9/125 µm |
| Loopback Configuration | Duplex |
| Function | Optical loopback testing |
| Insertion Loss | ≤ 0.2 dB |
| Reflectance / Return Loss | ≥ 50 dB |
| Durability | ≥ 500 mating cycles |
| Optical Performance | Stable, repeatable test results |
| Jacket Material | PVC |
| Jacket Characteristics | Flexible, durable |
| Installation Method | Direct insertion into ST/UPC ports |
| Alignment Mechanism | Duplex clip |
| Color | Standard (customizable) |
| Application Environment | Indoor |
| Typical Applications | Network diagnostics and validation |
| Application Scenarios | Labs, telecom, FTTX |
| Compatibility | ST/UPC single mode ports |
| Standards Compliance | OS2 single mode fiber standards |
| Quality Control | 100% functionally tested |
| OEM / ODM Support | Labeling, packaging, cable length customization |
| Handling Recommendation | Avoid sharp bends; keep connectors clean |
Features
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Designed for OS2 9/125 single mode testing applications
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Provides a stable return path for equipment loopback diagnostics
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High durability with over 500 mating cycles
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Low reflectance with minimum 20dB return performance
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Compact, lightweight, and easy to use in field or lab settings
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All units are 100% functionally tested before shipment
Application
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Fiber optic laboratory testing
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Telecom and transmission equipment diagnostics
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FTTx field testing and network verification
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Transceiver validation and port functionality testing
Q&A
Q1: What is a fiber loopback cable used for?
It provides a return signal to test port functionality, transceiver operation, and network behavior.
Q2: Is this loopback suitable for outdoor use?
This model uses a PVC jacket and is intended primarily for indoor testing environments.
Q3: Can I order different connector types?
Yes, FiberMania supports LC, SC, FC, ST, APC/UPC options through OEM customization.
Q4: What is the typical insertion loss?
All loopbacks are tested to maintain stable insertion loss and reflectance standards.
Q5: Can it be branded for my company?
Yes, custom labels, logos, and packaging are available.
Quality Qulifications and Compliance
To get the detailed certification, please go to the Compliance.
Please Note: Our products comply with all internationally recognized and industry-standard specifications. For customized or special requirement products, we carry out testing and standards in accordance with the conformity criteria specified in the contract.
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