FC Square Bare Fiber Adapter Overview

The FC Square Bare Fiber Adapter is a reusable fiber testing accessory designed to provide a temporary connection between bare optical fiber and an FC test interface.

It allows technicians to connect prepared bare fiber to an OTDR, optical power meter, optical light source, or other compatible test instrument without installing a permanent fiber connector. The epoxy-free insertion structure makes the fiber easy to insert, remove, and test repeatedly.

The square flange design is suitable for test equipment, laboratory fixtures, production test platforms, and panel-mounted applications. Multiple insertion hole diameters are available to accommodate different fiber and coating dimensions.

Key Features

• Temporary bare fiber to FC connection
• Square flange mounting structure
• Selectable insertion hole diameter
• Low insertion loss ≤0.2dB
• Epoxy-free fiber insertion
• No permanent connector termination required
• Replaceable connector and plug modules
• High-precision mechanical construction
• More than 10,000 operating cycles
• Suitable for repeated production and laboratory testing

Applications

• OTDR testing
• Optical power measurement
• Optical light source testing
• Fiber continuity testing
• Bare fiber loss measurement
• Laboratory optical experiments
• Fiber production inspection
• Telecom maintenance
• Equipment test panels
• Temporary fiber connection

How to Use

1. Select the correct insertion hole diameter.
2. Strip the fiber coating to the required length.
3. Clean the bare fiber with suitable fiber-cleaning materials.
4. Cleave the fiber to produce a clean, flat end face.
5. Insert the prepared fiber gently into the adapter.
6. Connect the FC side to compatible optical test equipment.
7. Remove the fiber after testing and keep the adapter protected from dust.

A clean and properly cleaved fiber end is important for stable test results. This adapter is intended for temporary testing rather than permanent fiber termination.

Insertion Hole Size Selection