FC/APC Square Bare Fiber Adapter

FC/APC Square Bare Fiber Adapter

The FC/APC Square Bare Fiber Adapter is a precision optical device designed to provide quick, stable, and low-reflection connections between a standard FC/APC connector and a bare optical fiber. It enables users to easily connect unjacketed fibers for temporary testing, optical power measurements, or alignment purposes without the need for permanent splicing or polishing.

Built with a nickel-plated square metal housing and a high-precision zirconia ceramic alignment sleeve, this adapter guarantees accurate core alignment, low insertion loss, and ultra-low back reflection — ideal for APC (Angled Physical Contact) connections. The square body design offers better grip and mechanical stability, ensuring reliable operation in laboratory, manufacturing, and field testing environments.

Specifications

Key Features

✅ Compatible with standard FC/APC connectors and bare optical fibers.
✅ Angled Physical Contact (APC) interface minimizes return loss and reflection.
✅ Precision zirconia ceramic sleeve ensures accurate fiber alignment.
✅ Durable square metal housing for firm handling and easy setup.
✅ Ideal for optical testing, calibration, alignment, and temporary fiber terminations.

Bare Fiber Adapter User Guide

Step 1: Prepare Materials

Step 2: Strip 15-20mm of the optical fiber coating

Step 3: Wipe the bare fiber clean with industrial alcohol

Step 4: Press down the switch of the bare fiber adapter
(press down the clamp plate for square bare fiber adapters and press down the round button for round bare fiber adapters)

Step 5: Slowly push the bare fiber into the guide hole

Step 6: Use a pen-type fiber optic cutter to cut the excess bare fiber that exposes the ceramic end face.
(The operation is completed by cutting the bare fiber. After use, pull out the fiber and it can be reused)