LC/UPC Round Bare Fiber Adapter

LC/UPC Round Bare Fiber Adapter

The LC/UPC Round Bare Fiber Adapter is a compact and high-precision optical interface designed for quick, stable, and repeatable connections between an LC/UPC connector and a bare optical fiber. It allows stripped fibers to be connected directly—without epoxy, splicing, or polishing—making it ideal for optical testing, temporary fiber connections, and alignment applications.

Built with a nickel-plated round metal housing and a high-precision zirconia ceramic alignment sleeve, this adapter ensures accurate fiber core alignment, low insertion loss, and excellent repeatability. The UPC (Ultra Physical Contact) interface delivers high return loss and consistent optical performance, while the round body design offers easy handling and strong mechanical stability during laboratory or field use.

Specifications

Key Features

✅ Compatible with standard LC/UPC connectors and bare optical fibers.
✅ Enables fast and tool-free temporary fiber connections.
✅ Zirconia ceramic alignment sleeve ensures low insertion loss and high repeatability.
✅ Nickel-plated round metal housing for durability and stability.
✅ Ideal for optical testing, R&D, inspection, and temporary 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)