Single-mode Fiber Optic Adapter No name AD-FC-APC/FC-APC, FC APC to FC APC, single-mode inline coupling

The Single-mode Fiber Optic Adapter No name AD-FC-APC/FC-APC is an inline coupling device that connects two FC APC connectors in single-mode fiber installations. It provides precise mechanical alignment between ferrules to maintain low insertion loss and stable optical contact. The adapter is passive, compact and suitable for use in telecommunication networks, passive optical networks (PON), test equipment and fiber patch panels where FC APC terminations are used.

Advantages

This FC APC to FC APC inline coupling offers consistent mechanical alignment for single-mode fibers and reduces back reflection thanks to the APC end-face geometry. Its compact, passive design requires no power and is compatible with splicing enclosures, wall plates and small fiber distribution frames. The adapter delivers repeatable performance for routine connections and testing without introducing electronic components or active elements.

Suitable for (tasks / use cases)

• Connecting two FC APC-terminated single-mode patch cords or pigtails
• Linking segments in fiber patch panels and distribution frames
• Integrating into splicing enclosures and wall plates for permanent or semi-permanent connections
• Temporary coupling during optical testing and measurement setups

Key specifications

• Connector type: FC APC to FC APC
• Fiber type: single-mode (SM)
• Function: inline coupling / adapter
• End-face geometry: angled physical contact (APC)
• Design: compact, passive mechanical alignment sleeve

How to use

Insert one FC APC connector into each end of the adapter until a secure mechanical fit is achieved. Ensure connector end-faces are clean and free of dust or debris before mating to prevent increased insertion loss or damage. For repeated use, inspect end-faces with a fiber inspection tool and clean with approved fiber cleaning materials when necessary. Mount the adapter in a compatible panel, enclosure or wall plate if a fixed installation is required.

Usage recommendations

Store and handle the adapter in a clean environment and avoid touching ferrule end-faces. Use appropriate dust caps when connectors are unmated, and perform regular visual inspection and cleaning of connectors and adapter interfaces to maintain low insertion loss and low back reflection performance.