Multimode fiber optic cable FC interface

A multimode fiber optic cable with an FC interface uses a threaded, keyed connector with a 2.5mm ferrule, suitable for high-vibration environments and precise fiber alignment.

FC Connector Overview

The FC (Ferrule Connector) is a fiber optic connector featuring a round, threaded coupling nut that ensures a secure connection, making it ideal for environments with vibration or movement . The connector uses a 2.5mm ferrule, which can be made of stainless steel or ceramic for multimode fibers, with hole sizes typically ranging from 80µm to 1100µm depending on the fiber core diameter . The ferrule is axially spring-loaded, which maintains physical contact between fiber end faces and minimizes insertion loss .

Multimode Fiber Compatibility

Multimode fibers have larger core diameters (commonly 50µm or 62.5µm) compared to single-mode fibers, allowing multiple light modes to propagate. FC connectors are compatible with these fibers and can be used in PC (Physical Contact) or UPC (Ultra Physical Contact) polishing types, which reduce back reflection and improve signal quality . Multimode FC cables are often used in datacom, telecom, and measurement equipment applications .

Cable and Connector Features

• Threaded coupling: Provides a secure, vibration-resistant connection.
• Ferrule material: Stainless steel or ceramic for multimode fibers.
• Polishing types: PC, UPC, or APC (for single-mode).
• Axial spring: Ensures consistent contact force and low insertion loss.
• Custom lengths: Available in standard lengths (1m, 2m, 3m, 5m, etc.) with optional jacket types and fiber diameters .

Applications

Multimode FC fiber optic cables are commonly used for:

• Fiber-optic patch panels and jumpers in enterprise networks.
• Telecom and datacom equipment interconnections.
• Measurement and laboratory equipment requiring precise alignment.
• High-vibration environments where secure threaded connections are necessary .

Summary

A multimode fiber optic cable with an FC interface combines the advantages of large-core multimode fibers with the secure, threaded FC connector, providing reliable, low-loss connections in demanding environments. These cables are versatile, available in various lengths and ferrule materials, and are suitable for both standard network installations and specialized measurement applications .