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Fc-lc single-mode dual-core fiber

Fiber and communications infrastructure knowledge brief Published 03 Jan 2026

Prepared for preliminary research by the ROGER FIBRE knowledge desk. Confirm optical interfaces, port or core capacity, electrical input and output, enclosure protection, thermal design and installation limits against current standards and product documentation.

FC-LC single-mode dual-core fiber is a high-performance optical patch cord with FC and LC connectors, designed for single-mode transmission with two fiber cores for duplex communication.

Overview

An FC-LC single-mode dual-core fiber patch cord is a fiber optic cable that connects devices using an FC (Ferrule Connector) on one end and an LC (Lucent Connector) on the other, supporting single-mode (SM) transmission. The dual-core (or duplex) configuration means it contains two separate fiber cores, allowing simultaneous bidirectional communication, which is essential for high-speed data transfer in networks ( ). Key FeaturesHigh-quality ferrules for precise alignment and minimal signal loss ( ).

Low insertion loss and high return loss, ensuring efficient signal transmission and minimal reflection ( ). Durable and interchangeable connectors, compliant with standards such as Telcordia GR-326-CORE, IEC, and RoHS ( ). Customizable lengths and specifications to meet specific network requirements ( ).

ApplicationsFC-LC single-mode dual-core fibers are widely used in: Local area network (LAN) interconnections between buildings or network racks ( ). Optical links in active devices such as switches, routers, and optical transceivers ( ). Telecommunication networks, including CATV, FTTx, and WANs ( ).

Testing and production of optical devices where precise single-mode transmission is required ( ).

Advantages

Reliable single-mode performance for long-distance and high-bandwidth applications. Duplex configuration allows simultaneous send and receive channels, reducing the need for separate cables. Compatibility with multiple connector types (FC, LC, SC, ST, MU) for flexible network integration ( ).

Summary

The FC-LC single-mode dual-core fiber is a versatile and high-performance patch cord suitable for modern optical networks requiring low-loss, duplex single-mode connections. Its combination of FC and LC connectors provides secure, precise connections for telecom, data center, and LAN/WAN applications, while meeting industry standards for quality and reliability ( ).

Fc-lc single-mode dual-core fiber - ROGER FIBRE ATELIER [PDF]

Fc-lc single-mode dual-core fiber

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Technical note

This reference is intended for preliminary fiber and communications infrastructure research. Optical interface, fiber type, port or core capacity, electrical input and output, enclosure protection, cooling, installation limits and applicable standards must be verified for the specific project.

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