Single-mode dual-core fiber with LC interface uses two fibers for transmit and receive, optimized for long-distance, high-bandwidth communication with compact LC connectors.

Overview

Single-mode dual-core fiber, also known as duplex single-mode fiber, consists of two separate fibers: one for transmitting data (Tx) and one for receiving data (Rx). This separation ensures clear, uninterrupted communication and prevents signal collision, making it ideal for high-speed networks and long-distance links . The fiber typically has a 9-micron core and 125-micron cladding, which allows light to propagate in a single mode, minimizing dispersion and signal loss over long distances .

LC Connector Features

The LC (Lucent Connector) interface is a small form factor connector with a 1.25 mm ceramic ferrule, designed for high-density applications . Key features include:

• Duplex configuration: Two fibers housed side-by-side for simultaneous Tx/Rx communication .
• Push-pull latch: Easy to connect and disconnect, even in crowded panels.
• Low insertion loss: Optimized for minimal signal loss and high bandwidth.
• Compact design: Supports high port density in data centers and telecom racks.
• Polish types: UPC (Ultra Physical Contact) for general use, APC (Angled Physical Contact) for applications sensitive to reflections, such as DWDM .

Applications

Single-mode dual-core LC fiber is widely used in:

• Data centers: Connecting switches, servers, and storage devices over long distances.
• Telecommunications: High-speed backbone links and metro networks.
• SFP+ modules: Optical transceivers using 10G or higher speeds, often supporting distances up to 80 km at 1550 nm wavelength .
• Enterprise networks: Reliable point-to-point connections between buildings or campuses.

Cable Specifications

• Core/Cladding: 9/125 µm (single-mode OS2 standard)
• Jacket: Typically yellow for single-mode, PVC or OFNR rated
• Connector: LC duplex with ceramic ferrules
• Length: Available in various lengths, commonly 2–20 meters for patch cables
• Performance: Supports 10 Gbps or higher, low attenuation, and high signal fidelity over long distances

Advantages

• High bandwidth and long-range transmission: Single-mode fiber supports minimal signal loss over kilometers .
• Compact and space-efficient: LC connectors allow dense port arrangements in racks and panels .
• Reliable duplex communication: Separate fibers for Tx and Rx prevent interference and maintain signal integrity .
• Durable and stable: Ceramic ferrules and robust construction ensure long-term performance . In summary, single-mode dual-core fiber with LC interface is a high-performance solution for long-distance, high-speed optical networks, combining the benefits of single-mode transmission with compact, reliable LC duplex connectors. It is suitable for data centers, telecom infrastructure, and enterprise networking where low loss, high bandwidth, and reliable duplex communication are critical.