Duplex Fiber Optic Single-Mode lc

Duplex Single-Mode LC connectors are compact, dual-fiber connectors designed for bidirectional optical communication in high-speed networks.

Overview

A Duplex L

C connector integrates two LC (Lucent Connector) interfaces in a single housing, allowing one fiber to transmit (TX) and the other to receive (RX) optical signals.

The L

C form factor uses a 1. 25 mm ceramic ferrule, smaller than the SC connector, enabling high-density port layouts in data centers and telecom equipment.

Duplex L

C connectors are widely used with single-mode fiber (SMF) for long-distance, low-loss optical transmission, supporting Ethernet speeds from 1G to 400G. Key FeaturesDual-Fiber Design: Supports simultaneous bidirectional communication, essential for Ethernet and telecom links. Compact Form Factor: Small size allows high-density patch panels and SFP/SFP+/SFP28 transceiver compatibility.

Polish Types: UPC (Ultra Physical Contact): Flat polish, return loss ~ -50 dB, typically blue.

AP

C (Angled Physical Contact): 8° angled polish, return loss ~ -60 dB, typically green, used in DWDM and CATV applications. Connector Variants: Uniboot LC (both fibers in a single jacket), polarity-reversible LC, and pull-tab LC for easier handling in dense panels.

Applications

Data Centers: High-density patch panels and SFP transceivers for 1G, 10G, 25G, 40G, 100G, and 400G Ethernet. Telecommunications: Long-distance single-mode fiber links, supporting distances up to 10 km at 1310 nm and 40 km at 1550 nm. Enterprise Networks: Backbone and distribution layer connections requiring reliable bidirectional communication.

Advantages

Low Insertion Loss: Ensures minimal signal degradation over long distances. High Return Loss: Reduces reflections, critical for single-mode applications. Ease of Installation: Push-pull latch design simplifies mating/unmating in crowded panels.

Compatibility: Works with both single-mode and multimode fibers, though single-mode is preferred for long-distance, high-speed links.

Summary

Duplex Single-

Mode LC connectors are the standard choice for high-performance optical networks requiring bidirectional communication, compact form factor, and reliable long-distance transmission. They are essential in modern data centers, telecom networks, and enterprise backbones, providing efficient, low-loss connections compatible with a wide range of SFP optical modules and patch panels.