Single-Mode Dual-Core Network Patch Cord

　　The single-mode dual-core network patch cord is an innovative fiber-optic solution that integrates two separate single-mode fibers (each with a 9/125um core) into a single jacket, enabling bidirectional data transmission over long distances. Unlike standard single-mode patch cords (which are simplex, carrying data in one direction), the dual-core design provides two independent channels—one for transmission (Tx) and one for reception (Rx)—eliminating the need for two separate simplex cords. This reduces cable clutter, simplifies installation, and lowers overall network costs, making it ideal for long-haul applications like telecom backbones, campus network interconnects, and data center long-distance links where bidirectional communication is essential.

　　Built on the strengths of single-mode fiber, this dual-core cord retains all the key performance benefits of single-mode technology: minimal modal dispersion, low attenuation (<0.4 dB/km at 1310nm), and support for ultra-long transmission distances (up to 100 km+). Each core operates independently, supporting data rates from 1 Gbps to 400 Gbps (e.g., 400GBASE-LR8) and wavelengths of 1310nm or 1550nm—enabling symmetric, high-speed bidirectional communication for applications like real-time video conferencing, cloud computing (sending user data while receiving server responses), and telecom voice-over-IP (VoIP) services. The immunity to EMI/RFI also remains intact, ensuring reliable performance in interference-prone environments.

　　The dual-core design includes practical features for ease of use and maintenance. The two fibers within the jacket are often color-coded (e.g., blue for Tx, white for Rx) to prevent cross-connection, a critical detail that speeds up installation and reduces troubleshooting time. The jacket (LSZH or PVC) is durable and flexible, resisting abrasion and temperature fluctuations, while connectors (typically LC-LC, SC-SC, or FC-FC) are equipped with precision ceramic ferrules to ensure low insertion loss (<0.3dB) for both cores. The cord complies with TIA/EIA-568-C.3 and IEC 61754 standards, guaranteeing compatibility with all single-mode dual-core hardware.

　　Available in lengths from 5 meters (rack-to-rack long-haul links) to 100 meters (campus interconnects) and color-coded yellow (with internal fiber color differentiation), the single-mode dual-core network patch cord offers a compact, efficient solution for bidirectional long-distance connectivity—simplifying network design while delivering the speed and reliability of single-mode fiber.

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