Dual-core (uniboot) fiber optic patch cords typically have cable diameters of 1.8 mm to 2.0 mm, designed for high-density routing and space-saving applications.

Cable Diameter and Design

Dual-core or uniboot fiber optic patch cords are engineered to carry two fibers within a single jacket, reducing bulk and simplifying cable management in data centers and telecom racks. The standard diameters for these cords are:

• 1.8 mm: Slim design for ultra-high-density applications, supporting tight routing and minimal congestion while maintaining mechanical strength (tensile strength ~90 N) .
• 2.0 mm: Slightly thicker for enhanced durability and bend resistance, with tensile strength up to 220–300 N depending on manufacturer and fiber type . These diameters are compatible with standard connectors such as LC, SC, ST, FC, MU, and LSH, and are suitable for both single-mode (OS2) and multi-mode (OM1–OM5) fibers .

Additional Specifications

• Jacket Material: Flame-retardant, rugged, and durable, with options for LSZH or plenum-rated jackets for safety in different environments .
• Bend Insensitivity: Many dual-core cords use bend-insensitive fibers, allowing ultra-tight bends without signal degradation, which is critical in high-density racks .
• Connector Ferrules: High-quality zirconia ferrules ensure low insertion loss and high return loss, meeting GR-326 and TIA/IEC standards .
• Tensile Strength: Varies by diameter; 1.8 mm cords typically support ~90 N, while 2.0 mm cords can support 220–300 N, ensuring durability during installation and handling .

Applications

Dual-core patch cords are ideal for:

• Data centers and server farms requiring high-density fiber routing
• FTTx, LAN/WAN, and telecom networks
• Environments where space-saving and reduced cable congestion are critical . These cords are factory-terminated and tested for insertion loss, return loss, and end-face quality, ensuring reliable performance in high-speed networks from 1G to 400G/800G . In summary, dual-core fiber optic patch cords are designed with 1.8–2.0 mm diameters, combining compactness, mechanical strength, and high-performance fiber standards for modern high-density network deployments.