A PC fiber optic patch cord is a fiber cable with Physical Contact (PC) connectors on both ends, designed for low-loss, short-distance optical connections in networks and lab setups.

Overview

A PC (Physical Contact) fiber optic patch cord is a type of fiber optic cable terminated with connectors that have a slightly curved end-face, ensuring the fiber cores make direct contact when mated. This design minimizes back reflection and insertion loss, making it suitable for high-performance optical networks . PC patch cords are commonly used in single-mode and multimode networks, connecting switches, routers, transceivers, patch panels, and test equipment .

Connector Types

PC patch cords are available with various connector types, including:

• FC/PC: Threaded connectors ideal for lab and measurement applications .
• LC/PC, SC/PC, ST/PC: Widely used in data centers and enterprise networks .
• MPO/MTP: Multi-fiber connectors for high-density applications . Each connector type has specific applications depending on equipment compatibility and network design.

Fiber Modes and Jacket Options

• Single-mode (SM): Optimized for long-distance, high-bandwidth transmission.
• Multimode (MM): Suitable for shorter distances, such as intra-rack or inter-rack connections . Patch cords come with different jacket materials and diameters, such as Ø3 mm PVC or Ø900 µm Hytrel® furcation tubing, which affect flexibility and compatibility with cable management systems .

Applications

PC fiber optic patch cords are used in:

• Data centers: Connecting servers to top-of-rack switches or patch panels .
• Telecommunications: Linking network devices and fiber transceivers .
• Laboratory and test setups: Connecting OTDRs, power meters, and light sources .
• FTTH and building entry: Indoor-outdoor transition cables connecting outside plant to customer premises .

Performance Considerations

When selecting a PC patch cord, consider:

• Insertion loss and return loss: PC connectors typically offer low back reflection (~-40 dB) suitable for most applications .
• Durability: High-quality cords withstand thousands of mating cycles.
• Custom options: Some manufacturers provide custom lengths, jacket colors, and AR-coated ends for specialized applications . PC patch cords are a reliable choice for standard optical connections, while APC (Angled Physical Contact) connectors are preferred in applications requiring even lower back reflection, such as analog video or high-precision measurement systems.