To identify single mode and multimode fiber patch cords, you can look at the color of the connector and the cable jacket.
Single mode fiber patch cords typically have yellow connectors and a yellow cable jacket, although sometimes they may have other colors such as blue or green. The connectors on single mode fiber patch cords are also typically smaller than those on multimode fiber patch cords.
Multimode fiber patch cords, on the other hand, typically have beige or aqua connectors and a beige or aqua cable jacket. The connectors on multimode fiber patch cords are usually larger than those on single mode fiber patch cords.
Another way to identify single mode and multimode fiber patch cords is to look at the core diameter of the fiber. Single mode fiber typically has a core diameter of 8-10 microns, while multimode fiber typically has a core diameter of 50 or 62.5 microns.
It's important to note that you should always use the correct patch cord for your specific application to ensure proper signal transmission and avoid damage to your equipment.
