by OboDesk Team
Fiber optic patch cables are the backbone of modern networking. Whether you're connecting switches in a server rack or running a long-distance link between buildings, choosing the right cable type is critical for performance and reliability.
Single-mode (OS2) cables use a 9/125 micron core and carry one light path. They support longer distances (up to 100km) and higher bandwidth, making them the standard for data centers, telecom, and campus networks. The yellow jacket is the universal identifier.
Multi-mode (OM3/OM4/OM5) cables use a 50/125 micron core and carry multiple light paths. They're more affordable and easier to terminate, but limited to shorter distances (up to 300-550m for 10G). Aqua or violet jackets identify the grade.
| Connector | Type | Common Use |
|---|---|---|
| LC | Small Form Factor | Most common in modern switches and SFP modules |
| SC | Push-Pull | Patch panels, older equipment, PON networks |
| FC | Threaded | High-vibration environments, test equipment |
| ST | Bayonet | Legacy networks, campus installations |
| MPO/MTP | Multi-Fiber | 40G/100G data center trunk cables |
UPC (Ultra Physical Contact) connectors have a flat-polished end face with a blue boot. They offer low insertion loss and are standard for most data and telecom applications.
APC (Angled Physical Contact) connectors have an 8-degree angled end face with a green boot. The angle reduces back-reflection, making APC essential for analog video, CATV, and PON/FTTH networks where return loss matters.
Rule of thumb: Never mix APC and UPC connectors ??the angle mismatch causes high loss and can damage ferrules.
Browse our Fiber & Optics collection for patch cables, SFP modules, and fiber cleaning tools ??professional networking gear from OboDesk PRO.