DescriptionHere’s a clear explanation of what a 3 m LC/LC patch cord cable is and what it’s used for — plus typical specs you’ll see:�� What It IsA fiber optic LC/LC patch cord (sometimes called LC-LC jumper cable) is a fiber optic cable with LC connectors on both ends. It’s used to connect optical equipment like switches, optical transceivers, patch panels, fiber distribution frames, and ONUs/ONTs in networks.“LC” stands for Lucent Connector, a small form-factor fiber connector with a push-and-click latch that’s much smaller than older SC connectors.“LC/LC” simply means LC on both ends of the cable — perfect for linking two LC ports.�� Typical SpecificationsHere’s what you’ll see on cables like this:GeneralLength: Typically 3 m (3 meters) – common for rack-to-rack or panel connections.Mode Type:Single-Mode (SM) for long-distance and telecom links (9/125 µm core)Multimode (MM) for shorter links like data centers and LANs (50/125 µm or OM3/OM4)Duplex: Yes — it has two fibers (one for transmit, one for receive).ConnectorsConnector Type: LC male on both ends.Polish Options:UPC (Ultra Physical Contact) – most commonAPC (Angled PC) – lower reflectance for better signal in some networksPerformanceInsertion Loss: Usually ≤ 0.3 dB — low signal loss per connector.Return Loss: Typically ≥ 50 dB (UPC) or ≥ 60 dB (APC).Jacket & BuildJacket Types: PVC or LSZH (Low Smoke Zero Halogen)Outer Diameter: Often ~2.0 mm or 3.0 mm�� Where It’s UsedThese cables are essential in:Data Centers & Server RoomsTelecom networks (fiber backbones)FTTx / FTTH deploymentEnterprise LAN & SAN connectionsConnecting fiber SFP/SFP transceivers�� NotesThe cable color often indicates fiber type:Yellow for single-mode
