LC/APC to LC/APC Fiber Patch Cable - Single Mode OS2 9/125μm Duplex

Some single-mode links can't tolerate light bouncing back toward the transmitter: PON and GPON, where one laser feeds thirty-two homes through a splitter; CATV and RF-over-fiber, where reflections show up as noise in the picture; DWDM and any analog or high-power system. That's what the APC connector is for. Its ferrule is polished at an 8° angle, so whatever light reflects at the end-face is steered out into the cladding instead of straight back down the core, and back reflection drops from about 50 dB with a flat UPC polish to 60 dB or better. This cord has the green LC/APC connector on both ends, for links where both ports are APC.

It's OS2 single-mode fiber, 9/125 µm, in a duplex configuration for a transmit and receive pair. Each cord is tested and the end-faces are checked by interferometer before it ships.

Features

• LC/APC on both ends. Green 8° angle-polished connectors, for the APC ports on PON, CATV, DWDM, and other reflection-sensitive gear.
• OS2 single-mode, 9/125 µm. For 1310 and 1550 nm links, from a rack jumper to a campus or metro span.
• Duplex. Two fibers for a matched transmit and receive pair, wired A-to-B.
• Low insertion loss. 0.15 dB typical and 0.30 dB maximum per connector.
• High return loss. 60 dB or better, about ten times less reflected light than a UPC connector.
• 1.25 mm ceramic ferrules, checked by 3D interferometry for end-face geometry and angle.
• Snap-in LC latch. Half the footprint of SC, for high-density OLT line cards and panels.
• UL Listed for the US and Canada, and RoHS compliant.
• Eight lengths from 1 to 30 m.

Where It Fits

It suits patching a PON or GPON OLT to an APC-terminated distribution panel, jumpers between splitter trays and ODF panels in an FTTH head-end or MDU, CATV and RF-over-fiber headends, DWDM and CWDM mux-to-mux links, optical test setups where a reflection would corrupt an OTDR or return-loss measurement, and any single-mode link where both ports are green.

Good to Know

Both ends are APC, so both of your ports need to be APC, which is the green connector. Almost every switch, SFP, and enterprise patch panel is blue UPC, and forcing an angled APC ferrule against a flat UPC one leaves an air gap that costs several dB and can scratch the port. If one end of your link is blue, you want the LC/UPC to LC/APC cord instead, and if both are blue, the LC/UPC to LC/UPC cord. APC ferrules are keyed so the angles line up when mated; if a connector won't seat, don't force it, check the key. Keep dust caps on until the moment you plug in, and clean both the connector and the port with a one-click cleaner before mating; a fingerprint on a single-mode ferrule costs more than the whole cord's loss budget, and on an APC end it also spoils the return loss the connector exists to provide. For runs longer than 30 m, or where the cord will be pulled through a tray or conduit, ask about a 3.0 mm jacket or an OFNR-rated cable.

Specifications