Single-mode Patch Cord PC-522S (3m, SC/APC-SC/APC, G.652D)

The PC-522S patch cord is a 3-meter long single-mode fiber-optic cable terminated on each side with SC/APC connector. SC connectors are currently the most popular optical coupling elements due to simple matching (push-pull coupling with a snap), rectangular cross-section allowing dense packing of the connectors on the panel, and plastic construction (of course outside the ferrule). SC/APC connectors with stepped end style APC ferrule (8 degrees) ensure increased return loss.

The single-mode optical fiber with low water peak used in the patch cords is compliant with ITU-T G.652.D standard. It provides full compatibility and ability to perform quality splices with existing fiber-optic networks. The average attenuation of the fiber is about 0.4 dB/km for 1310 nm, and 0.25 dB/km for 1550 nm. The optical fiber is reinforced by aramid fibers (Kevlar) and covered with PVC sheath.

The optical fibers compliant with ITU-T G.652.D are now among the best standard single-mode fibers on the market. Before introduction of the G.652.D recommendations, optical systems could use one of the three transmission windows with lower attenuation (I: 850 nm, II: 1310 nm, III: 1550 nm). Systems based on optical fibers with reduced peak water can work in the whole band from 1280 nm to 1650 nm.