what is the fiber patch cable?

Fiber patch cable is the fiber cable directly connected with the desktop computer or device , to facilitate device connectivity and management.Tt is used as jumper cables from the device to the optical fiber cabling link.Singlemode fiber cable is primarily used for applications involving extensive distances. Multimode fiber, however, is the cable of choice for most common local fiber systems as the devices for multimode are far cheaper. The common core sizes of multimode fiber are OM1 62.5 micron and 50 micron in OM2 or 10 Gigabit Laser Optimized OM3. We carry singlemode and multimode optical fiber patch cables with a variety of connector types such as LC, SC, ST, and MTRJ. Duplex fiber cables consist of two fiber cores and can be either multimode or singlemode. This dual core system allows for the bi-directional transfer of data, as opposed to simplex fiber cables, which typically only propagate data in one direction. The exception being Wavelength Division Multiplexing (WDM) systems in which bidirectional communication is acheived over singlemode simplex fiber using multiple wavelengths.

This information from http://www.fiberstore.com/Fiber-optic-patch-cord–aid-14.html