The fibers from Schäfter+Kirchhoff are singlemode and polarization-maintaining. The fiber facette can have either a 0°-polish (PC) or an 8°-polish (APC) to prevent backreflection into the radiation source. The connector types available are FC, DIN AVIO, ST, E2000, and F-SMA. The 60SMS-... Laser Beam Couplers provide efficient coupling to the fibers, while collimation is performed using the 60FC-... Fiber Collimators for both PC and APC fiber types.