Fiber Couplers and Fiber Collimators with special receptacles for coupling into single-mode and polarization-maintaining fiber cables or for producing a collimated beam (low divergence beam) with Gaussian beam profile exiting a single-mode fiber cable. All Fiber Couplers (Fiber Ports) and Fiber Collimators have an adjustable focus. The couplers are available with receptacles type LSA which are compatible with DIN, AVIO and AVIM connectors (PC and APC). The couplers are also available with SMA905 high power receptacle (0°, 5° and 8°-polish).