Fiber collimators 60FC

       Fiber collimators made by Schäfter+Kirchhoff transform divergent light of a single-mode fiber into a collimated beam. They are designed for singlemode fibers with FC connectors (optionally type ST, DIN AVIO and F-SMA). Fibers with 8°-polish (FC-APC, for avoidance of back-reflection into the optical path) are combined using fiber collimators 60FC-4-… and 60FC-T-4-… with an inclined coupling axis. This provides a centered and concentrically symmetric laser beam as effectively as a 0°-polished fiber attached to a fiber collimator with a coaxial coupling axis.

      The fiber collimators have an axial limit stop for the fiber ferrule, which is locked using a grub screw to ensure a constant focal position and highly reproducible assembly. The eccentric key is used to focus the fiber collimator and the desired position is locked using two radially arranged clamping screws.

Performance Features

• Focal lengths from 2.7 to 20 mm
• Beam diameters from 0.5–3.6 mm (1/e²-value of Gaussian intensity distribution)
• Compact Ø12 mm housing
• Integral focussing
• Amagnetic collimators made from titanium on request
• Front connector accepts micro-focus optics of the series 5M-… and polarizers of the series 5PF-…
• Numerous AR coatings for individual ranges covering 370 to 2300 nm
• Infrared optics made of Chalcogenide glass for wavelengths > 1000 nm (see Technical Data, lens designed for λ = 2.5 μm)