Fiber Collimator / Fiber Coupler for collimating radiation exiting an optical fiber or as incoupler
The fiber collimators series 60FC is designed for collimating radiation
exiting optical fiber cables with high pointing stability. They can also be used
in reverse-mode as fiber incouplers. They are suitable for single-mode and
polarization-maintaining fiber cables leading to collimated beams with a Gaussian
intensity profile.
Please note that for multimode collimation the intensity profile is not Gaussian
and depends on certain fiber and radiation properties.
The features of the coupler type 60FC include:
Optics
The
monochromat
with focal length 5 mm is designed for collimating
single wavelengths. It is AR-coated from 980 - 1550 nm. It is
corrected for spherical aberrations and designed in such a way that it leads to
a diffraction-limited beam with an M2 < 1.05. The focus position varies strongly
with wavelength so that the collimator has to be recollimated after any changes to
the wavelength. It is not suitable for UHV applications.
Adjustment of focus
The distance between fiber end-face and collimating optics is adjusted by means
of an eccentric key. The lens does not rotate when adjusting the focus. The final
focus setting is locked by means of two radially arranged clamping screws.
Additionally attachment optics of series 60FC can be mounted to the
front of the collimator.
Optimum lens performance
The angled polish of connectors of type APC is considered by a
pre-angled mechanical coupling axis that compensates the beam deflection and
you can use the lens centrically. This minimizes aberrations simply resulting
from a non-ideal beam path through the lens.
Connector Type
The fiber collimator is equipped with a LSA-APC type receptacle.
The receptacle type LSA is compatible with fiber connectors type DIN, AVIO and AVIM.
Because of the spring-loaded fiber ferrule the fiber collimator has an additional grub
screw to increase pointing stability.
Material
The fiber collimator type 60FC is made from nickel silver (standard)
Mounting
The collimator can be placed into a standard mirror mount using the corresponding
adapters.
60FC-LSA-4-M5-08
Measurement tool for coupling into polarization-maintaining fiber cables
for Ø 12 mm to diameter Ø 25 mm, Ø 1'' or with system mount Ø 19.5 mm
to attach in the front of collimators with system mount Ø 8 mm
for coupling into single-mode and polarization-maintaining fiber cables
Single-mode fiber cables
Polarization-maintaining fiber cables
