60FC-SF-0-M6.2-33

Fiber Collimator / Fiber Coupler with super-fine thread

Features

The fiber collimator with super-fine thread is an improved advanced version of the series 60FC-F collimators. It is designed for collimating radiation exiting from an optical fiber cable or used in reverse for coupling a beam into an optical fiber cable. The focus adjustment is done using a super-fine-threaded ring.

All benefits of the 60FC-F fiber coupler
Increased pointing stability and reduced backlash during the focus setting
Super-fine thread for an even more precise focus setting with 0.35 mm pitch
Focal length: 6.2 mm
Optics type: Doublet optics, Achromatic
AR-Coating 390 - 670 nm
Paraxial coupling axis, FC-PC connection
Compact Ø 12 mm housing

Description

The fiber collimators series 60FC-SF with super-fine thread is an improved advanced version of the series 60FC-F collimators. They are 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.
The features of the collimator type 60FC-SF include:

Optics
The achromat with focal length 6.2 mm is designed for collimating multiple wavelengths. It is AR-coated from 390 - 670 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. Additionally it is corrected for chromatic aberration so that there are certain wavelengths or wavelength ranges where the focal length does not vary significantly. It is not suitable for UHV applications.

Fine-thread adjustment of focus
The distance between fiber end-face and collimating optics is adjusted using a threaded ring with a super-fine thread. The improved mechanics lead to an increased pointing stability and reduced backlash during the focus setting. The lens in these fiber collimators is spring-loaded. The linear bearing ensures that the lens does not rotate when adjusting the focus.

Please note:
Please do NOT use the two radially arranged screws. These pin screws are now used for a different purpose in the 60FC-SF fiber couplers than for the previous version of the fiber couplers with fine-focusing mechanism 60FC-F. They are to be used by Schäfter+Kirchhoff only! They are used for adjusting the backlash of the fine adjustment mechanics and are NOT used for fixing the collimation setting.

Connector Type
The fiber collimator is equipped with a FC-PC type receptacle. Because of the spring-loaded fiber ferrule the fiber collimator has an additional grub screw to increase pointing stability.

Material
The fiber collimator is made from eco brass ®.

Mounting
The collimator can be placed into a standard mirror mount using the corresponding adapters.

Technical data

60FC-SF-0-M6.2-33

Series

60FC-SF

Order Code

60FC-SF-0-M6.2-33

Focal length

6.2 mm

AR coating

Wavelength range

390 - 670 nm

Lens type

Doublet optics

Correction

Achromatic

Numerical aperture

0.2

Clear aperture

2.5 mm

Connector type

FC-PC

Outer diameter

Ø 12 mm

Length

35.5 ± 1 mm

Tilt adjustment

Housing material

Ecobrass

Weight

29 g

UHV compatible

Suitable for multimode

Note

Dimensions (for a complete dimensional drawing please refer to the downloads section)

Downloads

Adjustment_60FC-SF.pdf

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