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60FC-SMA-T-23-M25-02

Fiber Coupler for SMA-905 High Power Connectors

60FC-SMA-T-23-M25-02
60FC-SMA-T-23-M25-02
60FC-SMA-T-23-M25-02
60FC-SMA-T-23-M25-02
60FC-SMA-T-23-M25-02

Features

High precision fiber coupler optimized for high pointing stability and long-term stability specially designed for SMA-905 high power connectors with 0°, 5° or 8°-polish. Efficient coupling of collimated laser radiation into single-mode and PM fiber cables including PCF fibers.
  • Focal length 25 mm
  • Optics type: Doublet optics, Achromatic
  • AR-Coating: 650 - 1050 nm
  • Compatible with high power SMA-905 connector
  • Integrated TILT adjustment to prevent aberrations from vignetting or clipping
  • Front connector accepts attachment optics

Description

The fiber coupler series 60FC-SMA is designed for coupling into SMA-905 high power connectorized single-mode and polarization-maintaining fiber cables including PCF fibers cables. It can also be used to collimate radiation exiting such fiber cables. Please note that the collimated beam profile strongly depends on fiber properties and is not Gaussian for PCF fibers.
The features of the coupler type 60FC-SMA include:

Optics
The achromat with focal length 25 mm is designed for collimating multiple wavelengths. It is AR-coated from 650 - 1050 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.

Adjustment of focus and TILT
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-SMA can be mounted to the front of the collimator. Additionally, the collimator has an integrated TILT adjustment. Unlike common FC-type connectors, the SMA-905 High Power Connector does not have a spring-loaded ferrule. With varying ferrule length, the point of emission not only shifts axially, but also laterally with respect to the optical axis in the case of an inclined polish (5° and 8° -polish). By using the TILT adjustment, the point of emission can be adjusted onto the mechanical axis of the fiber coupler. When collimating a laser beam, the integrated TILT adjustment for the fiber coupler 60FC-SMA-T prevents vignetting or diffraction arising from a clipped beam. When coupling into a fiber, high efficiencies can only be reached when the tilt is adjusted properly.

Optimum lens performance
The angled polish of connectors of type SMA-905 with 5° or 8° 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 F-SMA type receptacle. Unlike the fiber collimators for FC-PC or FC-APC connectors (60SMS or 60FC-T) the fiber connectors of type high power SMA 905 do not have an index key for alignment of the polarization axis of the fiber cable. A groove in the collimator helps with the manual axis alignment.

Material
The fiber collimator type 60FC-SMA is made from nickel silver/aluminium (standard)

Mounting
The collimator can be placed into a standard mirror mount

Technical data

60FC-SMA-T-23-M25-02

Series
60FC-SMA
Order Code
60FC-SMA-T-23-M25-02
Focal length
25 mm
AR coating
02
Wavelength range
650 - 1050 nm
Lens type
Doublet optics
Correction
Achromatic
Numerical aperture
0.23
Clear aperture
11.4 mm
Connector type
F-SMA 5°
Outer diameter
Ø 25 mm
Length
40 mm
Tilt adjustment
Yes
Front fitting
Ø 19.5 mm
Housing material
Nickel silver/Aluminium
Weight
64 g
UHV compatible
No
Suitable for multimode
Yes
Note
Dimensions (for a complete dimensional drawing please refer to the downloads section)

Downloads

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Accessories

55EX-5
Eccentric key with a stroke of ± 1.5 mm.
50HD-15
Hex key WS 1.5
Polarization Analyzer SK010PA

Measurement tool for coupling into polarization-maintaining fiber cables