FVA-UV Fiber Optic Variable Attenuator

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Light Control in Spectrometer Setups

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Item Description
FVA-UV Attenuator (standard version)
FVA-ADP-UV Adapter to connect attenuator to UV light source with collimating lens at its aperture. Note: the adapter is not compatible with the DH-2000 Family and DT-MINI-2GS.
FVA-ADP-VIS Adapter to connect attenuator to Vis light source with collimating lens at its aperture. Note: the adapter is not compatible with the DH-2000 Family and DT-MINI-2GS.
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The FVA-UV fiber optic variable attenuator is an opto-mechanical device that helps control the amount of light (signal) transmitted between two fibers. The FVA-UV couples to the fibers via SMA 905 connectors, with manual adjustment for attenuating light uniformly at all wavelengths from the UV-Vis through Shortwave NIR. Also available are adapters for connecting the attenuator to most of the light sources having a collimating lens at its aperture. The FVA-ADP-UV and FVA-ADP-VIS work with light sources that have a collimating lens (74 series), such as the LS-1 (legacy product) and HL-2000 Family. Please note that the FVA-ADP-UV and FVA-ADP-VIS are not compatible with the DH-2000 Family and DT-MINI-2GS light sources.

  • Attenuation control – attenuates UV-Vis-NIR wavelengths uniformly
  • Direct-attach options – adapters available for connecting to light sources
  • Manual adjustment – mechanical wheel for attenuating light

Engineering Specifications FVA-UV
Dimensions: 38.1 mm x 59.4 mm x 40 mm
Weight: 90 g
Attenuation wavelengths: ~200-2000 nm
Assembly ports: 3/8-24 threads for collimating lenses
Connectors: SMA 905
Adjustment wheel adjustment: 3.81 mm diameter @ open position; 1.52 mm @ 90% rotation
Adjustment wheel lock: 6/32 Nylon thumb screw
Adapters: FVA-UV for attachment to UV light sources FVA-VIS for attachment to VIS light sources. Please note that the FVA-ADP-UV and FVA-ADP-VIS are not compatible with the DH-2000 Family and DT-MINI-2GS light sources.

Applications in which this product is used:

Measurement Techniques in which this product is used: