Direct-Attach Fiber-Optic Attenuator

Direct-Attach Fiber-Optic Attenuator
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When light intensity has to be reduced, the direct-attached attenuator is a great choice with your AvaLight series light sources. The attenuator helps in situations where detector saturation is an issue. It is attached to the light source and has a SMA connector to couple to other measurement devices and your spectrometer.

The attenuation can be set from 0-100%, which can be fixed with a set screws. It is supplied with a UV/VIS/NIR collimating lens.

The ATT-DA series attenuators come in two versions: the ATT-DA is meant to be used with the AvaLight-DHc, the AvaLight-XE and AvaLight-LED. The ATT-DA-HAL-Mini is meant to be used with an AvaLight-HAL -Mini light source.


Wavelength range 200-2500nm
Attenuation 0-100%
Iris aperture 0.0 – 12.0 mm
Iris construction 2 x 5 leaves
Fiber connection SMA-905 connector
Light source AvaLight-DHc/XE/LED AvaLight-HAL-Mini
Light source mounting SMA-905 thread UNS-thread (remove COL-UV/VIS)
Material Black anodized aluminum
Dimensions 27 mm round x 49 mm 37 x 41 x 57 mm

Order Info


Direct-attach Fiber-optic Attenuator, 0-100%, SMA connector


As ATT-DA, for AvaLight-HAL-Mini