Optical Attenuator: Inline Variable (VOA)
This manually-adjusted, inline, variable optical attenuator (VOA)
is used for precisely balancing the signal strengths in fiber circuits
and also for balancing an optical signal when evaluating the
dynamic range of the measurement system. These in-line VOAs
include SMF-28e fiber with a 3mm jacket, and they are offered
either terminated with FC/APC connectors or non-terminated.
These attenuators are available with other connector styles; please
contact your local Thorlabs office for a quotation.

Specifications
■ Operating Wavelength:
1200 to 1600nm
■ Fiber: SMF-28e or Equivalent
■ Residual Attenuation: ≤1.5dB
■ Attenuation Range: ≥50dB
■ Attenuation Resolution: ≤0.1dB
■ Back Reflection (Return Loss):
<–55dB
■ Polarization Sensitivity: ≤0.2dB
■ Optical Power: ≤300mW
■ Thermal Stability: ≤0.03dB/°C
■ Operating Temperature: 0 to 60°C
■ Storage Temperature: –40 to 75°C
■ Dimension: 38 x 30 x 19mm