Agilent Keysight 81570A Optical Attenuator

The Agilent Keysight 81570A is a variable optical attenuator (VOA) plug-in module engineered for precise optical power control across the Lightwave Solution Platform. Operating from 1200 nm to 1700 nm, it delivers 0–60 dB attenuation with ±0.1 dB accuracy and 0.001 dB resolution. The module handles up to 2 W (+33 dBm) input power and achieves <0.05 dB wavelength flatness across its range. An internal shutter enables power meter zeroing and protection, while built-in calibration reduces uncertainties in multi-wavelength testing. Low PDL, PMD, and CD characteristics preserve signal integrity. Return loss reaches 45 dB typical.

Designed for single-mode 9/125 µm SMF28 fiber, the 81570A suits optical amplifier characterization, DWDM transmission system testing, and component validation in telecom and data communication environments.

– Technical Specifications

• Attenuation range: 0–60 dB
• Attenuation accuracy: ±0.1 dB
• Repeatability: <10 mdB
• Resolution: 0.001 dB
• Wavelength range: 1200–1700 nm (single mode)
• Wavelength flatness: <0.05 dB
• Maximum input power: 2 W (+33 dBm)
• Return loss: 45 dB (typical)
• Fiber type: Singlemode 9/125 µm SMF28

– Key Features

• Internal shutter for power meter zeroing and protection
• Built-in calibration capability for multi-wavelength applications
• Low insertion loss with excellent spectral flatness
• Minimal signal distortion from PDL, PMD, and chromatic dispersion
• Straight connector interface

– Typical Applications

• Optical amplifier testing (EDFA and Raman amplifiers)
• DWDM transmission system characterization
• Optical network component validation
• Telecommunication and data communication system testing

– Compatibility & Integration

The 81570A occupies a single slot in Agilent Lightwave Solution Platform mainframes, including the 8163A/B, 8164A/B, and 8166A/B.