The Agilent Keysight 81571A is a variable optical attenuator module that delivers precise control of optical power levels across the 1200 nm to 1700 nm band. This plug-in module integrates into Keysight’s Lightwave Solution Platform mainframes, providing 0 dB to 60 dB attenuation with 0.001 dB resolution and accuracy better than ±0.1 dB. The unit handles up to 2 W (+33 dBm) input power, making it ideal for EDFA and Raman amplifier characterization, component testing, and multi-channel transmission system validation. Single-mode SMF28 fiber compatibility, low polarization-dependent loss, and a built-in shutter for power meter zeroing and channel-drop simulation enable flexible measurement and test workflows in demanding telecommunications and optical component environments.
Technical Specifications
• Attenuation Range: 0 dB to 60 dB
• Resolution: 0.001 dB
• Attenuation Accuracy: ±0.1 dB (maximum)
• Repeatability: 10 mdB (maximum)
• Wavelength Range: 1200 nm to 1700 nm (single-mode)
• Wavelength Flatness: 0.05 dB (maximum)
• Maximum Input Power: 2 W (+33 dBm)
• Return Loss: 57 dB (typical)
• Fiber Type: Single-mode 9/125 µm SMF28
• Connector Interface: Angled contact design
– Key Features
• Single-slot plug-in module for Lightwave Solution Platform scalability
• Low polarization-dependent loss, polarization mode dispersion, and chromatic dispersion for minimal signal distortion
• Integrated mechanical shutter for safe power meter zeroing and channel-drop simulation
• Reference power functionality with relative attenuation and power display
• Built-in calibration capability for enhanced accuracy
• High input power handling suited for amplifier and component characterization
– Typical Applications
• EDFA and Raman amplifier characterization
• Optical network component testing
• DWDM multi-channel transmission system validation
• Controlled optical power attenuation in fiber-optic test setups
– Compatibility & Integration
The 81571A operates within Agilent/Keysight Lightwave Solution Platform mainframes: 8163A/B, 8164A/B, and 8166A/B series. Designed exclusively for single-mode fiber (9/125 µm SMF28) with angled contact connectors.
