The HP/Agilent 81571A is a variable optical attenuator module engineered for precise optical power control across the extended C- and L-band spectrum. Designed as a single-slot plug-in for Agilent’s Lightwave Multichannel Platform mainframes, this module delivers 0–60 dB attenuation with 0.001 dB resolution and ±0.1 dB accuracy. The angled connector interface minimizes back reflection, achieving typical return loss of 57 dB while maintaining wavelength flatness below 0.05 dB across 1200–1700 nm.
Technical Specifications
• Attenuation range: 0 to 60 dB
• Attenuation resolution: 0.001 dB
• Attenuation accuracy: ±0.1 dB
• Wavelength range: 1200 to 1700 nm
• Wavelength flatness: < 0.05 dB
• Return loss: Typically 57 dB
• Maximum input power: +33 dBm (2 W)
• Repeatability: < 10 mdB
• Fiber type: Single-mode 9/125 µm SMF28
• Polarization dependent loss (PDL): Low
• Polarization mode dispersion (PMD): Low
• Chromatic dispersion (CD): Low
– Key Features
• Angled connector design for back-reflection minimization
• Exceptional wavelength flatness suited for DWDM applications
• High input power handling capability at +33 dBm
• Low insertion loss with minimal signal distortion
• Offset calibration functionality for optical path compensation
• Wavelength and offset value table storage for wavelength-dependent correction
• Integrated shutter for power meter zeroing without attenuation adjustment
• Built-in calibration capability
– Typical Applications
• DWDM transmission system testing and characterization
• EDFA and Raman amplifier testing
• Optical communication system testing and power level calibration
• High-power optical signal attenuation and control
– Compatibility & Integration
The 81571A integrates as a single-slot module within Agilent's Lightwave Multichannel Platform mainframes: 8163A/B, 8164A/B, and 8166A/B series. Module weight is approximately 3 lbs.
