The HP/Agilent 81575A is a variable optical attenuator module engineered for precise control of optical power levels within Agilent’s Lightwave Solution Platform. This plug-in module integrates active power control functionality, utilizing a photodiode and monitor tap to maintain a stable output power level through closed-loop feedback—essential when input power fluctuates. The straight connector interface design supports integration into existing fiber optic infrastructure across multiple connector types and fiber modes.
## Technical Specifications
• Product Family: Agilent 8157xA Series Variable Optical Attenuator Modules
• Interface Type: Straight connector interface
• Power Control: Integrated active feedback loop with photodiode and monitor tap for output power stabilization
• Accuracy & Resolution: High accuracy and resolution for precise optical power control
• Wavelength Flatness: Excellent wavelength flatness across operating range
• Insertion Loss: Low insertion loss characteristics
• Input Power Handling: Capable of handling high input power levels
• Form Factor: Single-slot plug-in module for compatible mainframes
• Quality Standard: ISO 9001 certified production
## Key Features
• Active power control maintains stable output despite input power variations
• Photodiode-based feedback loop for real-time power monitoring
• Calibration functionality for reference power setting
• Attenuation and power levels can be set and displayed relative to user-defined reference
• Optional integrated shutter for channel drop simulation or optical protection
• Compact, durable design suitable for laboratory and field deployment
• User-friendly operation with quick adjustment capability
## Typical Applications
• Optical amplifier testing (EDFA, Raman amplifiers)
• DWDM transmission system analysis
• Multi-wavelength system characterization
• Power level stabilization in variable input conditions
## Compatibility & Integration
Designed as a plug-in module for Agilent’s Lightwave Solution Platform mainframes: 8163A/B, 8164A/B, and 8166A/B. Compatible with various connector types and fiber modes.
