The Agilent/Keysight 81632A is an InGaAs optical head for precise optical power measurement across telecom and datacom wavelengths. It operates as a plug-in module within the 816x mainframe series, delivering high-accuracy power detection with fast signal processing and onboard data storage. The sensor achieves ±3% accuracy across the 1200 nm to 1630 nm band and supports standard single-mode and multimode fiber up to 62.5 µm core diameter.
Technical Specifications
• Sensor Type: InGaAs
• Wavelength Range: 800 nm to 1650 nm
• Power Range: +10 dBm to −80 dBm
• Accuracy (1200 nm to 1630 nm): ±3%
• Linearity (CW, +10 dBm to −60 dBm): ±0.02 dB ±20 pW
• Display Resolution: 0.0001 dB/dBm; 0.01 pW to 10 pW (range-dependent)
• Averaging Time (minimum): 100 µs
• Warm-up Time: 20 minutes
• Dimensions: 75 mm H × 32 mm W × 335 mm D
• Weight: 0.5 kg
– Key Features
• Onboard signal processing enables fast data acquisition for high-channel-count and multiplexer/demultiplexer testing
• Internal memory for automated data logging
• Analog output via BNC connector (0–2 V range), proportional to optical signal strength with autoranging disable option
• SCPI-compatible programming interface
– Typical Applications
• Optical component testing and characterization
• Research and development in lightwave systems
• Manufacturing process monitoring and quality assurance
• Telecom and datacom wavelength power verification
– Compatibility & Integration
• Mainframes: Agilent 8163A/B, 8164A/B, 8166A/B Lightwave Measurement Systems
• Interface Modules: 81618A (single), 81619A (dual)
• Supported Fiber: Standard SM and MM up to 62.5 µm core (NA ≤ 0.24)
• Data Interfaces: GPIB, RS232C, Parallel Printer Interface (Centronics)
• Operating Temperature: +10°C to +40°C, non-condensing humidity
