The HP/Agilent 81623B Germanium Optical Power Head is a precision optical power detection instrument engineered for fiber optic and free-space beam measurements across the near-infrared spectrum. Built around a 5 mm diameter large-area Germanium detector, this power head delivers accurate, repeatable measurements from +10 dBm to −80 dBm and connects to Agilent lightwave mainframe systems via dedicated single or dual interface modules. The instrument supports flexible connector options—FC/PC, SC/PC, E-2000, ST/PC, and LC/PC—plus bare fiber and open beam configurations, making it adaptable to diverse test setups.
Technical Specifications
• Detector: Large-area Germanium sensor, 5 mm diameter
• Wavelength Range: 750 nm to 1800 nm (recommended 850 nm)
• Power Range: +10 dBm to −80 dBm
• Wavelength Accuracy: ±2.2% (1000–1650 nm); ±2.5% (800–1000 nm); enhanced options available with ±1.7% (1000–1650 nm) and ±2.5% (800–1000 nm) via calibration options C01/C02, C85/C86
• Fiber NA Compatibility: Up to 0.3
• Analog Output: 0–2 V (BNC connector, rear panel)
• Averaging Time: 100 µs to 10 s
• Data Logging: Up to 20,000 samples
• Dimensions: 335 mm L × 75 mm H × 32 mm W
• Weight: 0.5 kg
– Key Features
• Automatic power ranging for fast measurements across wide dynamic range
• Real-time minimum and maximum value tracking
• D-shaped magnetically held adapter ring for quick connector changes
• Removable 81624DD adapter ring for threaded-type connectors
• Proportional analog output for direct system integration
– Typical Applications
• Optical transmitter and receiver characterization
• Fiber optic link power budget analysis
• Free-space optical system measurements
• Wavelength-dependent power response validation
– Compatibility & Integration
Operates with Agilent 81618A (single-channel) or 81619A (dual-channel) interface modules. Compatible with Agilent 8163A/B, 8164A/B, and 8166A lightwave mainframe systems. Supports connectorized and bare fiber inputs with optional adapters (81000FA, 81000KA, 81000PA, 81000VA, 81003LA).
