The Agilent 81625B High-Powered Optical Head Interface is an InGaAs-based optical detector engineered for precision measurement of high-power optical signals across the near-infrared spectrum. This 5 mm diameter sensor element interfaces with Agilent lightwave multimeter mainframes via dedicated interface modules, delivering low uncertainty performance in demanding telecommunications and photonics test environments. It excels in optical amplifier characterization, transmitter output verification, and system calibration workflows where broad wavelength coverage and extended dynamic range are critical.
Technical Specifications
• Sensor Element: InGaAs (Indium Gallium Arsenide)
• Detector Size: 5 mm diameter
• Wavelength Range: 850 nm to 1650 nm
• Power Range: +27 dBm to −70 dBm (1250–1650 nm); +23 dBm to −70 dBm (850–1650 nm)
• Wavelength Accuracy: ±4.0% (950–1630 nm)
• Total Uncertainty: ±2.5% (1000–1630 nm); ±3.5% (950–1630 nm)
• Operating Temperature: 0 °C to +35 °C
• Humidity: Less than 80% RH (10 °C to 35 °C)
• Maximum Altitude: 2000 m
– Key Features
• Low polarization-dependent loss (PDL)
• Low spectral ripple
• High return loss
• Large area InGaAs sensor element
• Magnetic D-shape adapter with protective stand
– Typical Applications
• High-power optical signal detection and measurement
• Optical amplifier testing
• Optical transmitter output verification
• System calibration and return loss measurements
• Passive optical component characterization
• Laser power and stability monitoring
• Data logging in high-power fiber optic systems
– Compatibility & Integration
The 81625B requires an Agilent 81618A (single) or 81619A (dual) optical head interface module and operates with Agilent 8163A/B, 8164A/B, and 8166A/B lightwave mainframe series. Full control is available in 8163B, 8164B, and 8166B platforms. Remote operation is supported via GPIB and LAN interfaces. The connector interface palette accommodates connectorized, bare fiber, and open beam configurations.
