Agilent HP 81633B / 86133A Optical Power Sensor for 8163A / 8164A

The Agilent HP 81633B / 86133A is a precision optical power sensor module for the 8163A, 8164A, and 8166 series mainframes. Built on an InGaAs sensor element, it delivers accurate power measurements across the near-infrared spectrum with ±2.5% uncertainty from 1000 nm to 1630 nm. The sensor handles power levels from +10 dBm to –90 dBm with exceptional linearity (±0.015 dB ± 0.2 pW) across +10 dBm to –70 dBm in the 1000–1630 nm band.

Return loss exceeds 55 dB, and noise remains below 2 pW peak-to-peak. Configurable averaging from 100 µs to 1 s, selectable display resolution as fine as 0.0001 dB/dBm, and high-speed data logging up to 20k values enable rapid characterization of optical signals in telecommunications and fiber optic networks.

Technical Specifications

• Sensor Type: InGaAs


• Wavelength Range: 800 nm to 1700 nm


• Power Range: +10 dBm to –90 dBm


• Linearity (CW): ±0.015 dB ± 0.2 pW (1000–1630 nm, +10 dBm to –70 dBm, 23 °C ±5 °C)


• Measurement Accuracy: ±2.5% (1000 nm to 1630 nm)


• Return Loss: >55 dB


• Noise: 55 dB) minimizes signal reflections


• Sub-picoWatt noise floor enables low-power measurements


• Fine resolution and wide dynamic range support both CW and pulsed optical characterization


• SCPI programming and GPIB/RS232C connectivity for integration into automated test systems

Typical Applications

• Optical transmitter and receiver power measurements


• Fiber optic component characterization


• Telecommunications network testing


• Data center optical link validation

Compatibility & Integration

• Compatible with Agilent 8163A/B, 8164A/B, and 8166A/B mainframes


• Accepts 81000xI connector interfaces for standard fiber types and bare fibers


• SCPI standard programming; GPIB and RS232C communication ports