HP / Agilent 81633A Optical Power Sensor Module

The HP/Agilent 81633A is a single-channel optical power sensor module engineered for high-precision measurements across the near-infrared spectrum. Built on an InGaAs detector, this module delivers measurement accuracy of ±2.5% (1000 nm to 1630 nm) with exceptional linearity across a 100 dB dynamic range. It integrates directly into Agilent/HP/Keysight Lightwave Mainframes, providing SCPI-compatible control and multi-interface connectivity for laboratory and production testing environments.

– Technical Specifications

• Sensor Type: InGaAs
• Wavelength Range: 800 nm to 1700 nm
• Power Range: +10 dBm to −90 dBm
• Measurement Accuracy: ±2.5% (1000 nm to 1630 nm) at reference conditions
• Linearity (CW):
◦ +10 dBm to −70 dBm: <±0.015 dB ±2 pW
◦ +10 dBm to −60 dBm: <±0.02 dB ±20 pW
◦ +10 dBm to −90 dBm: <±0.015 dB ±2 pW
• Maximum Input Power: 0.01 W
• Channels: 1
• Dimensions: 8 × 6 × 4 in
• Weight: ~5 lbs

– Key Features

• 100 dB dynamic measurement range from +10 dBm to −90 dBm
• Sub-milliwatt accuracy across the C- and L-band windows
• SCPI command syntax compatible with 8164A, 8166A, and 8153A systems
• GPIB and RS232C interfaces for instrument control and data acquisition
• Parallel printer interface (Centronics) for direct documentation output

– Interfaces

• Programming: SCPI Standard
• Data Connectivity: GPIB, RS232C
• Optical Connector: PC interface (Agilent 81000xI Series optical connectors required, sold separately)
• Printer: Centronics parallel interface

– Compatibility & Integration

Designed for use with Agilent/HP/Keysight Lightwave Mainframes including the 8163A, 8164A, and 8166A series. Module integrates via proprietary bus interface into compatible lightwave measurement systems.