The Keysight 81635A is a dual-channel optical power sensor module designed for use with the 8163A/B, 8164A/B, and 8166A/B Lightwave mainframe families. Featuring dual InGaAs detectors, it covers a wavelength range of 800 nm to 1650 nm and provides high precision, stability, and fast measurement capability for optical component testing.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | None (controlled entirely via host mainframe GPIB, LAN, or USB) |
| Display | None (uses host mainframe display) |
Physical
| Parameter | Value |
|---|---|
| Power Supply | Derived from host mainframe |
Optical Performance Specifications
| Parameter | Value |
|---|---|
| Sensor Element Type | InGaAs (Indium Gallium Arsenide) |
| Number of Channels | 2 |
| Wavelength Range | 800 nm to 1650 nm |
| Power Measurement Range | -80 dBm to +10 dBm |
| Maximum Safe Input Power | +16 dBm |
Measurement & Timing Characteristics
| Parameter | Value |
|---|---|
| Averaging Time Range | 100 µs to 10 s |
| Minimum Logging Interval | 100 µs |
Physical Interface & Fiber Compatibility
| Parameter | Value |
|---|---|
| Optical Interface Adapter Compatibility | Keysight 81000xI series connector adapters (e.g., 81000FI, 81000KI, 81000VI) |
System Integration & Compatibility
| Parameter | Value |
|---|---|
| Host Mainframe Compatibility | Keysight / Agilent 8163A/B, 8164A/B, 8166A/B |
| Required Slot Width | 1 slot |
| Hot-Swappability Support | Supported |
Calibration
| Parameter | Value |
|---|---|
| Calibration Reference Power Level | -20 dBm (100 µW) |
| Calibration Reference Temperature | 23 °C ± 5 °C |
Interfaces
| Parameter | Value |
|---|---|
| Mainframe Backplane Interface | Proprietary Keysight 816x internal backplane connector |
Technology
InGaAs Optical Power Sensor
Applications
Optical power measurement, insertion loss testing, and multichannel optical component characterization
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