81655A Agilent Agilent Point Source Laser Source Module

81655A Agilent Agilent Point Source Laser Source Module

Main features：

• Wavelength Range: 700~1700nm (covers O/E/S/C/L bands)
• Dynamic Range: +3dBm to -90dBm with 0.001dB resolution
• Calibration Accuracy: ±0.02dB (supports user-defined calibration)
• Sampling Rate: 10μs high-speed sampling for transient power fluctuation capture
• Data Analysis: Built-in trend chart/histogram with BER estimation capability
• Automation: Compatible with Keysight mainframe architecture, SCPI command control supported
• Long-term Stability: <0.01dB power fluctuation (ideal for aging tests)
• Noise Performance: Low-noise design ensures accurate weak signal measurement

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81655A Agilent Agilent Point Source Laser Source Module

Overview

The Keysight 81655A is a high-precision, high-sensitivity optical power meter module designed for optical communications, fiber sensing, and photonic device testing. With its ultra-wide dynamic range, low-noise measurement capability, and automated test support, it serves as an ideal solution for R&D labs, production testing, and system validation. Compatible with Keysight 816x series mainframes, this module can be flexibly integrated into existing test systems and supports SCPI commands and automated scripting for significantly improved testing efficiency.

Detailed Specifications (Table)

Parameter Category	Technical Specifications
Wavelength Range	700 ~ 1700 nm (covers O/E/S/C/L bands)
Power Measurement Range	+3 dBm ~ -90 dBm (auto-ranging supported)
Resolution	0.001 dB (high-precision mode)
Calibration Accuracy	±0.02 dB (typical, supports user calibration)
Sampling Rate	10 μs (high-speed mode for transient fluctuation capture)
Long-Term Stability	<0.01 dB (24-hour continuous testing)
Noise Level	<-155 dB/Hz (low-noise design)
Interface Compatibility	Keysight 816x series mainframes, supports SCPI/LabVIEW/Python control
Typical Applications	Optical module production testing, EDFA gain measurement, laser aging tests, passive device IL characterization

Key Advantages

✔ Ultra-High Sensitivity: Detects weak signals down to -90 dBm, suitable for quantum optics and low-power sensing.
✔ Multi-Wavelength Support: Covers visible to infrared wavelengths for diverse testing scenarios.
✔ Automation Integration: Supports SCPI commands and third-party software (e.g., Python, LabVIEW) for streamlined automated workflows.
✔ Stable & Reliable: Long-term power fluctuation <0.01 dB ensures repeatable measurement accuracy.

Selection Guide

Basic Testing: Single-module configuration for R&D labs or small-batch testing.
Mass Production: Optional multi-channel configurations (e.g., 81655A-4xx) enable parallel testing for higher throughput.
Special Requirements: Custom calibration available for unique light sources or nonlinear optics testing.