Agilent/Keysight 81656A,Tunable Laser Source
The Agilent/Keysight 81656A is a plug-in module designed for the 8164B lightwave measurement system. This module is a compact laser diode controller, ideal for controlling and stabilizing the output of laser diodes in various optical test and measurement applications. It provides precise current and temperature control, ensuring stable and reliable laser operation.
- Model
- Agilent / Keysight 81656A
- Calibration
- Available on request
- Price
- $2,899
- Status
- In stock
- RFQ ref
- 81656A
This unit
The Keysight 81656A is a 1550 nm Fabry-Perot laser source module engineered for optical component characterization within the 8164B lightwave measurement system. This single-wavelength source delivers stabilized output with exceptional insensitivity to back reflections, making it ideal for precision measurements of insertion loss, optical return loss, and PDL across broadband components and fiber-optic assemblies.
Technical Specifications
- Wavelength: 1550 nm ±15 nm
- Laser Type: Fabry-Perot Laser Diode
- Output Power: >+13 dBm (20 mW)
- Spectral Bandwidth: <7.5 nm
- Fiber Output: Standard Single-Mode 9/125 µm
- CW Power Stability (15 min): <±0.005 dB
- Back Reflection Sensitivity: Insensitive
- Output Attenuation Range: 0 dB to 6 dB in 0.1 dB steps
- Operating Temperature: 0°C to +45°C
- Humidity: Non-condensing
Key Features
- Internal digital modulation modes selectable from 270 Hz, 330 Hz, 1 kHz, 2 kHz, or user-defined 200 Hz to 10 kHz
- All outputs pulse-shaped with 50% duty cycle
- Internal coherence control for linewidth broadening
- Short-term and long-term output stabilization
- Compact plug-in module format: 75 mm × 32 mm × 335 mm; 0.5 kg
Typical Applications
- Insertion loss measurements of broadband optical components
- Optical return loss characterization
- Polarization-dependent loss (PDL) testing
- Single-mode fiber-optic system verification
Compatibility & Integration Designed as a plug-in module for the Keysight 8164B Lightwave Measurement System. Compatible with Keysight 8163A/B, 8164A/B, and 8166A/B mainframes. Laser safety classification: Class IIIb (USA, 21 CFR 1040.10) and Class 3A (International, IEC 60825-1).
Agilent / Keysight 81656A — Repair & Calibration Service
Aumictech offers NIST-traceable calibration and repair for the Agilent / Keysight 81656A. Calibration covers wavelength accuracy at 5 or more points across the full tuning range, mode-hop-free range, output power flatness, linewidth, and side-mode suppression ratio (SMSR). All calibrations ship with a NIST-traceable certificate. Turnaround is typically 1–3 business days after receipt.
Common Agilent / Keysight 81656A faults: output power drift, mode hops, fiber pigtail connector damage, wavelength inaccuracy. Common faults include output power drift after extended use, mode hops at specific wavelengths, and fiber pigtail connector damage. Full alignment and piezo calibration typically restore performance to spec.
Agilent / Keysight 81656A price
This Agilent / Keysight 81656A is listed at $2,899. Calibration is available separately from $450. Contact us for volume pricing or if you need multiple units.
Agilent / Keysight 81656A calibration cost
NIST-traceable calibration for the Agilent / Keysight 81656A is $450 (standard — pass/fail certificate and calibration sticker) or $650 (full measured data at every test point, reference standards documented, traceability chain included). Calibration for this instrument covers wavelength accuracy at 5 or more points across the full tuning range, mode-hop-free range, output power flatness, linewidth, and side-mode suppression ratio (SMSR). Turnaround is 1 to 3 business days after receipt. See full calibration details →
