The Agilent/Keysight 81654A is a dual-wavelength Fabry-Perot laser source module for optical communication system testing. Operating at 1310 nm and 1550 nm, it delivers 1 mW output power with ±0.03 dB stability over 24 hours. The module integrates into the Agilent Lightwave Solution platform and pairs with optical power meter modules for insertion loss, optical return loss, and polarization-dependent loss measurements on broadband components and fiber.
Technical Specifications
• Laser Type: Fabry-Perot
• Wavelengths: 1310 nm and 1550 nm
• Output Power: 1 mW (< 0 dB or < 1.8 mW)
• CW Power Stability: ±0.03 dB (24 hours)
• Output Attenuation: 0 dB to 6 dB in 0.1 dB increments
• Internal Digital Modulation: 270 Hz, 330 Hz, 1 kHz, 2 kHz, or 200 Hz to 10 kHz (user-selectable), 50% duty cycle
• Coherence Control: Internal linewidth broadening
• Beam Waist Diameter: 9 µm
• Numerical Aperture: 0
• Maximum Permissible CW Output Power: 15.6/10 mW
• Laser Classification: Class 1 (IEC 60825-1, 2001); complies with 21 CFR 1040.10 per Laser Notice No. 50
– Key Features
• Insensitive to back reflections for stable measurements
• Short and long-term stabilization
• Adjustable output attenuation in 0.1 dB steps
• Front-panel laser enable with green LED indicator
• Built-in safety circuitry for fault detection
• Plug-in module format
– Typical Applications
• Insertion loss measurements
• Optical return loss measurements
• Polarization-dependent loss (PDL) characterization
• Broadband optical component and fiber testing
– Compatibility & Integration
Operates within 8163B, 8164B, and 8166B mainframes. Designed for paired operation with optical power meter modules within the Agilent Lightwave Solution platform.
