The HP/Agilent 81652A is a Fabry-Perot laser source module engineered for precision optical testing and measurement across telecommunications, research, and development applications. Installed into compatible Agilent lightwave systems, this single-mode fiber module delivers stable, adjustable-power laser output optimized for insertion loss, optical return loss, and PDL measurements of broadband optical components.
Technical Specifications
• Laser Type: Fabry-Perot laser diode
• Center Wavelength: 1550 nm ± 15 nm
• Spectral Bandwidth (rms): 0 dBm (1 mW)
• CW Power Stability (Short Term, 15 min): < ±0.005 dB typ.
• CW Power Stability (Long Term, 24 h): ±0.03 dB typ.
• Attenuation Range: 0 dB to 6 dB in 0.1 dB steps
• Fiber Type: Single-mode 9/125 µm
• Optical Interface: PC connector, standard Agilent format (connectors sold separately)
• Warm-up Time: 60 minutes; 20 minutes if previously stored at same temperature
• Dimensions: 75 mm H × 32 mm W × 335 mm D
• Weight: 0.5 kg
• Laser Safety Classification (USA): Class I per 21 CFR 1040.10 (1995)
– Key Features
• Internal digital modulation selectable at 270 Hz, 330 Hz, 1 kHz, 2 kHz, or freely from 200 Hz to 10 kHz with 50% duty cycle pulse shaping
• Insensitive to back reflections—critical for broadband optical measurements
• Stabilized performance for both short- and long-term testing applications
• Improved coherence control for controlled linewidth broadening
• Fine-grain output power attenuation for precise measurement configuration
– Compatibility & Integration
Installs directly into the Agilent 8163A/B Lightwave Multimeter, Agilent 8164A/B Lightwave Measurement System, or Agilent 8166A/B Lightwave Multichannel System mainframes. Requires PC-interface straight output connectors.
