The HP/Agilent 81662A is a DFB laser source module delivering stable, precise optical signals for telecommunications and photonics testing. Operating at 1557.36 nm with +10 dBm output power, this module excels in optical amplifier characterization and DWDM system validation. It integrates into Agilent’s Lightwave Solution Platform via standard 816xA/B mainframes, offering flexible, scalable test configurations with full GPIB and keypad control.
Technical Specifications
• Wavelength: 1557.36 nm
• Output Power: +10 dBm (10 mW)
• Power Stability: 0.003 dB
• Wavelength Stability: ±0.002 nm
• Fine-Tuning Range: ±850 pm
• Output Fiber: Polarization Maintaining Fiber (Panda PMF 9/125 µm)
• Output Connectors: APC, ASC, DIN 47265/4108
• Laser Classification: Class 1M (IEC 60825-1:2001)
• Dimensions: 2.8 × 1.3 × 13.2 inches
– Key Features
• Built-in coherence control for linewidth broadening
• Integrated isolator for signal integrity
• Output attenuation: 0 dB to 6 dB in 0.1 dB steps
• Digital modulation: preset modes at 270 Hz, 330 Hz, 1 kHz, 2 kHz; user-selectable 200 Hz to 10 kHz with 50% duty cycle pulse shaping
• Polarization-maintaining output for waveguide and integrated-optic devices
– Typical Applications
• Optical amplifier testing (EDFA, TDFA, semiconductor, Raman)
• DWDM transmission system characterization
• High-stability signal generation for precision optical measurements
– Compatibility & Integration
Modular design fits Agilent 8163A/B, 8164A/B, and 8166A/B mainframes. Full control via keypad or GPIB interface. Supports multi-channel configurations up to 17 modules in the 8166 Multichannel System.

















