Agilent/Keysight 8168B,Agilent Keysight 8168B Tunable Laser Source

The Agilent/Keysight 8168B Tunable Laser Source delivers continuous wavelength tuning across the C-band with single-mode optical output for precise component characterization and optical system testing. True single-mode operation, narrow spectral linewidth, and high wavelength stability enable accurate measurements in telecommunications and photonics laboratories.

Technical Specifications

• Wavelength Range: 1500 nm to 1565 nm


• Wavelength Resolution: 0.001 nm at 1550 nm


• Wavelength Accuracy: ±0.1 nm maximum


• Wavelength Stability: <1 GHz (8168D variant)


• Wavelength Repeatability: ±0.1 nm (8168D variant)


• Spectral Linewidth: 100 kHz typical


• Optical Output Level: −3 dBm typical


• Fiber Type: 9/125 µm SMF


• Operating Mode: True single-mode


• Power Requirements: 100–240 Vrms ±10%, 260 VA maximum (North America: 90–130 Vac, 60 Hz ±3 Hz)


• Power Consumption: 110 W typical

Key Features

• Narrow 100 kHz linewidth supports precision spectroscopy and filter characterization


• High wavelength accuracy (±0.1 nm) and fine resolution (0.001 nm) enable component validation across the C-band


• GP-IB control with SCPI command support for automated test sequences


• RS232 serial interface (115200 bps maximum) and Centronics parallel printer output


• Option 022 connector variant with angled-contact configuration

Environmental & Physical

• Operating temperature: 0°C to +45°C; Storage: −40°C to +70°C


• Humidity: <95% RH non-condensing (0°C to 55°C)


• Operating altitude to 3000 m


• Dimensions (8168F): 145 mm H × 426 mm W × 545 mm D; Net weight 18 kg

Compatibility & Integration The 8168B integrates with Agilent 8163B mainframe systems supporting HP 8153A and Agilent 8163A/B series modules. Note: 8163B modules are incompatible with HP 8153A Lightwave Multimeters.