Agilent / Keysight 86141B Benchtop Flexible Optical Spectrum Analyzer

The Agilent/Keysight 86141B is a benchtop optical spectrum analyzer engineered for precise spectral characterization across the visible-to-infrared band. It delivers wavelength accuracy to ±0.025 nm (1510–1570 nm) and selectable resolution bandwidth from 0.06 nm to 10 nm FWHM, making it suited for DWDM system validation, laser performance assessment, and fiber component characterization in telecommunications development and manufacturing environments.

Technical Specifications

Wavelength Range: 600 nm to 1700 nm Resolution Bandwidth (RBW): 0.06, 0.07, 0.1, 0.2, 0.5, 1, 2, 5, 10 nm (FWHM, 3 dB) Wavelength Accuracy:

• ±0.025 nm (1510–1570 nm) after calibration with internal reference


• ±0.035 nm (1570–1640 nm) after calibration with internal reference


• ±0.05 nm after user calibration within ±40 nm of calibration signal


• ±0.2 nm after user calibration over full wavelength range


• ±0.5 nm (absolute, factory calibration cycle 2 years)


• ±0.003 nm reproducibility (≤1 min) and tuning repeatability Amplitude Specifications:


• Maximum measurement power: +15 dBm per channel, +30 dBm total (1525–1700 nm and other ranges)


• Maximum safe power: +20 dBm or +30 dBm total


• Scale fidelity: ±0.05 dB (fixed reference, characteristic); ±0.07 dB (variable reference or autorange off)


• Amplitude stability: ±0.01 dB (1 minute at 1310 nm and 1550 nm)


• Flatness: ±0.2 dB (1290–1330 nm)


• Polarization dependence: ±0.25 dB at 1310 nm (resolution ≥0.2 nm, room temperature, 9/125 µm fiber) Dynamic Range:


• 1250–1610 nm (0.1 nm resolution, chop mode on): –70 dB


• 1550 nm at ±0.8 nm (±100 GHz): –60 dB


• 1550 nm at ±0.5 nm (±62.5 GHz): –58 dB typical


• 1550 nm at ±0.2 nm (±25 GHz): –40 dB typical Sweep Characteristics:


• Maximum sweep rate: 40 nm/50 ms


• Maximum sampling rate (zero span): 50 µs/trace point typical


• Sweep cycle time: <180 ms (50 nm span, auto zero off); 35 dB