The Agilent/Keysight 71450B is a diffraction-grating-based optical spectrum analyzer for precise spectral characterization across 600 to 1700 nm. It measures optical power versus wavelength with sensitivity to -90 dBm and delivers 60 dB dynamic range, enabling detailed analysis of optical components, amplifiers, LEDs, DFB lasers, and Fabry-Perot lasers.
Technical Specifications
Wavelength Range: 600 to 1700 nm
Sensitivity & Dynamic Range
• Sensitivity: -90 dBm
• Dynamic range: 60 dB
• Maximum input power (monochromator): +30 dBm
• Maximum photodetector input level: +20 dBm
• Largest measurable power before compression: +10 dBm
Wavelength Accuracy
• Absolute accuracy: ±1 nm
• After user calibration: ±0.3 nm
• After calibration within ±0.05 nm of cal signal: ±0.2 nm
• Span linearity (<40 nm spans): ±0.05 nm
• Span linearity (1530–1570 nm): ±0.02 nm
• Reproducibility (1 minute): ±0.005 nm
• Reproducibility after calibration (1 minute): ±0.001 nm
• Tuning repeatability: ±0.005 nm
• Settability: ±0.005 nm
Resolution Bandwidth
• FWHM: <0.08 nm and 0.1 to 10 nm in 1,2,5 sequence
• <0.08 nm setting: 0.065 nm ±15%
• Resolution accuracy (≥0.5 nm, 1250–1600 nm): ±20%
• Resolution accuracy (0.1–10 nm, 600–1700 nm): ±30%
• Corrected bandwidth accuracy for noise markers (≥0.5 nm, 1250–1600 nm): ±3%
• Corrected bandwidth accuracy (0.2 nm, 1250–1600 nm): ±5%
Environmental
• Operating temperature: 0° to 55° C
• Relative humidity: <95%
• Stabilization: 1 hour continuous operation plus auto-align routine
Physical
• Dimensions: 24 × 20 × 16 in
• Weight: Approximately 35–50 lbs
– Key Features
• Unique double-pass monochromator architecture
• Automatic spectral width measurement at -3 dB, -20 dB, or user-defined levels
• Peak power determination and side-mode suppression ratio analysis
• DFB stop-band characterization
• Auto-align routine for sustained amplitude accuracy
• Three instrument modes: preselector, stimulus response, and photodetector test
– Typical Applications
• Optical component characterization (couplers, switches, filters, fibers)
• Laser source spectral analysis and quality assessment
• LED spectral profiling
• Stimulus-response measurements for optical devices
– Compatibility & Integration
Integrates the HP 70950B module for core measurement functionality. Accommodates HP 71451B photodetector for optimized performance across the operating wavelength range.
