The HP/Agilent 71451B Optical Spectrum Analyzer is a diffraction-grating-based instrument for high-resolution spectral measurement and characterization across the visible to near-infrared spectrum. Built around the HP 70951B module with a unique double-pass monochromator design, it delivers precise wavelength and power analysis for optical components, amplifiers, and lasers. The instrument combines exceptional spectral accuracy with low polarization dependency, making it essential for fiber optic system development, component validation, and optical network testing.
Technical Specifications
• Wavelength Range: 600 nm to 1700 nm
• Span Range: 0.2 nm to full range (continuously variable)
• Absolute Wavelength Accuracy (post-calibration): ±0.3 nm
• Resolution Bandwidth (FWHM): 0.1 nm to 10 nm variable; characteristic setting <0.08 nm
• Resolution Accuracy: ±0.5 nm (settings ≥0.5 nm, 1250–1600 nm); ±0.2 nm corrected bandwidth (noise markers, 1250–1600 nm)
• Sensitivity: −95 dBm
• Maximum Displayed Level: +10 dBm
• Dynamic Range: 60 dB (characteristic at 1 MΩ)
• Operating Temperature: 0°C to 55°C
• Relative Humidity: <95% (non-condensing)
– Key Features
• Double-pass monochromator for superior spectral purity
• Variable resolution bandwidth enables optimization between sensitivity and spectral detail
• Low polarization dependency for consistent measurement performance
• Modulation and stimulus-response analysis capabilities
• Integrated photodetector with configurable sensitivity
– Typical Applications
• LED, DFB laser, and Fabry-Perot laser characterization
• EDFA gain and noise figure assessment
• Spectral power distribution and wavelength verification
• Polarization dependent loss measurements
• Optical component stimulus-response evaluation
– Compatibility & Integration
The 71451B integrates the HP 70951B module with dedicated MONOCHROMATOR INPUT and OUTPUT connectors. External photodetector modules are supported with documented accuracy specifications (+0.075/−0.025 dB for O/E Devices; +0.2/−0.1 dB for internal detectors).
