HP / Agilent 71452B Optical Spectrum Analyzer Module

The HP/Agilent 71452B Optical Spectrum Analyzer Module is a high-resolution instrument for spectral measurements of optical power versus wavelength across the 600 to 1700 nm range. Operating as a plug-in module within the HP 70000 series Modular Measurement System, it delivers wavelength accuracy of ±1 nm (±0.2 nm after user calibration) and minimum resolution of 0.08 nm. The module characterizes optical components, amplifiers, lasers, and optical networks with typical sensitivity of -95 dBm across the 1250 to 1600 nm band and dynamic range reaching -58 dB maximum. Its continuously variable span from 0.2 nm to full range supports both broadband spectral analysis and high-resolution line characterization. Sweep performance of 40 nm in 50 ms enables rapid measurements. Wavelength repeatability of ±0.005 nm and span linearity of ±0.02 nm (1530–1570 nm) ensure precision in DWDM system development, telecom labs, component verification, and optical network maintenance. The module accepts input power from -10 dBm to +30 dBm, with maximum measurable power before compression at +10 dBm. Internal photodetector accuracy of +0.2/–0.1 dB and flatness of ±0.4 dB (for ≥2 dBm input) deliver reliable amplitude measurements across the primary telecom bands.

– Technical Specifications

• Wavelength Range: 600 to 1700 nm
• Span Range: 0.2 nm to full range; zero span capable
• Resolution Bandwidth (RBW FWHM): <0.08 nm and 0.1 to 10 nm (1,2,5 sequence)
• Minimum Resolution: 0.08 nm
• Maximum Resolution: 10 nm
• Wavelength Accuracy: ±1 nm; ±0.2 nm after user calibration
• Wavelength Repeatability: ±0.005 nm
• Span Linearity: ±0.05 nm (<40 nm spans); ±0.02 nm (1530–1570 nm)
• Dynamic Range: -50 dB at ±1 nm from center; -58 dB maximum
• Sensitivity: -95 dBm typical (1250–1600 nm, internal photodetector)
• Flatness: ±0.4 dB typical (≥2 dBm input, 1250–1600 nm)
• Polarization Dependency: ±2.5 dB (600–1700 nm)
• Input Power Range: -10 dBm to +30 dBm
• Maximum Power Before Compression: +10 dBm
• Accuracy (Internal Photodetector): +0.2/–0.1 dB
• Sweep Time: 40 nm in 50 ms
• Polarizer Extinction Ratio Range: 0 to 30 dB

– Key Features

• Optical input via MONOCHROMATOR INPUT connector
• User calibration capability improves wavelength and amplitude accuracy
• Optional EDFA measurement personality cards (Options 51, 52, 53)
• Temperature stable after 1 hour continuous operation and auto-align routine

– Operating Conditions

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

– Compatibility & Integration

• Part of HP 70000 series Modular Measurement System (MMS)
• Requires HP 70004A or HP 70001A mainframe
• 4/8-width module configuration
• Includes 70004A color display module and 70952B optical spectrum analyzer module
• Supplied with optical spectrum analyzer keypad