The HP 70950B Optical Spectrum Analyzer is a diffraction-grating based instrument for spectral measurements of optical power versus wavelength. It characterizes optical components, amplifiers, LEDs, DFB lasers, and Fabry-Perot lasers with high wavelength accuracy and resolution. The module installs in an HP 70004A display or HP 70001A mainframe and operates via optical spectrum analyzer keypad.
Technical Specifications
Wavelength Range: 600 to 1700 nm
Wavelength Accuracy:
• ±1 nm
• ±0.3 nm after user calibration
• ±0.05 nm after user calibration within 40 nm of calibration signal
Wavelength Linearity:
• ±0.05 nm for spans <40 nm
• ±0.02 nm (1530 nm to 1570 nm)
Wavelength Repeatability:
• ±0.005 nm
• ±0.001 nm (1 minute reproducibility)
Resolution Bandwidth (FWHM):
• <0.08 nm and 0.1 to 10 nm in 1,2,5 sequence
• FWHM of ±1 nm
• 36 dB characteristic (10 nm RBW, 900 to 1600 nm)
• 24 dB characteristic (10 nm RBW, 900 to 1000 nm)
Amplitude:
• Maximum displayed level: 10 dBm
• Flatness ±0.4 dB (≥2 dBm input, 1250 to 1600 nm)
• Flatness ±2 dB (≥2 dBm input, 900 to 1700 nm)
Sensitivity: –95 dBm, –85 dBm
Sweep Time: 40 nm/50 ms
Polarization Dependency: ±2.5 dB (600 to 1700 nm)
Operating Temperature: 0 to 55°C, <95% relative humidity
– Key Features
• Multimode fiber input (standard configuration)
• Wavelength repeatability of ±0.001 nm achievable
• Sub-0.08 nm resolution bandwidth capability
• 4/8-width module form factor
– Compatibility & Integration
Requires installation in HP 70004A display or HP 70001A mainframe. HP-IB communication through mainframe connector; default module address is 23.
