Agilent/Keysight 70952B – Optical Spectrum Analyzer Module

The Keysight 70952B is a grating-based optical spectrum analyzer module engineered for the 70000 series modular measurement system. It delivers characterization of optical components, amplifiers, LEDs, DFB lasers, and Fabry-Perot lasers across multiple wavelength windows. The module achieves –95 dBm sensitivity with dynamic range to +10 dBm and sweeps 40 nm in 50 ms, enabling rapid measurement cycles in high-sensitivity applications.

Polarization insensitivity and configurable continuous-sweep operation reduce measurement time and mechanical wear.

Technical Specifications

Optical Performance

• Wavelength measurement ranges: 600–1700 nm, 900–1700 nm, 1250–1600 nm, or 1250–1600 nm with Option 002 built-in white light source


• Sensitivity: –95 dBm


• Maximum displayed level: +10 dBm


• Amplitude flatness (≥2 dBm input): ±0.4 dB


• Sweep speed: 40 nm in 50 ms Accuracy


• Amplitude accuracy (external photodetector): +0.1/–0.05 dB


• Amplitude accuracy (internal photodetector): +0.2/–0.1 dB


• Amplitude accuracy (O/E devices): +0.075/–0.025 dB


• Polarizer extinction ratio measurement: 0 to 30 dB Environmental


• Operating temperature: 0°C to 55°C


• Operating humidity: <95% non-condensing


• Stabilization: 1 hour continuous operation plus auto-align routine

Key Features

• 4/8-width plug-in module


• Grating-based analyzer architecture


• Advanced measurement programs updated after each sweep


• Supplied optical spectrum analyzer keypad


• Color display capability with compatible mainframes

Typical Applications

• LED characterization and testing


• DFB and Fabry-Perot laser measurement


• Optical component validation


• Optical amplifier analysis

Compatibility & Integration The 70952B requires installation into either an HP 70004A or HP 70001A mainframe. Optional configurations include programmable current source (Option 001), built-in white light source (Option 002), DWDM component test kit (Option 003), enhanced dynamic range performance (Option 122), and rackmount kit (1CM).