ADVANTEST Q8381 Optical Spectrum Analyzer 350-1750nm same AQ6315E CALIBRATED

The Advantest Q8381 Optical Spectrum Analyzer is a benchtop instrument engineered for precise optical signal analysis across the ultraviolet to mid-infrared spectrum. It delivers high-resolution measurement of optical components, transceivers, and complete systems in communications and networking environments. The combination of broad wavelength coverage, fast acquisition, and specialized pulse-light measurement capability makes it suitable for both laboratory characterization and production testing.

Technical Specifications

Wavelength Performance

• Operating range: 350 nm to 1750 nm


• Resolution: 100.0 pm


• Wavelength accuracy: ±0.5 nm (350–1750 nm)


• Wavelength linearity: ±0.02 nm (1510–1570 nm)


• Wavelength repeatability: ±0.005 nm Signal Measurement & Dynamic Range


• Power range: –85 dBm to +10 dBm (1.1–1.6 µm)


• Input sensitivity: –85 dBm


• Level measurement accuracy: ±1.5 dB


• Polarization dependence: ±0.1 dB or less


• Maximum input power: +10 dBm Measurement Speed


• Standard mode sweep: 0.8 seconds or less (200 nm span)


• Full measurement cycle: less than one second with linear or logarithmic scaling

Key Features

• Pulse light measurement function for low-level and discontinuous signals


• Power monitoring capability


• Automatic optimum measurement condition setting


• Automatic peak search


• Half-value width measurement


• Luminosity compensation display


• Side-mode suppression ratio (SMSR) measurement

Typical Applications Optical communications testing, component characterization, transceiver validation, and system-level optical signal analysis across UV and infrared wavelength bands.

Compatibility & Integration Benchtop configuration suitable for laboratory and production environments. Functionally equivalent to the AQ6315E across specified wavelength range.