Advantest Q82215 – Optical Sensor Head

The Advantest Q82215 Optical Sensor Head is a precision germanium photodiode module engineered for high-accuracy optical power measurement in fiber optic systems. It delivers sub-microwatt sensitivity across the 800 nm to 1750 nm band, with measurement accuracy of 6% and exceptional noise performance at -94 dBm. The single-channel design accommodates FC, MU, SC, and ST connectors, enabling direct integration with compatible Advantest optical power meters for telecommunications, R&D, and manufacturing test environments requiring deterministic optical sensing.

Technical Specifications

• Sensor Type: Germanium (Ge) photodiode


• Wavelength Range: 800 nm to 1750 nm


• Measurement Range: 0.001 µW to 0.01 W


• Noise Level: -94 dBm (maximum sensitivity)


• Measurement Accuracy: 6%


• Calibration Wavelength: 1550 nm


• Polarization Dependence: Low


• Connector Types: FC, MU, SC, ST


• Operating Temperature: 0 to +40°C, RH ≤85%


• Storage Temperature: -25 to +70°C


• Dimensions: 10 × 8 × 8 in


• Weight: 5 lbs

Key Features

• High sensitivity reaching -94 dBm noise floor for sub-microwatt power detection


• Broad spectral response from 800 nm to 1750 nm covering near-infrared and short-wavelength infrared regions


• Low polarization dependence ensures measurement consistency independent of fiber orientation


• Factory calibration at 1550 nm standard telecom wavelength


• Multiple connector options (FC, MU, SC, ST) accommodate diverse fiber jumper configurations


• Compact module form factor with proprietary interface for streamlined system integration

Typical Applications

• Optical power and backreflection characterization in single-mode and multimode fiber networks


• Component testing in telecom infrastructure development and qualification


• Research-grade optical measurements requiring sensitivity below -90 dBm


• Manufacturing burn-in and acceptance testing of fiber-coupled optical systems

Compatibility & Integration The Q82215 integrates directly with the Advantest Q8221 optical power meter. Related sensor head options include the Q82214 and Q82216 modules, permitting wavelength-optimized sensor selection within a unified measurement platform.