Advantest Q82018A – Advantest Q82018A Optical Sensor

The Advantest Q82018A is an InGaAs PIN photodiode optical sensor engineered for precision optical power measurement across the long-wavelength infrared spectrum. It delivers sensitivity down to -60 dBm at 1.3 µm, with 0.01 dB power resolution and excellent linearity across a 4-1/2 digit dynamic range. This sensor head integrates with the complete Advantest TQ82000 series optical power meter platform.

Technical Specifications

• Wavelength Range: 0.8 µm to 1.65 µm


• Sensor Type: InGaAs PIN Photodiode


• Measurement Range: -60 dBm to 0 dBm


• Power Resolution: 0.01 dB


• Power Levels: 0.001 µW to 0.001 W


• Sensitivity: -60 dBm (at 1.3 µm)


• Accuracy: ±5%


• Linearity: Excellent


• Dynamic Range: 4-1/2 digits

Key Features

• High sensitivity optical measurements across near-infrared and short-wavelength infrared bands


• ±5% measurement accuracy with 0.01 dB resolution ensures precise characterization of optical power levels


• Excellent linearity performance critical for repeatable, quantifiable results in optical system validation


• Wide 60 dB dynamic measurement range accommodates both weak signals and higher-power optical channels

Typical Applications

• Optical communication system validation and component characterization


• Long-wavelength optical power verification (0.8–1.65 µm band)


• Fiber-optic and integrated photonic device testing


• Optical signal path loss and attenuation measurement

Compatibility & Integration The Q82018A sensor head connects directly to the Advantest optical power meter series: TQ8210, TQ82015, TQ82014A, TQ82017A, TQ82021A, TQ82024, and other TQ82000 series instruments. Operation manual available from Advantest. Connector type specifications available through Advantest sales.