With high quantum efficiency, low capacitance, low dark current and wide bandwidth, InGaAs detectors has lots of applications in optical radiation measurement, optical communication and remote sensing. This paper using a spectral comparison facility based on supercontinuum white light source and double monochromator, in which a reference InGaAs trap detector is used for the relative spectral responsivity calibration of a planar InGaAs detector. Calibration of the same detectors using tungsten lamp as light source has also been done and shows a good consistency, which proves the feasibility of relative spectral responsivity calibration using supercontinuum white light sources.
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