Degradation of the frequency response of photodiodes in measurements of strong optical signals
DOI:
https://doi.org/10.37537/rev.elektron.1.2.23.2017Keywords:
PIN photodiode, Detector bandwidth, Phase ResponseAbstract
In this paper we present measurements that reveal changes in the frequency response of a PIN-type photodetector with the increase of the intensity of the light reaching the detector. In particular, two effects are observed at high illumination levels: the bandwidth of the detector decreases and the phase response is modified. For low intensities the bandwidth follows a power law with exponent -1 with the average current of the photodetector, but at high illumination the exponent tends to -0.5.Downloads
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