11 May 2016 Wide dynamic logarithmic InGaAs sensor suitable for eye-safe active imaging
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In this paper, we present a simple method to analyze the injection efficiency of the photodiode interface circuit under fast shuttering conditions for active Imaging applications. This simple model has been inspired from the companion model for reactive elements largely used in CAD. In this paper, we demonstrate that traditional CTIA photodiode interface is not adequate for active imaging where fast and precise shuttering operation is necessary. Afterwards we present a direct amplification based photodiode interface which can provide an accurate and fast shuttering operation on photodiode. These considerations have been used in NIT's newly developed ROIC and corresponding SWIR sensors both in VGA 15um pitch (NSC1201) and also in QVGA 25um pitch (NSC1401).
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Yang Ni, Yang Ni, Christian Bouvier, Christian Bouvier, Bogdan Arion, Bogdan Arion, Vincent Noguier, Vincent Noguier, "Wide dynamic logarithmic InGaAs sensor suitable for eye-safe active imaging", Proc. SPIE 9861, Thermosense: Thermal Infrared Applications XXXVIII, 986111 (11 May 2016); doi: 10.1117/12.2224079; https://doi.org/10.1117/12.2224079

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