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Proceedings Paper

Signal correlation methods for photodetector noise characterization
Author(s): M. Chojnowska; K. Achtenberg; J. Mikołajczyk
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Paper Abstract

Noise parameters of a photodetector have a significant role in many science and life activities, e.g. gas spectroscopy, optical communication, objects detection and recognition, construction of laser rangefinders. However, applied noise measurement methods are not so efficient to study new generation of infrared radiation detectors. The paper presents performance comparison of two correlation methods of photodetector signal to determine its noise. These methods apply the signal correlation of a time series with itself (autocorrelation method - ACM) and the similarity between two time series (cross-correlation method with two-channel signal readout - CCM). Both methods were analyzed using a designed simulator (MATLAB/Simulink). It makes it possible to design a special system consisted of electronic block of a twochannel signal readout and signal processing unit. The verification of this setup performances for noise measurement was performed using some low-noise resistors with well-defined resistances. Finally, the setup was also used to measure noise spectral density of MCT detector.

Paper Details

Date Published: 14 August 2018
PDF: 6 pages
Proc. SPIE 10830, 13th Conference on Integrated Optics: Sensors, Sensing Structures, and Methods, 1083003 (14 August 2018); doi: 10.1117/12.2324878
Show Author Affiliations
M. Chojnowska, Military Univ. of Technology (Poland)
K. Achtenberg, Military Univ. of Technology (Poland)
J. Mikołajczyk, Military Univ. of Technology (Poland)

Published in SPIE Proceedings Vol. 10830:
13th Conference on Integrated Optics: Sensors, Sensing Structures, and Methods
Przemyslaw Struk; Tadeusz Pustelny, Editor(s)

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