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Semiconductor Physics, Quantum Electronics & Optoelectronics. 2014. V. 17, N 4. P. 421-424.
Studies on the optical fluxes attenuation process
in optoelectronic systems Kharkiv National University of Radio Electronics, 61166 Kharkiv, Ukraine E-mail: strelkova_t@ukr.net Abstract. In this paper, the statistical characteristics of output signals in optoelectronic systems with a limited dynamic range are considered. The experimental results concerning noises probability densities are adduced. It has been shown that the law of output signal distribution depends on attenuation factor of neutral filter used for matching the dynamic range. The output signal distribution law is well approximated by the steady distributions with characterization index 0 ⟨ α ⟨ 2. Using the stable law as a limiting one allows to avoid the contradiction between experimental data and common mathematical models of signals based on the Poisson and Gaussian statistics and to reduce weak signals detection errors in optoelectronic systems with implementation of neutral filters for matching the dynamic range. Keywords:optical signal detection, optical attenuator, optical filter, photodetector, noise measurement, stochastic process, statistical analysis, analysis of variance, statistical distribution. Manuscript received 00.00.14; revised version received 05.09.14; accepted for publication 00.00.14; published online 00.00.14.
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