Intermodulation distortion system theory of the three-tone small signal input laser diode with non-linear optoelectronic feedback Doǧrusal olmayan optoelektroni̇k geri̇ beslemeli̇ lazer di̇yodun üç ton küçük i̇ş̧aret gi̇ri̇şli̇ i̇ntermodulasyon di̇storsi̇yon si̇stem teori̇si̇


Yildirim R.

Journal of the Faculty of Engineering and Architecture of Gazi University, vol.22, no.2, pp.417-430, 2007 (Journal Indexed in SCI Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 22 Issue: 2
  • Publication Date: 2007
  • Title of Journal : Journal of the Faculty of Engineering and Architecture of Gazi University
  • Page Numbers: pp.417-430

Abstract

In this study, Volteira power series expansion is performed successfully in order to analyse the distortion for three tone small signal with non-linear optoelectronic feedback laser diode system input. The frequency components which are used in intermodulation distortion (IMD) applications are selected in the analysis. These are (ω 1-ω 2), (ω 1+ω 2), (ω 1+ω 3), (ω 1-ω 3), (ω 2- ω 3), (ω 2+ω 3), (ω 1+ω 2ω 3)(ω 1+ω 2-ω 3), (-ω 1+ω 2+ω 3)and (ω 1- ω 2+ω 3) During the calculation of the amplitudes of these selected frequency components, system approach is performed and series expansion of the laser diode rate equations is obtained up to third order degree. From the Volterra operator, H 1, H 2 and H 3 Volterra kernels are computed. Then the transfer functions of the IMD frequency components are obtained. The amplitudes of the IMD frequency components is found with respect to feedback constant (K) and time delay ( t o ). At the end of the analysis asymmetry is determined in some of the IMD frequency components.