An Amplitude Modulator For Digital Communications

by J. A. Davila-Pintle et al. AZojomo, 2 May 2006 By employing chemical bath deposition, polycrystalline thin films of CdS were grown on glass substrates. During the process of growth relative volumes of nitrate of erbium penta-hydrate (Er(NO₃)₃5H₂O) were added in aqueous solution of CdS in order to obtain different levels of doping. The samples obtained by this method were electrically and optically characterized determining the dark conductivity, carrier density, and the photoconductivity in the 590 to 451 nm range respectively. Finally the optimal sample with better electrical and optical characteristics was chosen to build an amplitude modulator for digital communications. Read more