%0 Journal Article %T Experimental analysis of all-optical 4-ASK signal generation through parametric amplification %A Marconi %A J. D. %A Abbade %A M. L. F. %A Costa %A A. L. A. %A Moschim %A E. %A Fragnito %A H. L. %J Journal of Microwaves, Optoelectronics and Electromagnetic Applications %D 2012 %I Brazilian Microwave and Optoelectronics Society and Brazilian Society of Electromagnetism %R 10.1590/S2179-10742012000100015 %X we present experimental results concerning a new alloptical technique that multiplexes two binary signals into a quaternary one (4-ask). the technique is based on parametric amplification. values of the quaternary levels obtained experimentally, as a function of the extinction ratios of the binary input signals, show a rather good agreement with the simulated and the analytical results. the generated 4-ask signals were propagated through 75 km of standard single-mode fiber and experienced eye penalties of only 0.5 db. this indicates the robustness of the technique for practical applications in metropolitan area networks. %K optical packets %K optical signal processing %K parametric amplification %K quaternary amplitude-shift keying signal. %U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S2179-10742012000100015&lng=en&nrm=iso&tlng=en