Phase-sensitive frequency conversion of quadrature modulated signals

ArticleinOptics Express 21(10):12713-27 · May 2013with2 Reads
Impact Factor: 3.49 · DOI: 10.1364/OE.21.012713 · Source: PubMed


    Two mechanisms that can make frequency conversion based on nonlinear mixing dependent on the phase of the input signal are identified. A novel phase-to-polarization converter that converts the orthogonal phase components of an input signal to two orthogonally polarized outputs is proposed. The operation of this scheme and a previously reported scheme at an increased symbol rate are simulated with semiconductor optical amplifiers (SOAs) as the nonlinear devices. Experimental results demonstrate the effectiveness of SOAs for nonlinear mixing over a wide range of wavelengths and difference frequencies and confirm the accuracy of the numerical model.