UWB Doublet Generation Employing Cross-Phase Modulation in a Semiconductor Optical Amplifier Mach Zehnder Interferometer

In this paper, a novel method to generate ultrawideband (UWB) doublets is proposed and experimentally demonstrated, which is based on exploiting the cross-phase modulation in a semiconductor optical amplifier (SOA). The key component is an integrated SOA Mach-Zehnder interferometer pumped with an optical carrier modulated by a Gaussian pulse. The transfer function of the nonlinear conversion process leads to the generation of UWB doublet pulses by tuning the SOA currents to different values.This work was supported in part by national projects TEC2010-21303-C04-02 and TEC2011-26642 under the responsibility of the Ministerio de Economia y Competitividad, by projects FEDER UPVOV08-3E-008 and UPVOV10-3E-492, and by the Generalitat Valenciana under the Research Excellency Award Program GVA PROMETEO 2013/012 Next Generation Microwave Photonic technologies. Corresponding author: J. Mora (e-mail: jmalmer@iteam.upv.es).Moreno, V.; Rius Mercado, M.; Mora Almerich, J.; Muriel, M.; Capmany Francoy, J. (2013). UWB Doublet Generation Employing Cross-Phase Modulation in a Semiconductor Optical Amplifier Mach Zehnder Interferometer. IEEE Photonics Journal. 5(6):7101106-7101106. https://doi.org/10.1109/JPHOT.2013.2288295710110671011065