Analysis of the nonlinear optical switching in a Sagnac interferometer with non-instantaneous Kerr effect

A new modulation method to generate all-optical logic gates in an AOTF

“…toptica.com/products/terahertz_generation; Wake et al 1996;Fice et al 2012;Islam 2012;Bhatti et al 2000;Lima Júnior et al 2009;Ferreira et al 2012Ferreira et al , 2009Alvarado et al 1993;Novitsky 2013;Sobrinho et al 2002Sobrinho et al , 2008Tamai et al 2009;Huiszoon et al 2009;Onaka et al 2008;Veeriah et al 2007;Katrasnik et al 2010;Gupta et al 2012;Sabóia and Ferreira 2009;Mazzali and Fragnito 1998;Sobrinho and Sombra 2002;Tran 1997;Jung et al 2005;Yariv and Yeh 1984;Xu and Stroud 1992;Xie et al 2013;Sobrinho 2002;Song et al 2014;Mantsevich 2015). Information technology and high, medium or low capacity transmission systems can be potentially improved by the incorporation of all-optical devices.…”

“…This D-fiber antenna is used to phase modulate the light wave with a given receiving RF electrical signal (Bhatti et al 2000). In the last few years, many works on nonlinear switching (Lima Júnior et al 2009;Ferreira et al 2012;Alvarado and Agrell 1993;Novitsky 2013) have shown an excellent efficiency by using modulation methods (Alvarado and Agrell 1993;Sobrinho et al 2008;Ferreira et al 2009;Tamai et al 2009;Huiszoon et al 2009) in all-optical digital signal processing.…”

“…Additionally, several studies have addressed also the issue of relaxing Kerr nonlinearity (Ferreira et al 2012;Novitsky 2013).…”

PAM–ASK optical logic gates in an optical fiber Sagnac interferometer

“…Such optical component has attracted considerable attention in recent researches [2][3][4][5]7,[19][20][21][22][23][24][25][26][27][28][29][30][34][35][36] assisting the study fields and research lines aforementioned, as well as other additional lines of research. A nonlinear Sagnac interferometer is a very stable and extremely versatile optical component, which was initially proposed by Doran act as a "bit" of fundamental datum in ultra-fast optical processes [2,3].…”

“…Among the different applications of the device, we highlight ultra-fast switching, all-optical signal processing, optical converters [2][3][4][5]7,21,[24][25][26][27][28]30], optical logic gates [24][25][26][27] and intensity filter for pedestal suppression [29]. A very relevant study was recently done by investigating the slow Kerr effect (non-instantaneous Kerr) in a nonlinear Sagnac interferometer [20]. The authors in [7] recently developed and set up an all-optical 2 Â 2 THz Optical Asymmetric Demultiplexer (TOAD) based on Sagnac interferometer switch, aiming to implement a logic unit which enables to run 16-Boolean logical operations [7].…”