TY - JOUR ID - 3523 TI - Tb/s All-Optical Nonlinear Switching Using SOA Based Mach-Zehnder Interferometer JO - Scientia Iranica JA - SCI LA - en SN - 1026-3098 AU - Khorrami, Yaser AU - Ahmadi, Vahid AU - Razaghi, Mohammad AD - Department of Electrical and Computer Engineering, Tarbiat Modares University, Tehran, Iran AD - Department of Electrical and Computer Engineering, University of Kurdistan, Sanandaj, Iran Y1 - 2014 PY - 2014 VL - 21 IS - 3 SP - 843 EP - 852 KW - Ultrafast nonlinear optics KW - All-optical devices KW - Switching KW - Chirping KW - Mach-Zehnder interferometer KW - Semiconductor optical amplifiers DO - N2 - A newmethod for increasing speed of all-optical Mach-Zehnder Interferometric (MZI) switching with bulk semiconductor optical amplifier (SOA), by use of chirped control signals, is suggested and theoretically analyzed. For 125fs input and chirped control pulses, we show acceleration of gain recovery process using cross phase modulation (XPM) effect. Our method depicts that Tb/s switching speeds using bulk SOA-MZI with proper Q-factor is feasible. For the first time we reach operation capability at 2Tb/s with a Q-factor more than 10. The new scheme also improves the extinction and amplitude ratio of the output power as well as increases the contrast ratio of the switched signal. We use finite difference beam propagation method for MZI analysis, taking into account all nonlinear effects of SOA such as group velocity dispersion (GVD), Kerr effect, two photon absorption (TPA), carrier heating (CH) and spectral hole burning (SHB). UR - https://scientiairanica.sharif.edu/article_3523.html L1 - https://scientiairanica.sharif.edu/article_3523_fb8abd2a1a621172edc1e34c6352ff31.pdf ER -