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Paper Information

Journal:   SCIENTIA IRANICA   2014 , Volume 21 , Number 3 (TRANSACTIONS D: COMPUTER SCIENCE AND ENGINEERING AND ELECTRICAL ENGINEERING); Page(s) 843 To 852.
 
Paper: 

TB/S ALL-OPTICAL NONLINEAR SWITCHING USING SOA BASED MACH-ZEHNDER INTERFEROMETER

 
 
Author(s):  KHORRAMI Y.*, AHMADI V., RAZAGHI M.
 
* DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING, TARBIAT MODARES UNIVERSITY, TEHRAN, IRAN
 
Abstract: 

A new method for increasing the speed of all-optical Mach-Zehnder Interferometric (MZI) switching with a bulk Semiconductor Optical Ampli er (SOA), using chirped control signals, is suggested and theoretically analyzed. For 125fs input and chirped control pulses, we show acceleration of the gain recovery process using the cross phase modulation (XPM) eect. Our method depicts that Tb/s switching speeds, using bulk SOA-MZI with a proper Q-factor, is feasible. For the rst time, we reach operation capability at 2Tb/s with a Q-factor of more than 10. The new scheme also improves the extinction and amplitude ratio of the output power, as well as increasing the contrast ratio of the switched signal. We use a nite dierence beam propagation method for MZI analysis, taking into account all nonlinear eects of SOA, such as Group Velocity Dispersion (GVD), Kerr eect, Two Photon Absorption (TPA), Carrier Heating (CH) and Spectral Hole Burning (SHB).

 
Keyword(s): ULTRAFAST NONLINEAR OPTICS, ALL-OPTICAL DEVICES, SWITCHING, CHIRPING, MACH-ZEHNDER INTERFEROMETER, SEMICONDUCTOR OPTICAL AMPLIERS
 
References: 
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