Evaluation and Optimization of SOA-based UNI Q-Factor

Eliminating the additional input beam in all-optical XOR gate using Terahertz Optical Asymmetric Demultiplexer (TOAD) based interferometer: A theoretical analysis

“…All-optical Boolean XOR gate is the core logic unit to implement various alloptical systems such as binary adders, binary counters and decision circuits, as well as encoders and bit-pattern recognition circuits. A revolution has been brought about in all-optical information processing systems with the help of the discovery of ultra high speed all-optical switches based on cross phase modulation (XPM) [1][2][3][4][5]. Various schemes of all-optical XOR operation have been reported using semiconductor optical amplifier-Mach-Zehnder interferometer (SOA-MZI) [6][7][8][9][10][11][12][13], Terahertz Optical Asymmetric Demultiplexer (TOAD) based interferometric switch [14,15], four wave mixing (FWM) in a SOA [16], ultrafast nonlinear interferometer (UNI) [17][18][19] and bismuth oxide based nonlinear fiber (Bi-NLF) [20].…”