MMI-Based Simultaneous All-Optical XOR–NAND–OR and XNOR–NOT Multilogic Gate for Phase-Based Signals

We propose a novel design to simultaneously access various optical logic functions from different output ports. Logical values of inputs and outputs are defined in phase and intensity area of light, respectively. The proposed structure is composed of one multimode interference waveguide with the ultrasmall size of 2.5 μm × 21 μm. Three output ports of proposed structure offer XOR, NAND, and OR logic functions. In addition, XNOR and NOT logic gates are realized by considering some changes in the conditions. Beam propagation method has been utilized to accomplish the simulations of light propagation. Simulation results of structure in whole C-band show that the maximum insertion loss is -0.14 dB and the least contrast ratio achieved for XOR, NAND, OR, XNOR, and NOT logic functions are 26, 24.7, 25.9, 26, and 25 dB, respectively.

[1]  Junqiang Sun,et al.  Theoretical investigation of phase-based all-optical logic gates based on AlGaAs microring resonators , 2012 .

[2]  Lei Zhang,et al.  Proof of concept of directed OR/NOR and AND/NAND logic circuit consisting of two parallel microring resonators. , 2011, Optics letters.

[3]  Jing Xu,et al.  Reconfigurable All-Optical Logic Gates for Multi-Input Differential Phase-Shift Keying Signals: Design and Experiments , 2009, Journal of Lightwave Technology.

[4]  Young Min Jhon,et al.  Reconfigurable all-optical logic AND, NAND, OR, NOR, XOR and XNOR gates implemented by photonic crystal nonlinear cavities , 2009, 2009 Conference on Lasers & Electro Optics & The Pacific Rim Conference on Lasers and Electro-Optics.

[5]  Allen Jong-Woei Whang,et al.  Multimode Interference All-Optical Logic Gates via Partially Nonlinear Propagation Region , 2003 .

[6]  K. Saitoh,et al.  Design of Optical XOR, XNOR, NAND, and OR Logic Gates Based on Multi-Mode Interference Waveguides for Binary-Phase-Shift-Keyed Signal , 2011, Journal of Lightwave Technology.

[7]  Junqiang Sun,et al.  Theoretical investigation of phase-based all-optical NOT, XOR and XNOR logic gates based on AlGaAs microring resonators , 2012 .

[8]  Kai Sun,et al.  Reconfigurable All-Optical Multilogic Gate (xor, and, and or) Based on Cross-Phase Modulation in a Highly Nonlinear Fiber , 2010, IEEE Photonics Technology Letters.

[9]  H Melchior,et al.  General self-imaging properties in N × N multimode interference couplers including phase relations. , 1994, Applied optics.

[10]  A. Rostami,et al.  Tb/s Optical Logic Gates Based on Quantum-Dot Semiconductor Optical Amplifiers , 2010, IEEE Journal of Quantum Electronics.

[11]  Yuefeng Ji,et al.  Design of ultra compact all-optical XOR, XNOR, NAND and OR gates using photonic crystal multi-mode interference waveguides , 2013 .