Silicon microring resonator based all-optical 3-input majority gate and its applications

Modelling of all optical synchronous up-counter using microring resonator

“…Hence it causes a blue shift which is temporary in the MRR resonance wavelength, due to which it goes into 'OFF' resonance state. In this state, for the input signal at the input port maximum transmittance is seen at the through port and minimum transmittance occurs at the drop port 9,16 .…”

“…All-optical switching has been used to implement various circuits like logic gates, and few combinational and sequential circuits using some developed techniques namely Semiconductor-optical Amplifier (SOA) 5 , quantum-dot SOA 6 , Mach-Zehnder Interferometer (MZI) 7 , Terahertz Optical Asymmetric Demultiplexer (TOADs) 8 , and non-linear material Optical Microring Resonators (MRRs) 9 . MRRs were preferred because the signal is carried in the form of photons only and it also has several advantages like miniaturized ring dimensions, lesser complex circuit, has narrow band, has high wavelength selectivity, and large free spectral range.…”

“…MRRs were preferred because the signal is carried in the form of photons only and it also has several advantages like miniaturized ring dimensions, lesser complex circuit, has narrow band, has high wavelength selectivity, and large free spectral range. Using MRRs a number of logic circuits like universal logic gates 1,[9][10][11] , combinational circuits like sequence generator 12 , multiplexer 13,14 , comparators 15 and sequential circuits like flip-flops 16 , counters 17,18 , reversible logic gates 19,20 , ALU reconfigurable logic operations 21 , etc. have been devised.…”

2:1 multiplexer-based all-optical NOT, AND, OR gates, one-bit half adder, and subtractor employing silicon microring resonator

“…This includes a variety of designs, algorithms, and logical and arithmetic operations. AO methodologies, such as Mach Zehnder interferometer (MZI), semiconductor-optical amplifier (SOA), quantum-dot SOA (QD-SOA), terahertz-optical asymmetric demultiplexers (TOAD), nonlinear material (NLM), and microring resonator (MRR), [1][2][3][4][5][6][7] have been developed in the last few years to implement various logic circuits for optical communication, computing, and signal processing.…”

All optical Majority gate using Quantum dot SOA based Tera hertz Optical Asymmetric Demultiplexer (TOAD)

“…In recent years all optical majority gate has find attraction of researchers. These includes majority gate based on single electron box [11], lasers [1,13], photonic crystals [14][15][16][17], micro ring resonators (MRR) [18], nonlinear resonant cavity [19], polarization rotation in semiconductor optical amplifier [20] etc.…”