Realization of true all-optical AND logic gate based on nonlinear coupled air-hole type photonic crystal waveguides

Abstract

In this manuscript we propose an easily scalable true all-optical AND logic gate for pulsed signal operation based on band-gap transmission within nonlinear realistic air-hole type coupled photonic crystal waveguides (C-PCW). We call it "true" all-optical AND logic gate, because all AND gate topologies operate with temporal solitons that maintain a stable pulse envelope during the optical signal processing along the different C-PCW modules yielding ultrafast full-optical digital signal processing. We directly use the registered (output) signal pulse as new input signal between multiple concatenated nonlinear C-PCW modules (i.e. AND gates) to setup a multiple-input true all-optical AND logic gate. Extensive full-wave computational electromagnetic analysis proves the correctness of our theoretical studies and the proposed operation principle of the multiple-input AND logic gate is vividly demonstrated for realistic C-PCWs.

All-optical logic operations based on silicon-on-insulator waveguides

“…On the other hand, the development of all-optical (AO) logic technologies is fundamental to realize future telecommunication networks with the exponential growth of internet traffic. Several waveguides, including photonic crystal waveguides, 2 – 9 semiconductor platforms, 10 – 14 gold nanowire waveguides, 15 metal slot waveguides, 16 metal–insulator–metal structures, 17 dielectric–metal–dielectric design, 18 dielectric–loaded waveguides, 19 graphene–containing compact microdisks, 20 and optical amplifiers, 21 have been used to create AO logic gates in recent years. The majority of these published designs only used photonic crystals to realize one or, at most, two logic gates, 2 – 13 in contrast to the suggested waveguide, which simultaneously realized seven logic operations.…”

“…Several waveguides, including photonic crystal waveguides, 2 – 9 semiconductor platforms, 10 – 14 gold nanowire waveguides, 15 metal slot waveguides, 16 metal–insulator–metal structures, 17 dielectric–metal–dielectric design, 18 dielectric–loaded waveguides, 19 graphene–containing compact microdisks, 20 and optical amplifiers, 21 have been used to create AO logic gates in recent years. The majority of these published designs only used photonic crystals to realize one or, at most, two logic gates, 2 – 13 in contrast to the suggested waveguide, which simultaneously realized seven logic operations. Furthermore, some of these reported projects have utilized more expensive noble metals, such as gold and silver, 15 – 19 as compared to the materials (i.e., silicon and silica) used in our design.…”

ADVANCED PROGRESS ON Χ<SUP>(3)</SUP> NONLINEARITY IN CHIP-SCALE PHOTONIC PLATFORMS (INVITED REVIEW)

“…On the platform of PhCWs, Jandieri et al numerically proposed an all-optical multiple-input AND gate on a coupled Kerr-type nonlinear air hole PhCW (C-PCW) in 2018 [215]. The gate can be modified for an all-optical multiple-input OR gate.…”

Experimental Realization of Topologically‐Protected All‐Optical Logic Gates Based on Silicon Photonic Crystal Slabs

“…For realizing the future optical computer, as many all-optical logic gates as possible are expected to be integrated on chips. In order to obtain the compact footprint of the logic device, various methods and platforms are employed in recent decades, such as plasmon, [9][10][11] photonic crystals (PhCs), [12][13][14][15][16][17] dielectric wire wave DOI: 10.1002/lpor.202200329 guide, [18][19][20][21][22][23][24][25][26][27][28] and so on. The plasmonic logic gates have an ultrasmall footprint, but their optical loss is too large.…”