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- Title
Band-Gap Solitons in Nonlinear Photonic Crystal Waveguides and Their Application for Functional All-Optical Logic Gating.
- Authors
Jandieri, Vakhtang; Khomeriki, Ramaz; Onoprishvili, Tornike; Erni, Daniel; Chotorlishvili, Levan; Werner, Douglas H.; Berakdar, Jamal
- Abstract
This review paper summarizes our previous findings regarding propagation characteristics of band-gap temporal solitons in photonic crystal waveguides with Kerr-type nonlinearity and a realization of functional and easily scalable all-optical NOT, AND and NAND logic gates. The proposed structure consists of a planar air-hole type photonic crystal in crystalline silicon as the nonlinear background material. A main advantage of proposing the gap-soliton as a signal carrier is that, by operating in the true time-domain, the temporal soliton maintains a stable pulse envelope during each logical operation. Hence, multiple concatenated all-optical logic gates can be easily realized paving the way to multiple-input ultrafast full-optical digital signal processing. In the suggested setup, due to the gap-soliton features, there is no need to amplify the output signal after each operation which can be directly used as a new input signal for another logical operation. The efficiency of the proposed logic gates as well as their scalability is validated using our original rigorous theoretical formalism confirmed by full-wave computational electromagnetics.
- Subjects
PHOTONIC crystals; LOGIC circuits; WAVEGUIDES; DIGITAL signal processing; SOLITONS; COMPUTATIONAL electromagnetics; NAND gates
- Publication
Photonics, 2021, Vol 8, Issue 7, p250
- ISSN
2304-6732
- Publication type
Article
- DOI
10.3390/photonics8070250