scholarly journals Nanoscale on-chip all-optical logic parity checker in integrated plasmonic circuits in optical communication range

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Feifan Wang ◽  
Zibo Gong ◽  
Xiaoyong Hu ◽  
Xiaoyu Yang ◽  
Hong Yang ◽  
...  
Keyword(s):  
Optical Communication ◽  
Optical Logic ◽  
Communication Range ◽  
Parity Checker ◽  
All Optical ◽  
On Chip

All-optical tunable dual Fano resonance in nonlinear metamaterials in optical communication range

2017 ◽  
Vol 65 (2) ◽  
pp. 206-212 ◽  
Author(s):  
Yi Zhou ◽  
Xiaoyong Hu ◽  
Chong Li ◽  
Hong Yang ◽  
Qihuang Gong
Keyword(s):  
Optical Communication ◽  
Fano Resonance ◽  
Communication Range ◽  
All Optical ◽  
Nonlinear Metamaterials

scholarly journals Ultracompact all-optical logic gates based on nonlinear plasmonic nanocavities

Nanophotonics ◽  
2017 ◽  
Vol 6 (1) ◽  
pp. 365-376 ◽  
Author(s):  
Xiaoyu Yang ◽  
Xiaoyong Hu ◽  
Hong Yang ◽  
Qihuang Gong
Keyword(s):  
Slow Light ◽  
Contrast Ratio ◽  
Logic Gates ◽  
Excitation Power ◽  
Optical Logic ◽  
All Optical ◽  
Nonlinearity Effect ◽  
Order Of Magnitude ◽  
On Chip ◽  
Induced Transparency

AbstractIn this study, nanoscale integrated all-optical XNOR, XOR, and NAND logic gates were realized based on all-optical tunable on-chip plasmon-induced transparency in plasmonic circuits. A large nonlinear enhancement was achieved with an organic composite cover layer based on the resonant excitation-enhancing nonlinearity effect, slow light effect, and field confinement effect provided by the plasmonic nanocavity mode, which ensured a low excitation power of 200 μW that is three orders of magnitude lower than the values in previous reports. A feature size below 600 nm was achieved, which is a one order of magnitude lower compared to previous reports. The contrast ratio between the output logic states “1” and “0” reached 29 dB, which is among the highest values reported to date. Our results not only provide an on-chip platform for the study of nonlinear and quantum optics but also open up the possibility for the realization of nanophotonic processing chips based on nonlinear plasmonics.

scholarly journals On-Chip All-Optical Switching and Memory by Silicon Photonic Crystal Nanocavities

2008 ◽  
Vol 2008 ◽  
pp. 1-10 ◽  
Author(s):  
Masaya Notomi ◽  
Takasumi Tanabe ◽  
Akihiko Shinya ◽  
Eiichi Kuramochi ◽  
Hideaki Taniyama
Keyword(s):  
Photonic Crystal ◽  
Optical Switching ◽  
Photon Absorption ◽  
Nonlinear Material ◽  
Optical Logic ◽  
Flip Flop ◽  
Silicon Photonic ◽  
All Optical ◽  
On Chip ◽  
All Optical Switching

We review our recent studies on all-optical switching and memory operations based on thermo-optic and carrier-plasma nonlinearities both induced by two-photon absorption in silicon photonic crystal nanocavities. Owing to high-Q and small volume of these photonic crystal cavities, we have demonstrated that the switching power can be largely reduced. In addition, we demonstrate that the switching time is also reduced in nanocavity devices because of their short diffusion time. These features are important for all-optical nonlinear processing in silicon photonics technologies, since silicon is not an efficient optical nonlinear material. We discuss the effect of the carrier diffusion process in our devices, and demonstrate improvement in terms of the response speed by employing ion-implantation process. Finally, we show that coupled bistable devices lead to all-optical logic, such as flip-flop operation. These results indicate that a nanocavity-based photonic crystal platform on a silicon chip may be a promising candidate for future on-chip all-optical information processing in a largely integrated fashion.

Regenerative and reconfigurable all-optical logic gates for ultra-fast applications

2005 ◽  
Vol 41 (7) ◽  
pp. 435 ◽  
Author(s):  
A. Bogoni ◽  
L. Potì ◽  
R. Proietti ◽  
G. Meloni ◽  
F. Ponzini ◽  
...  
Keyword(s):  
Logic Gates ◽  
Optical Logic ◽  
Optical Logic Gates ◽  
All Optical

scholarly journals Band-Gap Solitons in Nonlinear Photonic Crystal Waveguides and Their Application for Functional All-Optical Logic Gating

Photonics ◽  
2021 ◽  
Vol 8 (7) ◽  
pp. 250
Author(s):  
Vakhtang Jandieri ◽  
Ramaz Khomeriki ◽  
Tornike Onoprishvili ◽  
Daniel Erni ◽  
Levan Chotorlishvili ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Band Gap ◽  
Crystalline Silicon ◽  
Logic Gates ◽  
Photonic Crystal Waveguides ◽  
Optical Logic ◽  
Logical Operation ◽  
Pulse Envelope ◽  
Gap Soliton ◽  
All Optical

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.

All optical NAND/NOR and majority gates using nonlinear photonic crystal ring resonator

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Hassan Mamnoon-Sofiani ◽  
Sahel Javahernia
Keyword(s):  
Photonic Crystal ◽  
Ring Resonator ◽  
Logic Gates ◽  
Building Blocks ◽  
Optical Data ◽  
Optical Logic ◽  
Optical Logic Gates ◽  
Nonlinear Photonic Crystal ◽  
All Optical ◽  
Photonic Crystal Ring Resonator

Abstract All optical logic gates are building blocks for all optical data processors. One way of designing optical logic gates is using threshold switching which can be realized by combining an optical resonator with nonlinear Kerr effect. In this paper we showed that a novel structure consisting of nonlinear photonic crystal ring resonator which can be used for realizing optical NAND/NOR and majority gates. The delay time of the proposed NAND/NOR and majority gates are 2.5 ps and 1.5 ps respectively. Finite difference time domain and plane wave expansion methods were used for simulating the proposed optical logic gates. The total footprint of the proposed structure is about 988 μm2.

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