An ultra-fast all-optical RS flip-flop based on nonlinear photonic crystal structures

Zamanian-Dehkordi, S. S.; Soroosh, Mohammad; Akbarizadeh, Gholamreza

doi:10.1007/s10043-018-0443-2

Cited by 42 publications

(9 citation statements)

References 36 publications

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“…167 AO-SR FF was realized using nonlinear Kerr effect in photonic crystal cavities with a device size of 361 μm 2 and maximum response time of 3.1 ps. 168 Optical MRR-based switch was utilized to achieve easy and cascadable structures for AO-JK, SR, and T FFs. 169 A design of AO-D FF and 2-bit down counter was proposed based on nonlinear effect in optical MRR to achieve satisfactory performance metrics.…”

Section: Ao-sequential Circuitsmentioning

confidence: 99%

Review on all-optical logic gates: design techniques and classifications – heading toward high-speed optical integrated circuits

Anagha

Jeyachitra

2022

Opt. Eng.

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All-optical logic gates (AO-LGs) are the key elements that play a pivotal role in the development of future all-optical networks and all-optical computing. A complete overview of the seven all-optical logic gates (i.e., AND, OR, NOT, XOR, XNOR, NAND, and NOR) based on their design techniques and applications are covered, including the latest technologies, such as topological photonics and artificial intelligence-based designs techniques. In addition, we have further categorized the AO-LGs as reconfigurable gates, simultaneous gates, reversible gates, modulation-based gates, and data rate-based gates. The techniques to implement these different classes of gates are reviewed and their limitations are discussed. We also discuss in brief the various simulation tools used to design and analyze the AO-LGs. Finally, the most feasible techniques for constructing optical integrated circuits based on the existing fabrication technologies and available resources are explored, and future prospects are outlined.

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Section: Ao-sequential Circuitsmentioning

confidence: 99%

Review on all-optical logic gates: design techniques and classifications – heading toward high-speed optical integrated circuits

Anagha

Jeyachitra

2022

Opt. Eng.

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“…Cs.) to provide high speed applications like sensors [16][17][18][19], filters [20,21], logic gates (i.e., AND, OR XOR [22][23][24][25][26], multiplexers and demultiplexers [27][28][29][30][31], flipflops [32][33][34][35], encoders [36][37][38], decoders [39] and half adders [40]. (Ph.…”

Section: Introductionmentioning

confidence: 99%

Appropriate Photonic Crystal Topology for Appropriate Applications

Mostafa

krosh²,

El-Rabie³

2022

Menoufia Journal of Electronic Engineering Research

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In this paper, different topologies were discussed and their effect on the design of photonic crystal applications was evaluated. They can be classified into four categories (i.e., ring resonator, selfcollimation, waveguide, and cavity-based structures). The figure of merits of each topology and its impact on design modules were explained and compared for two different applications (i.e., half-adder and decoder). Finite difference time domain (FDTD) and plane wave expansion methods are the two numerical approaches that were used to analyze the proposed designs. The truth table for each application was introduced. Comparison tables were organized to discriminate the valued characteristics for each structure. Based on the extracted tables, the appropriate topology can be chosen for the required design application according to the needed characteristic.

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“…This flip-flop was designed using optical asymmetric demultiplexer-based interferometric switch. Zamanian-Dehkordi et al [21] have proposed an all-optical RS flip-flop using nonlinear Kerr effect in photonic crystals. This structure consists of two cross-connected resonant cavities with distinct resonant modes and obtained time response of about 3.1 ps with the maximum frequency of 320 GHz.…”

Section: Introductionmentioning

confidence: 99%

Design of two-dimensional photonic crystal based ultra compact optical RS flip-flop

Soma

Sonth²,

Gowre³

2021

Photon Netw Commun

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The presented research deals with designing of a new ultra compact all-optical RS flip-flop on a two-dimensional (2-D) hexagonal photonic crystal platform. The flip-flop is designed by using two NOR gates, photonic crystal waveguides, four silicon ring resonators, four input ports and two output ports. The designed flip-flop structure has hexagonal silicon rods in the air host with a lattice constant a of 630 nm. Si rods have a radius of 0.2a and operating waveleangth of 1550 nm. The novel design provides proper distinction between logic 1 and logic 0 at the output by giving 8.7 dB and 4 dB contrast ratio at Q and Qbar output, respectively. Furthermore, uncomplicated structure resulting in small dimension of 28 μm * 28 μm makes it appropriate for optical integrated circuit in optical networks. FDTD method is used to model the proposed structure and simulated using RSoft FullWAVE simulator tool.

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An ultra-fast all-optical RS flip-flop based on nonlinear photonic crystal structures

Cited by 42 publications

References 36 publications

Review on all-optical logic gates: design techniques and classifications – heading toward high-speed optical integrated circuits

Review on all-optical logic gates: design techniques and classifications – heading toward high-speed optical integrated circuits

Appropriate Photonic Crystal Topology for Appropriate Applications

Design of two-dimensional photonic crystal based ultra compact optical RS flip-flop

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