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Photonic Crystal Flip-Flops: Recent Developments in All Optical Memory Components.

Yonatan Pugachov¹, Moria Gulitski¹, Dror Malka¹

¹Faculty of Engineering, Holon Institute of Technology (HIT), Holon 5810201, Israel.

Materials (Basel, Switzerland)

|October 14, 2023

Summary

This review explores all-optical flip-flops (FFs) using photonic crystal (PC) structures. These advanced optical memory components offer high speed and low power for future computing.

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Area of Science:

Photonics
Optical Computing
Materials Science

Background:

All-optical memory components are crucial for high-speed computing.
Photonic crystal (PC) structures offer unique optical properties for device miniaturization and enhanced light-matter interactions.
All-optical flip-flops (FFs) are key building blocks for optical memory systems.

Purpose of the Study:

To review recent advancements in all-optical flip-flops (FFs) based on photonic crystal (PC) structures.
To explore the materials, mechanisms, and critical parameters of these optical FFs.
To highlight the advantages and potential applications of PC-based optical FFs.

Main Methods:

Review of recent scientific literature on photonic crystal (PC) based all-optical flip-flops (FFs).

Keywords:

FDTD PWE flip flop optical communication optical computing optical memory photonic crystals

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Analysis of proposed PC structures utilizing waveguides, ring resonators, scattering rods, and multi-mode interference.

Examination of key performance metrics including response time, contrast ratio, and operating wavelength.

Main Results:

Photonic crystals enable compact and efficient all-optical flip-flops (FFs) due to their unique optical properties.
Silicon, chalcogenide glass, and gallium arsenide are identified as suitable materials for fabricating optical FFs.
Various structural designs leveraging resonant cavities and interference mechanisms are presented.

Conclusions:

All-optical flip-flops (FFs) based on photonic crystals (PCs) demonstrate significant advantages like high speed and low power consumption.
These optical FFs show great promise for integration into advanced optical computing and memory systems.
The compatibility of PC materials with CMOS and fiber optics enhances their versatility for diverse applications.