Demonstration of a noble all optical D-type flip flop system for high speed data processing

2017 ◽  
Vol 59 (5) ◽  
pp. 1042-1045 ◽  
Author(s):  
Wei Lu ◽  
Alejandro Velazquez ◽  
Ghang-Ho Lee
2013 ◽  
Vol 31 (8) ◽  
pp. 1178-1184 ◽  
Author(s):  
Miguel Cabezon ◽  
Asier Villafranca ◽  
Juan J. Martinez ◽  
David Izquierdo ◽  
Ignacio Garces

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Sicong Wang ◽  
Chen Wei ◽  
Yuanhua Feng ◽  
Hongkun Cao ◽  
Wenzhe Li ◽  
...  

AbstractAlthough photonics presents the fastest and most energy-efficient method of data transfer, magnetism still offers the cheapest and most natural way to store data. The ultrafast and energy-efficient optical control of magnetism is presently a missing technological link that prevents us from reaching the next evolution in information processing. The discovery of all-optical magnetization reversal in GdFeCo with the help of 100 fs laser pulses has further aroused intense interest in this compelling problem. Although the applicability of this approach to high-speed data processing depends vitally on the maximum repetition rate of the switching, the latter remains virtually unknown. Here we experimentally unveil the ultimate frequency of repetitive all-optical magnetization reversal through time-resolved studies of the dual-shot magnetization dynamics in Gd27Fe63.87Co9.13. Varying the intensities of the shots and the shot-to-shot separation, we reveal the conditions for ultrafast writing and the fastest possible restoration of magnetic bits. It is shown that although magnetic writing launched by the first shot is completed after 100 ps, a reliable rewriting of the bit by the second shot requires separating the shots by at least 300 ps. Using two shots partially overlapping in space and minimally separated by 300 ps, we demonstrate an approach for GHz magnetic writing that can be scaled down to sizes below the diffraction limit.


2015 ◽  
Vol 62 (3) ◽  
pp. 1083-1090 ◽  
Author(s):  
D. Makowski ◽  
A. Mielczarek ◽  
P. Perek ◽  
A. Napieralski ◽  
L. Butkowski ◽  
...  

2012 ◽  
Vol 23 (4) ◽  
pp. 745-752 ◽  
Author(s):  
Emrys A. Jones ◽  
René J. M. van Zeijl ◽  
Per E. Andrén ◽  
André M. Deelder ◽  
Lex Wolters ◽  
...  

Author(s):  
G. Giannoulis ◽  
V.-M. Korpijärvi ◽  
N. Iliadis ◽  
J. Mäkelä ◽  
J. Viheriälä ◽  
...  

2012 ◽  
Vol 20 (22) ◽  
pp. 24600 ◽  
Author(s):  
Ke-Yao Wang ◽  
Keith G. Petrillo ◽  
Mark A. Foster ◽  
Amy C. Foster

2021 ◽  
Author(s):  
Ajay Kumar ◽  
Manish Kumar ◽  
Sumit Kumar Jindal ◽  
Sanjeev Kumar Raghuwanshi ◽  
Rakesh Choudhary

Abstract Implementation of switching activity in the all-optical domain is one of the most important aspects in the field of modern high-speed and secured communication technology. Micro-ring Resonator (MRR) based switching activity can be used to implement all-optical active low tri-state buffer logic and clocked D flip-flop. The paper describes the switching activity of micro-ring resonator structures and the switching activity is further used to implement the effective all-optical 4 - bit memory register using the appropriate arrangement of all-optical tri-state buffers and clocked D flip-flops with the functionality of RD and WR. The complete description of layouts and switching mechanisms of all-optical 4-bit memory registers have been explained and appropriate MATLAB simulation results are presented to observe the suitability of the proposed unit. The analysis shows that implementation of tri-state buffer logic and D flip-flop assisted 4-bit memory register in the all-optical domain includes the considerable advantages of optical communication e.g. immunity to electromagnetic interference, parallel computing, compactness, signal security, etc. The manuscript describes the detailed analysis of performance parameters e. g. extinction ratio, contrast ratio, amplitude modulation, on-off ratio, and switching speed of micro-ring resonator structures to achieve an efficient selection of device parameters and finally describes an efficient technique to implement all-optical MRR based 1 x 4 memory registers.


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