scholarly journals High-Speed All-Optical Switches Based on Cascaded SOAs

10.5772/34110 ◽  
2012 ◽  
Author(s):  
Xuelin Yang ◽  
Qiwei Weng ◽  
Weisheng Hu
Keyword(s):  
High Speed ◽  
Optical Switches ◽  
All Optical

Comparison of interferometric all-optical switches for demultiplexing applications in high-speed OTDM systems

2002 ◽  
Vol 20 (4) ◽  
pp. 618-624 ◽  
Author(s):  
C. Schubert ◽  
J. Berger ◽  
S. Diez ◽  
H.J. Ehrke ◽  
R. Ludwig ◽  
...  
Keyword(s):  
High Speed ◽  
Optical Switches ◽  
All Optical

All-Optical Switches and All-Optical Bistability by Nonlinear Optical Materials

1992 ◽  
Vol 247 ◽  
Author(s):  
K. Sasaki ◽  
S. Sasaki ◽  
O. Furukawa
Keyword(s):  
Optical Materials ◽  
High Speed ◽  
Optical Bistability ◽  
Directional Coupler ◽  
Basic Structure ◽  
Optical Switches ◽  
All Optical ◽  
Coupling Parameters ◽  
Layered Waveguide ◽  
High Speed Switching

ABSTRACTAll-optical switches and all-optical bistabili ties are realized by waveguide structures with vacuum evaporated polydiacetylene(PDA) films. The basic structure of the all-optical switches are prepared in the form of layered waveguide directional coupler with vacuum evaporated PDA top layer. Clearly switchings are observed at 1064nm of pulsed Nd:YAG laser. Furthermore ultra-high speed switching with Ti;Safire 135fs laser are recognized.Operations of all-optical bistabilities are carried out by nonlinear coupling at grating structures in waveguides with PDA top layers. Hysterisis curves of bistability are affected by coupling parameters of gratings and parameters of waveguides.

Time-resolved chirp properties of semiconductor optical amplifiers in high-speed all-optical switches

2013 ◽  
Vol 52 (3) ◽  
pp. 035003 ◽  
Author(s):  
Ligong Chen ◽  
Rongguo Lu ◽  
Shangjian Zhang ◽  
Jianfeng Li ◽  
Yong Liu
Keyword(s):  
High Speed ◽  
Optical Amplifiers ◽  
Semiconductor Optical Amplifiers ◽  
Optical Switches ◽  
Time Resolved ◽  
All Optical

scholarly journals Experimental and theoretical investigation of the impact of ultra-fast carrier dynamics on high-speed SOA-based all-optical switches

2006 ◽  
Vol 14 (1) ◽  
pp. 331 ◽  
Author(s):  
Mads L. Nielsen ◽  
Jesper Mørk ◽  
Rei Suzuki ◽  
Jun Sakaguchi ◽  
Yoshiyasu Ueno
Keyword(s):  
Theoretical Investigation ◽  
High Speed ◽  
Optical Switches ◽  
Carrier Dynamics ◽  
All Optical ◽  
The Impact

scholarly journals Theoretical and experimental study of fundamental differences in the noise suppression of high-speed SOA-based all-optical switches

2005 ◽  
Vol 13 (13) ◽  
pp. 5080 ◽  
Author(s):  
Mads L. Nielsen ◽  
Jesper Mørk ◽  
Rei Suzuki ◽  
Jun Sakaguchi ◽  
Yoshiyasu Ueno
Keyword(s):  
Experimental Study ◽  
High Speed ◽  
Noise Suppression ◽  
Optical Switches ◽  
All Optical

An all optical photonic crystal half adder suitable for optical processing applications

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Hamed Azhdari ◽  
Sahel Javahernia
Keyword(s):  
Photonic Crystal ◽  
Optical Waveguides ◽  
High Speed ◽  
Building Blocks ◽  
Optical Signal ◽  
Ring Resonators ◽  
Optical Processing ◽  
Nonlinear Photonic Crystal ◽  
Half Adder ◽  
All Optical

Abstract Increasing the speed of operation in all optical signal processing is very important. For reaching this goal one needs high speed optical devices. Optical half adders are one of the important building blocks required in optical processing. In this paper an optical half adder was proposed by combining nonlinear photonic crystal ring resonators with optical waveguides. Finite difference time domain method wase used for simulating the final structure. The simulation results confirmed that the rise time for the proposed structure is about 1 ps.

scholarly journals Dual-shot dynamics and ultimate frequency of all-optical magnetic recording on GdFeCo

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Sicong Wang ◽  
Chen Wei ◽  
Yuanhua Feng ◽  
Hongkun Cao ◽  
Wenzhe Li ◽  
...  
Keyword(s):  
Magnetization Reversal ◽  
Energy Efficient ◽  
High Speed ◽  
Data Transfer ◽  
Laser Pulses ◽  
Time Resolved ◽  
All Optical ◽  
Fs Laser ◽  
High Speed Data ◽  
Natural Way

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.

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