All-optical computing circuits half-subtractor and comparator based on soliton interactions

Optik ◽  
2021 ◽  
Vol 227 ◽  
pp. 166079
Author(s):  
Amin Ghadi
2020 ◽  
Author(s):  
Wenbin He ◽  
Meng Pang ◽  
Dung-Han Yeh ◽  
Jiapeng Huang ◽  
Philip Russell

Abstract Mode-locked lasers have been widely used to explore interactions between optical solitons, including bound-soliton states that may be regarded as "photonic molecules". Conventional mode-locked lasers normally however host at most only a few solitons, which means that stochastic behaviours involving large numbers of solitons cannot easily be studied under controlled experimental conditions. Here we report the use of an optoacoustically mode-locked fibre laser to create hundreds of temporal traps or "reactors" in parallel, within each of which multiple solitons can be isolated and controlled both globally and individually using all-optical method. We achieve on-demand synthesis and dissociation of soliton molecules within these reactors, in this way unfolding a novel panorama of diverse dynamics in which the statistics of multi-soliton interactions can be studied. The results are of crucial importance in understanding dynamical soliton interactions, and may motivate potential applications for all-optical control of ultrafast light fields in optical resonators.


2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Tanay Chattopadhyay

Abstract In this paper, an all-optical XOR-AND gate operation has been proposed using one-dimensional periodic nonlinear material model. This structure consists of alternating layers of different nonlinear materials. In this design, we can obtain XOR and AND logical operation simultaneously at the reflected and transmitted port of the periodic structure. Numerical simulation has also been done using the finite-difference-time-domain (FDTD) method. The response time of this switching operation is picoseconds (ps) range order. We find low insertion loss (−3.01 dB), high contrast ratio (14.13 dB) and high extension ratio (10.93 dB) of this device. This design will be useful in future all-optical computing.


Queue ◽  
2009 ◽  
Vol 7 (3) ◽  
pp. 10-10 ◽  
Author(s):  
Charles Beeler ◽  
Craig Partridge

2018 ◽  
Vol 0 (0) ◽  
Author(s):  
Devendra Kr. Tripathi

AbstractAll optical logic gates are the key elements of contemporary optical computing unit. For that non-linear attribute of reflective semiconductor optical amplifier (RSOA) is exploited to configure optical logic gates. Accordingly, in the manuscript all optical OR/NOR/Buffer binary logic network for the nonreturn to zero format has been designed. Its operation at 100 Gbps data rate has been successfully realized. For the applied data inputs in nonreturn to zero patterns, their corresponding output waveforms for the stated logic action have been verified. Numerical investigations for the imperative design constraints as data rate, injected power and imperative elements of the semiconductor optical amplifiers (SOAs) pump current, carrier density, active length, confine factor, laser power has been appropriately executed with optimum performance. It has depicted good extinction ratio (>10 dB) performance with confine factor more than 0.2 and higher carrier density of amplifier. Further, it also accomplished, that for the OR, buffer logic execution with lower power of pump laser and for the NOR logic execution higher power laser pump source is required. The proposed design could fulfill need for the impending higher data rate composite optical computing units.


2008 ◽  
Vol 16 (22) ◽  
pp. 18202 ◽  
Author(s):  
Radan Slavík ◽  
Yongwoo Park ◽  
Nicolas Ayotte ◽  
Serge Doucet ◽  
Tae-Jung Ahn ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document