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Chin. Phys. B, 2016, Vol. 25(9): 094202    DOI: 10.1088/1674-1056/25/9/094202

Controllable all-optical stochastic logic gates and their delay storages based on the cascaded VCSELs with optical-injection

Dongzhou Zhong(钟东洲), Wei Luo(罗伟), Geliang Xu(许葛亮)
School of Information Engineering, Wuyi University, Jiangmen 529020, China
Abstract  Using the dynamical properties of the polarization bistability that depends on the detuning of the injected light, we propose a novel approach to implement reliable all-optical stochastic logic gates in the cascaded vertical cavity surface emitting lasers (VCSELs) with optical-injection. Here, two logic inputs are encoded in the detuning of the injected light from a tunable CW laser. The logic outputs are decoded from the two orthogonal polarization lights emitted from the optically injected VCSELs. For the same logic inputs, under electro-optic modulation, we perform various digital signal processing (NOT, AND, NAND, XOR, XNOR, OR, NOR) in the all-optical domain by controlling the logic operation of the applied electric field. Also we explore their delay storages by using the mechanism of the generalized chaotic synchronization. To quantify the reliabilities of these logic gates, we further demonstrate their success probabilities.
Keywords:  all-optical stochastic logic gates      delay storage      polarization bistable      success probability  
Received:  28 January 2016      Revised:  10 May 2016      Accepted manuscript online: 
PACS:  42.25.Ja (Polarization)  
  42.65.Pc (Optical bistability, multistability, and switching, including local field effects)  
  42.65.Sf (Dynamics of nonlinear optical systems; optical instabilities, optical chaos and complexity, and optical spatio-temporal dynamics)  
  42.79.-e (Optical elements, devices, and systems)  
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 61475120) and the Innovative Projects in Guangdong Colleges and Universities, China (Grant Nos. 2014KTSCX134 and 2015KTSCX146).
Corresponding Authors:  Dongzhou Zhong     E-mail:

Cite this article: 

Dongzhou Zhong(钟东洲), Wei Luo(罗伟), Geliang Xu(许葛亮) Controllable all-optical stochastic logic gates and their delay storages based on the cascaded VCSELs with optical-injection 2016 Chin. Phys. B 25 094202

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