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  Physics Express 2011, 1: 3
  Research Article
All-optical logic XOR/XNOR gate operation using microring and nanoring resonators
  Muhammad Arif Jalila, Iraj Sadegh Amirib Chat Teekac,*, Jalil Alib, P. P. Yupapinc,*  
a Ibnu Sina Institute of Fundamental Science Studies (IIS), Nanotechnology Research Alliance Universiti Teknologi Malaysia, 81310, Johor Bahru, Malaysia
b Institute of Advanced Photonics Science, Nanotechnology, Research Alliance Universiti Teknologi Malaysia, 81310 Johor Bahru, Malaysia
c Nanoscale Science and Engineering Research Alliance, Advanced Research Center for Photonics Faculty of Science, King Mongkut’s Institute of Technology Ladkrabang Bangkok 10520, Thailand

  In this paper, a novel system of simultaneous optical logic AND and OR gates using dark-bright soliton conversion within the add/drop optical filter system is proposed. The input logic ‘0’ and control logic ‘0’ are formed by using the dark soliton pulse (D) trains. By using the dark-bright soliton conversion behavior within the p/2 phase shift device, we found that the simultaneous optical logic AND and OR gates at the drop and through ports can be randomly formed, respectively.
  All-optical logic gate; Dark-bright soliton conversion; Add/drop optical filter; Photonic circuits  

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