Journal of Optics

, Volume 46, Issue 2, pp 176–182 | Cite as

Parallel optical digital operations using multiple beam interference

  • Saurabh B. Saxena
  • Ruchi Bhardwaj
  • Parag SharmaEmail author
  • V. K. Jaiswal
  • Ranjana Mehrotra
Research Article


An experimental study was conducted to realize parallel optical digital operations using multiple beam interference in cascaded Mach–Zehnder and Michelson interferometers. Considering light intensity at different points of 2-D interference pattern as output, which is controlled by intensity of two input beams in the arms of Mach–Zehnder and Michelson interferometers, respectively, two input multiple AND, OR, NAND, NOR, XOR and XNOR optical logic gates are demonstrated simultaneously. Further, a scheme was proposed to use these simultaneous logic operations, in designing integrated photonic circuits. Proposed scheme may have potential application in ultrafast information processing due to parallel multiple logic operations using the least number of electro-optic/all-optical switches, e.g. using only two photonic switches in the input arms in the present case.


Multiple beam interference Optical parallel logic gates Optical/photonic chips 



The authors would like to acknowledge Director, CSIR-National Physical Laboratory New Delhi, India for encouragement and support. Authors are thankful to Dr. Stuti Joshi for helpful discussions.


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Copyright information

© The Optical Society of India 2016

Authors and Affiliations

  1. 1.CSIR-National Physical LaboratoryNew DelhiIndia
  2. 2.Academy of Scientific and Innovative Research (AcSIR)New DelhiIndia

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