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Gayen, D.K., Chattopadhyay, T., Bhattacharyya, A., Basak, S. and Dey, D. (2014) All-Optical Half Adder/Subtractor Using Terahertz Optical Asymmetric Demultiplexer. Applied Optics, 53, 8400-8409.

has been cited by the following article:

• TITLE: All-Optical 3:8 Decoder with the Help of Terahertz Optical Asymmetric Demultiplexer

  AUTHORS: Dilip Kumar Gayen

  KEYWORDS: Terahertz Optical Asymmetric Demultiplexer, Semiconductor Optical Amplifier, Optical Logic

  JOURNAL NAME: Optics and Photonics Journal, Vol.6 No.7, July 28, 2016

  ABSTRACT: An all-optical 3:8 decoder unit with the help of terahertz optical asymmetric demultiplexer (TOAD) is proposed. The all-optical 3:8 decoder unit with a set of all-optical full-adders and optical exclusive-ORs (XORs), can be used to perform a fast central processor unit using optical hardware components. We try to exploit the advantages of TOAD-based optical switch to design an integrated all-optical circuit which can perform decoding of signal. A theoretical model is presented and verified through numerical simulation. The new method promises both higher processing speed and accuracy. The model can be extended for studying more complex all-optical circuit of enhanced functionality in which decoder is the basic building block. The operation of the proposed circuit is parallel in nature. The impact of the switching energy with small signal gain and variation of extinction ratio and contrast ration with control pulse energy of the switching outcome is explored and assessed by means of numerical simulations.