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.