TOAD-Based Frequency-Encoded All Optical XOR Gate, Half Adder, and Half Subtractor

Emerging Trends in Terahertz Engineering and System Technologies ◽

10.1007/978-981-15-9766-4_9 ◽

2021 ◽

pp. 177-192

Author(s):

Kousik Mukherjee ◽

Kajal Maji ◽

Ashif Raja ◽

Mrinal Kanti Mandal

Keyword(s):

Xor Gate ◽

Half Adder ◽

All Optical

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All-Optical Half-Adder Circuit Based on Beam Interference Principle of Photonic Crystal

Journal of Optical Communications ◽

10.1515/joc-2016-0121 ◽

2017 ◽

Vol 39 (1) ◽

Cited By ~ 1

Author(s):

Sandip Swarnakar ◽

Santosh Kumar ◽

Sandeep Sharma

Keyword(s):

Integrated Circuits ◽

Finite Difference Time Domain ◽

Fdtd Method ◽

Sequential Circuits ◽

Square Lattice ◽

Xor Gate ◽

Half Adder ◽

All Optical ◽

Combinational And Sequential Circuits ◽

Difference Time

AbstractNow a day’s photonic crystals (PhCs) are in trends for designing of various integrated circuits like combinational and sequential circuits. The designing of all-optical half adder circuit based on beam interference principle, using T-shaped square lattice with silica dielectric rods in air background, is proposed. This design is a combination of two structures: one part of it works as AND gate and other part works as XOR gate. This structure is simulated using finite difference time domain (FDTD) method and verified numerically using PWE band solver and also using MATLAB.

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An all optical photonic crystal half adder suitable for optical processing applications

Journal of Optical Communications ◽

10.1515/joc-2020-0261 ◽

2021 ◽

Vol 0 (0) ◽

Author(s):

Hamed Azhdari ◽

Sahel Javahernia

Keyword(s):

Photonic Crystal ◽

Optical Waveguides ◽

High Speed ◽

Building Blocks ◽

Optical Signal ◽

Ring Resonators ◽

Optical Processing ◽

Nonlinear Photonic Crystal ◽

Half Adder ◽

All Optical

Abstract Increasing the speed of operation in all optical signal processing is very important. For reaching this goal one needs high speed optical devices. Optical half adders are one of the important building blocks required in optical processing. In this paper an optical half adder was proposed by combining nonlinear photonic crystal ring resonators with optical waveguides. Finite difference time domain method wase used for simulating the final structure. The simulation results confirmed that the rise time for the proposed structure is about 1 ps.

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