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Optimization of 2D photonic crystal waveguide using displacement and narrowing technique

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dc.contributor.advisor Belal Bhuian Sharif, Nashad Alam, Md. Mahbub 2013-05-28T06:58:17Z 2013-05-28T06:58:17Z 2013 2013-04-27
dc.identifier.other ID 09221223
dc.identifier.other ID 09221228
dc.description This thesis report is submitted in partial fulfillment of the requirements for the degree of Bachelor of Science in Electrical and Electronic Engineering, 2013. en_US
dc.description Cataloged from PDF version of thesis report.
dc.description Includes bibliographical references (page 81-83).
dc.description.abstract In this thesis, an approach to analyze PhC structures has been developed. This approach is based on the displacement and narrowing technique. The motive is to design and optimize the desired photonic crystal waveguides and to optimize the transmission loss. Firstly, a Z -shape, a Y-shape and a Mach Zehnder photonic crystal waveguide is designed and then the designs are optimized applying the displacement and narrowing technique. The displacement method allows altering positions of certain PhC rods/atoms, thus breaking the periodicity of the rods, which is known as the displacement of the PhC rods. The narrowing technique is mainly applied to alter the characteristics of the PhC rods/atoms, which basically implies that, it allows altering the shape or pattern of the PhC rods by changing its radius, width and other certain parameters. So basically, the parameters of the PhC rods have been modified according to the requirements. Then, the PhC waveguides have been fine-tuned by displacing these narrowed rods in the bending regions of the designed PhC waveguides. The resulting wave propagation through the optimized waveguide showed that relatively small design areas were enough to yield the wanted improvement in efficiency and the numerical results obtained have shown much improved transmission. The design has been realized in a gallium-arsenide photonic crystal structure. The whole design and simulation process including PhC band gap simulation and wave propagation analysis is done using the software RSOFT. en_US
dc.description.statementofresponsibility Nashad Sharif
dc.description.statementofresponsibility Md. Mahbub Alam
dc.publisher BRAC University en_US
dc.rights BRAC University thesis are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission.
dc.subject Photonic Crystal en_US
dc.title Optimization of 2D photonic crystal waveguide using displacement and narrowing technique en_US
dc.type Thesis en_US
dc.contributor.department Department of Electrical and Electronic Engineering, BRAC University B. Electrical and Electronic Engineering

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