Three Dimensional Analyses of Binary Lenses

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Mahdavipour, Omid | 2011

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 42345 (05)
University: Sharif University of Technology
Department: Electrical Engineering
Advisor(s): Rashidian, Bijan; Mehrany, Khashayar
Abstract:
Nowadays, Diffractive lenses with the binary profile have extensive application in integrated optics and other areas photonics. These elements-because of their compatibility with integrated circuits fabrication methods- have easy and efficient fabrication processes. They also have low aberration and they offer vast degree of freedom in designing process. The main objective of this thesis is to present an effective method to analyze these binary lenses in three dimensions. From different vectorial analyses methods, Boundary Element Method (BEM) has been chosen because of its different advantages like appropriate precision and higher speed in comparison with other methods. Yet this method has its drawbacks like, Internal Resonance problem, Singularity of its integrals and etc. We have proposed a solution for each of these problems which have been resulted in increase in speed and decrease in computation cost. Finally, different types of lenses have been analyzed and results have been compared
Keywords:
Singular Integral ; Boundary Element Method ; Binary Lenses ; Diffractive Optical Elements

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