A method of variation of boundaries for waveguide grating couplers

Ciraolo G

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We describe a method for calculating the solution of the electromagnetic field in a non-rectilinear open waveguide by using a series expansion, starting from the field of a rectilinear waveguide. Our approach is based on a method of variation of boundaries. We prove that the obtained series expansion converges and we provide a radiation condition at infinity in such a way that the problem has a unique solution. Our approach can model several kinds of optical devices which are used in optical integrated circuits. Numerical examples will be shown for the case of finite aperiodic waveguide grating couplers.
Original languageItalian
Pages (from-to)1019-1040
Number of pages22
JournalApplicable Analysis
Volume87
Publication statusPublished - 2008

Cite this

A method of variation of boundaries for waveguide grating couplers. / Ciraolo G.

In: Applicable Analysis, Vol. 87, 2008, p. 1019-1040.

Research output: Contribution to journalArticle

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AB - We describe a method for calculating the solution of the electromagnetic field in a non-rectilinear open waveguide by using a series expansion, starting from the field of a rectilinear waveguide. Our approach is based on a method of variation of boundaries. We prove that the obtained series expansion converges and we provide a radiation condition at infinity in such a way that the problem has a unique solution. Our approach can model several kinds of optical devices which are used in optical integrated circuits. Numerical examples will be shown for the case of finite aperiodic waveguide grating couplers.

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