Localized input fields in rigorous coupled-wave analysis

• Verfasst von: Auer, Maximilian [VerfasserIn]
• Verfasst von: Brenner, Karl-Heinz [VerfasserIn]
• Titel: Localized input fields in rigorous coupled-wave analysis
• Verf.angabe: Maximilian Auer and Karl-Heinz Brenner
• E-Jahr: 2014
• Jahr: October 10, 2014
• Umfang: 8 S.
• Teil: volume:31
• Teil: year:2014
• Teil: number:11
• Teil: pages:2385-2393
• Teil: extent:8
• Fussnoten: Gesehen am 29.09.2020
• Titel Quelle: Enthalten in: Optical Society of AmericaJournal of the Optical Society of America / A
• Ort Quelle: Washington, DC : Soc., 1984
• Jahr Quelle: 2014
• Band/Heft Quelle: 31(2014), 11, Seite 2385-2393
• ISSN Quelle: 1520-8532
• DOI: doi:10.1364/JOSAA.31.002385
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: Diffraction gratings
• Sach-SW: Discrete Fourier transforms
• Sach-SW: Gaussian beams
• Sach-SW: Ronchi gratings
• Sach-SW: Total internal reflection
• Sach-SW: Volume gratings
• K10plus-PPN: 1733895604

Abstract

We introduce a new treatment for localized input fields in coupled-wave theory. It consists of a combination of angular spectrum decomposition and a cyclic formulation of rigorous coupled-wave analysis (RCWA), which does not require the computation of several standard RCWA calculations. The cyclic approach especially concerns the definition of the convolution matrix of the permittivity and enables the processing of multiple input plane waves in a single RCWA calculation. At the same time it ensures physically meaningful simulation results for finite truncation limits and thus inherently conserves energy. By adapting the three-dimensional (3D)-RCWA algorithm to efficiently simulate the effects of localized and arbitrarily polarized input fields to 3D volume gratings, various advanced diffraction problems such as fiber coupling, the influence of distorted plane waves, or the effects of focused beams on diffraction gratings can be investigated. Therefore, the impact of this work should concern many fields of application.