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Proceedings Paper

Analytical approximation for the evaluation of the effect of fabrication error on the reflectivity of a Bragg mirror
Author(s): Roberto Fiola; Andrea Irace; Antonello Cutolo; Mario Iodice
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Paper Abstract

In this paper a novel analytical approach to evaluate spectral performances of non-ideal rectangular Bragg gratings, integrated in a slab waveguide is proposed. The effect of errors in the photolithographic definition of the grating, in particular in the period width, is investigated. We refer to gratings fabricated by means of standard e-beam photolithography apparatus. As a comparison, a numerical approach based on the Equivalent Multilayer Theory, combined with the Effective Index Method, is also presented. This procedure allow us to verify the theoretical limit of the analytical approach to better understand its range of applicability.

Paper Details

Date Published: 1 June 1999
PDF: 9 pages
Proc. SPIE 3633, Diffractive and Holographic Technologies, Systems, and Spatial Light Modulators VI, (1 June 1999); doi: 10.1117/12.349331
Show Author Affiliations
Roberto Fiola, Univ. degli Studi di Napoli Federico II (Italy)
Andrea Irace, Univ. degli Studi di Napoli Federico II (Italy)
Antonello Cutolo, Univ. degli Studi di Napoli Federico II (Italy)
Mario Iodice, Istituto di Ricerca per l'Elettromagnetismo ed i Componenti Elettronici-CNR (Italy)


Published in SPIE Proceedings Vol. 3633:
Diffractive and Holographic Technologies, Systems, and Spatial Light Modulators VI
Ivan Cindrich; Sing H. Lee; Richard L. Sutherland, Editor(s)

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