Guided-mode resonance filters of finite aperture

Jyrki Saarinen; Eero Noponen; Jari Pekka Turunen

doi:10.1117/12.208079

1 September 1995 Guided-mode resonance filters of finite aperture

Jyrki Saarinen, Eero Noponen, Jari Pekka Turunen

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Optical Engineering, Vol. 34, Issue 9, (September 1995). https://doi.org/10.1117/12.208079

Abstract

The operation of optical narrowband reflection filters based on resonance anomalies of waveguide gratings is well established for gratings of infinite extent. We investigate the properties of finite-aperture waveguide-grating resonance filters by means of rigorous electromagnetic theory and an approximate model. The rigorous approach illustrates the scattering of optical energy from the guided mode at and near the edges of the element, which leads to a reduced diffraction efficiency into the backward-diffracted zeroth order. The approximate approach provides an optical-engineering model for the estimation of the minimum grating size required to achieve a high resonance-wavelength reflectivity.

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Jyrki Saarinen, Eero Noponen, and Jari Pekka Turunen "Guided-mode resonance filters of finite aperture," Optical Engineering 34(9), (1 September 1995). https://doi.org/10.1117/12.208079

Published: 1 September 1995

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