Spectral filtering with subwavelength gratings: overview and latest advances

Vincent, Grégory; Sakat, Emilie; Ghenuche, Petru; Collin, Stéphane; Bardou, Nathalie; Rommeluère, Sylvain; Primot, Jérôme; Deschamps, Joël; Pardo, Fabrice; Pélouard, Jean-Luc; Haïdar, Riad

doi:10.1117/12.914510

Cited by 3 publications

(2 citation statements)

References 33 publications

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“…In these filters, guiding and periodically modulated layers are judiciously arranged to create interference effects between the interfaces, to control the spectral features of transmission, reflection and absorption. GMR filters have mainly been used in the near infra-red wavelength regime, including for imaging applications [3,4]. The visible spectrum is also being researched [5,6], including filters with low angular dependence [7] and broad wavelength response [8].…”

Section: Introductionmentioning

confidence: 99%

Optical guided mode resonance filter on a flexible substrate

Reader-Harris¹,

Ricciardi²,

Krauss³

et al. 2013

Opt. Express

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Abstract:We demonstrate the operation of a flexible optical filter based on guided mode resonances that operates in the visible regime. The filter is fabricated on a free standing polymeric membrane of 1.3 μm thickness and we show how the geometrical design parameters of the filter determine its optical properties, and how various types of filter can be made with this scheme. To highlight the versatility and robustness of the approach, we mount a filter onto a collimated fibre output and demonstrate successful wavelength filtering.

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Section: Introductionmentioning

confidence: 99%

Optical guided mode resonance filter on a flexible substrate

Reader-Harris¹,

Ricciardi²,

Krauss³

et al. 2013

Opt. Express

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“…A wide variety of applications are envisaged, for example, hyperspectral imaging as well in astronomical applications requiring tuning over a wide range of wavelengths. 26,27 …”

mentioning

confidence: 99%

Wide wavelength range tunable one-dimensional silicon nitride nano-grating guided mode resonance filter based on azimuthal rotation

et al. 2017

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We describe wavelength tuning in a one dimensional (1D) silicon nitride nano-grating guided mode resonance (GMR) structure under conical mounting configuration of the device. When the GMR structure is rotated about the axis perpendicular to the surface of the device (azimuthal rotation) for light incident at oblique angles, the conditions for resonance are different than for conventional GMR structures under classical mounting. These resonance conditions enable tuning of the GMR peak position over a wide range of wavelengths. We experimental demonstrate tuning over a range of 375 nm between 500 nm˜875 nm. We present a theoretical model to explain the resonance conditions observed in our experiments and predict the peak positions with show excellent agreement with experiments. Our method for tuning wavelengths is simpler and more efficient than conventional procedures that employ variations in the design parameters of structures or conical mounting of two-dimensional (2D) GMR structures and enables a single 1D GMR device to function as a high efficiency wavelength filter over a wide range of wavelengths. We expect tunable filters based on this technique to be applicable in a wide range of fields including astronomy and biomedical imaging.

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