Increasing the angular sensitivity of two-dimensional photonic crystal based sensors to arbitrary values

Petru Borta; Léonard Monniello; M. El Kurdi; Samuel Saada; Sebastien Sauvage; Hugues Girard; Xavier Checoury

Increasing the angular sensitivity of two-dimensional photonic crystal based sensors to arbitrary values

Petru Borta ¹ Léonard Monniello ¹ M. El Kurdi ¹ Samuel Saada ² Sebastien Sauvage ¹ Hugues Girard ² Xavier Checoury ^{1, *}

* Corresponding author

1 C2N - Centre de Nanosciences et Nanotechnologies

2 LCD-LIST - Laboratoire Capteurs Diamant

DM2I - Département Métrologie Instrumentation & Information : DRT/LIST/DM2I

Abstract : A new design of photonic crystal (PhC) for optical sensing using guided mode resonance (GMR) is presented. We theoretically show that angular sensitivity is inversely proportional to the group velocity of the probed mode and can be made arbitrarily high in a properly designed PhC. PhCs made in polycrystalline diamond on insulator are fabricated. The angular sensitivity dependence is validated. We measured modes with group velocity of c/80 at a wavelength of 800 nm. A sensitivity in the order of 500 ° per refractive index unit is inferred, a value much larger than the one usually encountered in PhCs.

Keywords : photonic crystal optical sensing guided mode resonance polycrystalline diamond diamond angular sensitivity

Document type :

Journal articles

Domain :

Chemical Sciences / Material chemistry

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Submitted on : Friday, July 19, 2019 - 3:03:52 PM
Last modification on : Sunday, July 21, 2019 - 1:11:14 AM

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Increasing the angular sensitivity of two-dimensional photonic crystal based sensors to arbitrary values

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