Structures m étal-di électriques à r ésonance de mode guid é et applications au filtrage et à l'imagerie infrarouge

Abstract : Nanotechnologies have reached a maturity level that allows designing, with high confidence level, functionalized components for complex optical systems. In this context, this work addresses the issue of spectral filtering. I proposed a new design of filter based on the combination of a dielectric waveguide and on a subwavelength metallic grating. In a first time, I fabricated and characterized structures based on this design (with one dimensional 1D or two dimensional 2D geometries). I analyzed in detail the resonance mechanism and I studied the properties of these structures in terms of spectral tunability, polarization behavior, rejection efficiency and angular tolerance. Then, I proposed derivatives of these components with improved rejection efficiency and angular tolerance. Secondarly, I used various derivatives of these components to address angular filtering or multispectral imaging applications. For the latter, a 24-filter matrix has been optimized and integrated inside an infrared multispectral camera for CO2 sensing. Difficulties related to its real use conditions are highlighted and solutions are proposed to improve our results, already promising.
Document type :
Theses
Complete list of metadatas

https://pastel.archives-ouvertes.fr/pastel-00840623
Contributor : Emilie Sakat <>
Submitted on : Tuesday, July 2, 2013 - 4:50:35 PM
Last modification on : Tuesday, March 26, 2019 - 2:24:02 PM
Long-term archiving on : Thursday, October 3, 2013 - 10:45:30 AM

Identifiers

  • HAL Id : pastel-00840623, version 1

Collections

Citation

Emilie Sakat. Structures m étal-di électriques à r ésonance de mode guid é et applications au filtrage et à l'imagerie infrarouge. Optique / photonique. Ecole Polytechnique X, 2013. Français. ⟨pastel-00840623⟩

Share

Metrics

Record views

784

Files downloads

961