Publications by authors named "V Allie"
Waveguide based optical combiners for augmented reality (AR) glasses are integrating several surface relief gratings (SRG) whose pitch sizes can be as small as 200 nm for the blue wavelength. All SRG components exploit the first diffraction order to couple in and out or to deviate the light. We present SRG using higher diffraction orders featuring over-wavelength pitch sizes.
View Article and Find Full Text PDFWe propose a new type of color splitter, which guides a selected bandwidth of incident light towards the proper photosensitive area of the image sensor by exploiting the nanojet (NJ) beam phenomenon. Such splitting can be performed as an alternative to filtering out part of the received light on each color subpixel. We propose to split the incoming light thanks to a new type of NJ-based near-field focusing double-material element with an insert.
View Article and Find Full Text PDFArticle Synopsis
- This paper explores how plane waves diffract when they encounter a dual-material cuboid, leading to the formation of a concentrated photonic jet in the near-field region.
- The research highlights how the characteristics and orientation of the jet can change based on the materials and sizes used in the cuboid, using both experimental and numerical methods.
- Results indicate that these findings could be applied to different frequency ranges, including optical frequencies, potentially paving the way for innovative nanostructures in nanophotonic devices.