2015
Digaum, Jennefir L; Sharma, Rashi; Batista, Daniel; Pazos, Javier J; Rumpf, Raymond C; Kuebler, Stephen M
Beam-bending in spatially variant photonic crystals at telecommunications wavelengths Proceedings
International Society for Optics and Photonics, vol. 9759, 2015.
Abstract | Links | BibTeX | Tags: self-collimation, spatially variant photonic crystals, spatially-variant photonic crystals (SVPC), waveguide
@proceedings{RN105,
title = {Beam-bending in spatially variant photonic crystals at telecommunications wavelengths},
author = {Jennefir L Digaum and Rashi Sharma and Daniel Batista and Javier J Pazos and Raymond C Rumpf and Stephen M Kuebler},
url = {https://www.spiedigitallibrary.org/conference-proceedings-of-spie/9371/1/Polarization-sensitive-beam-bending-using-a-spatially-variant-photonic-crystal/10.1117/12.2076829.short},
doi = {https://doi.org/10.1117/12.2076829},
year = {2015},
date = {2015-02-27},
booktitle = {Advanced Fabrication Technologies for Micro/Nano Optics and Photonics IX},
volume = {9759},
pages = {975911},
publisher = {International Society for Optics and Photonics},
abstract = {A spatially-variant photonic crystal (SVPC) that can control the spatial propagation of electromagnetic waves in three dimensions with high polarization sensitivity was fabricated and characterized. The geometric attributes of the SVPC lattice were spatially varied to make use of the directional phenomena of self-collimation to tightly bend an unguided beam coherently through a 90 degree angle. Both the lattice spacing and the fill factor of the SVPC were maintained to be nearly constant throughout the structure. A finite-difference frequency-domain computational method confirms that the SVPC can self-collimate and bend light without significant diffuse scatter caused by the bend. The SVPC was fabricated using multi-photon direct laser writing in the photo-polymer SU-8. Mid-infrared light having a vacuum wavelength of λ0 = 2.94 μm was used to experimentally characterize the SVPCs by scanning the sides of the structure with optical fibers and measuring the intensity of light emanating from each face. Results show that the SVPC is capable of directing power flow of one polarization through a 90-degree turn, confirming the self-collimating and polarization selective light-guiding properties of the structures.},
keywords = {self-collimation, spatially variant photonic crystals, spatially-variant photonic crystals (SVPC), waveguide},
pubstate = {published},
tppubtype = {proceedings}
}
A spatially-variant photonic crystal (SVPC) that can control the spatial propagation of electromagnetic waves in three dimensions with high polarization sensitivity was fabricated and characterized. The geometric attributes of the SVPC lattice were spatially varied to make use of the directional phenomena of self-collimation to tightly bend an unguided beam coherently through a 90 degree angle. Both the lattice spacing and the fill factor of the SVPC were maintained to be nearly constant throughout the structure. A finite-difference frequency-domain computational method confirms that the SVPC can self-collimate and bend light without significant diffuse scatter caused by the bend. The SVPC was fabricated using multi-photon direct laser writing in the photo-polymer SU-8. Mid-infrared light having a vacuum wavelength of λ0 = 2.94 μm was used to experimentally characterize the SVPCs by scanning the sides of the structure with optical fibers and measuring the intensity of light emanating from each face. Results show that the SVPC is capable of directing power flow of one polarization through a 90-degree turn, confirming the self-collimating and polarization selective light-guiding properties of the structures.