Share Email Print
cover

Proceedings Paper

Polarization sensitive beam bending using a spatially variant photonic crystal
Author(s): Jennefir L. Digaum; Javier Pazos; Raymond Rumpf; Jeff Chiles; Sasan Fathpour; Jeremy N. Thomas; Stephen M. Kuebler
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper 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.

Paper Details

Date Published: 27 February 2015
PDF: 8 pages
Proc. SPIE 9371, Photonic and Phononic Properties of Engineered Nanostructures V, 93710I (27 February 2015); doi: 10.1117/12.2076829
Show Author Affiliations
Jennefir L. Digaum, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)
Javier Pazos, The Univ. of Texas at El Paso (United States)
Raymond Rumpf, The Univ. of Texas at El Paso (United States)
Jeff Chiles, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)
Sasan Fathpour, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)
Jeremy N. Thomas, Andrews Univ. (United States)
Univ. of Central Florida (United States)
Stephen M. Kuebler, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)


Published in SPIE Proceedings Vol. 9371:
Photonic and Phononic Properties of Engineered Nanostructures V
Ali Adibi; Shawn-Yu Lin; Axel Scherer, Editor(s)

© SPIE. Terms of Use
Back to Top