Tight Control of Light Beams in Photonic Crystals with Spatially-Variant Unit Cells

2015 ◽  
Author(s):  
Jennefir L. Digaum ◽  
Rashi Sharma ◽  
Javier J. Pazos ◽  
Raymond C. Rumpf ◽  
Stephen M. Kuebler
Keyword(s):  
Photonic Crystals ◽  
Tight Control ◽  
Unit Cells ◽  
Spatially Variant ◽  
Light Beams

scholarly journals Tight control of light beams in photonic crystals with spatially-variant lattice orientation

2014 ◽  
Vol 22 (21) ◽  
pp. 25788 ◽  
Author(s):  
Jennefir L. Digaum ◽  
Javier J. Pazos ◽  
Jeffrey Chiles ◽  
Jeffrey D’Archangel ◽  
Gabriel Padilla ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Lattice Orientation ◽  
Tight Control ◽  
Spatially Variant ◽  
Light Beams

scholarly journals Bio-inspired spatially variant photonic crystals for self-collimation and beam-steering applications in the near-infrared spectrum

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Rudra Gnawali ◽  
Andrew Volk ◽  
Imad Agha ◽  
Tamara E. Payne ◽  
Amit Rai ◽  
...  
Keyword(s):  
Optical Properties ◽  
Photonic Crystals ◽  
Near Infrared ◽  
Beam Steering ◽  
Logic Gate ◽  
Logic Gates ◽  
Dielectric Materials ◽  
Optical Systems ◽  
Optical Logic ◽  
Spatially Variant

AbstractThe self-collimation of light through Photonic Crystals (PCs) due to their optical properties and through a special geometric structure offers a new form of beam steering with highly optical control capabilities for a range of different applications. The objective of this work is to understand self-collimation and bending of light beams through bio-inspired Spatially Variant Photonic Crystals (SVPCs) made from dielectric materials such as silicon dioxide and common polymers used in three-dimensional printing like SU-8. Based upon natural PCs found in animals such as butterflies and fish, the PCs developed in this work can be used to manipulate different wavelengths of light for optical communications, multiplexing, and beam-tuning devices for light detection and ranging applications. In this paper, we show the optical properties and potential applications of two different SVPC designs that can control light through a 90-degree bend and optical logic gates. These two-dimensional SVPC designs were optimized for operation in the near-infrared range of approximately 800–1000 nm for the 90-degree bend and 700–1000 nm for the optical logic gate. These SVPCs were shown to provide high transmission through desired regions with low reflection and absorption of light to prove the potential benefits of these structures for future optical systems.

Bio-Inspired Spatially Variant Photonic Crystals for Beam-Steering Applications

2021 ◽  
Author(s):  
Rudra Gnawali ◽  
Andrew Volk ◽  
Imad Agha ◽  
Tamara Payne ◽  
Jimmy Touma
Keyword(s):  
Optical Properties ◽  
Photonic Crystals ◽  
Beam Steering ◽  
Logic Gate ◽  
Logic Gates ◽  
Dielectric Materials ◽  
Optical Systems ◽  
Infrared Range ◽  
Optical Logic ◽  
Spatially Variant

Abstract The self-collimation of light through Photonic Crystals (PCs) due to their optical properties and through a special geometric structure offers a new form of beam steering with highly optical control capabilities for a range of different applications. The objective of this work is to understand self-collimation and bending of light beams through Spatially Variant Photonic Crystals (SVPCs) made from dielectric materials such as silicon dioxide as well as common polymers used in three-dimensional printing like SU-8. These PCs can be used for optical communications, multiplexing, and beam-tuning devices for light detection and ranging applications. In this paper we show the optical properties and potential applications of two different SVPC designs that can control light through a 90-degree bend and optical logic gates. These two-dimensional SVPC designs were optimized for operation in the near-infrared range of approximately 800–1000 nm for the 90-degree bend and 700-100nm for the optical logic gate. These SVPCs were shown to provide high transmission through desired regions with low reflection and absorption of light to prove the potential benefits of these structures for future optical systems.

Fabrication of Polymer Photonic Crystals by Two-Photon Nanolithography

2003 ◽  
Vol 776 ◽  
Author(s):  
Tae-Woo Lee ◽  
Oleg Mitrofanov ◽  
Christopher A. White ◽  
Julia W. P. Hsu
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystals ◽  
Laser Scanning ◽  
Focal Depth ◽  
Scanning Speed ◽  
Square Lattice ◽  
Beam Power ◽  
Two Photon ◽  
Aspect Ratios ◽  
Unit Cells

AbstractWe use a two-photon laser-scanning microscope to fabricate two-dimensional (2D) photonic crystal structures in commercially available SU-8 polymer films, and successfully demonstrate making nanostructures beyond the diffraction limit with high aspect ratios. By varying the laser beam power, scanning speed, focal depth, line spacing and scanning angles, we obtain 2D photonic crystals with circular, elliptical, rectangular, or diamond-shape unit cells in a hexagonal or square lattice. An aspect ratio as high as 6.9 with 250 nm line width was achieved. In addition, we can controllably place defects of specific patterns, e.g. lines, dots, and Y-splitters, in the otherwise perfect photonic crystal. We also combine two-photon nanolithography with conventional UV photolithography to make 2D photonic crystals between waveguides. The combination of these two lithography methods was done on a single polymer film, suggesting potential for easy fabrication of complex photonic devices.

Sign in / Sign up

Export Citation Format

Share Document