Results 31 to 40 of about 545,254 (302)
Selenic acid anodizing of aluminium for preparation of 1D photonic crystals
Electrochemistry Communications, 2019 Anodizing of aluminium under oscillating conditions is a reproducible, scalable, and low-cost method for the preparation of one-dimensional photonic crystals with photonic band gaps in the visible and near-infrared regions. For this purpose, sulfuric and
A.I. Sadykov +4 more
doaj +1 more source
Spatiotemporal Photonic Crystals
Conference on Lasers and Electro-Optics, 2020 We study photonic systems periodic in both time and space - spatiotemporal photonic crystals, and find that their bandstructure contains both frequency and momentum bandgaps. When the two types of bandgaps coincide, anomalous bandstructure is observed.
Yonatan Sharabi +4 more
openaire +1 more source
Extraction of group index of lossy photonic crystal waveguides [PDF]
, 2015 This work is supported by an EPSRC Impact Acceleration Grant, an EPSRC Doctoral Prize and a European Research Council Starting grant (no. 337508).We present a numerical approach to extract group index in photonic crystal (PhC) waveguides using two- and ...
Debnath, Amrita +2 more
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Band-edge-induced Bragg diffraction in two-dimensional photonic crystals [PDF]
, 2006 Two-dimensional photonic crystals composed of two orthogonal volume diffraction gratings have been photogenerated in photopolymers. When the read beam is set at the Bragg angle, the diffraction efficiency of the transmission grating is strongly enhanced ...
He, Qiong +5 more
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Advances in Physics: X, 2021 Topological photonics is an emerging field that attracts enormous interest for its novel ways to engineer the flow of light. With the help of topological protection, the surface modes of topological photonic systems have intriguing properties, such as ...
Jian-Wei Liu +6 more
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Indirect transitions of a signal interacting with a moving refractive index front [PDF]
, 2014 This research was supported by the German Research Foundation DFG (EI 391/12-2).The dynamic manipulation of light can be achieved by the interaction of a signal pulse propagating through or reflected from a refractive index front.
Munoz, Michel Castellanos +11 more
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Low insertion loss modulator based on a vertically coupled photonic crystal resonator [PDF]
, 2012 We experimentally demonstrate a simple but more efficient technique to modulate and multiplex multiple WDM channels. Our design is based on a bus waveguide vertically coupled to multiple Photonic Crystal (PhC) resonator, each of which modulates an ...
Reed, G T +11 more
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High Efficiency Interface for Coupling Into Slotted Photonic Crystal Waveguides
IEEE Photonics Journal, 2011 We investigate the mechanism of coupling light into slotted photonic crystal waveguides. We identify two alternative approaches for improving the coupling efficiency, based on engineered mode dispersion and on resonant mechanisms.
M. G. Scullion +2 more
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Crystals, 2020 The past and present goal of photonic technology stems in the fine and arbitrary control of light propagation within miniaturized devices that can possibly integrate different functionalities [...]
Martella Daniele, Sara Nocentini
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Location and Topology of the Fundamental Gap in Photonic Crystals
Physical Review X, 2022 The fundamental, or first, band gap is of unmatched importance in the study of photonic crystals. Here, we address precisely where this gap can be opened in the band structure of three-dimensional photonic crystals.
Thomas Christensen +3 more
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