Results 51 to 60 of about 176,252 (197)

Fano resonances in antennas: General control over radiation patterns

, 2013
The concepts of many optical devices are based on the fundamental physical phenomena such as resonances. One of the commonly used devices is an electromagnetic antenna that converts localized energy into freely propagating radiation and vise versa ...
Belov, Pavel A., Filonov, Dmitry S., Kapitanova, Polina V., Kivshar, Yuri S., Limonov, Mikhail F., Rybin, Mikhail V., Slobozhanyuk, Alexey P.   +6 more
core   +1 more source

Solid and hollow whispering gallery mode resonators for all optical switch [PDF]

EPJ Web of Conferences
Whispering-gallery-modes resonators (WGMR) are effective switching devices when either coated or filled with non-linear material. We present examples of all-optical switching of hybrid WGM using polyfluorene, a methacrylate azobenzene and an acrylate ...
Frigenti Gabriele, Murzina Tatyana V., Farnesi Daniele, Pelli Stefano, Nunzi Conti Gualtiero, Soria Silvia   +5 more
doaj   +1 more source

Switching on Versatility: Recent Advances in Switchable Plasmonic Nanostructures

Small Science, 2023
Plasmonic nanostructures are emerging as a promising avenue for nanophotonics due to their extreme light and thermal confinement, ultrafast manipulation processes, and potential uses in device miniaturization.
Hajun Yoo, Hyunwoong Lee, Seongmin Im, Sukhyeon Ka, Gwiyeong Moon, Kyungnam Kang, Donghyun Kim   +6 more
doaj   +1 more source

Effective electro-optical modulation with high extinction ratio by a graphene-silicon microring resonator

, 2015
Graphene opens up for novel optoelectronic applications thanks to its high carrier mobility, ultra-large absorption bandwidth, and extremely fast material response.
Bao Q., Bao Q., Bao Q. L., Bolotin K. I., Bonaccorso F., Cai X., Ding Y., Du X., Fang Z., Ferrari A. C., Ferrari A. C., Gan X., Geim A. K., Gu T., Hao Hu, Hendry E., Kim J., Kim S., Kresten Yvind, Kumar N., Lars Hagedorn Frandsen, Li W., Li X. M., Liao L., Lin Y. M., Liu M., Liu M., N. Asger Mortensen, Nagashio K., Novoselov K. S., Novoselov K. S., Obraztsov P. A., Pospischil A., Qiu C., Sanshui Xiao, Wang F., Wang X., Xiaolong Zhu, Xing G., Yu L., Yunhong Ding, Zhou H., Zhu W., Zhu X., Zhu X.   +44 more
core   +2 more sources

Fast polarization insensitive optical shutters using dual frequency liquid crystals [PDF]

, 2014
Most of the existing displays and optical shutters based on liquid crystals work in combination with linear polarizers. This implies that often more than half of the light is lost due to optical loss in the polarizers and/or the fact that the incoming ...
Beeckman, Jeroen, Chojnowska, Olga, Dabrowski, Roman, Kim, JDK, Mangelinckx, Glenn, Neyts, Kristiaan, Shin, J   +6 more
core  

Confinement Effects on the Crystalline Features of Poly(9,9-dioctylfluorene) [PDF]

, 2016
Typical device architectures in polymer-based optoelectronic devices, such as field effect transistors organic light emitting diodes and photovoltaic cells include sub-100 nm semiconducting polymer thin-film active layers, whose microstructure is likely ...
Li, Ruipeng, Martín, Jaime, Nogales, Aurora, Scaccabarozzi, Alberto, Smilgies, Detlef-M., Stingelin, Natalie   +5 more
core   +2 more sources

Reconfigurable Electro-optic Logic Circuits Using Microring Resonator-Based Optical Switch Array

IEEE Photonics Journal, 2016
In this paper, we propose a reconfigurable electro-optic logic circuit, which can perform any combinatorial logic operations using a microring resonator (MRR)-based optical switching array.
Yonghui Tian, Guolin Zhao, Zilong Liu, Anqi Guo, Huifu Xiao, Xiaosuo Wu, Yinghao Meng, Lin Deng, Xiaonan Guo, Guipeng Liu, Jianhong Yang   +10 more
doaj   +1 more source

Improved ionic solid/viologen hybrid electrochromic device using pre‐bleached Prussian‐blue electrode

IET Nanodielectrics, 2021
The authors demonstrate how a simple step of loading an electrochromically active Prussian blue (PB; an ionic solid) electrode with Li+ ions can help in achieving a more efficient viologen based solid state hybrid electrochromic device.
Anjali Chaudhary, Devesh K. Pathak, Manushree Tanwar, Suchita Kandpal, Tanushree Ghosh, Chanchal Rani, Rajesh Kumar   +6 more
doaj   +1 more source

Simulation and Demonstration of Directed XOR/XNOR Logic Gates Using Two Cascaded Microring Resonators

IEEE Photonics Journal, 2016
We propose and demonstrate a directed optical logic circuit that can perform the XOR and XNOR logic operations consisting of two cascaded microring resonators, i.e., an upper waveguide and an under waveguide.
Yonghui Tian, Dezhao Li, Zilong Liu, Huifu Xiao, Guolin Zhao, Jianhong Yang, Yongpeng Zhao, Genliang Han, Xiaoping Gao   +8 more
doaj   +1 more source

Interaction-Free All-Optical Switching via Quantum-Zeno Effect

, 2010
We propose a novel interaction-free scheme for all-optical switching which does not rely on the physical coupling between signal and control waves. The interaction-free nature of the scheme allows it to overcome the fundamental photon-loss limit imposed ...
Joseph B. Altepeter, M. Born, M. O. Scully, Prem Kumar, Yu-Ping Huang   +4 more
core   +1 more source