Results 31 to 40 of about 82,242 (274)

Harnessing optical micro-combs for microwave photonics

, 2018
In the past decade, optical frequency combs generated by high-Q micro-resonators, or micro-combs, which feature compact device footprints, high energy efficiency, and high-repetition-rates in broad optical bandwidths, have led to a revolution in a wide ...
Chu, Sai Tak, Little, Brent E., Mitchell, Arnan, Morandotti, Roberto, Moss, David J., Moss, DJ (reprint author), Swinburne Univ Technol, Ctr Microphoton, Hawthorn, Vic 3122, Australia., Nguyen, Thach G., Wu, Jiayang, Xu, Xingyuan   +8 more
core   +1 more source

Shaping plasmon beams via the controlled illumination of finite-size plasmonic crystals [PDF]

, 2014
Plasmonic crystals provide many passive and active optical functionalities, including enhanced sensing, optical nonlinearities, light extraction from LEDs and coupling to and from subwavelength waveguides.
Bouillard, J.-S., Dickson, W., Segovia, P., Wurtz, G. A., Zayats, A. V.   +4 more
core   +2 more sources

Micro-sized tunable liquid crystal optical filters

, 2017
Liquid Crystal Arrayed Microcavities (LCAM) is a new technology for ultra-narrow optical filtering (FWHM ~ 0.1 nm) that uses pico-liter volume Fabry-Perot type optical cavities filled with liquid crystal for tuning.
Atherton, David, Barber, Zeb, Barbour, Russell, Stoltzfus, Caleb   +3 more
core   +1 more source

Laser Based Underwater Communication Systems [PDF]

, 2016
We report on recent progress in the field of visible light communications including direct modulation of blue laser devices at data rates beyond 10 Gbit/s, and the transmission of 2.5 Gbit/s OOK data through water.
Giuliano, Giovanni, Kelly, Anthony E., Laycock, Leslie, Rowe, Duncan, Viola, Shaun, Watson, Scott   +5 more
core   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Hybrid Nanodisk Film for Ultra-Narrowband Filtering, Near-Perfect Absorption and Wide Range Sensing

Nanomaterials, 2019
The miniaturization and integration of photonic devices are new requirements in the novel optics field due to the development of photonic information technology.
Wenli Cui, Wei Peng, Li Yu, Xiaolin Luo, Huixuan Gao, Shuwen Chu, Jean-Francois Masson   +6 more
doaj   +1 more source

MEMS-actuated wavelength drop filter based on microsphere whispering gallery modes [PDF]

, 2011
MEMS-enabled tuneable optical coupling between optical microsphere resonators and optical fibre waveguides is reported. We describe the design, fabrication and experimental characterization of a MEMS platform, based on electrothermal actuators, which ...
Blue, Robert, Flockhart, Gordon M H, Li, Li, Uttamchandani, Deepak   +3 more
core   +1 more source

Effectiveness of rTMS on Working Memory and Inhibitory Impairments in Patients With Post‐Stroke Executive Deficits

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Considerable efforts have been dedicated to developing effective treatments for post‐stroke executive impairment (PSEI), among which repetitive transcranial magnetic stimulation (rTMS) has shown great potential. This study aimed to investigate the therapeutic effects of high‐frequency rTMS on working memory (WM) and response ...
Mengting Lao, Rongwei Du, Zhujun Wang, Yang Gao, Meiling Cheng, Xianglong Wang, Wen Wu   +6 more
wiley   +1 more source

A Thermally Tunable 1 × 4 Channel Wavelength Demultiplexer Designed on a Low-Loss Si3N4 Waveguide Platform

Photonics, 2015
A thermally tunable 1 × 4 channel optical demultiplexer was designed using an ultra low-loss Si3N4 (propagation loss ~3.1 dB/m) waveguide. The demultiplexer has three 2 × 2 Mach-Zehnder interferometers (MZI), where each of the MZI contains two 2 × 2 ...
Mohammed Shafiqul Hai, Arne Leinse, Theo Veenstra, Odile Liboiron-Ladouceur   +3 more
doaj   +1 more source

Frequency-Shift Monitoring of Optical Filter Based on Optical Labels over FTN-WDM Transmission Systems

Photonics, 2023
Optical network monitoring and soft failure identification such as optical filter shifting and filter tightening are increasingly significant for the complex and dynamic optical networks of the future.
Kaixuan Li, Tao Yang, Xue Wang, Sheping Shi, Liqian Wang, Xue Chen   +5 more
doaj   +1 more source