Results 61 to 70 of about 41,134 (250)

3-Gbit/s Indoor Visible Light Communications Using Optical Diversity Schemes

IEEE Photonics Journal, 2015
A 3-Gb/s high-speed indoor visible light communication system using optical diversity schemes is presented. A double optical diversity (DOD) scheme in time and frequency is employed with selection combining (SC) on the basis of red, green, and blue (RGB)
Atul Sewaiwar, Phyu Phyu Han, Yeon Ho Chung   +2 more
doaj   +1 more source

Color-Shift-Keying Embedded Direct-Current Optical-Orthogonal-Frequency-Division-Multiplexing (CSK-DCO-OFDM) for Visible Light Communications (VLC)

IEEE Photonics Journal, 2020
We propose and experimentally demonstrate a color-shift-keying embedded direct-current-optical-orthogonal-frequency-division-multiplexing (CSK-DCO-OFDM) scheme for the VLC systems.
Wahyu Hendra Gunawan, Yang Liu, Chien-Hung Yeh, Chi-Wai Chow   +3 more
doaj   +1 more source

Deterministic Integration of Quantum Emitters and Optical Cavities in a Van Der Waals Crystal

Advanced Optical Materials, EarlyView.
The work demonstrates fabrication of Circular Bragg Grating (CBG) cavities with embedded emitters in hBN. The cavities are fabricated around a pre‐characterised quantum emitter. The integrated platform enables light matter interaction and access to brighter emitters and spins in hBN.
James Liddle‐Wesolowski, Otto Cranwell Schaeper, Nathan Coste, Benjamin Whitefield, Evan Williams, Helen Zhi Jie Zeng, Mehran Kianinia, Anastasiia Zalogina, Igor Aharonovich   +8 more
wiley   +1 more source

Bis‐Naphthyl Dipicolinic Dicarboxamide‐Based Self‐Assembled Aqueous Nano Dispersion as an Efficient Light Harvesting Medium and Cucurbit[7]Uril Host Complexation Effect Study

Advanced Optical Materials, EarlyView.
Bis‐naphthyl‐4‐hydroxy‐dipicolinic‐dicarboxamide, a small molecule, forms nanodispersion as an efficient light‐harvesting medium in aqueous solution. Further cucurbit[7]uril addition was found to inhibit the FRET co‐assembly by host‐guest complexation. ABSTRACT Development of artificial light harvesting systems in a minimalistic self‐assembly model is ...
Tumpa Gorai, Abinash Dalai, Thorfinnur Gunnlaugsson   +2 more
wiley   +1 more source

Engineering Exciton g‐Factors With Light in Type‐II Heterostructures

Advanced Optical Materials, EarlyView.
All‐optical approaches have emerged as cutting‐edge alternatives for ultrafast, energy‐efficient, and spatially localized tuning and switching of material properties. In our work, we demonstrate how light intensity alone can be leveraged to engineer g‐factors from a single‐type of carrier in type‐II heterostructures through Coulomb‐induced wavefunction
G. M. Jacobsen, V. A. Oliveira, B. L. Liang, A. Pelais, M. E. Ware, G. J. Salamo, G. E. Marques, Yu. I. Mazur, V. Lopez‐Richard, M. D. Teodoro   +9 more
wiley   +1 more source

Phonon Polariton Confinement in Isotopically Pure MOVPE‐Grown BN Triangles

Advanced Optical Materials, EarlyView.
Phonon polaritons are confined in MOVPE‐grown isotopically pure 10BN$^{10}{\rm BN}$ triangles. The resonator modes are excited and mapped by near‐field spectroscopy. Through scanning a wide infrared frequency range and modeling, the polariton dispersion relation is retrieved.
Maximilian Scharpey, Oskar Schröer, Daniel Wigger, Lena Miler, Jakub Iwański, Andrzej Wysmołek, Johannes Binder, Iris Niehues   +7 more
wiley   +1 more source

Experimental Demonstration of OFDM/OQAM Transmission for Visible Light Communications

IEEE Photonics Journal, 2016
We propose a modified orthogonal frequency division multiplexing/offset quadrature amplitude modulation (OFDM/OQAM) scheme for visible light communications (VLC).
Bangjiang Lin, Xuan Tang, Zabih Ghassemlooy, Xi Fang, Chun Lin, Yiwei Li, Shihao Zhang   +6 more
doaj   +1 more source

Deterministic Transferable Planar Dielectric Mirrors for Investigating Strong Light–Matter Coupling

Advanced Optical Materials, EarlyView.
Transferable dielectric distributed Bragg reflectors enable the deterministic assembly of high‐quality planar microcavities while maintaining the intrinsic properties of quantum materials during fabrication. The resulting structures exhibit robust exciton‐photon coupling in monolayer WS2${\rm WS}_{2}$ from cryogenic to room temperature, establishing a ...
Atanu Patra, Subhamoy Sahoo, Johannes Düreth, Simon Betzold, Sven Höfling   +4 more
wiley   +1 more source

LiRF: Light-Based Wireless Communications Supporting Ubiquitous Radio Frequency Signals

IEEE Photonics Journal
As the Internet of Things (IoT) becomes increasingly prevalent, there is a surge in wireless-connected devices. In this context, one technique that has garnered significant attention is visible light communication (VLC) due to its ultra-wide and license ...
Runxin Zhang, Menghan Li, Yuheng Zhang, Jian Xiong, Lu Lu   +4 more
doaj   +1 more source

Strong Photoluminescence Enhancement in All‐Dielectric Ge Thin Film Metasurfaces for Integration on the Si Platform

Advanced Optical Materials, EarlyView.
Germanium (Ge) all‐dielectric metasurfaces can be leveraged to strongly enhance the radiative emission from Ge layers grown on silicon‐on‐insulator substrates by industry‐standard processes. At room‐temperature, the narrowband photoluminescence (PL) intensity is enhanced by a factor ∼40× with respect to unstructured films.
Jon Schlipf, Diana Ryzhak, Giovanni Capellini, Paul Oleynik, Oliver Skibitzki, Yuji Yamamoto, Inga A. Fischer   +6 more
wiley   +1 more source