Results 41 to 50 of about 66,231 (314)

Slow-light and evanescent modes at interfaces in photonic crystal waveguides: optimal extraction from experimental near-field measurements [PDF]

, 2011
We develop a systematic approach for simultaneous extraction of the dispersion relations and profiles of multiple modes in periodic waveguides though a special global optimization procedure applied to near-field electric field measurements in the ...
Ha, S., de Sterke, C. Martijn, Yuri S. Kivshar, Krauss, T.F., Sterke, C.M. de, Spasenovic, Marko, White, Tom P, Sukhorukov, Andrey A., Krauss, Thomas Fraser, Thomas F. Krauss, White, T.P., Sangwoo Ha, Kuipers, L.K. (Kobus), Sukhorukov, A.A., Kivshar, Y.S. (Yuri), Thomas P. White, Andrey A. Sukhorukov, Kuipers, L. Kobus, L. (Kobus) Kuipers, Spasenović, M., Marko Spasenović, C. Martijn de Sterke, Ha, Sangwoo, Kivshar, Yuri S.   +23 more
core   +1 more source

Oxidized MoS2‐Based Multifunctional Memristive Hardware for Energy‐Efficient mmWave Signal Processing and In‐Memory Matrix Multiplication

Advanced Functional Materials, EarlyView.
Thermally oxidized MoS2‐based radio‐frequency switches enable a multifunctional platform that unifies broadband RF switching and in‐memory computation. The device achieves a cutoff frequency of 33.2 THz with high energy efficiency and supports hardware‐aware signal processing.
Juho Son, Changwoo Pyo, Sungmoon Park, Yoongi Cho, Seungchan Lee, Myungsoo Kim   +5 more
wiley   +1 more source

Giant Birefringence of Periodic Dielectric Waveguides

IEEE Photonics Journal, 2011
The giant (Δn >; 1.5) and broadband achromatic birefringence is realized by periodic dielectric waveguides (PDWs), which benefit from low loss transmission, compact size, and simple structure.
Wenfu Zhang, Jihong Liu, Wei-Ping Huang, Wei Zhao   +3 more
doaj   +1 more source

Slot Array Antenna using Folded Waveguides [PDF]

, 2005
A highly compact slot array antenna using substrate integrated folded waveguides (SIFW) is proposed in this paper. The device has three key components: a non adiating SMA to standard waveguide transition, a power divider from standard waveguide to folded
Sanz-Izquierdo, Benito, Langley, Richard J., Young, Paul R., Batchelor, John C., Grigoropoulos, N.   +4 more
core  

Understanding the rich physics of light propagation in slow photonic crystal waveguides

, 2010
Selected papers. Held as part of SPIE Photonics West 2010.We study propagation losses in slow light photonic crystal waveguides and show that dispersion engineering can reduce the loss.
Lalanne, Phillippe, De La Rue, Richard, Beggs, Daryl M., M. Sorel, MELLONI, ANDREA IVANO, Thomas F. Krauss, Francesco Morichetti, Schulz, Sebastian, Beggs, Daryl Matthew, Sebastian Schulz, Marc Sorel, Samarelli, Antonio, Liam O'Faolain, Krauss, Thomas F., Daryl M. Beggs, Sorel, Marc, Simon Mazoyer, L. O'Faolain, Morichetti, Francesco, D. M. Beggs, S. Schulz, Canciamilla, Antonio, A. Samarelli, TORREGIANI, MATTEO ALDO, O'Faolain, Liam, Antonio Samarelli, Andrea Melloni, Torregiani, M., Richard De La Rue, Phillippe Lalanne, Melloni, Andrea, Antonio Canciamilla, T. F. Krauss, Mazoyer, Simon, R. De La Rue, M. Torregiani   +35 more
core   +1 more source

Twin Crystal Moiré Metasurfaces for Crossing Flat‐Band Transport

Advanced Functional Materials, EarlyView.
This study introduces twin crystal moiré metasurfaces, breaking in‐plane symmetry to enable reconfigurable acoustic wave manipulation. By adjusting the twin angle and interlayer twist angle, various combinations of hyperbolic, flat bands, and elliptic states can be synthesized in the system.
Shida Fan, Chenglin Han, Kuan He, Chadi Ellouzi, Yunlong Wang, Li‐Qun Chen, Jie Sun, Zhaodong Xu, Chen Shen, Tianzhi Yang   +9 more
wiley   +1 more source

S-Bend and Y Waveguide Architectures in Germanate Glasses Irradiated by Femtosecond Laser

Micromachines
This study is focused on the fabrication and characterization of various dual waveguides through femtosecond (fs) laser irradiation of GeO2-based glass samples.
Thiago Vecchi Fernandes, Camila Dias da Silva Bordon, Niklaus Ursus Wetter, Wagner de Rossi, Luciana Reyes Pires Kassab   +4 more
doaj   +1 more source

Compact Single-Mode Silicon Hybrid Rib/Strip Waveguide With Adiabatic Bends

IEEE Photonics Journal, 2011
We report a low-loss, hybrid silicon waveguide geometry that consists of straight rib sections with a propagation loss of 0.27 ± 0.012 dB/cm and compact photonic wire bends.
W. Bogaerts, S. K. Selvaraja
doaj   +1 more source

Low‐Profile, High‐Gain GRIN RF Lenses via Multi‐Material Vat Photopolymerization

Advanced Functional Materials, EarlyView.
We investigate the opportunity of leveraging multi‐material vat photopolymerization printing to manufacture intricate lenses exhibiting permittivity gradients that can increase signal gain in transmitted radiofrequency signals in the X‐ and Ku‐bands. Lenses produced with more distinct low‐loss materials (up to 5) can deliver an 18 dB signal gain with a
Lawrence Romangsuriat, Alexander Peraire‐Bueno, A. John Hart, Randall M. Erb   +3 more
wiley   +1 more source

Tunable Plasmonic Band-Pass Filter with Dual Side-Coupled Circular Ring Resonators

Sensors, 2017
A wavelength band-pass filter with asymmetric dual circular ring resonators in a metal-insulator-metal (MIM) structure is proposed and numerically simulated.
Dongdong Liu, Jicheng Wang, Feng Zhang, Yuewu Pan, Jian Lu, Xiaowu Ni   +5 more
doaj   +1 more source