Results 111 to 120 of about 66,231 (314)

Waveguide, waveguide production method, and polarisation splitter using said waveguide

, 2019
The invention relates to a waveguide and a polarisation splitter based on said waveguide, in which a rotation of an angle greater than zero is applied to a plurality of sections of a core material and a plurality of sections of a covering material, thereby achieving independent control of the refractive indices of a zero-order transverse electric mode ...
Halir, Robert, Luque-González, José Manuel, Herrero-Bermello, A., Ortega-Moñux, Alejandro, Molina-Fernández, Iñigo, Wangüemert-Pérez, J. G., Velasco, Aitor V.   +6 more
openaire   +1 more source

Study of Free‐Space Optical Quantum Network: Review and Prospectives

Advanced Science, EarlyView.
Free from the constraints of fiber connections, free‐space quantum network enables longer and more flexible quantum network connections. This review summarizes and comparatively analyzes free‐space quantum network experiments based on ground stations, satellites, and mobile platforms.
Hua‐Ying Liu, Zhenda Xie, Shining Zhu
wiley   +1 more source

Dual‐Band Circularly Polarised Asymmetric Linear‐Tapered Horn Antenna for Feeder of Synthetic Aperture Radar Onboard Microsatellite

IET Microwaves, Antennas & Propagation
This paper presents a novel dual‐band waveguide‐fed circularly polarised (CP) horn antenna for the feeder of synthetic aperture radar (SAR) onboard microsatellite.
Derry Permana Yusuf, Josaphat Tetuko Sri Sumantyo, Yuki Yoshimoto, Steven Gao, Koichi Ito   +4 more
doaj   +1 more source

All-optical signal processing in novel highly nonlinear fibres and waveguides

, 2014
All-optical signal processing has recently become an attractive research field, a result of nonlinear optical systems making major advances in terms of cost, compactness, energy consumption, integrability and reliability.
Ettabib, Mohamed A.
core  

Mid-infrared photonics devices in SOI

In this paper we present silicon photonics devices designed for the 3-4µm wavelength region including waveguides, MMIs, ring resonators and Mach-Zehnder interferometers. The devices are based on silicon on insulator (SOI) platform. We show that 400-500nm
Reed, G.T., Nedeljković, M., Hu, Y., Peacock, A.C., Milošević, M.M., Ben Masaud, T.M., Jaberansary, E., Chen, Xia, Strain, M., Sorel, M., Mashanovich, G.Z., Chong, H.M.H.   +11 more
core   +1 more source

High‐Power Terahertz Emission from Picosecond Nano‐Plasma Switching Driven by Secondary Electron Emission Avalanche

Advanced Science, EarlyView.
A nano‐plasma device enables watt‐level on‐chip THz generation through picosecond switching triggered by secondary electron emission avalanche. An ultra‐dense electron sheet initiates nano‐plasma formation within a ∼100 nm gap, driving rapid energy release into an integrated resonator.
Guangyu Sun, Mohammad Rezaei, Yuheng Hu, Guan‐Jun Zhang, Elison Matioli   +4 more
wiley   +1 more source

Half‐Wavelength Uncertainty Compensated Accurate Estimation of Dielectric Constant of Low‐Loss Dielectrics at GHz Frequencies

IET Microwaves, Antennas & Propagation
The presented paper addresses the divergence issue of Nicholson–Ross–Weir (NRW) algorithm encountered during the electrical characterisation of half‐wavelength or thicker low‐loss dielectric materials.
Virendra S. Chauhan
doaj   +1 more source

Integrated optical and electronic interconnect printed circuit board manufacturing

, 2008
Introduction: At high bit rates copper tracks in printed circuit boards (PCBs) suffer severe loss and pulse distortion due to radiation of electromagnetic waves, dispersion and bandwidth limitations.
Selviah, D.R., Suyal, H., Milward, D., Bagshiahi, Hadi, Walker, A.C., Anibal Fernandez, F., Chappell, J., Hutt, David A., Hutt, D.A., Conway, P.P., McCarthy, A., Selviah, David R., Zakariyah, S.S., Fernández, Aníbal, Bagshiahi, H., Walker, Andy C., Papakonstantinou, I., Chappell, John, Suyal, Himanshu, McCarthy, Aongus, Conway, Paul P., Milward, Dave, Wang, K., Zakariyah, Shefiu S., Papakonstantinou, Ioannis, Fernández, F.A., Wang, Kai, Baghsiahi, H.   +27 more
core   +1 more source

Breaking the Bottleneck in Limit of Detection of Surface Refractive Index Sensing by Harnessing Meta‐Waveguide Microring Resonators

Advanced Science, EarlyView.
Mode splitting in meta‐waveguide microring resonators (MWMRs) effectively suppresses baseline drift and measurement noise while maintaining high refractive‐index sensitivity. This reflection‐induced mode splitting strategy enables quantitative detection of ultra‐weak surface perturbations and establishes MWMRs as a robust, drift‐immune platform for ...
Wanxin Li, Jiewen Li, Rui Li, Gina Jinna Chen, Perry Ping Shum, Yi Zou, Ray T. Chen, Yongkang Dong, Xiaochuan Xu   +8 more
wiley   +1 more source

Wilhelm Hofmeister revisited: Meristematic surfaces channel information flows in organogenesis

Quantitative Plant Biology
Plant development relies not only on intracellular biochemical signals but also on physical information that is transmitted across cells and tissues. In growing plant organs, surface geometry and mechanics can act together to channel stress and strain ...
Philip M. Lintilhac
doaj   +1 more source