Results 111 to 120 of about 1,378,833 (339)

Design and Optimization of a Broadband Polarization-Insensitive 90° Optical Hybrid in Double-Strip Silicon Nitride Waveguides

Photonics
Coherent optical communication serves as the backbone of long-haul, high-capacity optical networks, where polarization-insensitive 90° optical hybrids (OHs) are crucial for system simplification and robustness.
Rui Meng, Yan Fan, Sitong Liu, Haoran Wang, Ziyang Xiong, Hao Deng, Liu Li, Junpeng Lu, Zhenhua Ni, Tong Lin   +9 more
doaj   +1 more source

Polarization insensitive phase modulator for quantum cryptosystems

Optics Express, 2006
In this paper, we propose a polarization-insensitive phase modulation scheme based on frequency modulation of light waves using either one or a pair of acousto-optic modulators. A stable Sagnac quantum key distribution (QKD) system employing this technique is also proposed.
Bing, Qi, Lei-Lei, Huang, Hoi-Kwong, Lo, Li, Qian   +3 more
openaire   +2 more sources

Demo 24-04 Microwave Polarization

, 2001
This demonstration illustrates one mechanism for the polarization of electromagnetic waves, using the apparatus as shown in Figure 1. The result is counterintuitive in that the waves that pass through the polarizer are polarized perpendicular to the ...

core  

Real‐Time Ferroelectric Domain Wall Dynamics During Electric Poling and Depoling

Advanced Science, EarlyView.
Real‐time visualization of domain wall dynamics during alternating‐current poling, direct‐current poling, and electrical depoling in relaxor‐PT ferroelectric single crystals reveals distinct field‐dependent pathways and strong path dependence. Instant polarized light microscopy uncovers reversible domain wall nucleation, motion, and reconfiguration ...
Ziqi Wang, Zhengze Xu, Anastasia Timofeeva, Hossam Elnaggar, Sipan Liu, Yusen Pei, Reece Henry, Brendan O'Connor, Eunkyoung Shim, Franky So, Kara Peters, Xiaoning Jiang, Jun Liu   +12 more
wiley   +1 more source

Pixelated Metasurface for Dual-Band and Multi-Polarization Electromagnetic Energy Harvesting

Scientific Reports, 2018
A dual-band and polarization-independent electromagnetic energy harvester composed of an array of pixelated unit cells is proposed. The pixelated unit cell is basically a dual-band resonator loaded with two resistors which model the input impedance of a ...
Bagher Ghaderi, V. Nayyeri, M. Soleimani, O. Ramahi   +3 more
semanticscholar   +1 more source

Gigahertz circular polarization oscillations in spin-polarized vertical-cavity surface-emitting lasers [PDF]

, 2010
We analyze ultrafast circular polarization oscillations in a commercial vertical-cavity surface-emitting laser after spin injection at room temperature. The circular polarization exhibits faster dynamics than the intensity and longer persistence than the
Hofmann, M. R., M. R. Hofmann, H. Jaehme, Soldat, H., Jaehme, H., Ackemann, T., N. C. Gerhardt, H. Soldat, Gerhardt, N. C., Li, M., M. Li, T. Ackemann   +11 more
core   +1 more source

Deciphering Anti‐Cancer Drug Efficacy Through Nanomechanical Vibrations in Living Gastric Cancer Organoids

Advanced Science, EarlyView.
This study developed an efficacy assessment platform that integrates patient‐derived gastric cancer organoids, atomic force microscopy (AFM)‐based nanomechanical vibration detection, deep learning analysis, and organoid mechanical modeling. It detects picomolar drug effects within 0.1 s signal, achieves 97% classification accuracy, and offers non ...
Ting Zhang, Qiubo Chen, Shihai Lan, Liang Zhu, Shuaiyu Liu, Yan Xia, Yalu Zhang, Hanhui Yao, Yongman Liu, Shangquan Wu, Qingchuan Zhang   +10 more
wiley   +1 more source

Multispectral UV Imaging on Capacitive CMOS Arrays Enabled by Solution‐Processed Metal‐Oxide Nanoparticles

Advanced Science, EarlyView.
Ultraviolet (UV) imagers are important for a variety of applications but often require dedicated semiconductor process flows. Here, a versatile capacitive CMOS platform is transformed into a visible‐blind, multispectral UV imager through post‐CMOS functionalization with solution‐processed metal‐oxide nanoparticles. The UV‐induced photodielectric effect
Suman Kundu, Tao Shen, Kai Betlem, Murali K. Ghatkesar, Peter G. Steeneken, Frans P. Widdershoven   +5 more
wiley   +1 more source

Design of a Polarization-Insensitive and Wide-Angle Triple-Band Metamaterial Absorber

Photonics
This paper proposes a tri-band wide-angle polarization-insensitive absorber operating in the C-band and Ku-band, based on the design concept of metal–dielectric–metal. The absorber achieves absorption efficiencies of 99.05%, 99.3%, and 97.9% at 4.23 GHz,
Shaoxin Zheng, Manna Gu, Guilan Feng, Mingfeng Zheng, Tianqi Zhao, Xufeng Jing   +5 more
doaj   +1 more source

Polarization-insentivity for polymer-silica based multimode interference (MMI) cross couple [PDF]

, 2008
A polarization-insensitive cross coupler, which consists of hybrid polymer-silica-based multimode waveguide on Si substrate, is presented. At operation wavelength of 1.55 µm, the simulation was done for both TE and TM modes and it was found that there is
Ibrahim, Mohd. Haniff, Mohd. Kassim, Norazan, Yaacob, Maslina, Mohammad, Abu Bakar   +3 more
core   +1 more source