Results 41 to 50 of about 19,023 (293)

Highly Efficient Polarization-Insensitive Grating Couplers on Thin-Film Lithium Niobate with an Integrated Gold Layer

Photonics
The thin-film lithium niobate platform, which is emerging as a promising photonic integration platform, currently lacks a polarization-insensitive grating coupler (GC), a crucial component for polarization-independent fiber interfaces.
Alaa Sultan, Mostafa Khalil, Leila Mehravar, Chang-qing Xu   +3 more
doaj   +1 more source

Polarization-insensitive electro-optic modulator based on thin-film lithium niobate multimode waveguide [PDF]

APL Photonics
We demonstrate a polarization-insensitive electro-optic (EO) modulator based on x-cut thin-film lithium niobate (TFLN), employing capacitively loaded traveling-wave (CLTW) electrodes on an undercut-etched silicon substrate.
Haohua Wang, Zong Wang, Lu Qi, Ao Cui, Ziliang Ruan, Changjian Guo, Kaixuan Chen, Liu Liu   +7 more
doaj   +1 more source

Polarization-Insensitive Phase Modulators Based on an Embedded Silicon-Graphene-Silicon Waveguide

Applied Sciences, 2019
A polarization-insensitive phase modulator concept is presented, based on an embedded silicon-graphene-silicon waveguide. Simulation results show that the effective mode index of both transverse electric (TE) and transverse magnetic (TM) modes in the ...
Xinhai Zou, Yujia Zhang, Zhihui Li, Yiwei Yang, Shangjian Zhang, Zhiyao Zhang, Yali Zhang, Yong Liu   +7 more
doaj   +1 more source

Polarization insensitive single mode Al [PDF]

, 2015
Both passive and active, single mode, wavelength and polarization insensitive design of Al2O3 rib waveguides on SiO2 substrate is reported. Influence of the waveguide height, etch depth, waveguide width and operation wavelength to the mode number, mode ...
A. Özden, M. Demirtaş, Demirtaş, M., Özden, Ayberk, Ay, Feridun, F. Ay   +5 more
core   +1 more source

Polarization-insensitive tunable multiple electromagnetically induced transparencies analogue in terahertz graphene metamaterial

, 2016
A graphene-based metamaterial structure composed of multilayer graphene/dielectric stacking configuration is proposed, which achieves multiple analogue of electromagnetically induced transparencies (EIT) effect at terahertz frequencies.
Fan, Wenhui (fanwh@opt.ac.cn), Fan, Wenhui, Chen, Xu   +2 more
core   +1 more source

Looped Polarization-Insensitive Fiber Optical Parametric Amplifiers for Broadband High Gain Applications [PDF]

, 2021
We investigate polarization insensitive fiber optical parametric amplifiers (FOPAs) employing a balanced polarization diversity loop with at least two unidirectional gain fibers.
Doran, N, Gordienko, Vladimir, Ferreira, Filipe, Doran, Nick, Ferreira, Filipe Marques, Ferreira, FM, Gaur, Chandra, Gordienko, V, Gaur, C   +8 more
core   +1 more source

Exploring Curvature Effects in Direct‐Written 3D Curved Hollow Magnetic Nanoshells

Advanced Functional Materials, EarlyView.
Fabricated by a hybrid FEBID/CVD method, 3D PtC/Co3Fe core–shell heterostructures with engineered curvature and shell thickness exhibit complex reversal modes with axially symmetric N'eel‐type domain walls. XMCD‐PEEM combined with full‐scale micromagnetic simulations reveal how curvature and thickness govern the domain wall energy landscape and shape ...
Oleksii M. Volkov, Fabrizio Porrati, Florian Kronast, Riccardo Hertel, Pavlo Makushko, Olha Bezsmertna, Alexander Kuprava, Mohamad‐Assaad Mawass, Sven Barth, Michael Huth, Denys Makarov   +10 more
wiley   +1 more source

Ultrabroadband Polarization-Insensitive Coupler Based on Dual-Core Photonic Crystal Fiber

IEEE Photonics Journal, 2017
We propose a dual-core photonic crystal fiber (PCF) for a broad bandwidth polarization-insensitive coupler. To achieve ultrabroadband and polarization-insensitive characteristics, two elliptical fluorine-doped cores are introduced.
Tongtong Zhao, Shuqin Lou, Xin Wang, Min Zhou, Zhenggang Lian   +4 more
doaj   +1 more source

Polarization-insensitive 3D conformal-skin metasurface cloak

Light: Science & Applications, 2021
Electromagnetic metasurface cloaks provide an alternative paradigm toward rendering arbitrarily shaped scatterers invisible. Most transformation-optics (TO) cloaks intrinsically need wavelength-scale volume/thickness, such that the incoming waves could ...
He-Xiu Xu, Guangwei Hu, Yanzhao Wang, Chaohui Wang, Mingzhao Wang, Shaojie Wang, Yongjun Huang, Patrice Genevet, Wei Huang, Cheng-Wei Qiu   +9 more
doaj   +1 more source

Polarizable Vanadium Dipoles Promote Water Dissociation on Vanadium‐Based Metal Organic Framework

Advanced Functional Materials, EarlyView.
The polarization of unpaired V 3d electrons weakens the H─O bond to improve water dissociation by the dual Vδ+:O─H and Pλ−:H─O coupling hydrogen bonds formation and relaxation. P@V‐MOF electrocatalyst shows low overpotentials (94 mV in acid, 178 mV in neutral, and 77 mV in alkaline solutions) with excellent stability for effective overall water ...
Xinjuan Liu, Jun Xu, Minmin Fan, Jingcheng Xu, Mengyuan Li, Yun Gong, Weiwei Yang, Lei Li, Yong Zhou, Deqiang Zhao, Yuhua Xue, Xingtao Xu, Chang Q. Sun, Liming Dai   +13 more
wiley   +1 more source